From c7c2bc36c8630619998c46552d173053d6e3fd40 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andreas=20M=C3=B6ller?= <am@localheinz.com>
Date: Sun, 5 Jan 2025 23:12:38 +0100
Subject: [PATCH] Fix: Remove abstract test case

---
 .php-cs-fixer.fixture.php                     |  22 +-
 composer.json                                 |   1 +
 composer.lock                                 |   2 +-
 .../Classes/FinalRule/AbstractClass.php       |   9 +
 .../Classes/FinalRule/ExampleInterface.php    |   9 +
 .../Classes/FinalRule/ExampleTrait.php        |   9 +
 .../FinalRule/Failure/AbstractClass.php       |   9 -
 test/Fixture/Classes/FinalRule/FinalClass.php |   9 +
 .../FinalClassWithAnonymousClass.php          |   2 +-
 .../NeitherAbstractNorFinalClass.php          |   2 +-
 ...inalClassWithAliasedOrmEntityAttribute.php |   2 +-
 ...ssWithEntityAnnotationInInlineDocBlock.php |   2 +-
 ...ithEntityAnnotationInMultilineDocBlock.php |   2 +-
 ...ithOrmEntityAnnotationInInlineDocBlock.php |   2 +-
 ...OrmEntityAnnotationInMultilineDocBlock.php |   2 +-
 ...appingEntityAnnotationInInlineDocBlock.php |   2 +-
 ...ingEntityAnnotationInMultilineDocBlock.php |   2 +-
 ...ifiedDoctrineOrmMappingEntityAttribute.php |   2 +-
 ...FinalClassWithQualifiedEntityAttribute.php |   2 +-
 ...assWithQualifiedMappingEntityAttribute.php |   2 +-
 ...WithQualifiedOrmMappingEntityAttribute.php |   2 +-
 ...ifiedDoctrineOrmMappingEntityAttribute.php |   2 +-
 ...nalClassWithUnqualifiedEntityAttribute.php |   2 +-
 ...ClassWithUnqualifiedOrmEntityAttribute.php |   2 +-
 ...thUnqualifiedOrmMappingEntityAttribute.php |   2 +-
 ...ithoutEntityAnnotationInInlineDocBlock.php |   2 +-
 ...outEntityAnnotationInMultilineDocBlock.php |   2 +-
 ...outOrmEntityAnnotationInInlineDocBlock.php |   2 +-
 ...OrmEntityAnnotationInMultilineDocBlock.php |   2 +-
 .../FinalRule/Success/ExampleInterface.php    |   9 -
 .../FinalRule/Success/ExampleTrait.php        |   9 -
 .../Classes/FinalRule/Success/FinalClass.php  |   9 -
 .../{Success => }/TraitWithAnonymousClass.php |   2 +-
 .../anonymous-class.php => script.php}        |   2 +-
 .../Failure/AbstractClass.php                 |   9 -
 .../Failure/NeitherAbstractNorFinalClass.php  |   9 -
 .../Success/ExampleInterface.php              |   9 -
 .../Success/ExampleTrait.php                  |   9 -
 .../Success/FinalClass.php                    |   9 -
 .../Success/FinalClassWithAnonymousClass.php  |  18 --
 .../Success/TraitWithAnonymousClass.php       |  18 --
 .../Success/anonymous-class.php               |  12 -
 .../Failure/AbstractClass.php                 |   9 -
 .../Failure/NeitherAbstractNorFinalClass.php  |   9 -
 .../Success/ExampleInterface.php              |   9 -
 .../Success/ExampleTrait.php                  |   9 -
 .../Success/FinalClass.php                    |   9 -
 .../Success/FinalClassWithAnonymousClass.php  |  18 --
 ...herAbstractNorFinalClassButWhitelisted.php |   9 -
 .../Success/TraitWithAnonymousClass.php       |  18 --
 .../Success/anonymous-class.php               |  12 -
 .../ClassExtendingOtherClass.php              |   2 +-
 ...ClassExtendingPhpUnitFrameworkTestCase.php |   2 +-
 .../{Success => }/ExampleClass.php            |   2 +-
 .../{Success => }/ExampleInterface.php        |   2 +-
 .../anonymous-class-extending-other-class.php |  12 -
 .../InterfaceExtendingOtherInterface.php      |   4 +-
 .../{Failure => }/OtherClass.php              |   2 +-
 .../{Success => }/OtherInterface.php          |   2 +-
 .../anonymous-class.php => script.php}        |   9 +-
 .../Failure/ClassExtendingOtherClass.php      |   9 -
 .../Failure/OtherClass.php                    |   9 -
 .../anonymous-class-extending-other-class.php |  12 -
 .../Success/ClassAllowedToBeExtended.php      |   9 -
 ...ClassExtendingClassAllowedToBeExtended.php |   9 -
 ...ClassExtendingPhpUnitFrameworkTestCase.php |  11 -
 .../Success/ExampleClass.php                  |   9 -
 .../Success/ExampleInterface.php              |   9 -
 .../InterfaceExtendingOtherInterface.php      |   9 -
 .../Success/OtherInterface.php                |   9 -
 ...extending-class-allowed-to-be-extended.php |  12 -
 .../Success/anonymous-class.php               |  12 -
 .../{Failure => }/AbstractTestCase.php        |   2 +-
 ...ExtendingAbstractTestCaseWithoutSuffix.php |   9 +
 .../ConcreteTestCaseWithSuffixTest.php        |   2 +-
 ....php => ConcreteTestCaseWithoutSuffix.php} |   4 +-
 ...ndingAbstractTestCaseWithoutTestSuffix.php |   9 -
 .../ConcreteTestCaseWithoutTestSuffix.php     |  15 -
 .../Success/ImplicitlyAbstractTestCase.php    |  12 -
 ...-with-nullable-return-type-declaration.php |   9 -
 ...ble-union-type-return-type-declaration.php |   9 -
 .../closure-with-return-type-declaration.php  |   9 -
 ...losure-without-return-type-declaration.php |   9 -
 .../script.php                                |  21 ++
 ...with-parameter-with-null-default-value.php |   9 -
 ...amespace-referenced-null-default-value.php |   9 -
 ...wrongly-capitalized-null-default-value.php |   9 -
 ...-parameter-with-non-null-default-value.php |   9 -
 ...e-with-parameter-without-default-value.php |   9 -
 .../Success/closure-without-parameters.php    |   8 -
 .../script.php                                |  28 ++
 ...rameter-with-nullable-type-declaration.php |   9 -
 ...r-with-nullable-union-type-declaration.php |   9 -
 ...e-with-parameter-with-type-declaration.php |   9 -
 ...ith-parameter-without-type-declaration.php |   9 -
 .../Success/closure-without-parameters.php    |   8 -
 .../script.php                                |  24 ++
 .../Failure/compact-used-with-alias.php       |  15 -
 .../compact-used-with-correct-case.php        |  13 -
 .../compact-used-with-incorrect-case.php      |  13 -
 .../compact-not-used.php => script.php}       |  21 +-
 .../Success/error-suppression-not-used.php    |   7 -
 .../error-suppression-used.php => script.php} |   4 +-
 .../Failure/eval-used-with-correct-case.php   |   7 -
 .../Failure/eval-used-with-incorrect-case.php |   7 -
 .../{Success/eval-not-used.php => script.php} |   6 +-
 .../Failure/isset-used-with-correct-case.php  |   9 -
 .../isset-used-with-incorrect-case.php        |   9 -
 .../isset-not-used.php => script.php}         |  10 +-
 .../{Success => }/file-empty.php              |   0
 ...re-strict-types-off-and-invalid-casing.php |   0
 ...strict-types-off-and-multiple-declares.php |   0
 ...h-comment-and-declare-strict-types-off.php |   0
 ...are-strict-types-on-and-invalid-casing.php |   0
 ...-strict-types-on-and-multiple-declares.php |   0
 ...ict-types-on-and-namespace-declaration.php |   2 +-
 ...th-comment-and-declare-strict-types-on.php |   0
 ...re-strict-types-off-and-invalid-casing.php |   0
 ...strict-types-off-and-multiple-declares.php |   0
 .../file-with-declare-strict-types-off.php    |   0
 ...are-strict-types-on-and-invalid-casing.php |   0
 ...-strict-types-on-and-multiple-declares.php |   0
 ...ict-types-on-and-namespace-declaration.php |   2 +-
 .../file-with-declare-strict-types-on.php     |   0
 .../{Failure => }/file-with-declare-ticks.php |   0
 ...re-strict-types-off-and-invalid-casing.php |   0
 ...strict-types-off-and-multiple-declares.php |   0
 ...doc-block-and-declare-strict-types-off.php |   0
 ...are-strict-types-on-and-invalid-casing.php |   0
 ...-strict-types-on-and-multiple-declares.php |   0
 ...ict-types-on-and-namespace-declaration.php |   2 +-
 ...-doc-block-and-declare-strict-types-on.php |   0
 ...other-one-text-line-before-opening-tag.php |   0
 ...h-shebang-and-declare-strict-types-off.php |   0
 ...th-shebang-and-declare-strict-types-on.php |   0
 .../file-with-text-before-opening-tag.php     |   0
 ...strict-types-and-namespace-declaration.php |   2 +-
 .../file-without-declare-strict-types.php     |   0
 ...-with-nullable-return-type-declaration.php |  10 -
 ...nullable-union-return-type-declaration.php |  10 -
 .../function-with-return-type-declaration.php |  10 -
 ...nction-without-return-type-declaration.php |  10 -
 .../script.php                                |  25 ++
 ...with-parameter-with-null-default-value.php |  10 -
 ...amespace-referenced-null-default-value.php |  10 -
 ...wrongly-capitalized-null-default-value.php |  10 -
 ...-parameter-with-non-null-default-value.php |  10 -
 ...n-with-parameter-without-default-value.php |  10 -
 .../Success/function-without-parameters.php   |   9 -
 .../script.php                                |  34 +++
 ...rameter-with-nullable-type-declaration.php |  10 -
 ...r-with-nullable-union-type-declaration.php |  10 -
 ...n-with-parameter-with-type-declaration.php |  10 -
 ...ith-parameter-without-type-declaration.php |  10 -
 .../Success/function-without-parameters.php   |   9 -
 .../script.php                                |  29 ++
 .../AbstractClassWithAbstractMethod.php       |   2 +-
 .../AbstractClassWithFinalProtectedMethod.php |   2 +-
 .../AbstractClassWithFinalPublicMethod.php    |   2 +-
 .../AbstractClassWithNonFinalConstructor.php  |   2 +-
 .../AbstractClassWithPrivateMethod.php        |   2 +-
 .../AbstractClassWithProtectedMethod.php      |   2 +-
 ...ndEmbeddableAnnotationInInlineDocBlock.php |   2 +-
 ...mbeddableAnnotationInMultilineDocBlock.php |   2 +-
 ...hProtectedMethodAndEmbeddableAttribute.php |   2 +-
 ...hodAndEntityAnnotationInInlineDocBlock.php |   2 +-
 ...AndEntityAnnotationInMultilineDocBlock.php |   2 +-
 ...sWithProtectedMethodAndEntityAttribute.php |   2 +-
 ...rmEmbeddableAnnotationInInlineDocBlock.php |   2 +-
 ...mbeddableAnnotationInMultilineDocBlock.php |   2 +-
 ...AndOrmEntityAnnotationInInlineDocBlock.php |   2 +-
 ...OrmEntityAnnotationInMultilineDocBlock.php |   2 +-
 ...ngEmbeddableAnnotationInInlineDocBlock.php |   2 +-
 ...mbeddableAnnotationInMultilineDocBlock.php |   2 +-
 ...appingEntityAnnotationInInlineDocBlock.php |   2 +-
 ...ingEntityAnnotationInMultilineDocBlock.php |   2 +-
 .../AbstractClassWithPublicMethod.php         |   2 +-
 ...ndEmbeddableAnnotationInInlineDocBlock.php |   2 +-
 ...mbeddableAnnotationInMultilineDocBlock.php |   2 +-
 ...WithPublicMethodAndEmbeddableAttribute.php |   2 +-
 ...hodAndEntityAnnotationInInlineDocBlock.php |   2 +-
 ...AndEntityAnnotationInMultilineDocBlock.php |   2 +-
 ...lassWithPublicMethodAndEntityAttribute.php |   2 +-
 ...rmEmbeddableAnnotationInInlineDocBlock.php |   2 +-
 ...mbeddableAnnotationInMultilineDocBlock.php |   2 +-
 ...AndOrmEntityAnnotationInInlineDocBlock.php |   2 +-
 ...OrmEntityAnnotationInMultilineDocBlock.php |   2 +-
 ...ngEmbeddableAnnotationInInlineDocBlock.php |   2 +-
 ...mbeddableAnnotationInMultilineDocBlock.php |   2 +-
 ...appingEntityAnnotationInInlineDocBlock.php |   2 +-
 ...ingEntityAnnotationInMultilineDocBlock.php |   2 +-
 .../InterfaceWithPublicMethod.php             |   2 +-
 ...orInClassWithParameterWithDefaultValue.php |   2 +-
 ...nClassWithParameterWithoutDefaultValue.php |   2 +-
 .../ConstructorInClassWithoutParameters.php   |   2 +-
 ...orInTraitWithParameterWithDefaultValue.php |   2 +-
 ...nTraitWithParameterWithoutDefaultValue.php |   2 +-
 .../ConstructorInTraitWithoutParameters.php   |   2 +-
 ...onInClassWithParameterWithDefaultValue.php |   2 +-
 ...lass-with-parameter-with-default-value.php |  11 -
 ...lass-with-parameter-with-default-value.php |  11 -
 ...odInClassWithParameterWithDefaultValue.php |   2 +-
 ...odInTraitWithParameterWithDefaultValue.php |   2 +-
 ...s-with-parameter-without-default-value.php |  11 -
 ...-in-anonymous-class-without-parameters.php |  11 -
 ...lass-with-parameter-with-default-value.php |  11 -
 .../script.php                                |  35 +++
 ...ClassWithNullableReturnTypeDeclaration.php |  18 --
 ...WithNullableUnionReturnTypeDeclaration.php |  18 --
 ...ClassWithNullableReturnTypeDeclaration.php |   2 +-
 ...WithNullableUnionReturnTypeDeclaration.php |   2 +-
 ...MethodInClassWithReturnTypeDeclaration.php |   2 +-
 ...hodInClassWithoutReturnTypeDeclaration.php |   2 +-
 ...rfaceWithNullableReturnTypeDeclaration.php |   2 +-
 ...WithNullableUnionReturnTypeDeclaration.php |   2 +-
 ...odInInterfaceWithReturnTypeDeclaration.php |   2 +-
 ...nInterfaceWithoutReturnTypeDeclaration.php |   2 +-
 ...TraitWithNullableReturnTypeDeclaration.php |   2 +-
 ...MethodInTraitWithReturnTypeDeclaration.php |   2 +-
 ...hodInTraitWithoutReturnTypeDeclaration.php |   2 +-
 ...nonymousClassWithReturnTypeDeclaration.php |  18 --
 ...ymousClassWithoutReturnTypeDeclaration.php |  18 --
 .../script.php                                |  33 +++
 .../ClassImplementingContainerInterface.php   |   4 +-
 ...WithParameterWithSelfAsTypeDeclaration.php |   2 +-
 ...ingContainerInterfaceAsTypeDeclaration.php |   2 +-
 ...ceAsTypeDeclarationWhereNameIsExcluded.php |   4 +-
 ...ithContainerInterfaceAsTypeDeclaration.php |   2 +-
 ...ingContainerInterfaceAsTypeDeclaration.php |   2 +-
 ...dWithParameterWithOtherTypeDeclaration.php |   2 +-
 .../ClassWithMethodWithoutParameter.php       |   2 +-
 .../{Success => }/ContainerInterface.php      |   2 +-
 ...ontainer-interface-as-type-declaration.php |  12 -
 ...ontainer-interface-as-type-declaration.php |  14 -
 ...ontainer-interface-as-type-declaration.php |  12 -
 .../InterfaceExtendingContainerInterface.php  |   2 +-
 ...ithContainerInterfaceAsTypeDeclaration.php |   2 +-
 ...ceAsTypeDeclarationWhereNameIsExcluded.php |   2 +-
 ...dWithParameterWithOtherTypeDeclaration.php |   2 +-
 .../InterfaceWithMethodWithoutParameter.php   |   2 +-
 ...ype-declaration-where-name-is-excluded.php |  12 -
 ...-parameter-with-other-type-declaration.php |  11 -
 ...us-class-with-method-without-parameter.php |  11 -
 .../script.php                                |  46 +++
 ...with-parameter-with-null-default-value.php |  12 -
 ...amespace-referenced-null-default-value.php |  12 -
 ...wrongly-capitalized-null-default-value.php |  12 -
 ...ssWithParameterWithNonNullDefaultValue.php |   2 +-
 ...ClassWithParameterWithNullDefaultValue.php |   2 +-
 ...ootNamespaceReferencedNullDefaultValue.php |   2 +-
 ...WithWronglyCapitalizedNullDefaultValue.php |   2 +-
 ...nClassWithParameterWithoutDefaultValue.php |   2 +-
 .../MethodInClassWithoutParameters.php        |   2 +-
 ...ceWithParameterWithNonNullDefaultValue.php |   2 +-
 ...rfaceWithParameterWithNullDefaultValue.php |   2 +-
 ...ootNamespaceReferencedNullDefaultValue.php |   2 +-
 ...WithWronlgyCapitalizedNullDefaultValue.php |   2 +-
 ...erfaceWithParameterWithoutDefaultValue.php |   2 +-
 .../MethodInInterfaceWithoutParameters.php    |   2 +-
 ...odInTraitWithParameterWithDefaultValue.php |   2 +-
 ...itWithParameterWithNonNullDefaultValue.php |   2 +-
 ...ootNamespaceReferencedNullDefaultValue.php |   2 +-
 ...WithWronlgyCapitalizedNullDefaultValue.php |   2 +-
 ...nTraitWithParameterWithoutDefaultValue.php |   2 +-
 .../MethodInTraitWithoutParameters.php        |   2 +-
 ...-parameter-with-non-null-default-value.php |  12 -
 ...s-with-parameter-without-default-value.php |  12 -
 ...-in-anonymous-class-without-parameters.php |  11 -
 .../script.php                                |  46 +++
 ...rameter-with-nullable-type-declaration.php |  12 -
 ...r-with-nullable-union-type-declaration.php |  12 -
 ...thParameterWithNullableTypeDeclaration.php |   2 +-
 ...ameterWithNullableUnionTypeDeclaration.php |   2 +-
 ...nClassWithParameterWithTypeDeclaration.php |   2 +-
 ...assWithParameterWithoutTypeDeclaration.php |   2 +-
 .../MethodInClassWithoutParameters.php        |   2 +-
 ...thParameterWithNullableTypeDeclaration.php |   2 +-
 ...ameterWithNullableUnionTypeDeclaration.php |   2 +-
 ...erfaceWithParameterWithTypeDeclaration.php |   2 +-
 ...aceWithParameterWithoutTypeDeclaration.php |   2 +-
 .../MethodInInterfaceWithoutParameters.php    |   2 +-
 ...thParameterWithNullableTypeDeclaration.php |   2 +-
 ...nTraitWithParameterWithTypeDeclaration.php |   2 +-
 ...aitWithParameterWithoutTypeDeclaration.php |   2 +-
 .../MethodInTraitWithoutParameters.php        |   2 +-
 ...s-with-parameter-with-type-declaration.php |  12 -
 ...ith-parameter-without-type-declaration.php |  12 -
 ...-in-anonymous-class-without-parameters.php |  11 -
 .../script.php                                |  40 +++
 ...endingAbstractClassWithProtectedMethod.php |   2 +-
 .../AbstractClassWithProtectedMethod.php      |   2 +-
 .../ClassWithProtectedMethod.php              |   2 +-
 .../FinalClassWithPrivateMethod.php           |   2 +-
 .../FinalClassWithProtectedMethod.php         |   2 +-
 ...sExtendingClassWithSameProtectedMethod.php |   2 +-
 ...dExtendingClassWithSameProtectedMethod.php |   2 +-
 ...FinalClassWithProtectedMethodFromTrait.php |   2 +-
 .../FinalClassWithPublicMethod.php            |   2 +-
 .../TraitWithProtectedMethod.php              |   2 +-
 ...lassWithProtectedMethod.php => script.php} |   4 +-
 .../Failure/switch-used-with-correct-case.php |   2 +-
 .../switch-used-with-incorrect-case.php       |   2 +-
 .../NoSwitchRule/Success/switch-not-used.php  |   2 +-
 test/Integration/AbstractTestCase.php         |   2 +
 test/Integration/Classes/FinalRuleTest.php    | 264 ++++++++++++++----
 ...inalRuleWithAbstractClassesAllowedTest.php |  80 ------
 .../Classes/FinalRuleWithAttributesTest.php   | 108 -------
 .../FinalRuleWithExcludedClassNamesTest.php   |  92 ------
 .../Integration/Classes/NoExtendsRuleTest.php |  70 +++--
 ...RuleWithClassesAllowedToBeExtendedTest.php |  90 ------
 .../Framework/TestCaseWithSuffixRuleTest.php  |  48 +---
 ...oNullableReturnTypeDeclarationRuleTest.php |  47 +---
 ...oParameterWithNullDefaultValueRuleTest.php |  53 +---
 ...terWithNullableTypeDeclarationRuleTest.php |  48 +---
 .../Expressions/NoCompactRuleTest.php         |  51 +---
 .../NoErrorSuppressionRuleTest.php            |  41 +--
 .../Expressions/NoEvalRuleTest.php            |  46 +--
 .../Expressions/NoIssetRuleTest.php           |  46 +--
 .../Files/DeclareStrictTypesRuleTest.php      |  94 +------
 ...oNullableReturnTypeDeclarationRuleTest.php |  51 +---
 ...oParameterWithNullDefaultValueRuleTest.php |  59 ++--
 ...terWithNullableTypeDeclarationRuleTest.php |  52 +---
 .../Methods/FinalInAbstractClassRuleTest.php  |  79 +-----
 ...uctorParameterWithDefaultValueRuleTest.php |  79 ++----
 ...oNullableReturnTypeDeclarationRuleTest.php |  87 ++----
 ...erWithContainerTypeDeclarationRuleTest.php | 114 +++-----
 ...oParameterWithNullDefaultValueRuleTest.php | 114 ++------
 ...terWithNullableTypeDeclarationRuleTest.php |  90 ++----
 .../Methods/PrivateInFinalClassRuleTest.php   |  61 ++--
 .../Statements/NoSwitchRuleTest.php           |  42 +--
 test/Util/Helper.php                          |  35 +++
 331 files changed, 1208 insertions(+), 2720 deletions(-)
 create mode 100644 test/Fixture/Classes/FinalRule/AbstractClass.php
 create mode 100644 test/Fixture/Classes/FinalRule/ExampleInterface.php
 create mode 100644 test/Fixture/Classes/FinalRule/ExampleTrait.php
 delete mode 100644 test/Fixture/Classes/FinalRule/Failure/AbstractClass.php
 create mode 100644 test/Fixture/Classes/FinalRule/FinalClass.php
 rename test/Fixture/Classes/FinalRule/{Success => }/FinalClassWithAnonymousClass.php (78%)
 rename test/Fixture/Classes/FinalRule/{Failure => }/NeitherAbstractNorFinalClass.php (50%)
 rename test/Fixture/Classes/{FinalRuleWithAttributes/Success => FinalRule}/NonFinalClassWithAliasedOrmEntityAttribute.php (61%)
 rename test/Fixture/Classes/FinalRule/{Success => }/NonFinalClassWithEntityAnnotationInInlineDocBlock.php (59%)
 rename test/Fixture/Classes/FinalRule/{Success => }/NonFinalClassWithEntityAnnotationInMultilineDocBlock.php (65%)
 rename test/Fixture/Classes/FinalRule/{Success => }/NonFinalClassWithOrmEntityAnnotationInInlineDocBlock.php (61%)
 rename test/Fixture/Classes/FinalRule/{Success => }/NonFinalClassWithOrmEntityAnnotationInMultilineDocBlock.php (67%)
 rename test/Fixture/Classes/FinalRule/{Success => }/NonFinalClassWithOrmMappingEntityAnnotationInInlineDocBlock.php (64%)
 rename test/Fixture/Classes/FinalRule/{Success => }/NonFinalClassWithOrmMappingEntityAnnotationInMultilineDocBlock.php (70%)
 rename test/Fixture/Classes/{FinalRuleWithAttributes/Success => FinalRule}/NonFinalClassWithQualifiedDoctrineOrmMappingEntityAttribute.php (61%)
 rename test/Fixture/Classes/{FinalRuleWithAttributes/Success => FinalRule}/NonFinalClassWithQualifiedEntityAttribute.php (60%)
 rename test/Fixture/Classes/{FinalRuleWithAttributes/Success => FinalRule}/NonFinalClassWithQualifiedMappingEntityAttribute.php (61%)
 rename test/Fixture/Classes/{FinalRuleWithAttributes/Success => FinalRule}/NonFinalClassWithQualifiedOrmMappingEntityAttribute.php (61%)
 rename test/Fixture/Classes/{FinalRuleWithAttributes/Failure => FinalRule}/NonFinalClassWithUnqualifiedDoctrineOrmMappingEntityAttribute.php (61%)
 rename test/Fixture/Classes/{FinalRuleWithAttributes/Failure => FinalRule}/NonFinalClassWithUnqualifiedEntityAttribute.php (53%)
 rename test/Fixture/Classes/{FinalRuleWithAttributes/Failure => FinalRule}/NonFinalClassWithUnqualifiedOrmEntityAttribute.php (55%)
 rename test/Fixture/Classes/{FinalRuleWithAttributes/Failure => FinalRule}/NonFinalClassWithUnqualifiedOrmMappingEntityAttribute.php (58%)
 rename test/Fixture/Classes/FinalRule/{Failure => }/NonFinalClassWithoutEntityAnnotationInInlineDocBlock.php (60%)
 rename test/Fixture/Classes/FinalRule/{Failure => }/NonFinalClassWithoutEntityAnnotationInMultilineDocBlock.php (66%)
 rename test/Fixture/Classes/FinalRule/{Failure => }/NonFinalClassWithoutOrmEntityAnnotationInInlineDocBlock.php (61%)
 rename test/Fixture/Classes/FinalRule/{Failure => }/NonFinalClassWithoutOrmEntityAnnotationInMultilineDocBlock.php (67%)
 delete mode 100644 test/Fixture/Classes/FinalRule/Success/ExampleInterface.php
 delete mode 100644 test/Fixture/Classes/FinalRule/Success/ExampleTrait.php
 delete mode 100644 test/Fixture/Classes/FinalRule/Success/FinalClass.php
 rename test/Fixture/Classes/FinalRule/{Success => }/TraitWithAnonymousClass.php (77%)
 rename test/Fixture/Classes/FinalRule/{Success/anonymous-class.php => script.php} (64%)
 delete mode 100644 test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Failure/AbstractClass.php
 delete mode 100644 test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Failure/NeitherAbstractNorFinalClass.php
 delete mode 100644 test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/ExampleInterface.php
 delete mode 100644 test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/ExampleTrait.php
 delete mode 100644 test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/FinalClass.php
 delete mode 100644 test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/FinalClassWithAnonymousClass.php
 delete mode 100644 test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/TraitWithAnonymousClass.php
 delete mode 100644 test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/anonymous-class.php
 delete mode 100644 test/Fixture/Classes/FinalRuleWithExcludedClassNames/Failure/AbstractClass.php
 delete mode 100644 test/Fixture/Classes/FinalRuleWithExcludedClassNames/Failure/NeitherAbstractNorFinalClass.php
 delete mode 100644 test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/ExampleInterface.php
 delete mode 100644 test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/ExampleTrait.php
 delete mode 100644 test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/FinalClass.php
 delete mode 100644 test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/FinalClassWithAnonymousClass.php
 delete mode 100644 test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/NeitherAbstractNorFinalClassButWhitelisted.php
 delete mode 100644 test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/TraitWithAnonymousClass.php
 delete mode 100644 test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/anonymous-class.php
 rename test/Fixture/Classes/NoExtendsRule/{Failure => }/ClassExtendingOtherClass.php (92%)
 rename test/Fixture/Classes/NoExtendsRule/{Success => }/ClassExtendingPhpUnitFrameworkTestCase.php (94%)
 rename test/Fixture/Classes/NoExtendsRule/{Success => }/ExampleClass.php (90%)
 rename test/Fixture/Classes/NoExtendsRule/{Success => }/ExampleInterface.php (90%)
 delete mode 100644 test/Fixture/Classes/NoExtendsRule/Failure/anonymous-class-extending-other-class.php
 rename test/Fixture/Classes/NoExtendsRule/{Success => }/InterfaceExtendingOtherInterface.php (64%)
 rename test/Fixture/Classes/NoExtendsRule/{Failure => }/OtherClass.php (90%)
 rename test/Fixture/Classes/NoExtendsRule/{Success => }/OtherInterface.php (90%)
 rename test/Fixture/Classes/NoExtendsRule/{Success/anonymous-class.php => script.php} (58%)
 delete mode 100644 test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Failure/ClassExtendingOtherClass.php
 delete mode 100644 test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Failure/OtherClass.php
 delete mode 100644 test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Failure/anonymous-class-extending-other-class.php
 delete mode 100644 test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/ClassAllowedToBeExtended.php
 delete mode 100644 test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/ClassExtendingClassAllowedToBeExtended.php
 delete mode 100644 test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/ClassExtendingPhpUnitFrameworkTestCase.php
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 rename test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/{Success => }/MethodInInterfaceWithParameterWithTypeDeclaration.php (82%)
 rename test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/{Success => }/MethodInInterfaceWithParameterWithoutTypeDeclaration.php (82%)
 rename test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/{Success => }/MethodInInterfaceWithoutParameters.php (80%)
 rename test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/{Success => }/MethodInTraitWithParameterWithNullableTypeDeclaration.php (84%)
 rename test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/{Success => }/MethodInTraitWithParameterWithTypeDeclaration.php (84%)
 rename test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/{Success => }/MethodInTraitWithParameterWithoutTypeDeclaration.php (83%)
 rename test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/{Success => }/MethodInTraitWithoutParameters.php (81%)
 delete mode 100644 test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/method-in-anonymous-class-with-parameter-with-type-declaration.php
 delete mode 100644 test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/method-in-anonymous-class-with-parameter-without-type-declaration.php
 delete mode 100644 test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/method-in-anonymous-class-without-parameters.php
 create mode 100644 test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/script.php
 rename test/Fixture/Methods/PrivateInFinalClassRule/{Success => }/AbstractClassExtendingAbstractClassWithProtectedMethod.php (90%)
 rename test/Fixture/Methods/PrivateInFinalClassRule/{Success => }/AbstractClassWithProtectedMethod.php (89%)
 rename test/Fixture/Methods/PrivateInFinalClassRule/{Success => }/ClassWithProtectedMethod.php (88%)
 rename test/Fixture/Methods/PrivateInFinalClassRule/{Success => }/FinalClassWithPrivateMethod.php (89%)
 rename test/Fixture/Methods/PrivateInFinalClassRule/{Failure => }/FinalClassWithProtectedMethod.php (89%)
 rename test/Fixture/Methods/PrivateInFinalClassRule/{Success => }/FinalClassWithProtectedMethodExtendingClassExtendingClassWithSameProtectedMethod.php (93%)
 rename test/Fixture/Methods/PrivateInFinalClassRule/{Success => }/FinalClassWithProtectedMethodExtendingClassWithSameProtectedMethod.php (92%)
 rename test/Fixture/Methods/PrivateInFinalClassRule/{Success => }/FinalClassWithProtectedMethodFromTrait.php (89%)
 rename test/Fixture/Methods/PrivateInFinalClassRule/{Success => }/FinalClassWithPublicMethod.php (89%)
 rename test/Fixture/Methods/PrivateInFinalClassRule/{Success => }/TraitWithProtectedMethod.php (88%)
 rename test/Fixture/Methods/PrivateInFinalClassRule/{Failure/AnonymousClassWithProtectedMethod.php => script.php} (80%)
 delete mode 100644 test/Integration/Classes/FinalRuleWithAbstractClassesAllowedTest.php
 delete mode 100644 test/Integration/Classes/FinalRuleWithAttributesTest.php
 delete mode 100644 test/Integration/Classes/FinalRuleWithExcludedClassNamesTest.php
 delete mode 100644 test/Integration/Classes/NoExtendsRuleWithClassesAllowedToBeExtendedTest.php
 create mode 100644 test/Util/Helper.php

diff --git a/.php-cs-fixer.fixture.php b/.php-cs-fixer.fixture.php
index fbc479d8..debeb30e 100644
--- a/.php-cs-fixer.fixture.php
+++ b/.php-cs-fixer.fixture.php
@@ -26,6 +26,7 @@
         'lowercase_keywords' => false,
         'magic_method_casing' => false,
         'native_function_casing' => false,
+        'native_function_invocation' => false,
         'nullable_type_declaration' => false,
         'protected_to_private' => false,
         'static_lambda' => false,
@@ -36,17 +37,16 @@
 $config->getFinder()
     ->in(__DIR__ . '/test/Fixture/')
     ->notPath([
-        'Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Success/ImplicitlyAbstractTestCase.php',
-        'Closures/NoNullableReturnTypeDeclarationRule/Failure/closure-with-nullable-union-type-return-type-declaration.php',
-        'Closures/NoParameterWithNullableTypeDeclarationRule/Failure/closure-with-parameter-with-nullable-union-type-declaration.php',
-        'Functions/NoNullableReturnTypeDeclarationRule/Failure/function-with-nullable-union-return-type-declaration.php',
-        'Functions/NoParameterWithNullableTypeDeclarationRule/Failure/function-with-parameter-with-nullable-union-type-declaration.php',
-        'Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInAnonymousClassWithNullableUnionReturnTypeDeclaration.php',
-        'Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInClassWithNullableUnionReturnTypeDeclaration.php',
-        'Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInInterfaceWithNullableUnionReturnTypeDeclaration.php',
-        'Methods/NoParameterWithNullableTypeDeclarationRule/Failure/method-in-anonymous-class-with-parameter-with-nullable-union-type-declaration.php',
-        'Methods/NoParameterWithNullableTypeDeclarationRule/Failure/MethodInClassWithParameterWithNullableUnionTypeDeclaration.php',
-        'Methods/NoParameterWithNullableTypeDeclarationRule/Failure/MethodInInterfaceWithParameterWithNullableUnionTypeDeclaration.php',
+        'Closures/NoNullableReturnTypeDeclarationRule/script.php',
+        'Closures/NoParameterWithNullableTypeDeclarationRule/script.php',
+        'Functions/NoNullableReturnTypeDeclarationRule/script.php',
+        'Functions/NoParameterWithNullableTypeDeclarationRule/script.php',
+        'Methods/NoNullableReturnTypeDeclarationRule/MethodInClassWithNullableUnionReturnTypeDeclaration.php',
+        'Methods/NoNullableReturnTypeDeclarationRule/MethodInInterfaceWithNullableUnionReturnTypeDeclaration.php',
+        'Methods/NoNullableReturnTypeDeclarationRule/script.php',
+        'Methods/NoParameterWithNullableTypeDeclarationRule/MethodInClassWithParameterWithNullableUnionTypeDeclaration.php',
+        'Methods/NoParameterWithNullableTypeDeclarationRule/MethodInInterfaceWithParameterWithNullableUnionTypeDeclaration.php',
+        'Methods/NoParameterWithNullableTypeDeclarationRule/script.php',
     ]);
 
 $config->setCacheFile(__DIR__ . '/.build/php-cs-fixer/.php_cs.fixture.cache');
diff --git a/composer.json b/composer.json
index e9e6e714..40192616 100644
--- a/composer.json
+++ b/composer.json
@@ -38,6 +38,7 @@
     "phpstan/phpstan-strict-rules": "^1.6.1",
     "phpunit/phpunit": "^9.6.21",
     "psr/container": "^2.0.2",
+    "symfony/finder": "^5.4.45",
     "symfony/process": "^5.4.47"
   },
   "autoload": {
diff --git a/composer.lock b/composer.lock
index b28749e1..38817c5c 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "a59576f025172422ac893480a8da1701",
+    "content-hash": "31f0e1fba4524e34ac08c37e71265e3c",
     "packages": [
         {
             "name": "phpstan/phpstan",
diff --git a/test/Fixture/Classes/FinalRule/AbstractClass.php b/test/Fixture/Classes/FinalRule/AbstractClass.php
new file mode 100644
index 00000000..fa9f7101
--- /dev/null
+++ b/test/Fixture/Classes/FinalRule/AbstractClass.php
@@ -0,0 +1,9 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
+
+abstract class AbstractClass
+{
+}
diff --git a/test/Fixture/Classes/FinalRule/ExampleInterface.php b/test/Fixture/Classes/FinalRule/ExampleInterface.php
new file mode 100644
index 00000000..29931fc4
--- /dev/null
+++ b/test/Fixture/Classes/FinalRule/ExampleInterface.php
@@ -0,0 +1,9 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
+
+interface ExampleInterface
+{
+}
diff --git a/test/Fixture/Classes/FinalRule/ExampleTrait.php b/test/Fixture/Classes/FinalRule/ExampleTrait.php
new file mode 100644
index 00000000..51f789bc
--- /dev/null
+++ b/test/Fixture/Classes/FinalRule/ExampleTrait.php
@@ -0,0 +1,9 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
+
+trait ExampleTrait
+{
+}
diff --git a/test/Fixture/Classes/FinalRule/Failure/AbstractClass.php b/test/Fixture/Classes/FinalRule/Failure/AbstractClass.php
deleted file mode 100644
index 39b3fb9a..00000000
--- a/test/Fixture/Classes/FinalRule/Failure/AbstractClass.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule\Failure;
-
-abstract class AbstractClass
-{
-}
diff --git a/test/Fixture/Classes/FinalRule/FinalClass.php b/test/Fixture/Classes/FinalRule/FinalClass.php
new file mode 100644
index 00000000..60942793
--- /dev/null
+++ b/test/Fixture/Classes/FinalRule/FinalClass.php
@@ -0,0 +1,9 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
+
+final class FinalClass
+{
+}
diff --git a/test/Fixture/Classes/FinalRule/Success/FinalClassWithAnonymousClass.php b/test/Fixture/Classes/FinalRule/FinalClassWithAnonymousClass.php
similarity index 78%
rename from test/Fixture/Classes/FinalRule/Success/FinalClassWithAnonymousClass.php
rename to test/Fixture/Classes/FinalRule/FinalClassWithAnonymousClass.php
index 692fadb2..13324941 100644
--- a/test/Fixture/Classes/FinalRule/Success/FinalClassWithAnonymousClass.php
+++ b/test/Fixture/Classes/FinalRule/FinalClassWithAnonymousClass.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 final class FinalClassWithAnonymousClass
 {
diff --git a/test/Fixture/Classes/FinalRule/Failure/NeitherAbstractNorFinalClass.php b/test/Fixture/Classes/FinalRule/NeitherAbstractNorFinalClass.php
similarity index 50%
rename from test/Fixture/Classes/FinalRule/Failure/NeitherAbstractNorFinalClass.php
rename to test/Fixture/Classes/FinalRule/NeitherAbstractNorFinalClass.php
index 6ff2d358..72fd9778 100644
--- a/test/Fixture/Classes/FinalRule/Failure/NeitherAbstractNorFinalClass.php
+++ b/test/Fixture/Classes/FinalRule/NeitherAbstractNorFinalClass.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 class NeitherAbstractNorFinalClass
 {
diff --git a/test/Fixture/Classes/FinalRuleWithAttributes/Success/NonFinalClassWithAliasedOrmEntityAttribute.php b/test/Fixture/Classes/FinalRule/NonFinalClassWithAliasedOrmEntityAttribute.php
similarity index 61%
rename from test/Fixture/Classes/FinalRuleWithAttributes/Success/NonFinalClassWithAliasedOrmEntityAttribute.php
rename to test/Fixture/Classes/FinalRule/NonFinalClassWithAliasedOrmEntityAttribute.php
index 1f33f289..f6fb3a69 100644
--- a/test/Fixture/Classes/FinalRuleWithAttributes/Success/NonFinalClassWithAliasedOrmEntityAttribute.php
+++ b/test/Fixture/Classes/FinalRule/NonFinalClassWithAliasedOrmEntityAttribute.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithAttributes\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 use Doctrine\ORM\Mapping as ORM;
 
diff --git a/test/Fixture/Classes/FinalRule/Success/NonFinalClassWithEntityAnnotationInInlineDocBlock.php b/test/Fixture/Classes/FinalRule/NonFinalClassWithEntityAnnotationInInlineDocBlock.php
similarity index 59%
rename from test/Fixture/Classes/FinalRule/Success/NonFinalClassWithEntityAnnotationInInlineDocBlock.php
rename to test/Fixture/Classes/FinalRule/NonFinalClassWithEntityAnnotationInInlineDocBlock.php
index 415eed8f..549c9139 100644
--- a/test/Fixture/Classes/FinalRule/Success/NonFinalClassWithEntityAnnotationInInlineDocBlock.php
+++ b/test/Fixture/Classes/FinalRule/NonFinalClassWithEntityAnnotationInInlineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 /** @Entity */
 class NonFinalClassWithEntityAnnotationInInlineDocBlock
diff --git a/test/Fixture/Classes/FinalRule/Success/NonFinalClassWithEntityAnnotationInMultilineDocBlock.php b/test/Fixture/Classes/FinalRule/NonFinalClassWithEntityAnnotationInMultilineDocBlock.php
similarity index 65%
rename from test/Fixture/Classes/FinalRule/Success/NonFinalClassWithEntityAnnotationInMultilineDocBlock.php
rename to test/Fixture/Classes/FinalRule/NonFinalClassWithEntityAnnotationInMultilineDocBlock.php
index c65052c3..71b50cdc 100644
--- a/test/Fixture/Classes/FinalRule/Success/NonFinalClassWithEntityAnnotationInMultilineDocBlock.php
+++ b/test/Fixture/Classes/FinalRule/NonFinalClassWithEntityAnnotationInMultilineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 /**
  * @Table(name="hmm")
diff --git a/test/Fixture/Classes/FinalRule/Success/NonFinalClassWithOrmEntityAnnotationInInlineDocBlock.php b/test/Fixture/Classes/FinalRule/NonFinalClassWithOrmEntityAnnotationInInlineDocBlock.php
similarity index 61%
rename from test/Fixture/Classes/FinalRule/Success/NonFinalClassWithOrmEntityAnnotationInInlineDocBlock.php
rename to test/Fixture/Classes/FinalRule/NonFinalClassWithOrmEntityAnnotationInInlineDocBlock.php
index 0701a815..9702b549 100644
--- a/test/Fixture/Classes/FinalRule/Success/NonFinalClassWithOrmEntityAnnotationInInlineDocBlock.php
+++ b/test/Fixture/Classes/FinalRule/NonFinalClassWithOrmEntityAnnotationInInlineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 /** @ORM\Entity */
 class NonFinalClassWithOrmEntityAnnotationInInlineDocBlock
diff --git a/test/Fixture/Classes/FinalRule/Success/NonFinalClassWithOrmEntityAnnotationInMultilineDocBlock.php b/test/Fixture/Classes/FinalRule/NonFinalClassWithOrmEntityAnnotationInMultilineDocBlock.php
similarity index 67%
rename from test/Fixture/Classes/FinalRule/Success/NonFinalClassWithOrmEntityAnnotationInMultilineDocBlock.php
rename to test/Fixture/Classes/FinalRule/NonFinalClassWithOrmEntityAnnotationInMultilineDocBlock.php
index 512df803..5f1fc02a 100644
--- a/test/Fixture/Classes/FinalRule/Success/NonFinalClassWithOrmEntityAnnotationInMultilineDocBlock.php
+++ b/test/Fixture/Classes/FinalRule/NonFinalClassWithOrmEntityAnnotationInMultilineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 /**
  * @ORM\Table(name="hmm")
diff --git a/test/Fixture/Classes/FinalRule/Success/NonFinalClassWithOrmMappingEntityAnnotationInInlineDocBlock.php b/test/Fixture/Classes/FinalRule/NonFinalClassWithOrmMappingEntityAnnotationInInlineDocBlock.php
similarity index 64%
rename from test/Fixture/Classes/FinalRule/Success/NonFinalClassWithOrmMappingEntityAnnotationInInlineDocBlock.php
rename to test/Fixture/Classes/FinalRule/NonFinalClassWithOrmMappingEntityAnnotationInInlineDocBlock.php
index c9fd0475..cb365a83 100644
--- a/test/Fixture/Classes/FinalRule/Success/NonFinalClassWithOrmMappingEntityAnnotationInInlineDocBlock.php
+++ b/test/Fixture/Classes/FinalRule/NonFinalClassWithOrmMappingEntityAnnotationInInlineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 /** @ORM\Mapping\Entity */
 class NonFinalClassWithOrmMappingEntityAnnotationInInlineDocBlock
diff --git a/test/Fixture/Classes/FinalRule/Success/NonFinalClassWithOrmMappingEntityAnnotationInMultilineDocBlock.php b/test/Fixture/Classes/FinalRule/NonFinalClassWithOrmMappingEntityAnnotationInMultilineDocBlock.php
similarity index 70%
rename from test/Fixture/Classes/FinalRule/Success/NonFinalClassWithOrmMappingEntityAnnotationInMultilineDocBlock.php
rename to test/Fixture/Classes/FinalRule/NonFinalClassWithOrmMappingEntityAnnotationInMultilineDocBlock.php
index 7b50484c..37102295 100644
--- a/test/Fixture/Classes/FinalRule/Success/NonFinalClassWithOrmMappingEntityAnnotationInMultilineDocBlock.php
+++ b/test/Fixture/Classes/FinalRule/NonFinalClassWithOrmMappingEntityAnnotationInMultilineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 /**
  * @ORM\Mapping\Table(name="hmm")
diff --git a/test/Fixture/Classes/FinalRuleWithAttributes/Success/NonFinalClassWithQualifiedDoctrineOrmMappingEntityAttribute.php b/test/Fixture/Classes/FinalRule/NonFinalClassWithQualifiedDoctrineOrmMappingEntityAttribute.php
similarity index 61%
rename from test/Fixture/Classes/FinalRuleWithAttributes/Success/NonFinalClassWithQualifiedDoctrineOrmMappingEntityAttribute.php
rename to test/Fixture/Classes/FinalRule/NonFinalClassWithQualifiedDoctrineOrmMappingEntityAttribute.php
index 0e043a57..9798258e 100644
--- a/test/Fixture/Classes/FinalRuleWithAttributes/Success/NonFinalClassWithQualifiedDoctrineOrmMappingEntityAttribute.php
+++ b/test/Fixture/Classes/FinalRule/NonFinalClassWithQualifiedDoctrineOrmMappingEntityAttribute.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithAttributes\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 #[\Doctrine\ORM\Mapping\Entity()]
 class NonFinalClassWithQualifiedDoctrineOrmMappingEntityAttribute
diff --git a/test/Fixture/Classes/FinalRuleWithAttributes/Success/NonFinalClassWithQualifiedEntityAttribute.php b/test/Fixture/Classes/FinalRule/NonFinalClassWithQualifiedEntityAttribute.php
similarity index 60%
rename from test/Fixture/Classes/FinalRuleWithAttributes/Success/NonFinalClassWithQualifiedEntityAttribute.php
rename to test/Fixture/Classes/FinalRule/NonFinalClassWithQualifiedEntityAttribute.php
index 66423662..5e3434f3 100644
--- a/test/Fixture/Classes/FinalRuleWithAttributes/Success/NonFinalClassWithQualifiedEntityAttribute.php
+++ b/test/Fixture/Classes/FinalRule/NonFinalClassWithQualifiedEntityAttribute.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithAttributes\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 use Doctrine\ORM\Mapping\Entity;
 
diff --git a/test/Fixture/Classes/FinalRuleWithAttributes/Success/NonFinalClassWithQualifiedMappingEntityAttribute.php b/test/Fixture/Classes/FinalRule/NonFinalClassWithQualifiedMappingEntityAttribute.php
similarity index 61%
rename from test/Fixture/Classes/FinalRuleWithAttributes/Success/NonFinalClassWithQualifiedMappingEntityAttribute.php
rename to test/Fixture/Classes/FinalRule/NonFinalClassWithQualifiedMappingEntityAttribute.php
index 403945d7..27821ef6 100644
--- a/test/Fixture/Classes/FinalRuleWithAttributes/Success/NonFinalClassWithQualifiedMappingEntityAttribute.php
+++ b/test/Fixture/Classes/FinalRule/NonFinalClassWithQualifiedMappingEntityAttribute.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithAttributes\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 use Doctrine\ORM\Mapping;
 
diff --git a/test/Fixture/Classes/FinalRuleWithAttributes/Success/NonFinalClassWithQualifiedOrmMappingEntityAttribute.php b/test/Fixture/Classes/FinalRule/NonFinalClassWithQualifiedOrmMappingEntityAttribute.php
similarity index 61%
rename from test/Fixture/Classes/FinalRuleWithAttributes/Success/NonFinalClassWithQualifiedOrmMappingEntityAttribute.php
rename to test/Fixture/Classes/FinalRule/NonFinalClassWithQualifiedOrmMappingEntityAttribute.php
index 732e0639..49fee1f4 100644
--- a/test/Fixture/Classes/FinalRuleWithAttributes/Success/NonFinalClassWithQualifiedOrmMappingEntityAttribute.php
+++ b/test/Fixture/Classes/FinalRule/NonFinalClassWithQualifiedOrmMappingEntityAttribute.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithAttributes\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 use Doctrine\ORM;
 
diff --git a/test/Fixture/Classes/FinalRuleWithAttributes/Failure/NonFinalClassWithUnqualifiedDoctrineOrmMappingEntityAttribute.php b/test/Fixture/Classes/FinalRule/NonFinalClassWithUnqualifiedDoctrineOrmMappingEntityAttribute.php
similarity index 61%
rename from test/Fixture/Classes/FinalRuleWithAttributes/Failure/NonFinalClassWithUnqualifiedDoctrineOrmMappingEntityAttribute.php
rename to test/Fixture/Classes/FinalRule/NonFinalClassWithUnqualifiedDoctrineOrmMappingEntityAttribute.php
index 36b76625..95ab982a 100644
--- a/test/Fixture/Classes/FinalRuleWithAttributes/Failure/NonFinalClassWithUnqualifiedDoctrineOrmMappingEntityAttribute.php
+++ b/test/Fixture/Classes/FinalRule/NonFinalClassWithUnqualifiedDoctrineOrmMappingEntityAttribute.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithAttributes\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 #[Doctrine\ORM\Mapping\Entity()]
 class NonFinalClassWithUnqualifiedDoctrineOrmMappingEntityAttribute
diff --git a/test/Fixture/Classes/FinalRuleWithAttributes/Failure/NonFinalClassWithUnqualifiedEntityAttribute.php b/test/Fixture/Classes/FinalRule/NonFinalClassWithUnqualifiedEntityAttribute.php
similarity index 53%
rename from test/Fixture/Classes/FinalRuleWithAttributes/Failure/NonFinalClassWithUnqualifiedEntityAttribute.php
rename to test/Fixture/Classes/FinalRule/NonFinalClassWithUnqualifiedEntityAttribute.php
index a89d3ed5..3fc3b8fd 100644
--- a/test/Fixture/Classes/FinalRuleWithAttributes/Failure/NonFinalClassWithUnqualifiedEntityAttribute.php
+++ b/test/Fixture/Classes/FinalRule/NonFinalClassWithUnqualifiedEntityAttribute.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithAttributes\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 #[Entity()]
 class NonFinalClassWithUnqualifiedEntityAttribute
diff --git a/test/Fixture/Classes/FinalRuleWithAttributes/Failure/NonFinalClassWithUnqualifiedOrmEntityAttribute.php b/test/Fixture/Classes/FinalRule/NonFinalClassWithUnqualifiedOrmEntityAttribute.php
similarity index 55%
rename from test/Fixture/Classes/FinalRuleWithAttributes/Failure/NonFinalClassWithUnqualifiedOrmEntityAttribute.php
rename to test/Fixture/Classes/FinalRule/NonFinalClassWithUnqualifiedOrmEntityAttribute.php
index beef8900..313ff044 100644
--- a/test/Fixture/Classes/FinalRuleWithAttributes/Failure/NonFinalClassWithUnqualifiedOrmEntityAttribute.php
+++ b/test/Fixture/Classes/FinalRule/NonFinalClassWithUnqualifiedOrmEntityAttribute.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithAttributes\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 #[ORM\Entity()]
 class NonFinalClassWithUnqualifiedOrmEntityAttribute
diff --git a/test/Fixture/Classes/FinalRuleWithAttributes/Failure/NonFinalClassWithUnqualifiedOrmMappingEntityAttribute.php b/test/Fixture/Classes/FinalRule/NonFinalClassWithUnqualifiedOrmMappingEntityAttribute.php
similarity index 58%
rename from test/Fixture/Classes/FinalRuleWithAttributes/Failure/NonFinalClassWithUnqualifiedOrmMappingEntityAttribute.php
rename to test/Fixture/Classes/FinalRule/NonFinalClassWithUnqualifiedOrmMappingEntityAttribute.php
index 63084596..b047200c 100644
--- a/test/Fixture/Classes/FinalRuleWithAttributes/Failure/NonFinalClassWithUnqualifiedOrmMappingEntityAttribute.php
+++ b/test/Fixture/Classes/FinalRule/NonFinalClassWithUnqualifiedOrmMappingEntityAttribute.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithAttributes\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 #[ORM\Mapping\Entity()]
 class NonFinalClassWithUnqualifiedOrmMappingEntityAttribute
diff --git a/test/Fixture/Classes/FinalRule/Failure/NonFinalClassWithoutEntityAnnotationInInlineDocBlock.php b/test/Fixture/Classes/FinalRule/NonFinalClassWithoutEntityAnnotationInInlineDocBlock.php
similarity index 60%
rename from test/Fixture/Classes/FinalRule/Failure/NonFinalClassWithoutEntityAnnotationInInlineDocBlock.php
rename to test/Fixture/Classes/FinalRule/NonFinalClassWithoutEntityAnnotationInInlineDocBlock.php
index b97200c6..f035cf83 100644
--- a/test/Fixture/Classes/FinalRule/Failure/NonFinalClassWithoutEntityAnnotationInInlineDocBlock.php
+++ b/test/Fixture/Classes/FinalRule/NonFinalClassWithoutEntityAnnotationInInlineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 /** @eNtItY */
 class NonFinalClassWithoutEntityAnnotationInInlineDocBlock
diff --git a/test/Fixture/Classes/FinalRule/Failure/NonFinalClassWithoutEntityAnnotationInMultilineDocBlock.php b/test/Fixture/Classes/FinalRule/NonFinalClassWithoutEntityAnnotationInMultilineDocBlock.php
similarity index 66%
rename from test/Fixture/Classes/FinalRule/Failure/NonFinalClassWithoutEntityAnnotationInMultilineDocBlock.php
rename to test/Fixture/Classes/FinalRule/NonFinalClassWithoutEntityAnnotationInMultilineDocBlock.php
index dcc8ffa1..9d6562a1 100644
--- a/test/Fixture/Classes/FinalRule/Failure/NonFinalClassWithoutEntityAnnotationInMultilineDocBlock.php
+++ b/test/Fixture/Classes/FinalRule/NonFinalClassWithoutEntityAnnotationInMultilineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 /**
  * @Table(name="hmm")
diff --git a/test/Fixture/Classes/FinalRule/Failure/NonFinalClassWithoutOrmEntityAnnotationInInlineDocBlock.php b/test/Fixture/Classes/FinalRule/NonFinalClassWithoutOrmEntityAnnotationInInlineDocBlock.php
similarity index 61%
rename from test/Fixture/Classes/FinalRule/Failure/NonFinalClassWithoutOrmEntityAnnotationInInlineDocBlock.php
rename to test/Fixture/Classes/FinalRule/NonFinalClassWithoutOrmEntityAnnotationInInlineDocBlock.php
index c54c9e6a..06d13324 100644
--- a/test/Fixture/Classes/FinalRule/Failure/NonFinalClassWithoutOrmEntityAnnotationInInlineDocBlock.php
+++ b/test/Fixture/Classes/FinalRule/NonFinalClassWithoutOrmEntityAnnotationInInlineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 /** @OrM\eNtItY */
 class NonFinalClassWithoutOrmEntityAnnotationInInlineDocBlock
diff --git a/test/Fixture/Classes/FinalRule/Failure/NonFinalClassWithoutOrmEntityAnnotationInMultilineDocBlock.php b/test/Fixture/Classes/FinalRule/NonFinalClassWithoutOrmEntityAnnotationInMultilineDocBlock.php
similarity index 67%
rename from test/Fixture/Classes/FinalRule/Failure/NonFinalClassWithoutOrmEntityAnnotationInMultilineDocBlock.php
rename to test/Fixture/Classes/FinalRule/NonFinalClassWithoutOrmEntityAnnotationInMultilineDocBlock.php
index 0c358d77..b9f32740 100644
--- a/test/Fixture/Classes/FinalRule/Failure/NonFinalClassWithoutOrmEntityAnnotationInMultilineDocBlock.php
+++ b/test/Fixture/Classes/FinalRule/NonFinalClassWithoutOrmEntityAnnotationInMultilineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 /**
  * @ORM\Table(name="hmm")
diff --git a/test/Fixture/Classes/FinalRule/Success/ExampleInterface.php b/test/Fixture/Classes/FinalRule/Success/ExampleInterface.php
deleted file mode 100644
index b0efe1c5..00000000
--- a/test/Fixture/Classes/FinalRule/Success/ExampleInterface.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule\Success;
-
-interface ExampleInterface
-{
-}
diff --git a/test/Fixture/Classes/FinalRule/Success/ExampleTrait.php b/test/Fixture/Classes/FinalRule/Success/ExampleTrait.php
deleted file mode 100644
index f9aee16f..00000000
--- a/test/Fixture/Classes/FinalRule/Success/ExampleTrait.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule\Success;
-
-trait ExampleTrait
-{
-}
diff --git a/test/Fixture/Classes/FinalRule/Success/FinalClass.php b/test/Fixture/Classes/FinalRule/Success/FinalClass.php
deleted file mode 100644
index 670e6537..00000000
--- a/test/Fixture/Classes/FinalRule/Success/FinalClass.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule\Success;
-
-final class FinalClass
-{
-}
diff --git a/test/Fixture/Classes/FinalRule/Success/TraitWithAnonymousClass.php b/test/Fixture/Classes/FinalRule/TraitWithAnonymousClass.php
similarity index 77%
rename from test/Fixture/Classes/FinalRule/Success/TraitWithAnonymousClass.php
rename to test/Fixture/Classes/FinalRule/TraitWithAnonymousClass.php
index 7d39445c..c2234434 100644
--- a/test/Fixture/Classes/FinalRule/Success/TraitWithAnonymousClass.php
+++ b/test/Fixture/Classes/FinalRule/TraitWithAnonymousClass.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 trait TraitWithAnonymousClass
 {
diff --git a/test/Fixture/Classes/FinalRule/Success/anonymous-class.php b/test/Fixture/Classes/FinalRule/script.php
similarity index 64%
rename from test/Fixture/Classes/FinalRule/Success/anonymous-class.php
rename to test/Fixture/Classes/FinalRule/script.php
index 4b66e570..741c148e 100644
--- a/test/Fixture/Classes/FinalRule/Success/anonymous-class.php
+++ b/test/Fixture/Classes/FinalRule/script.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRule;
 
 $foo = new class() {
     public function __toString(): string
diff --git a/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Failure/AbstractClass.php b/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Failure/AbstractClass.php
deleted file mode 100644
index dbe75613..00000000
--- a/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Failure/AbstractClass.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithAbstractClassesAllowed\Failure;
-
-abstract class AbstractClass
-{
-}
diff --git a/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Failure/NeitherAbstractNorFinalClass.php b/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Failure/NeitherAbstractNorFinalClass.php
deleted file mode 100644
index 2e04e8c8..00000000
--- a/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Failure/NeitherAbstractNorFinalClass.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithAbstractClassesAllowed\Failure;
-
-class NeitherAbstractNorFinalClass
-{
-}
diff --git a/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/ExampleInterface.php b/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/ExampleInterface.php
deleted file mode 100644
index fde0555c..00000000
--- a/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/ExampleInterface.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithAbstractClassesAllowed\Success;
-
-interface ExampleInterface
-{
-}
diff --git a/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/ExampleTrait.php b/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/ExampleTrait.php
deleted file mode 100644
index 1679795e..00000000
--- a/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/ExampleTrait.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithAbstractClassesAllowed\Success;
-
-trait ExampleTrait
-{
-}
diff --git a/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/FinalClass.php b/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/FinalClass.php
deleted file mode 100644
index 7235bbf4..00000000
--- a/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/FinalClass.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithAbstractClassesAllowed\Success;
-
-final class FinalClass
-{
-}
diff --git a/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/FinalClassWithAnonymousClass.php b/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/FinalClassWithAnonymousClass.php
deleted file mode 100644
index c1c7a3c3..00000000
--- a/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/FinalClassWithAnonymousClass.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithAbstractClassesAllowed\Success;
-
-final class FinalClassWithAnonymousClass
-{
-    public function create()
-    {
-        return new class() {
-            public function __toString(): string
-            {
-                return 'Hmm';
-            }
-        };
-    }
-}
diff --git a/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/TraitWithAnonymousClass.php b/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/TraitWithAnonymousClass.php
deleted file mode 100644
index 91b02e5b..00000000
--- a/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/TraitWithAnonymousClass.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithAbstractClassesAllowed\Success;
-
-trait TraitWithAnonymousClass
-{
-    public function create()
-    {
-        return new class() {
-            public function __toString(): string
-            {
-                return 'Hmm';
-            }
-        };
-    }
-}
diff --git a/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/anonymous-class.php b/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/anonymous-class.php
deleted file mode 100644
index b2624c11..00000000
--- a/test/Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/anonymous-class.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithAbstractClassesAllowed\Success;
-
-$foo = new class() {
-    public function __toString(): string
-    {
-        return 'Hmm';
-    }
-};
diff --git a/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Failure/AbstractClass.php b/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Failure/AbstractClass.php
deleted file mode 100644
index 59bfd77e..00000000
--- a/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Failure/AbstractClass.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithExcludedClassNames\Failure;
-
-abstract class AbstractClass
-{
-}
diff --git a/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Failure/NeitherAbstractNorFinalClass.php b/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Failure/NeitherAbstractNorFinalClass.php
deleted file mode 100644
index cb558404..00000000
--- a/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Failure/NeitherAbstractNorFinalClass.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithExcludedClassNames\Failure;
-
-class NeitherAbstractNorFinalClass
-{
-}
diff --git a/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/ExampleInterface.php b/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/ExampleInterface.php
deleted file mode 100644
index 30df859b..00000000
--- a/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/ExampleInterface.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithExcludedClassNames\Success;
-
-interface ExampleInterface
-{
-}
diff --git a/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/ExampleTrait.php b/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/ExampleTrait.php
deleted file mode 100644
index aa209397..00000000
--- a/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/ExampleTrait.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithExcludedClassNames\Success;
-
-trait ExampleTrait
-{
-}
diff --git a/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/FinalClass.php b/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/FinalClass.php
deleted file mode 100644
index 2409571b..00000000
--- a/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/FinalClass.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithExcludedClassNames\Success;
-
-final class FinalClass
-{
-}
diff --git a/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/FinalClassWithAnonymousClass.php b/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/FinalClassWithAnonymousClass.php
deleted file mode 100644
index 233227e6..00000000
--- a/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/FinalClassWithAnonymousClass.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithExcludedClassNames\Success;
-
-final class FinalClassWithAnonymousClass
-{
-    public function create()
-    {
-        return new class() {
-            public function __toString(): string
-            {
-                return 'Hmm';
-            }
-        };
-    }
-}
diff --git a/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/NeitherAbstractNorFinalClassButWhitelisted.php b/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/NeitherAbstractNorFinalClassButWhitelisted.php
deleted file mode 100644
index 6208610e..00000000
--- a/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/NeitherAbstractNorFinalClassButWhitelisted.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithExcludedClassNames\Success;
-
-class NeitherAbstractNorFinalClassButWhitelisted
-{
-}
diff --git a/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/TraitWithAnonymousClass.php b/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/TraitWithAnonymousClass.php
deleted file mode 100644
index 5fa8cfe1..00000000
--- a/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/TraitWithAnonymousClass.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithExcludedClassNames\Success;
-
-trait TraitWithAnonymousClass
-{
-    public function create()
-    {
-        return new class() {
-            public function __toString(): string
-            {
-                return 'Hmm';
-            }
-        };
-    }
-}
diff --git a/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/anonymous-class.php b/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/anonymous-class.php
deleted file mode 100644
index 374f2a03..00000000
--- a/test/Fixture/Classes/FinalRuleWithExcludedClassNames/Success/anonymous-class.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\FinalRuleWithExcludedClassNames\Success;
-
-$foo = new class() {
-    public function __toString(): string
-    {
-        return 'Hmm';
-    }
-};
diff --git a/test/Fixture/Classes/NoExtendsRule/Failure/ClassExtendingOtherClass.php b/test/Fixture/Classes/NoExtendsRule/ClassExtendingOtherClass.php
similarity index 92%
rename from test/Fixture/Classes/NoExtendsRule/Failure/ClassExtendingOtherClass.php
rename to test/Fixture/Classes/NoExtendsRule/ClassExtendingOtherClass.php
index 6f992526..2171884a 100644
--- a/test/Fixture/Classes/NoExtendsRule/Failure/ClassExtendingOtherClass.php
+++ b/test/Fixture/Classes/NoExtendsRule/ClassExtendingOtherClass.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRule;
 
 final class ClassExtendingOtherClass extends OtherClass
 {
diff --git a/test/Fixture/Classes/NoExtendsRule/Success/ClassExtendingPhpUnitFrameworkTestCase.php b/test/Fixture/Classes/NoExtendsRule/ClassExtendingPhpUnitFrameworkTestCase.php
similarity index 94%
rename from test/Fixture/Classes/NoExtendsRule/Success/ClassExtendingPhpUnitFrameworkTestCase.php
rename to test/Fixture/Classes/NoExtendsRule/ClassExtendingPhpUnitFrameworkTestCase.php
index e43df2d8..88d90421 100644
--- a/test/Fixture/Classes/NoExtendsRule/Success/ClassExtendingPhpUnitFrameworkTestCase.php
+++ b/test/Fixture/Classes/NoExtendsRule/ClassExtendingPhpUnitFrameworkTestCase.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRule;
 
 use PHPUnit\Framework;
 
diff --git a/test/Fixture/Classes/NoExtendsRule/Success/ExampleClass.php b/test/Fixture/Classes/NoExtendsRule/ExampleClass.php
similarity index 90%
rename from test/Fixture/Classes/NoExtendsRule/Success/ExampleClass.php
rename to test/Fixture/Classes/NoExtendsRule/ExampleClass.php
index 3873f33a..dda2793f 100644
--- a/test/Fixture/Classes/NoExtendsRule/Success/ExampleClass.php
+++ b/test/Fixture/Classes/NoExtendsRule/ExampleClass.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRule;
 
 final class ExampleClass
 {
diff --git a/test/Fixture/Classes/NoExtendsRule/Success/ExampleInterface.php b/test/Fixture/Classes/NoExtendsRule/ExampleInterface.php
similarity index 90%
rename from test/Fixture/Classes/NoExtendsRule/Success/ExampleInterface.php
rename to test/Fixture/Classes/NoExtendsRule/ExampleInterface.php
index 032c5003..e9bbb992 100644
--- a/test/Fixture/Classes/NoExtendsRule/Success/ExampleInterface.php
+++ b/test/Fixture/Classes/NoExtendsRule/ExampleInterface.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRule;
 
 interface ExampleInterface
 {
diff --git a/test/Fixture/Classes/NoExtendsRule/Failure/anonymous-class-extending-other-class.php b/test/Fixture/Classes/NoExtendsRule/Failure/anonymous-class-extending-other-class.php
deleted file mode 100644
index 383b1403..00000000
--- a/test/Fixture/Classes/NoExtendsRule/Failure/anonymous-class-extending-other-class.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRule\Failure;
-
-$foo = new class() extends OtherClass {
-    public function __toString(): string
-    {
-        return 'Hmm';
-    }
-};
diff --git a/test/Fixture/Classes/NoExtendsRule/Success/InterfaceExtendingOtherInterface.php b/test/Fixture/Classes/NoExtendsRule/InterfaceExtendingOtherInterface.php
similarity index 64%
rename from test/Fixture/Classes/NoExtendsRule/Success/InterfaceExtendingOtherInterface.php
rename to test/Fixture/Classes/NoExtendsRule/InterfaceExtendingOtherInterface.php
index 86536c28..e2c56c64 100644
--- a/test/Fixture/Classes/NoExtendsRule/Success/InterfaceExtendingOtherInterface.php
+++ b/test/Fixture/Classes/NoExtendsRule/InterfaceExtendingOtherInterface.php
@@ -2,7 +2,9 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRule;
+
+use Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRule\Success\OtherInterface;
 
 interface InterfaceExtendingOtherInterface extends OtherInterface
 {
diff --git a/test/Fixture/Classes/NoExtendsRule/Failure/OtherClass.php b/test/Fixture/Classes/NoExtendsRule/OtherClass.php
similarity index 90%
rename from test/Fixture/Classes/NoExtendsRule/Failure/OtherClass.php
rename to test/Fixture/Classes/NoExtendsRule/OtherClass.php
index 00834fb2..f8e5f210 100644
--- a/test/Fixture/Classes/NoExtendsRule/Failure/OtherClass.php
+++ b/test/Fixture/Classes/NoExtendsRule/OtherClass.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRule;
 
 class OtherClass
 {
diff --git a/test/Fixture/Classes/NoExtendsRule/Success/OtherInterface.php b/test/Fixture/Classes/NoExtendsRule/OtherInterface.php
similarity index 90%
rename from test/Fixture/Classes/NoExtendsRule/Success/OtherInterface.php
rename to test/Fixture/Classes/NoExtendsRule/OtherInterface.php
index 5f12fabd..e174235f 100644
--- a/test/Fixture/Classes/NoExtendsRule/Success/OtherInterface.php
+++ b/test/Fixture/Classes/NoExtendsRule/OtherInterface.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRule;
 
 interface OtherInterface
 {
diff --git a/test/Fixture/Classes/NoExtendsRule/Success/anonymous-class.php b/test/Fixture/Classes/NoExtendsRule/script.php
similarity index 58%
rename from test/Fixture/Classes/NoExtendsRule/Success/anonymous-class.php
rename to test/Fixture/Classes/NoExtendsRule/script.php
index 55d49249..50dba9fc 100644
--- a/test/Fixture/Classes/NoExtendsRule/Success/anonymous-class.php
+++ b/test/Fixture/Classes/NoExtendsRule/script.php
@@ -2,11 +2,10 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRule;
 
 $foo = new class() {
-    public function __toString(): string
-    {
-        return 'Hmm';
-    }
+};
+
+$bar = new class() extends OtherClass {
 };
diff --git a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Failure/ClassExtendingOtherClass.php b/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Failure/ClassExtendingOtherClass.php
deleted file mode 100644
index b5b93ab3..00000000
--- a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Failure/ClassExtendingOtherClass.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRuleWithClassesAllowedToBeExtended\Failure;
-
-final class ClassExtendingOtherClass extends OtherClass
-{
-}
diff --git a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Failure/OtherClass.php b/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Failure/OtherClass.php
deleted file mode 100644
index c93a445a..00000000
--- a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Failure/OtherClass.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRuleWithClassesAllowedToBeExtended\Failure;
-
-class OtherClass
-{
-}
diff --git a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Failure/anonymous-class-extending-other-class.php b/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Failure/anonymous-class-extending-other-class.php
deleted file mode 100644
index 9142d450..00000000
--- a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Failure/anonymous-class-extending-other-class.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRuleWithClassesAllowedToBeExtended\Failure;
-
-$foo = new class() extends OtherClass {
-    public function __toString(): string
-    {
-        return 'Hmm';
-    }
-};
diff --git a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/ClassAllowedToBeExtended.php b/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/ClassAllowedToBeExtended.php
deleted file mode 100644
index 4ad5e957..00000000
--- a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/ClassAllowedToBeExtended.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRuleWithClassesAllowedToBeExtended\Success;
-
-class ClassAllowedToBeExtended
-{
-}
diff --git a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/ClassExtendingClassAllowedToBeExtended.php b/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/ClassExtendingClassAllowedToBeExtended.php
deleted file mode 100644
index d6a535d0..00000000
--- a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/ClassExtendingClassAllowedToBeExtended.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRuleWithClassesAllowedToBeExtended\Success;
-
-final class ClassExtendingClassAllowedToBeExtended extends ClassAllowedToBeExtended
-{
-}
diff --git a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/ClassExtendingPhpUnitFrameworkTestCase.php b/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/ClassExtendingPhpUnitFrameworkTestCase.php
deleted file mode 100644
index 1745ed26..00000000
--- a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/ClassExtendingPhpUnitFrameworkTestCase.php
+++ /dev/null
@@ -1,11 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRuleWithClassesAllowedToBeExtended\Success;
-
-use PHPUnit\Framework;
-
-final class ClassExtendingPhpUnitFrameworkTestCase extends Framework\TestCase
-{
-}
diff --git a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/ExampleClass.php b/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/ExampleClass.php
deleted file mode 100644
index 924bb6ea..00000000
--- a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/ExampleClass.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRuleWithClassesAllowedToBeExtended\Success;
-
-final class ExampleClass
-{
-}
diff --git a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/ExampleInterface.php b/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/ExampleInterface.php
deleted file mode 100644
index 98cb5076..00000000
--- a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/ExampleInterface.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRuleWithClassesAllowedToBeExtended\Success;
-
-interface ExampleInterface
-{
-}
diff --git a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/InterfaceExtendingOtherInterface.php b/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/InterfaceExtendingOtherInterface.php
deleted file mode 100644
index 0d8f6e7c..00000000
--- a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/InterfaceExtendingOtherInterface.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRuleWithClassesAllowedToBeExtended\Success;
-
-interface InterfaceExtendingOtherInterface extends OtherInterface
-{
-}
diff --git a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/OtherInterface.php b/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/OtherInterface.php
deleted file mode 100644
index 1f8c9beb..00000000
--- a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/OtherInterface.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRuleWithClassesAllowedToBeExtended\Success;
-
-interface OtherInterface
-{
-}
diff --git a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/anonymous-class-extending-class-allowed-to-be-extended.php b/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/anonymous-class-extending-class-allowed-to-be-extended.php
deleted file mode 100644
index c9d69ce4..00000000
--- a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/anonymous-class-extending-class-allowed-to-be-extended.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRuleWithClassesAllowedToBeExtended\Success;
-
-$foo = new class() extends ClassAllowedToBeExtended {
-    public function __toString(): string
-    {
-        return 'Hmm';
-    }
-};
diff --git a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/anonymous-class.php b/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/anonymous-class.php
deleted file mode 100644
index 8b680907..00000000
--- a/test/Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/anonymous-class.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\NoExtendsRuleWithClassesAllowedToBeExtended\Success;
-
-$foo = new class() {
-    public function __toString(): string
-    {
-        return 'Hmm';
-    }
-};
diff --git a/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Failure/AbstractTestCase.php b/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/AbstractTestCase.php
similarity index 82%
rename from test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Failure/AbstractTestCase.php
rename to test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/AbstractTestCase.php
index 29d546c9..63c07a60 100644
--- a/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Failure/AbstractTestCase.php
+++ b/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/AbstractTestCase.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\PHPUnit\Framework\TestCaseWithSuffixRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\PHPUnit\Framework\TestCaseWithSuffixRule;
 
 use PHPUnit\Framework;
 
diff --git a/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/ConcreteTestCaseExtendingAbstractTestCaseWithoutSuffix.php b/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/ConcreteTestCaseExtendingAbstractTestCaseWithoutSuffix.php
new file mode 100644
index 00000000..4a682de9
--- /dev/null
+++ b/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/ConcreteTestCaseExtendingAbstractTestCaseWithoutSuffix.php
@@ -0,0 +1,9 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\PHPUnit\Framework\TestCaseWithSuffixRule;
+
+final class ConcreteTestCaseExtendingAbstractTestCaseWithoutSuffix extends AbstractTestCase
+{
+}
diff --git a/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Success/ConcreteTestCaseWithSuffixTest.php b/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/ConcreteTestCaseWithSuffixTest.php
similarity index 88%
rename from test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Success/ConcreteTestCaseWithSuffixTest.php
rename to test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/ConcreteTestCaseWithSuffixTest.php
index 38cdcebc..9b48a15a 100644
--- a/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Success/ConcreteTestCaseWithSuffixTest.php
+++ b/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/ConcreteTestCaseWithSuffixTest.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\PHPUnit\Framework\TestCaseWithSuffixRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\PHPUnit\Framework\TestCaseWithSuffixRule;
 
 use PHPUnit\Framework;
 
diff --git a/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Success/ExplicitlyAbstractTestCase.php b/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/ConcreteTestCaseWithoutSuffix.php
similarity index 55%
rename from test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Success/ExplicitlyAbstractTestCase.php
rename to test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/ConcreteTestCaseWithoutSuffix.php
index 882d7973..acc82ab1 100644
--- a/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Success/ExplicitlyAbstractTestCase.php
+++ b/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/ConcreteTestCaseWithoutSuffix.php
@@ -2,10 +2,10 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\PHPUnit\Framework\TestCaseWithSuffixRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\PHPUnit\Framework\TestCaseWithSuffixRule;
 
 use PHPUnit\Framework;
 
-abstract class ExplicitlyAbstractTestCase extends Framework\TestCase
+final class ConcreteTestCaseWithoutSuffix extends Framework\TestCase
 {
 }
diff --git a/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Failure/ConcreteTestCaseExtendingAbstractTestCaseWithoutTestSuffix.php b/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Failure/ConcreteTestCaseExtendingAbstractTestCaseWithoutTestSuffix.php
deleted file mode 100644
index 2119f099..00000000
--- a/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Failure/ConcreteTestCaseExtendingAbstractTestCaseWithoutTestSuffix.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\PHPUnit\Framework\TestCaseWithSuffixRule\Failure;
-
-final class ConcreteTestCaseExtendingAbstractTestCaseWithoutTestSuffix extends AbstractTestCase
-{
-}
diff --git a/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Failure/ConcreteTestCaseWithoutTestSuffix.php b/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Failure/ConcreteTestCaseWithoutTestSuffix.php
deleted file mode 100644
index 925e1bd7..00000000
--- a/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Failure/ConcreteTestCaseWithoutTestSuffix.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\PHPUnit\Framework\TestCaseWithSuffixRule\Failure;
-
-use PHPUnit\Framework;
-
-final class ConcreteTestCaseWithoutTestSuffix extends Framework\TestCase
-{
-    public function testFooIsNotBar(): void
-    {
-        self::assertNotSame('bar', 'foo');
-    }
-}
diff --git a/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Success/ImplicitlyAbstractTestCase.php b/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Success/ImplicitlyAbstractTestCase.php
deleted file mode 100644
index 4ad113f0..00000000
--- a/test/Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Success/ImplicitlyAbstractTestCase.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\PHPUnit\Framework\TestCaseWithSuffixRule\Success;
-
-use PHPUnit\Framework;
-
-class ImplicitlyAbstractTestCase extends Framework\TestCase
-{
-    abstract protected function foo();
-}
diff --git a/test/Fixture/Closures/NoNullableReturnTypeDeclarationRule/Failure/closure-with-nullable-return-type-declaration.php b/test/Fixture/Closures/NoNullableReturnTypeDeclarationRule/Failure/closure-with-nullable-return-type-declaration.php
deleted file mode 100644
index 307f5bd4..00000000
--- a/test/Fixture/Closures/NoNullableReturnTypeDeclarationRule/Failure/closure-with-nullable-return-type-declaration.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Closures\NoNullableReturnTypeDeclarationRule\Failure;
-
-$foo = function (): ?string {
-    return 'Hello';
-};
diff --git a/test/Fixture/Closures/NoNullableReturnTypeDeclarationRule/Failure/closure-with-nullable-union-type-return-type-declaration.php b/test/Fixture/Closures/NoNullableReturnTypeDeclarationRule/Failure/closure-with-nullable-union-type-return-type-declaration.php
deleted file mode 100644
index 7444402e..00000000
--- a/test/Fixture/Closures/NoNullableReturnTypeDeclarationRule/Failure/closure-with-nullable-union-type-return-type-declaration.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Closures\NoNullableReturnTypeDeclarationRule\Failure;
-
-$foo = function (): null|string {
-    return 'Hello';
-};
diff --git a/test/Fixture/Closures/NoNullableReturnTypeDeclarationRule/Success/closure-with-return-type-declaration.php b/test/Fixture/Closures/NoNullableReturnTypeDeclarationRule/Success/closure-with-return-type-declaration.php
deleted file mode 100644
index d65a5853..00000000
--- a/test/Fixture/Closures/NoNullableReturnTypeDeclarationRule/Success/closure-with-return-type-declaration.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Closures\NoNullableReturnTypeDeclarationRule\Success;
-
-$foo = function (): string {
-    return 'Hello';
-};
diff --git a/test/Fixture/Closures/NoNullableReturnTypeDeclarationRule/Success/closure-without-return-type-declaration.php b/test/Fixture/Closures/NoNullableReturnTypeDeclarationRule/Success/closure-without-return-type-declaration.php
deleted file mode 100644
index 14e0ea6e..00000000
--- a/test/Fixture/Closures/NoNullableReturnTypeDeclarationRule/Success/closure-without-return-type-declaration.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Closures\NoNullableReturnTypeDeclarationRule\Success;
-
-$foo = function () {
-    return 'Hello';
-};
diff --git a/test/Fixture/Closures/NoNullableReturnTypeDeclarationRule/script.php b/test/Fixture/Closures/NoNullableReturnTypeDeclarationRule/script.php
new file mode 100644
index 00000000..ca6393b8
--- /dev/null
+++ b/test/Fixture/Closures/NoNullableReturnTypeDeclarationRule/script.php
@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Closures\NoNullableReturnTypeDeclarationRule;
+
+$foo = function () {
+    return 'Hello';
+};
+
+$bar = function (): string {
+    return 'Hello';
+};
+
+$baz = function (): ?string {
+    return 'Hello';
+};
+
+$qux = function (): null|string {
+    return 'Hello';
+};
diff --git a/test/Fixture/Closures/NoParameterWithNullDefaultValueRule/Failure/closure-with-parameter-with-null-default-value.php b/test/Fixture/Closures/NoParameterWithNullDefaultValueRule/Failure/closure-with-parameter-with-null-default-value.php
deleted file mode 100644
index ef214945..00000000
--- a/test/Fixture/Closures/NoParameterWithNullDefaultValueRule/Failure/closure-with-parameter-with-null-default-value.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Closures\NoParameterWithNullDefaultValueRule\Success;
-
-$foo = function ($bar = null) {
-    return $bar;
-};
diff --git a/test/Fixture/Closures/NoParameterWithNullDefaultValueRule/Failure/closure-with-parameter-with-root-namespace-referenced-null-default-value.php b/test/Fixture/Closures/NoParameterWithNullDefaultValueRule/Failure/closure-with-parameter-with-root-namespace-referenced-null-default-value.php
deleted file mode 100644
index ef214945..00000000
--- a/test/Fixture/Closures/NoParameterWithNullDefaultValueRule/Failure/closure-with-parameter-with-root-namespace-referenced-null-default-value.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Closures\NoParameterWithNullDefaultValueRule\Success;
-
-$foo = function ($bar = null) {
-    return $bar;
-};
diff --git a/test/Fixture/Closures/NoParameterWithNullDefaultValueRule/Failure/closure-with-parameter-with-wrongly-capitalized-null-default-value.php b/test/Fixture/Closures/NoParameterWithNullDefaultValueRule/Failure/closure-with-parameter-with-wrongly-capitalized-null-default-value.php
deleted file mode 100644
index ef214945..00000000
--- a/test/Fixture/Closures/NoParameterWithNullDefaultValueRule/Failure/closure-with-parameter-with-wrongly-capitalized-null-default-value.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Closures\NoParameterWithNullDefaultValueRule\Success;
-
-$foo = function ($bar = null) {
-    return $bar;
-};
diff --git a/test/Fixture/Closures/NoParameterWithNullDefaultValueRule/Success/closure-with-parameter-with-non-null-default-value.php b/test/Fixture/Closures/NoParameterWithNullDefaultValueRule/Success/closure-with-parameter-with-non-null-default-value.php
deleted file mode 100644
index d4f08083..00000000
--- a/test/Fixture/Closures/NoParameterWithNullDefaultValueRule/Success/closure-with-parameter-with-non-null-default-value.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Closures\NoParameterWithNullDefaultValueRule\Success;
-
-$foo = function ($bar = true) {
-    return $bar;
-};
diff --git a/test/Fixture/Closures/NoParameterWithNullDefaultValueRule/Success/closure-with-parameter-without-default-value.php b/test/Fixture/Closures/NoParameterWithNullDefaultValueRule/Success/closure-with-parameter-without-default-value.php
deleted file mode 100644
index 0b377174..00000000
--- a/test/Fixture/Closures/NoParameterWithNullDefaultValueRule/Success/closure-with-parameter-without-default-value.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Closures\NoParameterWithNullDefaultValueRule\Success;
-
-$foo = function ($bar) {
-    return $bar;
-};
diff --git a/test/Fixture/Closures/NoParameterWithNullDefaultValueRule/Success/closure-without-parameters.php b/test/Fixture/Closures/NoParameterWithNullDefaultValueRule/Success/closure-without-parameters.php
deleted file mode 100644
index f0e11544..00000000
--- a/test/Fixture/Closures/NoParameterWithNullDefaultValueRule/Success/closure-without-parameters.php
+++ /dev/null
@@ -1,8 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Closures\NoParameterWithNullDefaultValueRule\Success;
-
-$foo = function (): void {
-};
diff --git a/test/Fixture/Closures/NoParameterWithNullDefaultValueRule/script.php b/test/Fixture/Closures/NoParameterWithNullDefaultValueRule/script.php
new file mode 100644
index 00000000..2146d8af
--- /dev/null
+++ b/test/Fixture/Closures/NoParameterWithNullDefaultValueRule/script.php
@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Closures\NoParameterWithNullDefaultValueRule;
+
+$foo = function (): void {
+};
+
+$bar = function ($bar) {
+    return $bar;
+};
+
+$baz = function ($bar = true) {
+    return $bar;
+};
+
+$qux = function ($bar = null) {
+    return $bar;
+};
+
+$quux = function ($bar = \null) {
+    return $bar;
+};
+
+$quz = function ($bar = NuLl) {
+    return $bar;
+};
diff --git a/test/Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/Failure/closure-with-parameter-with-nullable-type-declaration.php b/test/Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/Failure/closure-with-parameter-with-nullable-type-declaration.php
deleted file mode 100644
index 5c6d3c38..00000000
--- a/test/Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/Failure/closure-with-parameter-with-nullable-type-declaration.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Closures\NoParameterWithNullDefaultValueRule\Failure;
-
-$foo = function (?string $bar) {
-    return $bar;
-};
diff --git a/test/Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/Failure/closure-with-parameter-with-nullable-union-type-declaration.php b/test/Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/Failure/closure-with-parameter-with-nullable-union-type-declaration.php
deleted file mode 100644
index 690b3121..00000000
--- a/test/Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/Failure/closure-with-parameter-with-nullable-union-type-declaration.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Closures\NoParameterWithNullDefaultValueRule\Failure;
-
-$foo = function (null|string $bar) {
-    return $bar;
-};
diff --git a/test/Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/Success/closure-with-parameter-with-type-declaration.php b/test/Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/Success/closure-with-parameter-with-type-declaration.php
deleted file mode 100644
index 76a67c28..00000000
--- a/test/Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/Success/closure-with-parameter-with-type-declaration.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Closures\NoParameterWithNullDefaultValueRule\Success;
-
-$foo = function (string $bar) {
-    return $bar;
-};
diff --git a/test/Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/Success/closure-with-parameter-without-type-declaration.php b/test/Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/Success/closure-with-parameter-without-type-declaration.php
deleted file mode 100644
index 0b377174..00000000
--- a/test/Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/Success/closure-with-parameter-without-type-declaration.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Closures\NoParameterWithNullDefaultValueRule\Success;
-
-$foo = function ($bar) {
-    return $bar;
-};
diff --git a/test/Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/Success/closure-without-parameters.php b/test/Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/Success/closure-without-parameters.php
deleted file mode 100644
index f0e11544..00000000
--- a/test/Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/Success/closure-without-parameters.php
+++ /dev/null
@@ -1,8 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Closures\NoParameterWithNullDefaultValueRule\Success;
-
-$foo = function (): void {
-};
diff --git a/test/Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/script.php b/test/Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/script.php
new file mode 100644
index 00000000..8102440e
--- /dev/null
+++ b/test/Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/script.php
@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Closures\NoParameterWithNullDefaultValueRule;
+
+$foo = function (): void {
+};
+
+$bar = function ($bar) {
+    return $bar;
+};
+
+$baz = function (string $bar): string {
+    return $bar;
+};
+
+$qux = function (?string $bar) {
+    return $bar;
+};
+
+$quux = function (null|string $bar) {
+    return $bar;
+};
diff --git a/test/Fixture/Expressions/NoCompactRule/Failure/compact-used-with-alias.php b/test/Fixture/Expressions/NoCompactRule/Failure/compact-used-with-alias.php
deleted file mode 100644
index dcf14c48..00000000
--- a/test/Fixture/Expressions/NoCompactRule/Failure/compact-used-with-alias.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Expressions\NoCompactRule\Failure;
-
-use function compact as compress;
-
-$foo = 9000;
-$bar = 42;
-
-return compress(
-    'foo',
-    'bar',
-);
diff --git a/test/Fixture/Expressions/NoCompactRule/Failure/compact-used-with-correct-case.php b/test/Fixture/Expressions/NoCompactRule/Failure/compact-used-with-correct-case.php
deleted file mode 100644
index 378d8545..00000000
--- a/test/Fixture/Expressions/NoCompactRule/Failure/compact-used-with-correct-case.php
+++ /dev/null
@@ -1,13 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Expressions\NoCompactRule\Failure;
-
-$foo = 9000;
-$bar = 42;
-
-return \compact(
-    'foo',
-    'bar',
-);
diff --git a/test/Fixture/Expressions/NoCompactRule/Failure/compact-used-with-incorrect-case.php b/test/Fixture/Expressions/NoCompactRule/Failure/compact-used-with-incorrect-case.php
deleted file mode 100644
index 65c28131..00000000
--- a/test/Fixture/Expressions/NoCompactRule/Failure/compact-used-with-incorrect-case.php
+++ /dev/null
@@ -1,13 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Expressions\NoCompactRule\Failure;
-
-$foo = 9000;
-$bar = 42;
-
-return \cOmPaCt(
-    'foo',
-    'bar',
-);
diff --git a/test/Fixture/Expressions/NoCompactRule/Success/compact-not-used.php b/test/Fixture/Expressions/NoCompactRule/script.php
similarity index 53%
rename from test/Fixture/Expressions/NoCompactRule/Success/compact-not-used.php
rename to test/Fixture/Expressions/NoCompactRule/script.php
index f8739d11..17a8bfdc 100644
--- a/test/Fixture/Expressions/NoCompactRule/Success/compact-not-used.php
+++ b/test/Fixture/Expressions/NoCompactRule/script.php
@@ -2,7 +2,9 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Expressions\NoCompactRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Expressions\NoCompactRule;
+
+use function compact as compress;
 
 function _compact(string ...$names): array
 {
@@ -12,7 +14,22 @@ function _compact(string ...$names): array
 $foo = 9000;
 $bar = 42;
 
-return _compact(
+$baz = _compact(
+    'foo',
+    'bar',
+);
+
+$qux = \compact(
+    'foo',
+    'bar',
+);
+
+$quux = cOmPaCt(
+    'foo',
+    'bar',
+);
+
+$quz = compress(
     'foo',
     'bar',
 );
diff --git a/test/Fixture/Expressions/NoErrorSuppressionRule/Success/error-suppression-not-used.php b/test/Fixture/Expressions/NoErrorSuppressionRule/Success/error-suppression-not-used.php
deleted file mode 100644
index da04ddb9..00000000
--- a/test/Fixture/Expressions/NoErrorSuppressionRule/Success/error-suppression-not-used.php
+++ /dev/null
@@ -1,7 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Expressions\NoErrorSuppressionRule\Success;
-
-\serialize($value);
diff --git a/test/Fixture/Expressions/NoErrorSuppressionRule/Failure/error-suppression-used.php b/test/Fixture/Expressions/NoErrorSuppressionRule/script.php
similarity index 75%
rename from test/Fixture/Expressions/NoErrorSuppressionRule/Failure/error-suppression-used.php
rename to test/Fixture/Expressions/NoErrorSuppressionRule/script.php
index e913560a..7ad40277 100644
--- a/test/Fixture/Expressions/NoErrorSuppressionRule/Failure/error-suppression-used.php
+++ b/test/Fixture/Expressions/NoErrorSuppressionRule/script.php
@@ -2,6 +2,8 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Expressions\NoErrorSuppressionRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Expressions\NoErrorSuppressionRule;
+
+\serialize($value);
 
 @\serialize($value);
diff --git a/test/Fixture/Expressions/NoEvalRule/Failure/eval-used-with-correct-case.php b/test/Fixture/Expressions/NoEvalRule/Failure/eval-used-with-correct-case.php
deleted file mode 100644
index cef6df64..00000000
--- a/test/Fixture/Expressions/NoEvalRule/Failure/eval-used-with-correct-case.php
+++ /dev/null
@@ -1,7 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Expressions\NoEvalRule\Failure;
-
-eval('echo $foo');
diff --git a/test/Fixture/Expressions/NoEvalRule/Failure/eval-used-with-incorrect-case.php b/test/Fixture/Expressions/NoEvalRule/Failure/eval-used-with-incorrect-case.php
deleted file mode 100644
index 5bd181da..00000000
--- a/test/Fixture/Expressions/NoEvalRule/Failure/eval-used-with-incorrect-case.php
+++ /dev/null
@@ -1,7 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Expressions\NoEvalRule\Failure;
-
-eVaL('echo $foo');
diff --git a/test/Fixture/Expressions/NoEvalRule/Success/eval-not-used.php b/test/Fixture/Expressions/NoEvalRule/script.php
similarity index 77%
rename from test/Fixture/Expressions/NoEvalRule/Success/eval-not-used.php
rename to test/Fixture/Expressions/NoEvalRule/script.php
index a91082bf..ec6a6901 100644
--- a/test/Fixture/Expressions/NoEvalRule/Success/eval-not-used.php
+++ b/test/Fixture/Expressions/NoEvalRule/script.php
@@ -2,10 +2,14 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Expressions\NoEvalRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Expressions\NoEvalRule;
 
 function _eval(string $argument): void
 {
 }
 
 _eval('echo $foo');
+
+eval('echo $foo');
+
+eVaL('echo $foo');
diff --git a/test/Fixture/Expressions/NoIssetRule/Failure/isset-used-with-correct-case.php b/test/Fixture/Expressions/NoIssetRule/Failure/isset-used-with-correct-case.php
deleted file mode 100644
index 41bd5f43..00000000
--- a/test/Fixture/Expressions/NoIssetRule/Failure/isset-used-with-correct-case.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Expressions\NoIssetRule\Failure;
-
-if (isset($foo)) {
-    echo 'Hello!';
-}
diff --git a/test/Fixture/Expressions/NoIssetRule/Failure/isset-used-with-incorrect-case.php b/test/Fixture/Expressions/NoIssetRule/Failure/isset-used-with-incorrect-case.php
deleted file mode 100644
index b0dadb89..00000000
--- a/test/Fixture/Expressions/NoIssetRule/Failure/isset-used-with-incorrect-case.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Expressions\NoIssetRule\Failure;
-
-if (iSsEt($foo)) {
-    echo 'Hello!';
-}
diff --git a/test/Fixture/Expressions/NoIssetRule/Success/isset-not-used.php b/test/Fixture/Expressions/NoIssetRule/script.php
similarity index 67%
rename from test/Fixture/Expressions/NoIssetRule/Success/isset-not-used.php
rename to test/Fixture/Expressions/NoIssetRule/script.php
index a4786501..897b477e 100644
--- a/test/Fixture/Expressions/NoIssetRule/Success/isset-not-used.php
+++ b/test/Fixture/Expressions/NoIssetRule/script.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Expressions\NoIssetRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Expressions\NoIssetRule;
 
 function _isset(): bool
 {
@@ -12,3 +12,11 @@ function _isset(): bool
 if (_isset()) {
     echo 'Hello!';
 }
+
+if (isset($foo)) {
+    echo 'Hello!';
+}
+
+if (iSsEt($foo)) {
+    echo 'Hello!';
+}
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Success/file-empty.php b/test/Fixture/Files/DeclareStrictTypesRule/file-empty.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Success/file-empty.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-empty.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-comment-and-declare-strict-types-off-and-invalid-casing.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-comment-and-declare-strict-types-off-and-invalid-casing.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-comment-and-declare-strict-types-off-and-invalid-casing.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-comment-and-declare-strict-types-off-and-invalid-casing.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-comment-and-declare-strict-types-off-and-multiple-declares.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-comment-and-declare-strict-types-off-and-multiple-declares.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-comment-and-declare-strict-types-off-and-multiple-declares.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-comment-and-declare-strict-types-off-and-multiple-declares.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-comment-and-declare-strict-types-off.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-comment-and-declare-strict-types-off.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-comment-and-declare-strict-types-off.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-comment-and-declare-strict-types-off.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-comment-and-declare-strict-types-on-and-invalid-casing.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-comment-and-declare-strict-types-on-and-invalid-casing.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-comment-and-declare-strict-types-on-and-invalid-casing.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-comment-and-declare-strict-types-on-and-invalid-casing.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-comment-and-declare-strict-types-on-and-multiple-declares.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-comment-and-declare-strict-types-on-and-multiple-declares.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-comment-and-declare-strict-types-on-and-multiple-declares.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-comment-and-declare-strict-types-on-and-multiple-declares.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-comment-and-declare-strict-types-on-and-namespace-declaration.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-comment-and-declare-strict-types-on-and-namespace-declaration.php
similarity index 84%
rename from test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-comment-and-declare-strict-types-on-and-namespace-declaration.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-comment-and-declare-strict-types-on-and-namespace-declaration.php
index 9b99a34c..28915eb2 100644
--- a/test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-comment-and-declare-strict-types-on-and-namespace-declaration.php
+++ b/test/Fixture/Files/DeclareStrictTypesRule/file-with-comment-and-declare-strict-types-on-and-namespace-declaration.php
@@ -4,6 +4,6 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\DeclareStrictTypesRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\DeclareStrictTypesRule;
 
 echo 'Hello!';
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-comment-and-declare-strict-types-on.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-comment-and-declare-strict-types-on.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-comment-and-declare-strict-types-on.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-comment-and-declare-strict-types-on.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-declare-strict-types-off-and-invalid-casing.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-declare-strict-types-off-and-invalid-casing.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-declare-strict-types-off-and-invalid-casing.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-declare-strict-types-off-and-invalid-casing.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-declare-strict-types-off-and-multiple-declares.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-declare-strict-types-off-and-multiple-declares.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-declare-strict-types-off-and-multiple-declares.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-declare-strict-types-off-and-multiple-declares.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-declare-strict-types-off.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-declare-strict-types-off.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-declare-strict-types-off.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-declare-strict-types-off.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-declare-strict-types-on-and-invalid-casing.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-declare-strict-types-on-and-invalid-casing.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-declare-strict-types-on-and-invalid-casing.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-declare-strict-types-on-and-invalid-casing.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-declare-strict-types-on-and-multiple-declares.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-declare-strict-types-on-and-multiple-declares.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-declare-strict-types-on-and-multiple-declares.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-declare-strict-types-on-and-multiple-declares.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-declare-strict-types-on-and-namespace-declaration.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-declare-strict-types-on-and-namespace-declaration.php
similarity index 83%
rename from test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-declare-strict-types-on-and-namespace-declaration.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-declare-strict-types-on-and-namespace-declaration.php
index fd706ca2..d16939ec 100644
--- a/test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-declare-strict-types-on-and-namespace-declaration.php
+++ b/test/Fixture/Files/DeclareStrictTypesRule/file-with-declare-strict-types-on-and-namespace-declaration.php
@@ -2,6 +2,6 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\DeclareStrictTypesRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\DeclareStrictTypesRule;
 
 echo 'Hello!';
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-declare-strict-types-on.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-declare-strict-types-on.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-declare-strict-types-on.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-declare-strict-types-on.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-declare-ticks.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-declare-ticks.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-declare-ticks.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-declare-ticks.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-doc-block-and-declare-strict-types-off-and-invalid-casing.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-doc-block-and-declare-strict-types-off-and-invalid-casing.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-doc-block-and-declare-strict-types-off-and-invalid-casing.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-doc-block-and-declare-strict-types-off-and-invalid-casing.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-doc-block-and-declare-strict-types-off-and-multiple-declares.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-doc-block-and-declare-strict-types-off-and-multiple-declares.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-doc-block-and-declare-strict-types-off-and-multiple-declares.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-doc-block-and-declare-strict-types-off-and-multiple-declares.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-doc-block-and-declare-strict-types-off.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-doc-block-and-declare-strict-types-off.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-doc-block-and-declare-strict-types-off.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-doc-block-and-declare-strict-types-off.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-doc-block-and-declare-strict-types-on-and-invalid-casing.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-doc-block-and-declare-strict-types-on-and-invalid-casing.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-doc-block-and-declare-strict-types-on-and-invalid-casing.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-doc-block-and-declare-strict-types-on-and-invalid-casing.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-doc-block-and-declare-strict-types-on-and-multiple-declares.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-doc-block-and-declare-strict-types-on-and-multiple-declares.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-doc-block-and-declare-strict-types-on-and-multiple-declares.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-doc-block-and-declare-strict-types-on-and-multiple-declares.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-doc-block-and-declare-strict-types-on-and-namespace-declaration.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-doc-block-and-declare-strict-types-on-and-namespace-declaration.php
similarity index 85%
rename from test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-doc-block-and-declare-strict-types-on-and-namespace-declaration.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-doc-block-and-declare-strict-types-on-and-namespace-declaration.php
index f8e2440b..b28475fa 100644
--- a/test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-doc-block-and-declare-strict-types-on-and-namespace-declaration.php
+++ b/test/Fixture/Files/DeclareStrictTypesRule/file-with-doc-block-and-declare-strict-types-on-and-namespace-declaration.php
@@ -6,6 +6,6 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\DeclareStrictTypesRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\DeclareStrictTypesRule;
 
 echo 'Hello!';
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-doc-block-and-declare-strict-types-on.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-doc-block-and-declare-strict-types-on.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-doc-block-and-declare-strict-types-on.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-doc-block-and-declare-strict-types-on.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-shebang-and-another-one-text-line-before-opening-tag.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-shebang-and-another-one-text-line-before-opening-tag.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-shebang-and-another-one-text-line-before-opening-tag.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-shebang-and-another-one-text-line-before-opening-tag.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-shebang-and-declare-strict-types-off.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-shebang-and-declare-strict-types-off.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-shebang-and-declare-strict-types-off.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-shebang-and-declare-strict-types-off.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-shebang-and-declare-strict-types-on.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-shebang-and-declare-strict-types-on.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Success/file-with-shebang-and-declare-strict-types-on.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-shebang-and-declare-strict-types-on.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-text-before-opening-tag.php b/test/Fixture/Files/DeclareStrictTypesRule/file-with-text-before-opening-tag.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Failure/file-with-text-before-opening-tag.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-with-text-before-opening-tag.php
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Failure/file-without-declare-strict-types-and-namespace-declaration.php b/test/Fixture/Files/DeclareStrictTypesRule/file-without-declare-strict-types-and-namespace-declaration.php
similarity index 79%
rename from test/Fixture/Files/DeclareStrictTypesRule/Failure/file-without-declare-strict-types-and-namespace-declaration.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-without-declare-strict-types-and-namespace-declaration.php
index 01946303..8922225b 100644
--- a/test/Fixture/Files/DeclareStrictTypesRule/Failure/file-without-declare-strict-types-and-namespace-declaration.php
+++ b/test/Fixture/Files/DeclareStrictTypesRule/file-without-declare-strict-types-and-namespace-declaration.php
@@ -1,5 +1,5 @@
 <?php
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\DeclareStrictTypesRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Classes\DeclareStrictTypesRule;
 
 echo 'Hello!';
diff --git a/test/Fixture/Files/DeclareStrictTypesRule/Failure/file-without-declare-strict-types.php b/test/Fixture/Files/DeclareStrictTypesRule/file-without-declare-strict-types.php
similarity index 100%
rename from test/Fixture/Files/DeclareStrictTypesRule/Failure/file-without-declare-strict-types.php
rename to test/Fixture/Files/DeclareStrictTypesRule/file-without-declare-strict-types.php
diff --git a/test/Fixture/Functions/NoNullableReturnTypeDeclarationRule/Failure/function-with-nullable-return-type-declaration.php b/test/Fixture/Functions/NoNullableReturnTypeDeclarationRule/Failure/function-with-nullable-return-type-declaration.php
deleted file mode 100644
index 3e71dea9..00000000
--- a/test/Fixture/Functions/NoNullableReturnTypeDeclarationRule/Failure/function-with-nullable-return-type-declaration.php
+++ /dev/null
@@ -1,10 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoNullableReturnTypeDeclarationRule\Failure;
-
-function foo(): ?string
-{
-    return 'Hello';
-}
diff --git a/test/Fixture/Functions/NoNullableReturnTypeDeclarationRule/Failure/function-with-nullable-union-return-type-declaration.php b/test/Fixture/Functions/NoNullableReturnTypeDeclarationRule/Failure/function-with-nullable-union-return-type-declaration.php
deleted file mode 100644
index f6e4c4ae..00000000
--- a/test/Fixture/Functions/NoNullableReturnTypeDeclarationRule/Failure/function-with-nullable-union-return-type-declaration.php
+++ /dev/null
@@ -1,10 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoNullableReturnTypeDeclarationRule\Failure;
-
-function foo(): null|string
-{
-    return 'Hello';
-}
diff --git a/test/Fixture/Functions/NoNullableReturnTypeDeclarationRule/Success/function-with-return-type-declaration.php b/test/Fixture/Functions/NoNullableReturnTypeDeclarationRule/Success/function-with-return-type-declaration.php
deleted file mode 100644
index 9ec45d2e..00000000
--- a/test/Fixture/Functions/NoNullableReturnTypeDeclarationRule/Success/function-with-return-type-declaration.php
+++ /dev/null
@@ -1,10 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoNullableReturnTypeDeclarationRule\Success;
-
-function foo(): string
-{
-    return 'Hello';
-}
diff --git a/test/Fixture/Functions/NoNullableReturnTypeDeclarationRule/Success/function-without-return-type-declaration.php b/test/Fixture/Functions/NoNullableReturnTypeDeclarationRule/Success/function-without-return-type-declaration.php
deleted file mode 100644
index 7bb92e54..00000000
--- a/test/Fixture/Functions/NoNullableReturnTypeDeclarationRule/Success/function-without-return-type-declaration.php
+++ /dev/null
@@ -1,10 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoNullableReturnTypeDeclarationRule\Success;
-
-function foo()
-{
-    return 'Hello';
-}
diff --git a/test/Fixture/Functions/NoNullableReturnTypeDeclarationRule/script.php b/test/Fixture/Functions/NoNullableReturnTypeDeclarationRule/script.php
new file mode 100644
index 00000000..c0220b1d
--- /dev/null
+++ b/test/Fixture/Functions/NoNullableReturnTypeDeclarationRule/script.php
@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoNullableReturnTypeDeclarationRule;
+
+function foo()
+{
+    return 'Hello';
+}
+
+function bar(): string
+{
+    return 'Hello';
+}
+
+function baz(): ?string
+{
+    return 'Hello';
+}
+
+function quux(): null|string
+{
+    return 'Hello';
+}
diff --git a/test/Fixture/Functions/NoParameterWithNullDefaultValueRule/Failure/function-with-parameter-with-null-default-value.php b/test/Fixture/Functions/NoParameterWithNullDefaultValueRule/Failure/function-with-parameter-with-null-default-value.php
deleted file mode 100644
index 282d03e6..00000000
--- a/test/Fixture/Functions/NoParameterWithNullDefaultValueRule/Failure/function-with-parameter-with-null-default-value.php
+++ /dev/null
@@ -1,10 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullDefaultValueRule\Failure;
-
-function foo($bar = null)
-{
-    return $bar;
-}
diff --git a/test/Fixture/Functions/NoParameterWithNullDefaultValueRule/Failure/function-with-parameter-with-root-namespace-referenced-null-default-value.php b/test/Fixture/Functions/NoParameterWithNullDefaultValueRule/Failure/function-with-parameter-with-root-namespace-referenced-null-default-value.php
deleted file mode 100644
index b5f10ead..00000000
--- a/test/Fixture/Functions/NoParameterWithNullDefaultValueRule/Failure/function-with-parameter-with-root-namespace-referenced-null-default-value.php
+++ /dev/null
@@ -1,10 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullDefaultValueRule\Failure;
-
-function foo($bar = \null)
-{
-    return $bar;
-}
diff --git a/test/Fixture/Functions/NoParameterWithNullDefaultValueRule/Failure/function-with-parameter-with-wrongly-capitalized-null-default-value.php b/test/Fixture/Functions/NoParameterWithNullDefaultValueRule/Failure/function-with-parameter-with-wrongly-capitalized-null-default-value.php
deleted file mode 100644
index 3954995d..00000000
--- a/test/Fixture/Functions/NoParameterWithNullDefaultValueRule/Failure/function-with-parameter-with-wrongly-capitalized-null-default-value.php
+++ /dev/null
@@ -1,10 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullDefaultValueRule\Failure;
-
-function foo($bar = nUlL)
-{
-    return $bar;
-}
diff --git a/test/Fixture/Functions/NoParameterWithNullDefaultValueRule/Success/function-with-parameter-with-non-null-default-value.php b/test/Fixture/Functions/NoParameterWithNullDefaultValueRule/Success/function-with-parameter-with-non-null-default-value.php
deleted file mode 100644
index 24f35fd2..00000000
--- a/test/Fixture/Functions/NoParameterWithNullDefaultValueRule/Success/function-with-parameter-with-non-null-default-value.php
+++ /dev/null
@@ -1,10 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullDefaultValueRule\Success;
-
-function foo($bar = true)
-{
-    return $bar;
-}
diff --git a/test/Fixture/Functions/NoParameterWithNullDefaultValueRule/Success/function-with-parameter-without-default-value.php b/test/Fixture/Functions/NoParameterWithNullDefaultValueRule/Success/function-with-parameter-without-default-value.php
deleted file mode 100644
index fc0974ae..00000000
--- a/test/Fixture/Functions/NoParameterWithNullDefaultValueRule/Success/function-with-parameter-without-default-value.php
+++ /dev/null
@@ -1,10 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullDefaultValueRule\Success;
-
-function foo($bar)
-{
-    return $bar;
-}
diff --git a/test/Fixture/Functions/NoParameterWithNullDefaultValueRule/Success/function-without-parameters.php b/test/Fixture/Functions/NoParameterWithNullDefaultValueRule/Success/function-without-parameters.php
deleted file mode 100644
index 31805d42..00000000
--- a/test/Fixture/Functions/NoParameterWithNullDefaultValueRule/Success/function-without-parameters.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullDefaultValueRule\Success;
-
-function foo(): void
-{
-}
diff --git a/test/Fixture/Functions/NoParameterWithNullDefaultValueRule/script.php b/test/Fixture/Functions/NoParameterWithNullDefaultValueRule/script.php
new file mode 100644
index 00000000..edbcb987
--- /dev/null
+++ b/test/Fixture/Functions/NoParameterWithNullDefaultValueRule/script.php
@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullDefaultValueRule;
+
+function foo(): void
+{
+}
+
+function bar($bar)
+{
+    return $bar;
+}
+
+function baz($bar = true)
+{
+    return $bar;
+}
+
+function qux($bar = null)
+{
+    return $bar;
+}
+
+function quux($bar = \null)
+{
+    return $bar;
+}
+
+function quz($bar = nUlL)
+{
+    return $bar;
+}
diff --git a/test/Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/Failure/function-with-parameter-with-nullable-type-declaration.php b/test/Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/Failure/function-with-parameter-with-nullable-type-declaration.php
deleted file mode 100644
index d7f5dff5..00000000
--- a/test/Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/Failure/function-with-parameter-with-nullable-type-declaration.php
+++ /dev/null
@@ -1,10 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullableTypeDeclarationRule\Failure;
-
-function foo(?string $bar)
-{
-    return $bar;
-}
diff --git a/test/Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/Failure/function-with-parameter-with-nullable-union-type-declaration.php b/test/Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/Failure/function-with-parameter-with-nullable-union-type-declaration.php
deleted file mode 100644
index 45905dcb..00000000
--- a/test/Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/Failure/function-with-parameter-with-nullable-union-type-declaration.php
+++ /dev/null
@@ -1,10 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullableTypeDeclarationRule\Failure;
-
-function foo(null|string $bar)
-{
-    return $bar;
-}
diff --git a/test/Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/Success/function-with-parameter-with-type-declaration.php b/test/Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/Success/function-with-parameter-with-type-declaration.php
deleted file mode 100644
index 81b720a8..00000000
--- a/test/Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/Success/function-with-parameter-with-type-declaration.php
+++ /dev/null
@@ -1,10 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullableTypeDeclarationRule\Success;
-
-function foo(string $bar)
-{
-    return $bar;
-}
diff --git a/test/Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/Success/function-with-parameter-without-type-declaration.php b/test/Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/Success/function-with-parameter-without-type-declaration.php
deleted file mode 100644
index e7ef6e55..00000000
--- a/test/Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/Success/function-with-parameter-without-type-declaration.php
+++ /dev/null
@@ -1,10 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullableTypeDeclarationRule\Success;
-
-function foo($bar)
-{
-    return $bar;
-}
diff --git a/test/Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/Success/function-without-parameters.php b/test/Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/Success/function-without-parameters.php
deleted file mode 100644
index 072d451a..00000000
--- a/test/Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/Success/function-without-parameters.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullableTypeDeclarationRule\Success;
-
-function foo(): void
-{
-}
diff --git a/test/Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/script.php b/test/Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/script.php
new file mode 100644
index 00000000..725ed70f
--- /dev/null
+++ b/test/Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/script.php
@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullableTypeDeclarationRule;
+
+function foo()
+{
+}
+
+function bar($bar)
+{
+    return $bar;
+}
+
+function baz(string $bar)
+{
+    return $bar;
+}
+
+function qux(?string $bar)
+{
+    return $bar;
+}
+
+function quux(null|string $bar)
+{
+    return $bar;
+}
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithAbstractMethod.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithAbstractMethod.php
similarity index 88%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithAbstractMethod.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithAbstractMethod.php
index 20dbbc82..413ce4cf 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithAbstractMethod.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithAbstractMethod.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 abstract class AbstractClassWithAbstractMethod
 {
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithFinalProtectedMethod.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithFinalProtectedMethod.php
similarity index 89%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithFinalProtectedMethod.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithFinalProtectedMethod.php
index e01bb414..d04671da 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithFinalProtectedMethod.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithFinalProtectedMethod.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 abstract class AbstractClassWithFinalProtectedMethod
 {
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithFinalPublicMethod.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithFinalPublicMethod.php
similarity index 89%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithFinalPublicMethod.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithFinalPublicMethod.php
index 2f4b69f0..6d684ac0 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithFinalPublicMethod.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithFinalPublicMethod.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 abstract class AbstractClassWithFinalPublicMethod
 {
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithNonFinalConstructor.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithNonFinalConstructor.php
similarity index 89%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithNonFinalConstructor.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithNonFinalConstructor.php
index 59e42e2c..857287a4 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithNonFinalConstructor.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithNonFinalConstructor.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 abstract class AbstractClassWithNonFinalConstructor
 {
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPrivateMethod.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPrivateMethod.php
similarity index 89%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPrivateMethod.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPrivateMethod.php
index 0f3b3c7b..0f6064c1 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPrivateMethod.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPrivateMethod.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 abstract class AbstractClassWithPrivateMethod
 {
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Failure/AbstractClassWithProtectedMethod.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethod.php
similarity index 89%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Failure/AbstractClassWithProtectedMethod.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethod.php
index d9a4e0c9..7bb27182 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Failure/AbstractClassWithProtectedMethod.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethod.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 abstract class AbstractClassWithProtectedMethod
 {
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEmbeddableAnnotationInInlineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndEmbeddableAnnotationInInlineDocBlock.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEmbeddableAnnotationInInlineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndEmbeddableAnnotationInInlineDocBlock.php
index ceb7dae7..2a91dd8a 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEmbeddableAnnotationInInlineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndEmbeddableAnnotationInInlineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /** @Embeddable */
 abstract class AbstractClassWithProtectedMethodAndEmbeddableAnnotationInInlineDocBlock
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEmbeddableAnnotationInMultilineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndEmbeddableAnnotationInMultilineDocBlock.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEmbeddableAnnotationInMultilineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndEmbeddableAnnotationInMultilineDocBlock.php
index b15641ca..75212d5e 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEmbeddableAnnotationInMultilineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndEmbeddableAnnotationInMultilineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /**
  * @Embeddable
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEmbeddableAttribute.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndEmbeddableAttribute.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEmbeddableAttribute.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndEmbeddableAttribute.php
index f8c9aa9c..ce14ed0c 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEmbeddableAttribute.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndEmbeddableAttribute.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 use Doctrine\ORM;
 
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEntityAnnotationInInlineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndEntityAnnotationInInlineDocBlock.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEntityAnnotationInInlineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndEntityAnnotationInInlineDocBlock.php
index bbac11a5..1d3c68e9 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEntityAnnotationInInlineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndEntityAnnotationInInlineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /** @Entity */
 abstract class AbstractClassWithProtectedMethodAndEntityAnnotationInInlineDocBlock
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEntityAnnotationInMultilineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndEntityAnnotationInMultilineDocBlock.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEntityAnnotationInMultilineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndEntityAnnotationInMultilineDocBlock.php
index 9fbeb13f..163adb04 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEntityAnnotationInMultilineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndEntityAnnotationInMultilineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /**
  * @Entity
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEntityAttribute.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndEntityAttribute.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEntityAttribute.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndEntityAttribute.php
index d017120c..6bd06c68 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEntityAttribute.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndEntityAttribute.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 use Doctrine\ORM;
 
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmEmbeddableAnnotationInInlineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmEmbeddableAnnotationInInlineDocBlock.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmEmbeddableAnnotationInInlineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmEmbeddableAnnotationInInlineDocBlock.php
index 22c5d63f..441304f3 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmEmbeddableAnnotationInInlineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmEmbeddableAnnotationInInlineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /** @ORM\Embeddable */
 abstract class AbstractClassWithProtectedMethodAndOrmEmbeddableAnnotationInInlineDocBlock
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmEmbeddableAnnotationInMultilineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmEmbeddableAnnotationInMultilineDocBlock.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmEmbeddableAnnotationInMultilineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmEmbeddableAnnotationInMultilineDocBlock.php
index 8c602272..addcf027 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmEmbeddableAnnotationInMultilineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmEmbeddableAnnotationInMultilineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /**
  * @ORM\Embeddable
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmEntityAnnotationInInlineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmEntityAnnotationInInlineDocBlock.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmEntityAnnotationInInlineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmEntityAnnotationInInlineDocBlock.php
index 433bad80..08c84eea 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmEntityAnnotationInInlineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmEntityAnnotationInInlineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /** @ORM\Entity */
 abstract class AbstractClassWithProtectedMethodAndOrmEntityAnnotationInInlineDocBlock
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmEntityAnnotationInMultilineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmEntityAnnotationInMultilineDocBlock.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmEntityAnnotationInMultilineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmEntityAnnotationInMultilineDocBlock.php
index a889d41c..5a466996 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmEntityAnnotationInMultilineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmEntityAnnotationInMultilineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /**
  * @ORM\Entity
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmMappingEmbeddableAnnotationInInlineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmMappingEmbeddableAnnotationInInlineDocBlock.php
similarity index 92%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmMappingEmbeddableAnnotationInInlineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmMappingEmbeddableAnnotationInInlineDocBlock.php
index 6bf88481..3d8a19f8 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmMappingEmbeddableAnnotationInInlineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmMappingEmbeddableAnnotationInInlineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /** @ORM\Mapping\Embeddable */
 abstract class AbstractClassWithProtectedMethodAndOrmMappingEmbeddableAnnotationInInlineDocBlock
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmMappingEmbeddableAnnotationInMultilineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmMappingEmbeddableAnnotationInMultilineDocBlock.php
similarity index 92%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmMappingEmbeddableAnnotationInMultilineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmMappingEmbeddableAnnotationInMultilineDocBlock.php
index 5dda343d..99ff1be0 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmMappingEmbeddableAnnotationInMultilineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmMappingEmbeddableAnnotationInMultilineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /**
  * @ORM\Mapping\Embeddable
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmMappingEntityAnnotationInInlineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmMappingEntityAnnotationInInlineDocBlock.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmMappingEntityAnnotationInInlineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmMappingEntityAnnotationInInlineDocBlock.php
index 4cf40ca0..4d2899a4 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmMappingEntityAnnotationInInlineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmMappingEntityAnnotationInInlineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /** @ORM\Mapping\Entity */
 abstract class AbstractClassWithProtectedMethodAndOrmMappingEntityAnnotationInInlineDocBlock
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmMappingEntityAnnotationInMultilineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmMappingEntityAnnotationInMultilineDocBlock.php
similarity index 92%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmMappingEntityAnnotationInMultilineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmMappingEntityAnnotationInMultilineDocBlock.php
index 20515a3d..b2b9d191 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmMappingEntityAnnotationInMultilineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithProtectedMethodAndOrmMappingEntityAnnotationInMultilineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /**
  * @ORM\Mapping\Entity
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Failure/AbstractClassWithPublicMethod.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethod.php
similarity index 88%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Failure/AbstractClassWithPublicMethod.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethod.php
index a7ec23e3..55eda377 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Failure/AbstractClassWithPublicMethod.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethod.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 abstract class AbstractClassWithPublicMethod
 {
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEmbeddableAnnotationInInlineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndEmbeddableAnnotationInInlineDocBlock.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEmbeddableAnnotationInInlineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndEmbeddableAnnotationInInlineDocBlock.php
index 7856dedb..30351cfe 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEmbeddableAnnotationInInlineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndEmbeddableAnnotationInInlineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /** @Embeddable */
 abstract class AbstractClassWithPublicMethodAndEmbeddableAnnotationInInlineDocBlock
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEmbeddableAnnotationInMultilineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndEmbeddableAnnotationInMultilineDocBlock.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEmbeddableAnnotationInMultilineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndEmbeddableAnnotationInMultilineDocBlock.php
index 377a1029..5e8740e9 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEmbeddableAnnotationInMultilineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndEmbeddableAnnotationInMultilineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /**
  * @Embeddable
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEmbeddableAttribute.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndEmbeddableAttribute.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEmbeddableAttribute.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndEmbeddableAttribute.php
index c64d6e87..5bf42b7a 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEmbeddableAttribute.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndEmbeddableAttribute.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 use Doctrine\ORM;
 
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEntityAnnotationInInlineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndEntityAnnotationInInlineDocBlock.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEntityAnnotationInInlineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndEntityAnnotationInInlineDocBlock.php
index aac7ba29..41e2d2ad 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEntityAnnotationInInlineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndEntityAnnotationInInlineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /** @Entity */
 abstract class AbstractClassWithPublicMethodAndEntityAnnotationInInlineDocBlock
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEntityAnnotationInMultilineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndEntityAnnotationInMultilineDocBlock.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEntityAnnotationInMultilineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndEntityAnnotationInMultilineDocBlock.php
index fec3f1a7..b6ac1476 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEntityAnnotationInMultilineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndEntityAnnotationInMultilineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /**
  * @Entity
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEntityAttribute.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndEntityAttribute.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEntityAttribute.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndEntityAttribute.php
index 552cc64a..18b0d628 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEntityAttribute.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndEntityAttribute.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 use Doctrine\ORM;
 
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmEmbeddableAnnotationInInlineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmEmbeddableAnnotationInInlineDocBlock.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmEmbeddableAnnotationInInlineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmEmbeddableAnnotationInInlineDocBlock.php
index 034b5688..9c956d60 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmEmbeddableAnnotationInInlineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmEmbeddableAnnotationInInlineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /** @ORM\Embeddable */
 abstract class AbstractClassWithPublicMethodAndOrmEmbeddableAnnotationInInlineDocBlock
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmEmbeddableAnnotationInMultilineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmEmbeddableAnnotationInMultilineDocBlock.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmEmbeddableAnnotationInMultilineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmEmbeddableAnnotationInMultilineDocBlock.php
index ab114ab2..ba6d3303 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmEmbeddableAnnotationInMultilineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmEmbeddableAnnotationInMultilineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /**
  * @ORM\Embeddable
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmEntityAnnotationInInlineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmEntityAnnotationInInlineDocBlock.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmEntityAnnotationInInlineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmEntityAnnotationInInlineDocBlock.php
index 0146ee8f..5b2047df 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmEntityAnnotationInInlineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmEntityAnnotationInInlineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /** @ORM\Entity */
 abstract class AbstractClassWithPublicMethodAndOrmEntityAnnotationInInlineDocBlock
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmEntityAnnotationInMultilineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmEntityAnnotationInMultilineDocBlock.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmEntityAnnotationInMultilineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmEntityAnnotationInMultilineDocBlock.php
index 51c8a62c..539370ce 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmEntityAnnotationInMultilineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmEntityAnnotationInMultilineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /**
  * @ORM\Entity
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmMappingEmbeddableAnnotationInInlineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmMappingEmbeddableAnnotationInInlineDocBlock.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmMappingEmbeddableAnnotationInInlineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmMappingEmbeddableAnnotationInInlineDocBlock.php
index 71805a2f..90894ef0 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmMappingEmbeddableAnnotationInInlineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmMappingEmbeddableAnnotationInInlineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /** @ORM\Mapping\Embeddable */
 abstract class AbstractClassWithPublicMethodAndOrmMappingEmbeddableAnnotationInInlineDocBlock
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmMappingEmbeddableAnnotationInMultilineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmMappingEmbeddableAnnotationInMultilineDocBlock.php
similarity index 92%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmMappingEmbeddableAnnotationInMultilineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmMappingEmbeddableAnnotationInMultilineDocBlock.php
index 5bac8df0..4d9792db 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmMappingEmbeddableAnnotationInMultilineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmMappingEmbeddableAnnotationInMultilineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /**
  * @ORM\Mapping\Embeddable
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmMappingEntityAnnotationInInlineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmMappingEntityAnnotationInInlineDocBlock.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmMappingEntityAnnotationInInlineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmMappingEntityAnnotationInInlineDocBlock.php
index a769766d..ac24afb7 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmMappingEntityAnnotationInInlineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmMappingEntityAnnotationInInlineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /** @ORM\Mapping\Entity */
 abstract class AbstractClassWithPublicMethodAndOrmMappingEntityAnnotationInInlineDocBlock
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmMappingEntityAnnotationInMultilineDocBlock.php b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmMappingEntityAnnotationInMultilineDocBlock.php
similarity index 91%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmMappingEntityAnnotationInMultilineDocBlock.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmMappingEntityAnnotationInMultilineDocBlock.php
index 52bad6ed..e7af37d5 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmMappingEntityAnnotationInMultilineDocBlock.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/AbstractClassWithPublicMethodAndOrmMappingEntityAnnotationInMultilineDocBlock.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 /**
  * @ORM\Mapping\Entity
diff --git a/test/Fixture/Methods/FinalInAbstractClassRule/Success/InterfaceWithPublicMethod.php b/test/Fixture/Methods/FinalInAbstractClassRule/InterfaceWithPublicMethod.php
similarity index 87%
rename from test/Fixture/Methods/FinalInAbstractClassRule/Success/InterfaceWithPublicMethod.php
rename to test/Fixture/Methods/FinalInAbstractClassRule/InterfaceWithPublicMethod.php
index ca0b9e25..8549d1ee 100644
--- a/test/Fixture/Methods/FinalInAbstractClassRule/Success/InterfaceWithPublicMethod.php
+++ b/test/Fixture/Methods/FinalInAbstractClassRule/InterfaceWithPublicMethod.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\FinalInAbstractClassRule;
 
 interface InterfaceWithPublicMethod
 {
diff --git a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Failure/ConstructorInClassWithParameterWithDefaultValue.php b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/ConstructorInClassWithParameterWithDefaultValue.php
similarity index 83%
rename from test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Failure/ConstructorInClassWithParameterWithDefaultValue.php
rename to test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/ConstructorInClassWithParameterWithDefaultValue.php
index 72ea8811..e6ca0f12 100644
--- a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Failure/ConstructorInClassWithParameterWithDefaultValue.php
+++ b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/ConstructorInClassWithParameterWithDefaultValue.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule;
 
 final class ConstructorInClassWithParameterWithDefaultValue
 {
diff --git a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/ConstructorInClassWithParameterWithoutDefaultValue.php b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/ConstructorInClassWithParameterWithoutDefaultValue.php
similarity index 83%
rename from test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/ConstructorInClassWithParameterWithoutDefaultValue.php
rename to test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/ConstructorInClassWithParameterWithoutDefaultValue.php
index 021ecf38..98c22a6c 100644
--- a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/ConstructorInClassWithParameterWithoutDefaultValue.php
+++ b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/ConstructorInClassWithParameterWithoutDefaultValue.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule;
 
 final class ConstructorInClassWithParameterWithoutDefaultValue
 {
diff --git a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/ConstructorInClassWithoutParameters.php b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/ConstructorInClassWithoutParameters.php
similarity index 82%
rename from test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/ConstructorInClassWithoutParameters.php
rename to test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/ConstructorInClassWithoutParameters.php
index 78f87fc3..7bb534dc 100644
--- a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/ConstructorInClassWithoutParameters.php
+++ b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/ConstructorInClassWithoutParameters.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule;
 
 final class ConstructorInClassWithoutParameters
 {
diff --git a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/ConstructorInTraitWithParameterWithDefaultValue.php b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/ConstructorInTraitWithParameterWithDefaultValue.php
similarity index 83%
rename from test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/ConstructorInTraitWithParameterWithDefaultValue.php
rename to test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/ConstructorInTraitWithParameterWithDefaultValue.php
index 797e38ee..53fcdf48 100644
--- a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/ConstructorInTraitWithParameterWithDefaultValue.php
+++ b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/ConstructorInTraitWithParameterWithDefaultValue.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule;
 
 trait ConstructorInTraitWithParameterWithDefaultValue
 {
diff --git a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/ConstructorInTraitWithParameterWithoutDefaultValue.php b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/ConstructorInTraitWithParameterWithoutDefaultValue.php
similarity index 83%
rename from test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/ConstructorInTraitWithParameterWithoutDefaultValue.php
rename to test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/ConstructorInTraitWithParameterWithoutDefaultValue.php
index e77c2bd7..ca00acb8 100644
--- a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/ConstructorInTraitWithParameterWithoutDefaultValue.php
+++ b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/ConstructorInTraitWithParameterWithoutDefaultValue.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule;
 
 trait ConstructorInTraitWithParameterWithoutDefaultValue
 {
diff --git a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/ConstructorInTraitWithoutParameters.php b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/ConstructorInTraitWithoutParameters.php
similarity index 81%
rename from test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/ConstructorInTraitWithoutParameters.php
rename to test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/ConstructorInTraitWithoutParameters.php
index 0e71eecd..dd38a8c2 100644
--- a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/ConstructorInTraitWithoutParameters.php
+++ b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/ConstructorInTraitWithoutParameters.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule;
 
 trait ConstructorInTraitWithoutParameters
 {
diff --git a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Failure/ConstructorWithWrongCapitalizationInClassWithParameterWithDefaultValue.php b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/ConstructorWithWrongCapitalizationInClassWithParameterWithDefaultValue.php
similarity index 85%
rename from test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Failure/ConstructorWithWrongCapitalizationInClassWithParameterWithDefaultValue.php
rename to test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/ConstructorWithWrongCapitalizationInClassWithParameterWithDefaultValue.php
index 22ed8fac..724efe08 100644
--- a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Failure/ConstructorWithWrongCapitalizationInClassWithParameterWithDefaultValue.php
+++ b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/ConstructorWithWrongCapitalizationInClassWithParameterWithDefaultValue.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule;
 
 final class ConstructorWithWrongCapitalizationInClassWithParameterWithDefaultValue
 {
diff --git a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Failure/constructor-in-anonymous-class-with-parameter-with-default-value.php b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Failure/constructor-in-anonymous-class-with-parameter-with-default-value.php
deleted file mode 100644
index 228a3ce5..00000000
--- a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Failure/constructor-in-anonymous-class-with-parameter-with-default-value.php
+++ /dev/null
@@ -1,11 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule\Success;
-
-new class() {
-    public function __construct($bar = 9000)
-    {
-    }
-};
diff --git a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Failure/constructor-with-wrong-capitalization-in-anonymous-class-with-parameter-with-default-value.php b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Failure/constructor-with-wrong-capitalization-in-anonymous-class-with-parameter-with-default-value.php
deleted file mode 100644
index 2e062aae..00000000
--- a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Failure/constructor-with-wrong-capitalization-in-anonymous-class-with-parameter-with-default-value.php
+++ /dev/null
@@ -1,11 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule\Success;
-
-new class() {
-    public function __CoNsTrUcT($bar = 9000)
-    {
-    }
-};
diff --git a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/MethodInClassWithParameterWithDefaultValue.php b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/MethodInClassWithParameterWithDefaultValue.php
similarity index 83%
rename from test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/MethodInClassWithParameterWithDefaultValue.php
rename to test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/MethodInClassWithParameterWithDefaultValue.php
index 3debc816..474f8eaf 100644
--- a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/MethodInClassWithParameterWithDefaultValue.php
+++ b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/MethodInClassWithParameterWithDefaultValue.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule;
 
 final class MethodInClassWithParameterWithDefaultValue
 {
diff --git a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/MethodInTraitWithParameterWithDefaultValue.php b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/MethodInTraitWithParameterWithDefaultValue.php
similarity index 83%
rename from test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/MethodInTraitWithParameterWithDefaultValue.php
rename to test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/MethodInTraitWithParameterWithDefaultValue.php
index 72f86054..b835470e 100644
--- a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/MethodInTraitWithParameterWithDefaultValue.php
+++ b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/MethodInTraitWithParameterWithDefaultValue.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule;
 
 trait MethodInTraitWithParameterWithDefaultValue
 {
diff --git a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/constructor-in-anonymous-class-with-parameter-without-default-value.php b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/constructor-in-anonymous-class-with-parameter-without-default-value.php
deleted file mode 100644
index 24ce7d0a..00000000
--- a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/constructor-in-anonymous-class-with-parameter-without-default-value.php
+++ /dev/null
@@ -1,11 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule\Success;
-
-new class() {
-    public function __construct($bar)
-    {
-    }
-};
diff --git a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/constructor-in-anonymous-class-without-parameters.php b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/constructor-in-anonymous-class-without-parameters.php
deleted file mode 100644
index 341068b8..00000000
--- a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/constructor-in-anonymous-class-without-parameters.php
+++ /dev/null
@@ -1,11 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule\Success;
-
-new class() {
-    public function __construct()
-    {
-    }
-};
diff --git a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/method-in-anonymous-class-with-parameter-with-default-value.php b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/method-in-anonymous-class-with-parameter-with-default-value.php
deleted file mode 100644
index 9421b5ab..00000000
--- a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/method-in-anonymous-class-with-parameter-with-default-value.php
+++ /dev/null
@@ -1,11 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule\Success;
-
-new class() {
-    public function foo($bar = null): void
-    {
-    }
-};
diff --git a/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/script.php b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/script.php
new file mode 100644
index 00000000..3aa9583b
--- /dev/null
+++ b/test/Fixture/Methods/NoConstructorParameterWithDefaultValueRule/script.php
@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule;
+
+$foo = new class() {
+    public function foo($bar = null): void
+    {
+    }
+};
+
+$bar = new class() {
+    public function __construct()
+    {
+    }
+};
+
+$baz = new class() {
+    public function __construct($bar)
+    {
+    }
+};
+
+$qux = new class() {
+    public function __construct($bar = 9000)
+    {
+    }
+};
+
+$quux = new class() {
+    public function __CoNsTrUcT($bar = 9000)
+    {
+    }
+};
diff --git a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInAnonymousClassWithNullableReturnTypeDeclaration.php b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInAnonymousClassWithNullableReturnTypeDeclaration.php
deleted file mode 100644
index 927fd2e8..00000000
--- a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInAnonymousClassWithNullableReturnTypeDeclaration.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\Failure;
-
-final class MethodInAnonymousClassWithNullableReturnTypeDeclaration
-{
-    public function foo()
-    {
-        return new class() {
-            public function toString(): ?string
-            {
-                return 'Hello';
-            }
-        };
-    }
-}
diff --git a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInAnonymousClassWithNullableUnionReturnTypeDeclaration.php b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInAnonymousClassWithNullableUnionReturnTypeDeclaration.php
deleted file mode 100644
index 3faa9e7c..00000000
--- a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInAnonymousClassWithNullableUnionReturnTypeDeclaration.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\Failure;
-
-final class MethodInAnonymousClassWithNullableReturnTypeDeclaration
-{
-    public function foo()
-    {
-        return new class() {
-            public function toString(): null|string
-            {
-                return 'Hello';
-            }
-        };
-    }
-}
diff --git a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInClassWithNullableReturnTypeDeclaration.php b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInClassWithNullableReturnTypeDeclaration.php
similarity index 87%
rename from test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInClassWithNullableReturnTypeDeclaration.php
rename to test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInClassWithNullableReturnTypeDeclaration.php
index e0fdc4e5..f839ca3c 100644
--- a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInClassWithNullableReturnTypeDeclaration.php
+++ b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInClassWithNullableReturnTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule;
 
 final class MethodInClassWithNullableReturnTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInClassWithNullableUnionReturnTypeDeclaration.php b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInClassWithNullableUnionReturnTypeDeclaration.php
similarity index 87%
rename from test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInClassWithNullableUnionReturnTypeDeclaration.php
rename to test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInClassWithNullableUnionReturnTypeDeclaration.php
index 0159aa8a..c753e924 100644
--- a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInClassWithNullableUnionReturnTypeDeclaration.php
+++ b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInClassWithNullableUnionReturnTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule;
 
 final class MethodInClassWithNullableUnionReturnTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInClassWithReturnTypeDeclaration.php b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInClassWithReturnTypeDeclaration.php
similarity index 86%
rename from test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInClassWithReturnTypeDeclaration.php
rename to test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInClassWithReturnTypeDeclaration.php
index 17a8108c..f2dc0038 100644
--- a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInClassWithReturnTypeDeclaration.php
+++ b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInClassWithReturnTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule;
 
 final class MethodInClassWithReturnTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInClassWithoutReturnTypeDeclaration.php b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInClassWithoutReturnTypeDeclaration.php
similarity index 86%
rename from test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInClassWithoutReturnTypeDeclaration.php
rename to test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInClassWithoutReturnTypeDeclaration.php
index 1e281df3..11cab83c 100644
--- a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInClassWithoutReturnTypeDeclaration.php
+++ b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInClassWithoutReturnTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule;
 
 final class MethodInClassWithoutReturnTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInInterfaceWithNullableReturnTypeDeclaration.php b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInInterfaceWithNullableReturnTypeDeclaration.php
similarity index 85%
rename from test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInInterfaceWithNullableReturnTypeDeclaration.php
rename to test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInInterfaceWithNullableReturnTypeDeclaration.php
index 9296928e..712d56df 100644
--- a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInInterfaceWithNullableReturnTypeDeclaration.php
+++ b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInInterfaceWithNullableReturnTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule;
 
 interface MethodInInterfaceWithNullableReturnTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInInterfaceWithNullableUnionReturnTypeDeclaration.php b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInInterfaceWithNullableUnionReturnTypeDeclaration.php
similarity index 85%
rename from test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInInterfaceWithNullableUnionReturnTypeDeclaration.php
rename to test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInInterfaceWithNullableUnionReturnTypeDeclaration.php
index 45b3dd4a..6e2d313c 100644
--- a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInInterfaceWithNullableUnionReturnTypeDeclaration.php
+++ b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInInterfaceWithNullableUnionReturnTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule;
 
 interface MethodInInterfaceWithNullableUnionReturnTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInInterfaceWithReturnTypeDeclaration.php b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInInterfaceWithReturnTypeDeclaration.php
similarity index 84%
rename from test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInInterfaceWithReturnTypeDeclaration.php
rename to test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInInterfaceWithReturnTypeDeclaration.php
index 6f3963a9..95a5c614 100644
--- a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInInterfaceWithReturnTypeDeclaration.php
+++ b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInInterfaceWithReturnTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule;
 
 interface MethodInInterfaceWithReturnTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInInterfaceWithoutReturnTypeDeclaration.php b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInInterfaceWithoutReturnTypeDeclaration.php
similarity index 84%
rename from test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInInterfaceWithoutReturnTypeDeclaration.php
rename to test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInInterfaceWithoutReturnTypeDeclaration.php
index ebc2f940..41b3de7d 100644
--- a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInInterfaceWithoutReturnTypeDeclaration.php
+++ b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInInterfaceWithoutReturnTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule;
 
 interface MethodInInterfaceWithoutReturnTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInTraitWithNullableReturnTypeDeclaration.php b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInTraitWithNullableReturnTypeDeclaration.php
similarity index 86%
rename from test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInTraitWithNullableReturnTypeDeclaration.php
rename to test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInTraitWithNullableReturnTypeDeclaration.php
index ca087832..1edd2838 100644
--- a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInTraitWithNullableReturnTypeDeclaration.php
+++ b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInTraitWithNullableReturnTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule;
 
 trait MethodInTraitWithNullableReturnTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInTraitWithReturnTypeDeclaration.php b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInTraitWithReturnTypeDeclaration.php
similarity index 86%
rename from test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInTraitWithReturnTypeDeclaration.php
rename to test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInTraitWithReturnTypeDeclaration.php
index ddb253df..ee8350a7 100644
--- a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInTraitWithReturnTypeDeclaration.php
+++ b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInTraitWithReturnTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule;
 
 trait MethodInTraitWithReturnTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInTraitWithoutReturnTypeDeclaration.php b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInTraitWithoutReturnTypeDeclaration.php
similarity index 86%
rename from test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInTraitWithoutReturnTypeDeclaration.php
rename to test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInTraitWithoutReturnTypeDeclaration.php
index 94a13622..df937137 100644
--- a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInTraitWithoutReturnTypeDeclaration.php
+++ b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/MethodInTraitWithoutReturnTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule;
 
 trait MethodInTraitWithoutReturnTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInAnonymousClassWithReturnTypeDeclaration.php b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInAnonymousClassWithReturnTypeDeclaration.php
deleted file mode 100644
index 382a9985..00000000
--- a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInAnonymousClassWithReturnTypeDeclaration.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\Success;
-
-final class MethodInAnonymousClassWithReturnTypeDeclaration
-{
-    public function foo()
-    {
-        return new class() {
-            public function toString(): string
-            {
-                return 'Hello';
-            }
-        };
-    }
-}
diff --git a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInAnonymousClassWithoutReturnTypeDeclaration.php b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInAnonymousClassWithoutReturnTypeDeclaration.php
deleted file mode 100644
index 231c7854..00000000
--- a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInAnonymousClassWithoutReturnTypeDeclaration.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\Success;
-
-final class MethodInAnonymousClassWithoutReturnTypeDeclaration
-{
-    public function foo()
-    {
-        return new class() {
-            public function toString()
-            {
-                return 'Hello';
-            }
-        };
-    }
-}
diff --git a/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/script.php b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/script.php
new file mode 100644
index 00000000..c9fa3dd8
--- /dev/null
+++ b/test/Fixture/Methods/NoNullableReturnTypeDeclarationRule/script.php
@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule;
+
+$foo = new class() {
+    public function toString()
+    {
+        return 'Hello';
+    }
+};
+
+$bar = new class() {
+    public function toString(): string
+    {
+        return 'Hello';
+    }
+};
+
+$baz = new class() {
+    public function toString(): ?string
+    {
+        return 'Hello';
+    }
+};
+
+$qux = new class() {
+    public function toString(): null|string
+    {
+        return 'Hello';
+    }
+};
diff --git a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/ClassImplementingContainerInterface.php b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassImplementingContainerInterface.php
similarity index 77%
rename from test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/ClassImplementingContainerInterface.php
rename to test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassImplementingContainerInterface.php
index 6ed3e11a..15df69e8 100644
--- a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/ClassImplementingContainerInterface.php
+++ b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassImplementingContainerInterface.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule;
 
 use Psr\Container;
 
@@ -12,7 +12,7 @@ public function get($id): void
     {
     }
 
-    public function has($id): void
+    public function has($id): bool
     {
     }
 }
diff --git a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/ClassImplementingContainerInterfaceWithMethodWithParameterWithSelfAsTypeDeclaration.php b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassImplementingContainerInterfaceWithMethodWithParameterWithSelfAsTypeDeclaration.php
similarity index 90%
rename from test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/ClassImplementingContainerInterfaceWithMethodWithParameterWithSelfAsTypeDeclaration.php
rename to test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassImplementingContainerInterfaceWithMethodWithParameterWithSelfAsTypeDeclaration.php
index e08d663a..8bf73287 100644
--- a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/ClassImplementingContainerInterfaceWithMethodWithParameterWithSelfAsTypeDeclaration.php
+++ b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassImplementingContainerInterfaceWithMethodWithParameterWithSelfAsTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule;
 
 use Psr\Container;
 
diff --git a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/ClassWithMethodWithParameterWithClassImplementingContainerInterfaceAsTypeDeclaration.php b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassWithMethodWithParameterWithClassImplementingContainerInterfaceAsTypeDeclaration.php
similarity index 87%
rename from test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/ClassWithMethodWithParameterWithClassImplementingContainerInterfaceAsTypeDeclaration.php
rename to test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassWithMethodWithParameterWithClassImplementingContainerInterfaceAsTypeDeclaration.php
index 2138fd40..5956fd77 100644
--- a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/ClassWithMethodWithParameterWithClassImplementingContainerInterfaceAsTypeDeclaration.php
+++ b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassWithMethodWithParameterWithClassImplementingContainerInterfaceAsTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule;
 
 final class ClassWithMethodWithParameterWithClassImplementingContainerInterfaceAsTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/ClassWithMethodWithParameterWithClassImplementingContainerInterfaceAsTypeDeclarationWhereNameIsExcluded.php b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassWithMethodWithParameterWithClassImplementingContainerInterfaceAsTypeDeclarationWhereNameIsExcluded.php
similarity index 63%
rename from test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/ClassWithMethodWithParameterWithClassImplementingContainerInterfaceAsTypeDeclarationWhereNameIsExcluded.php
rename to test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassWithMethodWithParameterWithClassImplementingContainerInterfaceAsTypeDeclarationWhereNameIsExcluded.php
index a1bce2cf..e40a94b5 100644
--- a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/ClassWithMethodWithParameterWithClassImplementingContainerInterfaceAsTypeDeclarationWhereNameIsExcluded.php
+++ b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassWithMethodWithParameterWithClassImplementingContainerInterfaceAsTypeDeclarationWhereNameIsExcluded.php
@@ -2,9 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Success;
-
-use Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Failure\ClassImplementingContainerInterface;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule;
 
 final class ClassWithMethodWithParameterWithClassImplementingContainerInterfaceAsTypeDeclarationWhereNameIsExcluded
 {
diff --git a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/ClassWithMethodWithParameterWithContainerInterfaceAsTypeDeclaration.php b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassWithMethodWithParameterWithContainerInterfaceAsTypeDeclaration.php
similarity index 87%
rename from test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/ClassWithMethodWithParameterWithContainerInterfaceAsTypeDeclaration.php
rename to test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassWithMethodWithParameterWithContainerInterfaceAsTypeDeclaration.php
index 1cb15f3d..19c009ae 100644
--- a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/ClassWithMethodWithParameterWithContainerInterfaceAsTypeDeclaration.php
+++ b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassWithMethodWithParameterWithContainerInterfaceAsTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule;
 
 use Psr\Container;
 
diff --git a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/ClassWithMethodWithParameterWithInterfaceExtendingContainerInterfaceAsTypeDeclaration.php b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassWithMethodWithParameterWithInterfaceExtendingContainerInterfaceAsTypeDeclaration.php
similarity index 87%
rename from test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/ClassWithMethodWithParameterWithInterfaceExtendingContainerInterfaceAsTypeDeclaration.php
rename to test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassWithMethodWithParameterWithInterfaceExtendingContainerInterfaceAsTypeDeclaration.php
index 6dc5ceaa..d929fb3a 100644
--- a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/ClassWithMethodWithParameterWithInterfaceExtendingContainerInterfaceAsTypeDeclaration.php
+++ b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassWithMethodWithParameterWithInterfaceExtendingContainerInterfaceAsTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule;
 
 final class ClassWithMethodWithParameterWithInterfaceExtendingContainerInterfaceAsTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/ClassWithMethodWithParameterWithOtherTypeDeclaration.php b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassWithMethodWithParameterWithOtherTypeDeclaration.php
similarity index 84%
rename from test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/ClassWithMethodWithParameterWithOtherTypeDeclaration.php
rename to test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassWithMethodWithParameterWithOtherTypeDeclaration.php
index 0c1af449..f6a276c2 100644
--- a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/ClassWithMethodWithParameterWithOtherTypeDeclaration.php
+++ b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassWithMethodWithParameterWithOtherTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule;
 
 final class ClassWithMethodWithParameterWithOtherTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/ClassWithMethodWithoutParameter.php b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassWithMethodWithoutParameter.php
similarity index 81%
rename from test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/ClassWithMethodWithoutParameter.php
rename to test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassWithMethodWithoutParameter.php
index 3e3fa349..be2bdb11 100644
--- a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/ClassWithMethodWithoutParameter.php
+++ b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ClassWithMethodWithoutParameter.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule;
 
 final class ClassWithMethodWithoutParameter
 {
diff --git a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/ContainerInterface.php b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ContainerInterface.php
similarity index 75%
rename from test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/ContainerInterface.php
rename to test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ContainerInterface.php
index aebbf878..1c653e69 100644
--- a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/ContainerInterface.php
+++ b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/ContainerInterface.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule;
 
 interface ContainerInterface
 {
diff --git a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/anonymous-class-with-method-with-parameter-with-class-implementing-container-interface-as-type-declaration.php b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/anonymous-class-with-method-with-parameter-with-class-implementing-container-interface-as-type-declaration.php
deleted file mode 100644
index dc5db410..00000000
--- a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/anonymous-class-with-method-with-parameter-with-class-implementing-container-interface-as-type-declaration.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Failure;
-
-/** @var ClassImplementingContainerInterface $container */
-new class($container) {
-    public function __construct(ClassImplementingContainerInterface $container)
-    {
-    }
-};
diff --git a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/anonymous-class-with-method-with-parameter-with-container-interface-as-type-declaration.php b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/anonymous-class-with-method-with-parameter-with-container-interface-as-type-declaration.php
deleted file mode 100644
index b0e6d5d9..00000000
--- a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/anonymous-class-with-method-with-parameter-with-container-interface-as-type-declaration.php
+++ /dev/null
@@ -1,14 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Failure;
-
-use Psr\Container;
-
-/** @var Container\ContainerInterface $container */
-new class($container) {
-    public function __construct(Container\ContainerInterface $container)
-    {
-    }
-};
diff --git a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/anonymous-class-with-method-with-parameter-with-interface-extending-container-interface-as-type-declaration.php b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/anonymous-class-with-method-with-parameter-with-interface-extending-container-interface-as-type-declaration.php
deleted file mode 100644
index 2a8abff7..00000000
--- a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/anonymous-class-with-method-with-parameter-with-interface-extending-container-interface-as-type-declaration.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Failure;
-
-/** @var InterfaceExtendingContainerInterface $container */
-new class($container) {
-    public function __construct(InterfaceExtendingContainerInterface $container)
-    {
-    }
-};
diff --git a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/InterfaceExtendingContainerInterface.php b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/InterfaceExtendingContainerInterface.php
similarity index 82%
rename from test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/InterfaceExtendingContainerInterface.php
rename to test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/InterfaceExtendingContainerInterface.php
index 9e729457..062eda7a 100644
--- a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/InterfaceExtendingContainerInterface.php
+++ b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/InterfaceExtendingContainerInterface.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule;
 
 use Psr\Container;
 
diff --git a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/InterfaceWithMethodWithParameterWithContainerInterfaceAsTypeDeclaration.php b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/InterfaceWithMethodWithParameterWithContainerInterfaceAsTypeDeclaration.php
similarity index 86%
rename from test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/InterfaceWithMethodWithParameterWithContainerInterfaceAsTypeDeclaration.php
rename to test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/InterfaceWithMethodWithParameterWithContainerInterfaceAsTypeDeclaration.php
index 1eddbb5f..fac5432c 100644
--- a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/InterfaceWithMethodWithParameterWithContainerInterfaceAsTypeDeclaration.php
+++ b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/InterfaceWithMethodWithParameterWithContainerInterfaceAsTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule;
 
 use Psr\Container;
 
diff --git a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/InterfaceWithMethodWithParameterWithContainerInterfaceAsTypeDeclarationWhereNameIsExcluded.php b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/InterfaceWithMethodWithParameterWithContainerInterfaceAsTypeDeclarationWhereNameIsExcluded.php
similarity index 87%
rename from test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/InterfaceWithMethodWithParameterWithContainerInterfaceAsTypeDeclarationWhereNameIsExcluded.php
rename to test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/InterfaceWithMethodWithParameterWithContainerInterfaceAsTypeDeclarationWhereNameIsExcluded.php
index c3420bdc..ae6994b8 100644
--- a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/InterfaceWithMethodWithParameterWithContainerInterfaceAsTypeDeclarationWhereNameIsExcluded.php
+++ b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/InterfaceWithMethodWithParameterWithContainerInterfaceAsTypeDeclarationWhereNameIsExcluded.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule;
 
 use Psr\Container;
 
diff --git a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/InterfaceWithMethodWithParameterWithOtherTypeDeclaration.php b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/InterfaceWithMethodWithParameterWithOtherTypeDeclaration.php
similarity index 84%
rename from test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/InterfaceWithMethodWithParameterWithOtherTypeDeclaration.php
rename to test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/InterfaceWithMethodWithParameterWithOtherTypeDeclaration.php
index 179c8861..450d2adc 100644
--- a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/InterfaceWithMethodWithParameterWithOtherTypeDeclaration.php
+++ b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/InterfaceWithMethodWithParameterWithOtherTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule;
 
 interface InterfaceWithMethodWithParameterWithOtherTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/InterfaceWithMethodWithoutParameter.php b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/InterfaceWithMethodWithoutParameter.php
similarity index 81%
rename from test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/InterfaceWithMethodWithoutParameter.php
rename to test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/InterfaceWithMethodWithoutParameter.php
index 81d66a3e..8b48814f 100644
--- a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/InterfaceWithMethodWithoutParameter.php
+++ b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/InterfaceWithMethodWithoutParameter.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule;
 
 interface InterfaceWithMethodWithoutParameter
 {
diff --git a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/anonymous-class-with-method-with-parameter-with-class-implementing-container-interface-as-type-declaration-where-name-is-excluded.php b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/anonymous-class-with-method-with-parameter-with-class-implementing-container-interface-as-type-declaration-where-name-is-excluded.php
deleted file mode 100644
index 1d6dc473..00000000
--- a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/anonymous-class-with-method-with-parameter-with-class-implementing-container-interface-as-type-declaration-where-name-is-excluded.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Failure;
-
-/** @var ClassImplementingContainerInterface $container */
-new class($container) {
-    public function loadExtension(ClassImplementingContainerInterface $container): void
-    {
-    }
-};
diff --git a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/anonymous-class-with-method-with-parameter-with-other-type-declaration.php b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/anonymous-class-with-method-with-parameter-with-other-type-declaration.php
deleted file mode 100644
index 96cad947..00000000
--- a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/anonymous-class-with-method-with-parameter-with-other-type-declaration.php
+++ /dev/null
@@ -1,11 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Success;
-
-new class() {
-    public function __construct(ContainerInterface $container)
-    {
-    }
-};
diff --git a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/anonymous-class-with-method-without-parameter.php b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/anonymous-class-with-method-without-parameter.php
deleted file mode 100644
index e9876a01..00000000
--- a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/anonymous-class-with-method-without-parameter.php
+++ /dev/null
@@ -1,11 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Success;
-
-new class() {
-    public function __construct()
-    {
-    }
-};
diff --git a/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/script.php b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/script.php
new file mode 100644
index 00000000..fbfc0372
--- /dev/null
+++ b/test/Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/script.php
@@ -0,0 +1,46 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule;
+
+use Psr\Container;
+
+$foo = new class() {
+    public function __construct()
+    {
+    }
+};
+
+$bar = new class() {
+    public function __construct(ContainerInterface $container)
+    {
+    }
+};
+
+$baz = new class() {
+    public function loadExtension(ClassImplementingContainerInterface $container): void
+    {
+    }
+};
+
+/** @var ClassImplementingContainerInterface $container */
+$qux = new class($container) {
+    public function __construct(ClassImplementingContainerInterface $container)
+    {
+    }
+};
+
+/** @var Container\ContainerInterface $container */
+$quux = new class($container) {
+    public function __construct(Container\ContainerInterface $container)
+    {
+    }
+};
+
+/** @var InterfaceExtendingContainerInterface $container */
+new class($container) {
+    public function __construct(InterfaceExtendingContainerInterface $container)
+    {
+    }
+};
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/method-in-anonymous-class-with-parameter-with-null-default-value.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/method-in-anonymous-class-with-parameter-with-null-default-value.php
deleted file mode 100644
index 370d5ce0..00000000
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/method-in-anonymous-class-with-parameter-with-null-default-value.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Success;
-
-new class() {
-    public function foo($bar = null)
-    {
-        return $bar;
-    }
-};
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/method-in-anonymous-class-with-parameter-with-root-namespace-referenced-null-default-value.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/method-in-anonymous-class-with-parameter-with-root-namespace-referenced-null-default-value.php
deleted file mode 100644
index 6cc6bda0..00000000
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/method-in-anonymous-class-with-parameter-with-root-namespace-referenced-null-default-value.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Success;
-
-new class() {
-    public function foo($bar = \null)
-    {
-        return $bar;
-    }
-};
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/method-in-anonymous-class-with-parameter-with-wrongly-capitalized-null-default-value.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/method-in-anonymous-class-with-parameter-with-wrongly-capitalized-null-default-value.php
deleted file mode 100644
index e3527ba7..00000000
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/method-in-anonymous-class-with-parameter-with-wrongly-capitalized-null-default-value.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Success;
-
-new class() {
-    public function foo($bar = NuLl)
-    {
-        return $bar;
-    }
-};
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInClassWithParameterWithNonNullDefaultValue.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInClassWithParameterWithNonNullDefaultValue.php
similarity index 86%
rename from test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInClassWithParameterWithNonNullDefaultValue.php
rename to test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInClassWithParameterWithNonNullDefaultValue.php
index 729926cc..4f0c6c4a 100644
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInClassWithParameterWithNonNullDefaultValue.php
+++ b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInClassWithParameterWithNonNullDefaultValue.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule;
 
 final class MethodInClassWithParameterWithNonNullDefaultValue
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInClassWithParameterWithNullDefaultValue.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInClassWithParameterWithNullDefaultValue.php
similarity index 86%
rename from test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInClassWithParameterWithNullDefaultValue.php
rename to test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInClassWithParameterWithNullDefaultValue.php
index 40eaa705..5d128f25 100644
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInClassWithParameterWithNullDefaultValue.php
+++ b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInClassWithParameterWithNullDefaultValue.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule;
 
 final class MethodInClassWithParameterWithNullDefaultValue
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInClassWithParameterWithRootNamespaceReferencedNullDefaultValue.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInClassWithParameterWithRootNamespaceReferencedNullDefaultValue.php
similarity index 87%
rename from test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInClassWithParameterWithRootNamespaceReferencedNullDefaultValue.php
rename to test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInClassWithParameterWithRootNamespaceReferencedNullDefaultValue.php
index df09fd73..19618b50 100644
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInClassWithParameterWithRootNamespaceReferencedNullDefaultValue.php
+++ b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInClassWithParameterWithRootNamespaceReferencedNullDefaultValue.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule;
 
 final class MethodInClassWithParameterWithRootNamespaceReferencedNullDefaultValue
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInClassWithParameterWithWronglyCapitalizedNullDefaultValue.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInClassWithParameterWithWronglyCapitalizedNullDefaultValue.php
similarity index 87%
rename from test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInClassWithParameterWithWronglyCapitalizedNullDefaultValue.php
rename to test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInClassWithParameterWithWronglyCapitalizedNullDefaultValue.php
index b23b79c8..7a16b847 100644
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInClassWithParameterWithWronglyCapitalizedNullDefaultValue.php
+++ b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInClassWithParameterWithWronglyCapitalizedNullDefaultValue.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule;
 
 final class MethodInClassWithParameterWithWronglyCapitalizedNullDefaultValue
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInClassWithParameterWithoutDefaultValue.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInClassWithParameterWithoutDefaultValue.php
similarity index 86%
rename from test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInClassWithParameterWithoutDefaultValue.php
rename to test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInClassWithParameterWithoutDefaultValue.php
index 89ae0d5f..8e1322a8 100644
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInClassWithParameterWithoutDefaultValue.php
+++ b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInClassWithParameterWithoutDefaultValue.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule;
 
 final class MethodInClassWithParameterWithoutDefaultValue
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInClassWithoutParameters.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInClassWithoutParameters.php
similarity index 84%
rename from test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInClassWithoutParameters.php
rename to test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInClassWithoutParameters.php
index 2fd62066..1c9f7d49 100644
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInClassWithoutParameters.php
+++ b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInClassWithoutParameters.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule;
 
 final class MethodInClassWithoutParameters
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInInterfaceWithParameterWithNonNullDefaultValue.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInInterfaceWithParameterWithNonNullDefaultValue.php
similarity index 85%
rename from test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInInterfaceWithParameterWithNonNullDefaultValue.php
rename to test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInInterfaceWithParameterWithNonNullDefaultValue.php
index 03c8dfdb..b4c57192 100644
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInInterfaceWithParameterWithNonNullDefaultValue.php
+++ b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInInterfaceWithParameterWithNonNullDefaultValue.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule;
 
 interface MethodInInterfaceWithParameterWithNonNullDefaultValue
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInInterfaceWithParameterWithNullDefaultValue.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInInterfaceWithParameterWithNullDefaultValue.php
similarity index 85%
rename from test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInInterfaceWithParameterWithNullDefaultValue.php
rename to test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInInterfaceWithParameterWithNullDefaultValue.php
index 7fff1a6d..45d07ec1 100644
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInInterfaceWithParameterWithNullDefaultValue.php
+++ b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInInterfaceWithParameterWithNullDefaultValue.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule;
 
 interface MethodInInterfaceWithParameterWithNullDefaultValue
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInInterfaceWithParameterWithRootNamespaceReferencedNullDefaultValue.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInInterfaceWithParameterWithRootNamespaceReferencedNullDefaultValue.php
similarity index 86%
rename from test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInInterfaceWithParameterWithRootNamespaceReferencedNullDefaultValue.php
rename to test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInInterfaceWithParameterWithRootNamespaceReferencedNullDefaultValue.php
index cd28e299..e870e433 100644
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInInterfaceWithParameterWithRootNamespaceReferencedNullDefaultValue.php
+++ b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInInterfaceWithParameterWithRootNamespaceReferencedNullDefaultValue.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule;
 
 interface MethodInInterfaceWithParameterWithRootNamespaceReferencedNullDefaultValue
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInInterfaceWithParameterWithWronlgyCapitalizedNullDefaultValue.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInInterfaceWithParameterWithWronlgyCapitalizedNullDefaultValue.php
similarity index 86%
rename from test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInInterfaceWithParameterWithWronlgyCapitalizedNullDefaultValue.php
rename to test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInInterfaceWithParameterWithWronlgyCapitalizedNullDefaultValue.php
index af449b78..8484b549 100644
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInInterfaceWithParameterWithWronlgyCapitalizedNullDefaultValue.php
+++ b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInInterfaceWithParameterWithWronlgyCapitalizedNullDefaultValue.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule;
 
 interface MethodInInterfaceWithParameterWithWronlgyCapitalizedNullDefaultValue
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInInterfaceWithParameterWithoutDefaultValue.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInInterfaceWithParameterWithoutDefaultValue.php
similarity index 84%
rename from test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInInterfaceWithParameterWithoutDefaultValue.php
rename to test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInInterfaceWithParameterWithoutDefaultValue.php
index 71a2cccd..5009dd1c 100644
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInInterfaceWithParameterWithoutDefaultValue.php
+++ b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInInterfaceWithParameterWithoutDefaultValue.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule;
 
 interface MethodInInterfaceWithParameterWithoutDefaultValue
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInInterfaceWithoutParameters.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInInterfaceWithoutParameters.php
similarity index 83%
rename from test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInInterfaceWithoutParameters.php
rename to test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInInterfaceWithoutParameters.php
index 49b1fa22..57587f40 100644
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInInterfaceWithoutParameters.php
+++ b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInInterfaceWithoutParameters.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule;
 
 interface MethodInInterfaceWithoutParameters
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithParameterWithDefaultValue.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInTraitWithParameterWithDefaultValue.php
similarity index 86%
rename from test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithParameterWithDefaultValue.php
rename to test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInTraitWithParameterWithDefaultValue.php
index 7b129c93..bce82017 100644
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithParameterWithDefaultValue.php
+++ b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInTraitWithParameterWithDefaultValue.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule;
 
 trait MethodInTraitWithParameterWithDefaultValue
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithParameterWithNonNullDefaultValue.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInTraitWithParameterWithNonNullDefaultValue.php
similarity index 86%
rename from test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithParameterWithNonNullDefaultValue.php
rename to test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInTraitWithParameterWithNonNullDefaultValue.php
index 3bacae09..b3f12760 100644
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithParameterWithNonNullDefaultValue.php
+++ b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInTraitWithParameterWithNonNullDefaultValue.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule;
 
 trait MethodInTraitWithParameterWithNonNullDefaultValue
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithParameterWithRootNamespaceReferencedNullDefaultValue.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInTraitWithParameterWithRootNamespaceReferencedNullDefaultValue.php
similarity index 87%
rename from test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithParameterWithRootNamespaceReferencedNullDefaultValue.php
rename to test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInTraitWithParameterWithRootNamespaceReferencedNullDefaultValue.php
index c74abc9d..9f0c62a5 100644
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithParameterWithRootNamespaceReferencedNullDefaultValue.php
+++ b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInTraitWithParameterWithRootNamespaceReferencedNullDefaultValue.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule;
 
 trait MethodInTraitWithParameterWithRootNamespaceReferencedNullDefaultValue
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithParameterWithWronlgyCapitalizedNullDefaultValue.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInTraitWithParameterWithWronlgyCapitalizedNullDefaultValue.php
similarity index 87%
rename from test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithParameterWithWronlgyCapitalizedNullDefaultValue.php
rename to test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInTraitWithParameterWithWronlgyCapitalizedNullDefaultValue.php
index 1f6b4275..ae18de24 100644
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithParameterWithWronlgyCapitalizedNullDefaultValue.php
+++ b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInTraitWithParameterWithWronlgyCapitalizedNullDefaultValue.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule;
 
 trait MethodInTraitWithParameterWithWronlgyCapitalizedNullDefaultValue
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithParameterWithoutDefaultValue.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInTraitWithParameterWithoutDefaultValue.php
similarity index 86%
rename from test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithParameterWithoutDefaultValue.php
rename to test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInTraitWithParameterWithoutDefaultValue.php
index 1f7f3249..c6a071fe 100644
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithParameterWithoutDefaultValue.php
+++ b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInTraitWithParameterWithoutDefaultValue.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule;
 
 trait MethodInTraitWithParameterWithoutDefaultValue
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithoutParameters.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInTraitWithoutParameters.php
similarity index 83%
rename from test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithoutParameters.php
rename to test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInTraitWithoutParameters.php
index aa63ed05..893b3701 100644
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithoutParameters.php
+++ b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/MethodInTraitWithoutParameters.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule;
 
 trait MethodInTraitWithoutParameters
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/method-in-anonymous-class-with-parameter-with-non-null-default-value.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/method-in-anonymous-class-with-parameter-with-non-null-default-value.php
deleted file mode 100644
index 16956236..00000000
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/method-in-anonymous-class-with-parameter-with-non-null-default-value.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Success;
-
-new class() {
-    public function foo($bar = true)
-    {
-        return $bar;
-    }
-};
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/method-in-anonymous-class-with-parameter-without-default-value.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/method-in-anonymous-class-with-parameter-without-default-value.php
deleted file mode 100644
index a4c71f95..00000000
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/method-in-anonymous-class-with-parameter-without-default-value.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Success;
-
-new class() {
-    public function foo($bar)
-    {
-        return $bar;
-    }
-};
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/method-in-anonymous-class-without-parameters.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/method-in-anonymous-class-without-parameters.php
deleted file mode 100644
index 786ec228..00000000
--- a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/method-in-anonymous-class-without-parameters.php
+++ /dev/null
@@ -1,11 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Success;
-
-new class() {
-    public function foo(): void
-    {
-    }
-};
diff --git a/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/script.php b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/script.php
new file mode 100644
index 00000000..e295fade
--- /dev/null
+++ b/test/Fixture/Methods/NoParameterWithNullDefaultValueRule/script.php
@@ -0,0 +1,46 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullDefaultValueRule;
+
+$foo = new class() {
+    public function foo(): void
+    {
+    }
+};
+
+$bar = new class() {
+    public function foo($bar)
+    {
+        return $bar;
+    }
+};
+
+$baz = new class() {
+    public function foo($bar = true)
+    {
+        return $bar;
+    }
+};
+
+$qux = new class() {
+    public function foo($bar = null)
+    {
+        return $bar;
+    }
+};
+
+$quux = new class() {
+    public function foo($bar = \null)
+    {
+        return $bar;
+    }
+};
+
+$quz = new class() {
+    public function foo($bar = NuLl)
+    {
+        return $bar;
+    }
+};
diff --git a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/method-in-anonymous-class-with-parameter-with-nullable-type-declaration.php b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/method-in-anonymous-class-with-parameter-with-nullable-type-declaration.php
deleted file mode 100644
index 258aff35..00000000
--- a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/method-in-anonymous-class-with-parameter-with-nullable-type-declaration.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Success;
-
-new class() {
-    public function foo(?string $bar)
-    {
-        return $bar;
-    }
-};
diff --git a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/method-in-anonymous-class-with-parameter-with-nullable-union-type-declaration.php b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/method-in-anonymous-class-with-parameter-with-nullable-union-type-declaration.php
deleted file mode 100644
index f9dd8774..00000000
--- a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/method-in-anonymous-class-with-parameter-with-nullable-union-type-declaration.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Success;
-
-new class() {
-    public function foo(null|string $bar)
-    {
-        return $bar;
-    }
-};
diff --git a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/MethodInClassWithParameterWithNullableTypeDeclaration.php b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInClassWithParameterWithNullableTypeDeclaration.php
similarity index 85%
rename from test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/MethodInClassWithParameterWithNullableTypeDeclaration.php
rename to test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInClassWithParameterWithNullableTypeDeclaration.php
index 4b0c15a4..6faa647d 100644
--- a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/MethodInClassWithParameterWithNullableTypeDeclaration.php
+++ b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInClassWithParameterWithNullableTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule;
 
 final class MethodInClassWithParameterWithNullableTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/MethodInClassWithParameterWithNullableUnionTypeDeclaration.php b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInClassWithParameterWithNullableUnionTypeDeclaration.php
similarity index 85%
rename from test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/MethodInClassWithParameterWithNullableUnionTypeDeclaration.php
rename to test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInClassWithParameterWithNullableUnionTypeDeclaration.php
index 6d62ff3c..1f1aa524 100644
--- a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/MethodInClassWithParameterWithNullableUnionTypeDeclaration.php
+++ b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInClassWithParameterWithNullableUnionTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule;
 
 final class MethodInClassWithParameterWithNullableUnionTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInClassWithParameterWithTypeDeclaration.php b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInClassWithParameterWithTypeDeclaration.php
similarity index 84%
rename from test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInClassWithParameterWithTypeDeclaration.php
rename to test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInClassWithParameterWithTypeDeclaration.php
index 1a092f04..d012b501 100644
--- a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInClassWithParameterWithTypeDeclaration.php
+++ b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInClassWithParameterWithTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule;
 
 final class MethodInClassWithParameterWithTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInClassWithParameterWithoutTypeDeclaration.php b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInClassWithParameterWithoutTypeDeclaration.php
similarity index 84%
rename from test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInClassWithParameterWithoutTypeDeclaration.php
rename to test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInClassWithParameterWithoutTypeDeclaration.php
index 2b29be30..3dd720fa 100644
--- a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInClassWithParameterWithoutTypeDeclaration.php
+++ b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInClassWithParameterWithoutTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule;
 
 final class MethodInClassWithParameterWithoutTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInClassWithoutParameters.php b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInClassWithoutParameters.php
similarity index 81%
rename from test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInClassWithoutParameters.php
rename to test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInClassWithoutParameters.php
index e57a58e1..5f33c813 100644
--- a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInClassWithoutParameters.php
+++ b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInClassWithoutParameters.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule;
 
 final class MethodInClassWithoutParameters
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/MethodInInterfaceWithParameterWithNullableTypeDeclaration.php b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInInterfaceWithParameterWithNullableTypeDeclaration.php
similarity index 83%
rename from test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/MethodInInterfaceWithParameterWithNullableTypeDeclaration.php
rename to test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInInterfaceWithParameterWithNullableTypeDeclaration.php
index 46a99c48..1ae1b927 100644
--- a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/MethodInInterfaceWithParameterWithNullableTypeDeclaration.php
+++ b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInInterfaceWithParameterWithNullableTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule;
 
 interface MethodInInterfaceWithParameterWithNullableTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/MethodInInterfaceWithParameterWithNullableUnionTypeDeclaration.php b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInInterfaceWithParameterWithNullableUnionTypeDeclaration.php
similarity index 83%
rename from test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/MethodInInterfaceWithParameterWithNullableUnionTypeDeclaration.php
rename to test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInInterfaceWithParameterWithNullableUnionTypeDeclaration.php
index 3ba16028..2a94b305 100644
--- a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/MethodInInterfaceWithParameterWithNullableUnionTypeDeclaration.php
+++ b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInInterfaceWithParameterWithNullableUnionTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule;
 
 interface MethodInInterfaceWithParameterWithNullableUnionTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInInterfaceWithParameterWithTypeDeclaration.php b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInInterfaceWithParameterWithTypeDeclaration.php
similarity index 82%
rename from test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInInterfaceWithParameterWithTypeDeclaration.php
rename to test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInInterfaceWithParameterWithTypeDeclaration.php
index 4f051594..85e8a36f 100644
--- a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInInterfaceWithParameterWithTypeDeclaration.php
+++ b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInInterfaceWithParameterWithTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule;
 
 interface MethodInInterfaceWithParameterWithTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInInterfaceWithParameterWithoutTypeDeclaration.php b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInInterfaceWithParameterWithoutTypeDeclaration.php
similarity index 82%
rename from test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInInterfaceWithParameterWithoutTypeDeclaration.php
rename to test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInInterfaceWithParameterWithoutTypeDeclaration.php
index 900d869a..9d947c71 100644
--- a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInInterfaceWithParameterWithoutTypeDeclaration.php
+++ b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInInterfaceWithParameterWithoutTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule;
 
 interface MethodInInterfaceWithParameterWithoutTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInInterfaceWithoutParameters.php b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInInterfaceWithoutParameters.php
similarity index 80%
rename from test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInInterfaceWithoutParameters.php
rename to test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInInterfaceWithoutParameters.php
index 50afd2eb..4889f74b 100644
--- a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInInterfaceWithoutParameters.php
+++ b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInInterfaceWithoutParameters.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule;
 
 interface MethodInInterfaceWithoutParameters
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInTraitWithParameterWithNullableTypeDeclaration.php b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInTraitWithParameterWithNullableTypeDeclaration.php
similarity index 84%
rename from test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInTraitWithParameterWithNullableTypeDeclaration.php
rename to test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInTraitWithParameterWithNullableTypeDeclaration.php
index d0fd239a..0d3a2ccc 100644
--- a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInTraitWithParameterWithNullableTypeDeclaration.php
+++ b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInTraitWithParameterWithNullableTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule;
 
 trait MethodInTraitWithParameterWithNullableTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInTraitWithParameterWithTypeDeclaration.php b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInTraitWithParameterWithTypeDeclaration.php
similarity index 84%
rename from test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInTraitWithParameterWithTypeDeclaration.php
rename to test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInTraitWithParameterWithTypeDeclaration.php
index d07ff0af..b5d5f877 100644
--- a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInTraitWithParameterWithTypeDeclaration.php
+++ b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInTraitWithParameterWithTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule;
 
 trait MethodInTraitWithParameterWithTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInTraitWithParameterWithoutTypeDeclaration.php b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInTraitWithParameterWithoutTypeDeclaration.php
similarity index 83%
rename from test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInTraitWithParameterWithoutTypeDeclaration.php
rename to test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInTraitWithParameterWithoutTypeDeclaration.php
index b085b819..c494c25b 100644
--- a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInTraitWithParameterWithoutTypeDeclaration.php
+++ b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInTraitWithParameterWithoutTypeDeclaration.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule;
 
 trait MethodInTraitWithParameterWithoutTypeDeclaration
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInTraitWithoutParameters.php b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInTraitWithoutParameters.php
similarity index 81%
rename from test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInTraitWithoutParameters.php
rename to test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInTraitWithoutParameters.php
index 5d84738b..79da1303 100644
--- a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInTraitWithoutParameters.php
+++ b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/MethodInTraitWithoutParameters.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule;
 
 trait MethodInTraitWithoutParameters
 {
diff --git a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/method-in-anonymous-class-with-parameter-with-type-declaration.php b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/method-in-anonymous-class-with-parameter-with-type-declaration.php
deleted file mode 100644
index 2e1bf585..00000000
--- a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/method-in-anonymous-class-with-parameter-with-type-declaration.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Success;
-
-new class() {
-    public function foo(string $bar)
-    {
-        return $bar;
-    }
-};
diff --git a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/method-in-anonymous-class-with-parameter-without-type-declaration.php b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/method-in-anonymous-class-with-parameter-without-type-declaration.php
deleted file mode 100644
index 5d536bd3..00000000
--- a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/method-in-anonymous-class-with-parameter-without-type-declaration.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Success;
-
-new class() {
-    public function foo($bar)
-    {
-        return $bar;
-    }
-};
diff --git a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/method-in-anonymous-class-without-parameters.php b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/method-in-anonymous-class-without-parameters.php
deleted file mode 100644
index c16176b9..00000000
--- a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/method-in-anonymous-class-without-parameters.php
+++ /dev/null
@@ -1,11 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Success;
-
-new class() {
-    public function foo(): void
-    {
-    }
-};
diff --git a/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/script.php b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/script.php
new file mode 100644
index 00000000..41588c85
--- /dev/null
+++ b/test/Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/script.php
@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule;
+
+$foo = new class() {
+    public function foo(): void
+    {
+    }
+};
+
+$bar = new class() {
+    public function foo($bar)
+    {
+        return $bar;
+    }
+};
+
+$baz = new class() {
+    public function foo(string $bar)
+    {
+        return $bar;
+    }
+};
+
+$qux = new class() {
+    public function foo(?string $bar)
+    {
+        return $bar;
+    }
+};
+
+$quux = new class() {
+    public function foo(null|string $bar)
+    {
+        return $bar;
+    }
+};
+
diff --git a/test/Fixture/Methods/PrivateInFinalClassRule/Success/AbstractClassExtendingAbstractClassWithProtectedMethod.php b/test/Fixture/Methods/PrivateInFinalClassRule/AbstractClassExtendingAbstractClassWithProtectedMethod.php
similarity index 90%
rename from test/Fixture/Methods/PrivateInFinalClassRule/Success/AbstractClassExtendingAbstractClassWithProtectedMethod.php
rename to test/Fixture/Methods/PrivateInFinalClassRule/AbstractClassExtendingAbstractClassWithProtectedMethod.php
index d702deb7..450630bf 100644
--- a/test/Fixture/Methods/PrivateInFinalClassRule/Success/AbstractClassExtendingAbstractClassWithProtectedMethod.php
+++ b/test/Fixture/Methods/PrivateInFinalClassRule/AbstractClassExtendingAbstractClassWithProtectedMethod.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\PrivateInFinalClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\PrivateInFinalClassRule;
 
 abstract class AbstractClassExtendingAbstractClassWithProtectedMethod extends AbstractClassWithProtectedMethod
 {
diff --git a/test/Fixture/Methods/PrivateInFinalClassRule/Success/AbstractClassWithProtectedMethod.php b/test/Fixture/Methods/PrivateInFinalClassRule/AbstractClassWithProtectedMethod.php
similarity index 89%
rename from test/Fixture/Methods/PrivateInFinalClassRule/Success/AbstractClassWithProtectedMethod.php
rename to test/Fixture/Methods/PrivateInFinalClassRule/AbstractClassWithProtectedMethod.php
index 9283d721..f1e5b2bd 100644
--- a/test/Fixture/Methods/PrivateInFinalClassRule/Success/AbstractClassWithProtectedMethod.php
+++ b/test/Fixture/Methods/PrivateInFinalClassRule/AbstractClassWithProtectedMethod.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\PrivateInFinalClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\PrivateInFinalClassRule;
 
 abstract class AbstractClassWithProtectedMethod
 {
diff --git a/test/Fixture/Methods/PrivateInFinalClassRule/Success/ClassWithProtectedMethod.php b/test/Fixture/Methods/PrivateInFinalClassRule/ClassWithProtectedMethod.php
similarity index 88%
rename from test/Fixture/Methods/PrivateInFinalClassRule/Success/ClassWithProtectedMethod.php
rename to test/Fixture/Methods/PrivateInFinalClassRule/ClassWithProtectedMethod.php
index a14561cd..3104872d 100644
--- a/test/Fixture/Methods/PrivateInFinalClassRule/Success/ClassWithProtectedMethod.php
+++ b/test/Fixture/Methods/PrivateInFinalClassRule/ClassWithProtectedMethod.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\PrivateInFinalClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\PrivateInFinalClassRule;
 
 class ClassWithProtectedMethod
 {
diff --git a/test/Fixture/Methods/PrivateInFinalClassRule/Success/FinalClassWithPrivateMethod.php b/test/Fixture/Methods/PrivateInFinalClassRule/FinalClassWithPrivateMethod.php
similarity index 89%
rename from test/Fixture/Methods/PrivateInFinalClassRule/Success/FinalClassWithPrivateMethod.php
rename to test/Fixture/Methods/PrivateInFinalClassRule/FinalClassWithPrivateMethod.php
index 460cdadf..576e9eac 100644
--- a/test/Fixture/Methods/PrivateInFinalClassRule/Success/FinalClassWithPrivateMethod.php
+++ b/test/Fixture/Methods/PrivateInFinalClassRule/FinalClassWithPrivateMethod.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\PrivateInFinalClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\PrivateInFinalClassRule;
 
 final class FinalClassWithPrivateMethod
 {
diff --git a/test/Fixture/Methods/PrivateInFinalClassRule/Failure/FinalClassWithProtectedMethod.php b/test/Fixture/Methods/PrivateInFinalClassRule/FinalClassWithProtectedMethod.php
similarity index 89%
rename from test/Fixture/Methods/PrivateInFinalClassRule/Failure/FinalClassWithProtectedMethod.php
rename to test/Fixture/Methods/PrivateInFinalClassRule/FinalClassWithProtectedMethod.php
index dc1a1ac3..606239c5 100644
--- a/test/Fixture/Methods/PrivateInFinalClassRule/Failure/FinalClassWithProtectedMethod.php
+++ b/test/Fixture/Methods/PrivateInFinalClassRule/FinalClassWithProtectedMethod.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\PrivateInFinalClassRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\PrivateInFinalClassRule;
 
 final class FinalClassWithProtectedMethod
 {
diff --git a/test/Fixture/Methods/PrivateInFinalClassRule/Success/FinalClassWithProtectedMethodExtendingClassExtendingClassWithSameProtectedMethod.php b/test/Fixture/Methods/PrivateInFinalClassRule/FinalClassWithProtectedMethodExtendingClassExtendingClassWithSameProtectedMethod.php
similarity index 93%
rename from test/Fixture/Methods/PrivateInFinalClassRule/Success/FinalClassWithProtectedMethodExtendingClassExtendingClassWithSameProtectedMethod.php
rename to test/Fixture/Methods/PrivateInFinalClassRule/FinalClassWithProtectedMethodExtendingClassExtendingClassWithSameProtectedMethod.php
index 9bfbc24d..c8afe67f 100644
--- a/test/Fixture/Methods/PrivateInFinalClassRule/Success/FinalClassWithProtectedMethodExtendingClassExtendingClassWithSameProtectedMethod.php
+++ b/test/Fixture/Methods/PrivateInFinalClassRule/FinalClassWithProtectedMethodExtendingClassExtendingClassWithSameProtectedMethod.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\PrivateInFinalClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\PrivateInFinalClassRule;
 
 final class FinalClassWithProtectedMethodExtendingClassExtendingClassWithSameProtectedMethod extends AbstractClassExtendingAbstractClassWithProtectedMethod
 {
diff --git a/test/Fixture/Methods/PrivateInFinalClassRule/Success/FinalClassWithProtectedMethodExtendingClassWithSameProtectedMethod.php b/test/Fixture/Methods/PrivateInFinalClassRule/FinalClassWithProtectedMethodExtendingClassWithSameProtectedMethod.php
similarity index 92%
rename from test/Fixture/Methods/PrivateInFinalClassRule/Success/FinalClassWithProtectedMethodExtendingClassWithSameProtectedMethod.php
rename to test/Fixture/Methods/PrivateInFinalClassRule/FinalClassWithProtectedMethodExtendingClassWithSameProtectedMethod.php
index ffb64a48..f31f7e6c 100644
--- a/test/Fixture/Methods/PrivateInFinalClassRule/Success/FinalClassWithProtectedMethodExtendingClassWithSameProtectedMethod.php
+++ b/test/Fixture/Methods/PrivateInFinalClassRule/FinalClassWithProtectedMethodExtendingClassWithSameProtectedMethod.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\PrivateInFinalClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\PrivateInFinalClassRule;
 
 final class FinalClassWithProtectedMethodExtendingClassWithSameProtectedMethod extends AbstractClassWithProtectedMethod
 {
diff --git a/test/Fixture/Methods/PrivateInFinalClassRule/Success/FinalClassWithProtectedMethodFromTrait.php b/test/Fixture/Methods/PrivateInFinalClassRule/FinalClassWithProtectedMethodFromTrait.php
similarity index 89%
rename from test/Fixture/Methods/PrivateInFinalClassRule/Success/FinalClassWithProtectedMethodFromTrait.php
rename to test/Fixture/Methods/PrivateInFinalClassRule/FinalClassWithProtectedMethodFromTrait.php
index 91ab2c60..ac6b9c1d 100644
--- a/test/Fixture/Methods/PrivateInFinalClassRule/Success/FinalClassWithProtectedMethodFromTrait.php
+++ b/test/Fixture/Methods/PrivateInFinalClassRule/FinalClassWithProtectedMethodFromTrait.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\PrivateInFinalClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\PrivateInFinalClassRule;
 
 final class FinalClassWithProtectedMethodFromTrait
 {
diff --git a/test/Fixture/Methods/PrivateInFinalClassRule/Success/FinalClassWithPublicMethod.php b/test/Fixture/Methods/PrivateInFinalClassRule/FinalClassWithPublicMethod.php
similarity index 89%
rename from test/Fixture/Methods/PrivateInFinalClassRule/Success/FinalClassWithPublicMethod.php
rename to test/Fixture/Methods/PrivateInFinalClassRule/FinalClassWithPublicMethod.php
index 859c394f..eea5a18f 100644
--- a/test/Fixture/Methods/PrivateInFinalClassRule/Success/FinalClassWithPublicMethod.php
+++ b/test/Fixture/Methods/PrivateInFinalClassRule/FinalClassWithPublicMethod.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\PrivateInFinalClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\PrivateInFinalClassRule;
 
 final class FinalClassWithPublicMethod
 {
diff --git a/test/Fixture/Methods/PrivateInFinalClassRule/Success/TraitWithProtectedMethod.php b/test/Fixture/Methods/PrivateInFinalClassRule/TraitWithProtectedMethod.php
similarity index 88%
rename from test/Fixture/Methods/PrivateInFinalClassRule/Success/TraitWithProtectedMethod.php
rename to test/Fixture/Methods/PrivateInFinalClassRule/TraitWithProtectedMethod.php
index dbcad750..df42e43d 100644
--- a/test/Fixture/Methods/PrivateInFinalClassRule/Success/TraitWithProtectedMethod.php
+++ b/test/Fixture/Methods/PrivateInFinalClassRule/TraitWithProtectedMethod.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\PrivateInFinalClassRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\PrivateInFinalClassRule;
 
 trait TraitWithProtectedMethod
 {
diff --git a/test/Fixture/Methods/PrivateInFinalClassRule/Failure/AnonymousClassWithProtectedMethod.php b/test/Fixture/Methods/PrivateInFinalClassRule/script.php
similarity index 80%
rename from test/Fixture/Methods/PrivateInFinalClassRule/Failure/AnonymousClassWithProtectedMethod.php
rename to test/Fixture/Methods/PrivateInFinalClassRule/script.php
index 7ab637b9..b79506c6 100644
--- a/test/Fixture/Methods/PrivateInFinalClassRule/Failure/AnonymousClassWithProtectedMethod.php
+++ b/test/Fixture/Methods/PrivateInFinalClassRule/script.php
@@ -2,9 +2,9 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\PrivateInFinalClassRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Methods\PrivateInFinalClassRule;
 
-new class() {
+$foo = new class() {
     protected function method(): void
     {
     }
diff --git a/test/Fixture/Statements/NoSwitchRule/Failure/switch-used-with-correct-case.php b/test/Fixture/Statements/NoSwitchRule/Failure/switch-used-with-correct-case.php
index 8bd0c3c0..fab8582a 100644
--- a/test/Fixture/Statements/NoSwitchRule/Failure/switch-used-with-correct-case.php
+++ b/test/Fixture/Statements/NoSwitchRule/Failure/switch-used-with-correct-case.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Expressions\NoSwitchRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Expressions\NoSwitchRule;
 
 switch ($foo) {
     case 'foo':
diff --git a/test/Fixture/Statements/NoSwitchRule/Failure/switch-used-with-incorrect-case.php b/test/Fixture/Statements/NoSwitchRule/Failure/switch-used-with-incorrect-case.php
index c6fc1677..7d81b94f 100644
--- a/test/Fixture/Statements/NoSwitchRule/Failure/switch-used-with-incorrect-case.php
+++ b/test/Fixture/Statements/NoSwitchRule/Failure/switch-used-with-incorrect-case.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Expressions\NoSwitchRule\Failure;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Expressions\NoSwitchRule;
 
 sWiTcH ($foo) {
     case 'foo':
diff --git a/test/Fixture/Statements/NoSwitchRule/Success/switch-not-used.php b/test/Fixture/Statements/NoSwitchRule/Success/switch-not-used.php
index 2aeb13a5..7de08123 100644
--- a/test/Fixture/Statements/NoSwitchRule/Success/switch-not-used.php
+++ b/test/Fixture/Statements/NoSwitchRule/Success/switch-not-used.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Ergebnis\PHPStan\Rules\Test\Fixture\Expressions\NoSwitchRule\Success;
+namespace Ergebnis\PHPStan\Rules\Test\Fixture\Expressions\NoSwitchRule;
 
 if ('foo' === $foo) {
     return 'It is foo!';
diff --git a/test/Integration/AbstractTestCase.php b/test/Integration/AbstractTestCase.php
index f37660c0..468c7ecf 100644
--- a/test/Integration/AbstractTestCase.php
+++ b/test/Integration/AbstractTestCase.php
@@ -17,6 +17,8 @@
 use PHPStan\Testing;
 
 /**
+ * @deprecated
+ *
  * @extends Testing\RuleTestCase<Rules\Rule>
  */
 abstract class AbstractTestCase extends Testing\RuleTestCase
diff --git a/test/Integration/Classes/FinalRuleTest.php b/test/Integration/Classes/FinalRuleTest.php
index 63ef1b72..542ffc41 100644
--- a/test/Integration/Classes/FinalRuleTest.php
+++ b/test/Integration/Classes/FinalRuleTest.php
@@ -15,121 +15,265 @@
 
 use Ergebnis\PHPStan\Rules\Classes;
 use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
 use PHPStan\Rules;
+use PHPStan\Testing;
 
 /**
  * @covers \Ergebnis\PHPStan\Rules\Classes\FinalRule
  *
  * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
+ *
+ * @extends Testing\RuleTestCase<Classes\FinalRule>
  */
-final class FinalRuleTest extends Test\Integration\AbstractTestCase
+final class FinalRuleTest extends Testing\RuleTestCase
 {
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'final-class' => __DIR__ . '/../../Fixture/Classes/FinalRule/Success/FinalClass.php',
-            'final-class-with-anonymous-class' => __DIR__ . '/../../Fixture/Classes/FinalRule/Success/FinalClassWithAnonymousClass.php',
-            'interface' => __DIR__ . '/../../Fixture/Classes/FinalRule/Success/ExampleInterface.php',
-            'non-final-class-with-entity-annotation-in-inline-doc-block' => __DIR__ . '/../../Fixture/Classes/FinalRule/Success/NonFinalClassWithEntityAnnotationInInlineDocBlock.php',
-            'non-final-class-with-entity-annotation-in-multi-line-doc-block' => __DIR__ . '/../../Fixture/Classes/FinalRule/Success/NonFinalClassWithEntityAnnotationInMultilineDocBlock.php',
-            'non-final-class-with-orm-entity-annotation-in-inline-doc-block' => __DIR__ . '/../../Fixture/Classes/FinalRule/Success/NonFinalClassWithOrmEntityAnnotationInInlineDocBlock.php',
-            'non-final-class-with-orm-entity-annotation-in-multi-line-doc-block' => __DIR__ . '/../../Fixture/Classes/FinalRule/Success/NonFinalClassWithOrmEntityAnnotationInMultilineDocBlock.php',
-            'non-final-class-with-orm-mapping-entity-annotation-in-inline-doc-block' => __DIR__ . '/../../Fixture/Classes/FinalRule/Success/NonFinalClassWithOrmMappingEntityAnnotationInInlineDocBlock.php',
-            'non-final-class-with-orm-mapping-entity-annotation-in-multi-line-doc-block' => __DIR__ . '/../../Fixture/Classes/FinalRule/Success/NonFinalClassWithOrmMappingEntityAnnotationInMultilineDocBlock.php',
-            'script-with-anonymous-class' => __DIR__ . '/../../Fixture/Classes/FinalRule/Success/anonymous-class.php',
-            'trait' => __DIR__ . '/../../Fixture/Classes/FinalRule/Success/ExampleTrait.php',
-            'trait-with-anonymous-class' => __DIR__ . '/../../Fixture/Classes/FinalRule/Success/TraitWithAnonymousClass.php',
-        ];
+    use Test\Util\Helper;
+    private bool $allowAbstractClasses;
 
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
+    /**
+     * @var list<class-string>
+     */
+    private array $classesNotRequiredToBeAbstractOrFinal;
 
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
+    public function testFinalRule(): void
     {
-        $paths = [
-            'abstract-class' => [
-                __DIR__ . '/../../Fixture/Classes/FinalRule/Failure/AbstractClass.php',
+        $this->allowAbstractClasses = false;
+        $this->classesNotRequiredToBeAbstractOrFinal = [];
+
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Classes/FinalRule'),
+            [
                 [
                     \sprintf(
                         'Class %s is not final.',
-                        Test\Fixture\Classes\FinalRule\Failure\AbstractClass::class,
+                        Test\Fixture\Classes\FinalRule\AbstractClass::class,
                     ),
                     7,
                 ],
-            ],
-            'neither-abstract-nor-final-class' => [
-                __DIR__ . '/../../Fixture/Classes/FinalRule/Failure/NeitherAbstractNorFinalClass.php',
                 [
                     \sprintf(
                         'Class %s is not final.',
-                        Test\Fixture\Classes\FinalRule\Failure\NeitherAbstractNorFinalClass::class,
+                        Test\Fixture\Classes\FinalRule\NeitherAbstractNorFinalClass::class,
+                    ),
+                    7,
+                ],
+                [
+                    \sprintf(
+                        'Class %s is not final.',
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithUnqualifiedDoctrineOrmMappingEntityAttribute::class,
+                    ),
+                    7,
+                ],
+                [
+                    \sprintf(
+                        'Class %s is not final.',
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithUnqualifiedEntityAttribute::class,
+                    ),
+                    7,
+                ],
+                [
+                    \sprintf(
+                        'Class %s is not final.',
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithUnqualifiedOrmEntityAttribute::class,
                     ),
                     7,
                 ],
-            ],
-            'non-final-class-without-entity-annotation-in-inline-doc-block' => [
-                __DIR__ . '/../../Fixture/Classes/FinalRule/Failure/NonFinalClassWithoutEntityAnnotationInInlineDocBlock.php',
                 [
                     \sprintf(
                         'Class %s is not final.',
-                        Test\Fixture\Classes\FinalRule\Failure\NonFinalClassWithoutEntityAnnotationInInlineDocBlock::class,
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithUnqualifiedOrmMappingEntityAttribute::class,
+                    ),
+                    7,
+                ],
+                [
+                    \sprintf(
+                        'Class %s is not final.',
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithoutEntityAnnotationInInlineDocBlock::class,
                     ),
                     8,
                 ],
-            ],
-            'non-final-class-without-entity-annotation-in-multi-line-doc-block' => [
-                __DIR__ . '/../../Fixture/Classes/FinalRule/Failure/NonFinalClassWithoutEntityAnnotationInMultilineDocBlock.php',
                 [
                     \sprintf(
                         'Class %s is not final.',
-                        Test\Fixture\Classes\FinalRule\Failure\NonFinalClassWithoutEntityAnnotationInMultilineDocBlock::class,
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithoutEntityAnnotationInMultilineDocBlock::class,
                     ),
                     12,
                 ],
-            ],
-            'non-final-class-without-orm-entity-annotation-in-inline-doc-block' => [
-                __DIR__ . '/../../Fixture/Classes/FinalRule/Failure/NonFinalClassWithoutOrmEntityAnnotationInInlineDocBlock.php',
                 [
                     \sprintf(
                         'Class %s is not final.',
-                        Test\Fixture\Classes\FinalRule\Failure\NonFinalClassWithoutOrmEntityAnnotationInInlineDocBlock::class,
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithoutOrmEntityAnnotationInInlineDocBlock::class,
                     ),
                     8,
                 ],
-            ],
-            'non-final-class-without-orm-entity-annotation-in-multi-line-doc-block' => [
-                __DIR__ . '/../../Fixture/Classes/FinalRule/Failure/NonFinalClassWithoutOrmEntityAnnotationInMultilineDocBlock.php',
                 [
                     \sprintf(
                         'Class %s is not final.',
-                        Test\Fixture\Classes\FinalRule\Failure\NonFinalClassWithoutOrmEntityAnnotationInMultilineDocBlock::class,
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithoutOrmEntityAnnotationInMultilineDocBlock::class,
                     ),
                     12,
                 ],
             ],
+        );
+    }
+
+    public function testFinalRuleWithAllowAbstractClasses(): void
+    {
+        $this->allowAbstractClasses = true;
+        $this->classesNotRequiredToBeAbstractOrFinal = [];
+
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Classes/FinalRule'),
+            [
+                [
+                    \sprintf(
+                        'Class %s is neither abstract nor final.',
+                        Test\Fixture\Classes\FinalRule\NeitherAbstractNorFinalClass::class,
+                    ),
+                    7,
+                ],
+                [
+                    \sprintf(
+                        'Class %s is neither abstract nor final.',
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithUnqualifiedDoctrineOrmMappingEntityAttribute::class,
+                    ),
+                    7,
+                ],
+                [
+                    \sprintf(
+                        'Class %s is neither abstract nor final.',
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithUnqualifiedEntityAttribute::class,
+                    ),
+                    7,
+                ],
+                [
+                    \sprintf(
+                        'Class %s is neither abstract nor final.',
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithUnqualifiedOrmEntityAttribute::class,
+                    ),
+                    7,
+                ],
+                [
+                    \sprintf(
+                        'Class %s is neither abstract nor final.',
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithUnqualifiedOrmMappingEntityAttribute::class,
+                    ),
+                    7,
+                ],
+                [
+                    \sprintf(
+                        'Class %s is neither abstract nor final.',
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithoutEntityAnnotationInInlineDocBlock::class,
+                    ),
+                    8,
+                ],
+                [
+                    \sprintf(
+                        'Class %s is neither abstract nor final.',
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithoutEntityAnnotationInMultilineDocBlock::class,
+                    ),
+                    12,
+                ],
+                [
+                    \sprintf(
+                        'Class %s is neither abstract nor final.',
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithoutOrmEntityAnnotationInInlineDocBlock::class,
+                    ),
+                    8,
+                ],
+                [
+                    \sprintf(
+                        'Class %s is neither abstract nor final.',
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithoutOrmEntityAnnotationInMultilineDocBlock::class,
+                    ),
+                    12,
+                ],
+            ],
+        );
+    }
+
+    public function testFinalRuleWithClassesNotRequiredToBeAbstractOrFinal(): void
+    {
+        $this->allowAbstractClasses = false;
+        $this->classesNotRequiredToBeAbstractOrFinal = [
+            Test\Fixture\Classes\FinalRule\NeitherAbstractNorFinalClass::class,
         ];
 
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Classes/FinalRule'),
+            [
+                [
+                    \sprintf(
+                        'Class %s is not final.',
+                        Test\Fixture\Classes\FinalRule\AbstractClass::class,
+                    ),
+                    7,
+                ],
+                [
+                    \sprintf(
+                        'Class %s is not final.',
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithUnqualifiedDoctrineOrmMappingEntityAttribute::class,
+                    ),
+                    7,
+                ],
+                [
+                    \sprintf(
+                        'Class %s is not final.',
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithUnqualifiedEntityAttribute::class,
+                    ),
+                    7,
+                ],
+                [
+                    \sprintf(
+                        'Class %s is not final.',
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithUnqualifiedOrmEntityAttribute::class,
+                    ),
+                    7,
+                ],
+                [
+                    \sprintf(
+                        'Class %s is not final.',
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithUnqualifiedOrmMappingEntityAttribute::class,
+                    ),
+                    7,
+                ],
+                [
+                    \sprintf(
+                        'Class %s is not final.',
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithoutEntityAnnotationInInlineDocBlock::class,
+                    ),
+                    8,
+                ],
+                [
+                    \sprintf(
+                        'Class %s is not final.',
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithoutEntityAnnotationInMultilineDocBlock::class,
+                    ),
+                    12,
+                ],
+                [
+                    \sprintf(
+                        'Class %s is not final.',
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithoutOrmEntityAnnotationInInlineDocBlock::class,
+                    ),
+                    8,
+                ],
+                [
+                    \sprintf(
+                        'Class %s is not final.',
+                        Test\Fixture\Classes\FinalRule\NonFinalClassWithoutOrmEntityAnnotationInMultilineDocBlock::class,
+                    ),
+                    12,
+                ],
+            ],
+        );
     }
 
-    /**
-     * @return Rules\Rule<Node\Stmt\Class_>
-     */
     protected function getRule(): Rules\Rule
     {
         return new Classes\FinalRule(
-            false,
-            [],
+            $this->allowAbstractClasses,
+            $this->classesNotRequiredToBeAbstractOrFinal,
         );
     }
 }
diff --git a/test/Integration/Classes/FinalRuleWithAbstractClassesAllowedTest.php b/test/Integration/Classes/FinalRuleWithAbstractClassesAllowedTest.php
deleted file mode 100644
index f2cc5544..00000000
--- a/test/Integration/Classes/FinalRuleWithAbstractClassesAllowedTest.php
+++ /dev/null
@@ -1,80 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-/**
- * Copyright (c) 2018-2025 Andreas Möller
- *
- * For the full copyright and license information, please view
- * the LICENSE.md file that was distributed with this source code.
- *
- * @see https://github.com/ergebnis/phpstan-rules
- */
-
-namespace Ergebnis\PHPStan\Rules\Test\Integration\Classes;
-
-use Ergebnis\PHPStan\Rules\Classes;
-use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
-use PHPStan\Rules;
-
-/**
- * @covers \Ergebnis\PHPStan\Rules\Classes\FinalRule
- *
- * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
- */
-final class FinalRuleWithAbstractClassesAllowedTest extends Test\Integration\AbstractTestCase
-{
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'abstract-class' => __DIR__ . '/../../Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Failure/AbstractClass.php',
-            'final-class' => __DIR__ . '/../../Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/FinalClass.php',
-            'final-class-with-anonymous-class' => __DIR__ . '/../../Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/FinalClassWithAnonymousClass.php',
-            'interface' => __DIR__ . '/../../Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/ExampleInterface.php',
-            'script-with-anonymous-class' => __DIR__ . '/../../Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/anonymous-class.php',
-            'trait' => __DIR__ . '/../../Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/ExampleTrait.php',
-            'trait-with-anonymous-class' => __DIR__ . '/../../Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Success/TraitWithAnonymousClass.php',
-        ];
-
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
-
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
-    {
-        $paths = [
-            'neither-abstract-nor-final-class' => [
-                __DIR__ . '/../../Fixture/Classes/FinalRuleWithAbstractClassesAllowed/Failure/NeitherAbstractNorFinalClass.php',
-                [
-                    \sprintf(
-                        'Class %s is neither abstract nor final.',
-                        Test\Fixture\Classes\FinalRuleWithAbstractClassesAllowed\Failure\NeitherAbstractNorFinalClass::class,
-                    ),
-                    7,
-                ],
-            ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
-    }
-
-    /**
-     * @return Rules\Rule<Node\Stmt\Class_>
-     */
-    protected function getRule(): Rules\Rule
-    {
-        return new Classes\FinalRule(
-            true,
-            [],
-        );
-    }
-}
diff --git a/test/Integration/Classes/FinalRuleWithAttributesTest.php b/test/Integration/Classes/FinalRuleWithAttributesTest.php
deleted file mode 100644
index abd42661..00000000
--- a/test/Integration/Classes/FinalRuleWithAttributesTest.php
+++ /dev/null
@@ -1,108 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-/**
- * Copyright (c) 2018-2025 Andreas Möller
- *
- * For the full copyright and license information, please view
- * the LICENSE.md file that was distributed with this source code.
- *
- * @see https://github.com/ergebnis/phpstan-rules
- */
-
-namespace Ergebnis\PHPStan\Rules\Test\Integration\Classes;
-
-use Ergebnis\PHPStan\Rules\Classes;
-use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
-use PHPStan\Rules;
-
-/**
- * @covers \Ergebnis\PHPStan\Rules\Classes\FinalRule
- *
- * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
- */
-final class FinalRuleWithAttributesTest extends Test\Integration\AbstractTestCase
-{
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'non-final-class-with-qualified-aliased-orm-mapping-entity-attribute' => __DIR__ . '/../../Fixture/Classes/FinalRuleWithAttributes/Success/NonFinalClassWithAliasedOrmEntityAttribute.php',
-            'non-final-class-with-qualified-doctrine-orm-mapping-entity-attribute' => __DIR__ . '/../../Fixture/Classes/FinalRuleWithAttributes/Success/NonFinalClassWithQualifiedDoctrineOrmMappingEntityAttribute.php',
-            'non-final-class-with-qualified-entity-attribute' => __DIR__ . '/../../Fixture/Classes/FinalRuleWithAttributes/Success/NonFinalClassWithQualifiedEntityAttribute.php',
-            'non-final-class-with-qualified-mapping-entity-attribute' => __DIR__ . '/../../Fixture/Classes/FinalRuleWithAttributes/Success/NonFinalClassWithQualifiedMappingEntityAttribute.php',
-            'non-final-class-with-qualified-orm-mapping-entity-attribute' => __DIR__ . '/../../Fixture/Classes/FinalRuleWithAttributes/Success/NonFinalClassWithQualifiedOrmMappingEntityAttribute.php',
-        ];
-
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
-
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
-    {
-        $paths = [
-            'non-final-class-with-unqualified-doctrine-orm-mapping-entity-attribute' => [
-                __DIR__ . '/../../Fixture/Classes/FinalRuleWithAttributes/Failure/NonFinalClassWithUnqualifiedDoctrineOrmMappingEntityAttribute.php',
-                [
-                    \sprintf(
-                        'Class %s is not final.',
-                        Test\Fixture\Classes\FinalRuleWithAttributes\Failure\NonFinalClassWithUnqualifiedDoctrineOrmMappingEntityAttribute::class,
-                    ),
-                    7,
-                ],
-            ],
-            'non-final-class-with-unqualified-entity-attribute' => [
-                __DIR__ . '/../../Fixture/Classes/FinalRuleWithAttributes/Failure/NonFinalClassWithUnqualifiedEntityAttribute.php',
-                [
-                    \sprintf(
-                        'Class %s is not final.',
-                        Test\Fixture\Classes\FinalRuleWithAttributes\Failure\NonFinalClassWithUnqualifiedEntityAttribute::class,
-                    ),
-                    7,
-                ],
-            ],
-            'non-final-class-with-unqualified-orm-entity-attribute' => [
-                __DIR__ . '/../../Fixture/Classes/FinalRuleWithAttributes/Failure/NonFinalClassWithUnqualifiedOrmEntityAttribute.php',
-                [
-                    \sprintf(
-                        'Class %s is not final.',
-                        Test\Fixture\Classes\FinalRuleWithAttributes\Failure\NonFinalClassWithUnqualifiedOrmEntityAttribute::class,
-                    ),
-                    7,
-                ],
-            ],
-            'non-final-class-with-unqualified-orm-mapping-entity-attribute' => [
-                __DIR__ . '/../../Fixture/Classes/FinalRuleWithAttributes/Failure/NonFinalClassWithUnqualifiedOrmMappingEntityAttribute.php',
-                [
-                    \sprintf(
-                        'Class %s is not final.',
-                        Test\Fixture\Classes\FinalRuleWithAttributes\Failure\NonFinalClassWithUnqualifiedOrmMappingEntityAttribute::class,
-                    ),
-                    7,
-                ],
-            ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
-    }
-
-    /**
-     * @return Rules\Rule<Node\Stmt\Class_>
-     */
-    protected function getRule(): Rules\Rule
-    {
-        return new Classes\FinalRule(
-            false,
-            [],
-        );
-    }
-}
diff --git a/test/Integration/Classes/FinalRuleWithExcludedClassNamesTest.php b/test/Integration/Classes/FinalRuleWithExcludedClassNamesTest.php
deleted file mode 100644
index 189f9268..00000000
--- a/test/Integration/Classes/FinalRuleWithExcludedClassNamesTest.php
+++ /dev/null
@@ -1,92 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-/**
- * Copyright (c) 2018-2025 Andreas Möller
- *
- * For the full copyright and license information, please view
- * the LICENSE.md file that was distributed with this source code.
- *
- * @see https://github.com/ergebnis/phpstan-rules
- */
-
-namespace Ergebnis\PHPStan\Rules\Test\Integration\Classes;
-
-use Ergebnis\PHPStan\Rules\Classes;
-use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
-use PHPStan\Rules;
-
-/**
- * @covers \Ergebnis\PHPStan\Rules\Classes\FinalRule
- *
- * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
- */
-final class FinalRuleWithExcludedClassNamesTest extends Test\Integration\AbstractTestCase
-{
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'class-neither-abstract-nor-final-but-whitelisted' => __DIR__ . '/../../Fixture/Classes/FinalRuleWithExcludedClassNames/Success/NeitherAbstractNorFinalClassButWhitelisted.php',
-            'final-class' => __DIR__ . '/../../Fixture/Classes/FinalRuleWithExcludedClassNames/Success/FinalClass.php',
-            'final-class-with-anonymous-class' => __DIR__ . '/../../Fixture/Classes/FinalRuleWithExcludedClassNames/Success/FinalClassWithAnonymousClass.php',
-            'interface' => __DIR__ . '/../../Fixture/Classes/FinalRuleWithExcludedClassNames/Success/ExampleInterface.php',
-            'script-with-anonymous-class' => __DIR__ . '/../../Fixture/Classes/FinalRuleWithExcludedClassNames/Success/anonymous-class.php',
-            'trait' => __DIR__ . '/../../Fixture/Classes/FinalRuleWithExcludedClassNames/Success/ExampleTrait.php',
-            'trait-with-anonymous-class' => __DIR__ . '/../../Fixture/Classes/FinalRuleWithExcludedClassNames/Success/TraitWithAnonymousClass.php',
-        ];
-
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
-
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
-    {
-        $paths = [
-            'abstract-class' => [
-                __DIR__ . '/../../Fixture/Classes/FinalRuleWithExcludedClassNames/Failure/AbstractClass.php',
-                [
-                    \sprintf(
-                        'Class %s is not final.',
-                        Test\Fixture\Classes\FinalRuleWithExcludedClassNames\Failure\AbstractClass::class,
-                    ),
-                    7,
-                ],
-            ],
-            'neither-abstract-nor-final-class' => [
-                __DIR__ . '/../../Fixture/Classes/FinalRuleWithExcludedClassNames/Failure/NeitherAbstractNorFinalClass.php',
-                [
-                    \sprintf(
-                        'Class %s is not final.',
-                        Test\Fixture\Classes\FinalRuleWithExcludedClassNames\Failure\NeitherAbstractNorFinalClass::class,
-                    ),
-                    7,
-                ],
-            ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
-    }
-
-    /**
-     * @return Rules\Rule<Node\Stmt\Class_>
-     */
-    protected function getRule(): Rules\Rule
-    {
-        return new Classes\FinalRule(
-            false,
-            [
-                Test\Fixture\Classes\FinalRuleWithExcludedClassNames\Success\NeitherAbstractNorFinalClassButWhitelisted::class,
-            ],
-        );
-    }
-}
diff --git a/test/Integration/Classes/NoExtendsRuleTest.php b/test/Integration/Classes/NoExtendsRuleTest.php
index 2b9a94de..9667bb40 100644
--- a/test/Integration/Classes/NoExtendsRuleTest.php
+++ b/test/Integration/Classes/NoExtendsRuleTest.php
@@ -15,72 +15,66 @@
 
 use Ergebnis\PHPStan\Rules\Classes;
 use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
 use PHPStan\Rules;
+use PHPStan\Testing;
 
 /**
  * @covers \Ergebnis\PHPStan\Rules\Classes\NoExtendsRule
  *
+ * @extends Testing\RuleTestCase<Classes\NoExtendsRule>
+ *
  * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
  */
-final class NoExtendsRuleTest extends Test\Integration\AbstractTestCase
+final class NoExtendsRuleTest extends Testing\RuleTestCase
 {
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'class' => __DIR__ . '/../../Fixture/Classes/NoExtendsRule/Success/ExampleClass.php',
-            'class-extending-php-unit-framework-test-case' => __DIR__ . '/../../Fixture/Classes/NoExtendsRule/Success/ClassExtendingPhpUnitFrameworkTestCase.php',
-            'interface' => __DIR__ . '/../../Fixture/Classes/NoExtendsRule/Success/ExampleInterface.php',
-            'interface-extending-other-interface' => __DIR__ . '/../../Fixture/Classes/NoExtendsRule/Success/InterfaceExtendingOtherInterface.php',
-            'script-with-anonymous-class' => __DIR__ . '/../../Fixture/Classes/NoExtendsRule/Success/anonymous-class.php',
-        ];
+    use Test\Util\Helper;
 
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
+    /**
+     * @var list<class-string>
+     */
+    private array $classesAllowedToBeExtended;
 
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
+    public function testNoExtendsRule(): void
     {
-        $paths = [
-            'class-extending-other-class' => [
-                __DIR__ . '/../../Fixture/Classes/NoExtendsRule/Failure/ClassExtendingOtherClass.php',
+        $this->classesAllowedToBeExtended = [];
+
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Classes/NoExtendsRule'),
+            [
                 [
                     \sprintf(
                         'Class "%s" is not allowed to extend "%s".',
-                        Test\Fixture\Classes\NoExtendsRule\Failure\ClassExtendingOtherClass::class,
-                        Test\Fixture\Classes\NoExtendsRule\Failure\OtherClass::class,
+                        Test\Fixture\Classes\NoExtendsRule\ClassExtendingOtherClass::class,
+                        Test\Fixture\Classes\NoExtendsRule\OtherClass::class,
                     ),
                     7,
                 ],
-            ],
-            'script-with-anonymous-class-extending-other-class' => [
-                __DIR__ . '/../../Fixture/Classes/NoExtendsRule/Failure/anonymous-class-extending-other-class.php',
                 [
                     \sprintf(
                         'Anonymous class is not allowed to extend "%s".',
-                        Test\Fixture\Classes\NoExtendsRule\Failure\OtherClass::class,
+                        Test\Fixture\Classes\NoExtendsRule\OtherClass::class,
                     ),
-                    7,
+                    10,
                 ],
             ],
+        );
+    }
+
+    public function testNoExtendsRuleWithClassesAllowedToBeExtended(): void
+    {
+        $this->classesAllowedToBeExtended = [
+            Test\Fixture\Classes\NoExtendsRule\OtherClass::class,
         ];
 
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Classes/NoExtendsRule'),
+            [
+            ],
+        );
     }
 
-    /**
-     * @return Rules\Rule<Node\Stmt\Class_>
-     */
     protected function getRule(): Rules\Rule
     {
-        return new Classes\NoExtendsRule([]);
+        return new Classes\NoExtendsRule($this->classesAllowedToBeExtended);
     }
 }
diff --git a/test/Integration/Classes/NoExtendsRuleWithClassesAllowedToBeExtendedTest.php b/test/Integration/Classes/NoExtendsRuleWithClassesAllowedToBeExtendedTest.php
deleted file mode 100644
index 8e412e59..00000000
--- a/test/Integration/Classes/NoExtendsRuleWithClassesAllowedToBeExtendedTest.php
+++ /dev/null
@@ -1,90 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-/**
- * Copyright (c) 2018-2025 Andreas Möller
- *
- * For the full copyright and license information, please view
- * the LICENSE.md file that was distributed with this source code.
- *
- * @see https://github.com/ergebnis/phpstan-rules
- */
-
-namespace Ergebnis\PHPStan\Rules\Test\Integration\Classes;
-
-use Ergebnis\PHPStan\Rules\Classes;
-use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
-use PHPStan\Rules;
-
-/**
- * @covers \Ergebnis\PHPStan\Rules\Classes\NoExtendsRule
- *
- * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
- */
-final class NoExtendsRuleWithClassesAllowedToBeExtendedTest extends Test\Integration\AbstractTestCase
-{
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'class' => __DIR__ . '/../../Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/ExampleClass.php',
-            'class-extending-class-allowed-to-be-extended' => __DIR__ . '/../../Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/ClassExtendingClassAllowedToBeExtended.php',
-            'class-extending-php-unit-framework-test-case' => __DIR__ . '/../../Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/ClassExtendingPhpUnitFrameworkTestCase.php',
-            'interface' => __DIR__ . '/../../Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/ExampleInterface.php',
-            'interface-extending-other-interface' => __DIR__ . '/../../Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/InterfaceExtendingOtherInterface.php',
-            'script-with-anonymous-class' => __DIR__ . '/../../Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/anonymous-class.php',
-            'script-with-anonymous-class-extending-class-allowed-to-be-extended' => __DIR__ . '/../../Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Success/anonymous-class-extending-class-allowed-to-be-extended.php',
-        ];
-
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
-
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
-    {
-        $paths = [
-            'class-extending-other-class' => [
-                __DIR__ . '/../../Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Failure/ClassExtendingOtherClass.php',
-                [
-                    \sprintf(
-                        'Class "%s" is not allowed to extend "%s".',
-                        Test\Fixture\Classes\NoExtendsRuleWithClassesAllowedToBeExtended\Failure\ClassExtendingOtherClass::class,
-                        Test\Fixture\Classes\NoExtendsRuleWithClassesAllowedToBeExtended\Failure\OtherClass::class,
-                    ),
-                    7,
-                ],
-            ],
-            'script-with-anonymous-class-extending-other-class' => [
-                __DIR__ . '/../../Fixture/Classes/NoExtendsRuleWithClassesAllowedToBeExtended/Failure/anonymous-class-extending-other-class.php',
-                [
-                    \sprintf(
-                        'Anonymous class is not allowed to extend "%s".',
-                        Test\Fixture\Classes\NoExtendsRuleWithClassesAllowedToBeExtended\Failure\OtherClass::class,
-                    ),
-                    7,
-                ],
-            ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
-    }
-
-    /**
-     * @return Rules\Rule<Node\Stmt\Class_>
-     */
-    protected function getRule(): Rules\Rule
-    {
-        return new Classes\NoExtendsRule([
-            Test\Fixture\Classes\NoExtendsRuleWithClassesAllowedToBeExtended\Success\ClassAllowedToBeExtended::class,
-        ]);
-    }
-}
diff --git a/test/Integration/Classes/PHPUnit/Framework/TestCaseWithSuffixRuleTest.php b/test/Integration/Classes/PHPUnit/Framework/TestCaseWithSuffixRuleTest.php
index 5715df39..206ebf87 100644
--- a/test/Integration/Classes/PHPUnit/Framework/TestCaseWithSuffixRuleTest.php
+++ b/test/Integration/Classes/PHPUnit/Framework/TestCaseWithSuffixRuleTest.php
@@ -15,70 +15,46 @@
 
 use Ergebnis\PHPStan\Rules\Classes;
 use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
 use PHPStan\Rules;
+use PHPStan\Testing;
 use PHPUnit\Framework;
 
 /**
  * @covers \Ergebnis\PHPStan\Rules\Classes\PHPUnit\Framework\TestCaseWithSuffixRule
  *
+ * @extends Testing\RuleTestCase<Classes\PHPUnit\Framework\TestCaseWithSuffixRule>
+ *
  * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
  */
-final class TestCaseWithSuffixRuleTest extends Test\Integration\AbstractTestCase
+final class TestCaseWithSuffixRuleTest extends Testing\RuleTestCase
 {
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'concrete-test-case-with-suffix-test' => __DIR__ . '/../../../../Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Success/ConcreteTestCaseWithSuffixTest.php',
-            'explicitly-abstract-test-case' => __DIR__ . '/../../../../Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Success/ExplicitlyAbstractTestCase.php',
-            'implicitly-abstract-test-case' => __DIR__ . '/../../../../Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Success/ExplicitlyAbstractTestCase.php',
-        ];
-
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
+    use Test\Util\Helper;
 
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
+    public function testTestCaseWithSuffixRule(): void
     {
-        $paths = [
-            'concrete-test-case-extending-abstract-test-case-without-test-suffix' => [
-                __DIR__ . '/../../../../Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Failure/ConcreteTestCaseExtendingAbstractTestCaseWithoutTestSuffix.php',
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../../../Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule'),
+            [
                 [
                     \sprintf(
                         'Class %s extends %s, is concrete, but does not have a Test suffix.',
-                        Test\Fixture\Classes\PHPUnit\Framework\TestCaseWithSuffixRule\Failure\ConcreteTestCaseExtendingAbstractTestCaseWithoutTestSuffix::class,
+                        Test\Fixture\Classes\PHPUnit\Framework\TestCaseWithSuffixRule\ConcreteTestCaseExtendingAbstractTestCaseWithoutSuffix::class,
                         Framework\TestCase::class,
                     ),
                     7,
                 ],
-            ],
-            'concrete-test-case-without-test-suffix' => [
-                __DIR__ . '/../../../../Fixture/Classes/PHPUnit/Framework/TestCaseWithSuffixRule/Failure/ConcreteTestCaseWithoutTestSuffix.php',
                 [
                     \sprintf(
                         'Class %s extends %s, is concrete, but does not have a Test suffix.',
-                        Test\Fixture\Classes\PHPUnit\Framework\TestCaseWithSuffixRule\Failure\ConcreteTestCaseWithoutTestSuffix::class,
+                        Test\Fixture\Classes\PHPUnit\Framework\TestCaseWithSuffixRule\ConcreteTestCaseWithoutSuffix::class,
                         Framework\TestCase::class,
                     ),
                     9,
                 ],
             ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
+        );
     }
 
-    /**
-     * @return Rules\Rule<Node\Stmt\Class_>
-     */
     protected function getRule(): Rules\Rule
     {
         return new Classes\PHPUnit\Framework\TestCaseWithSuffixRule(self::createReflectionProvider());
diff --git a/test/Integration/Closures/NoNullableReturnTypeDeclarationRuleTest.php b/test/Integration/Closures/NoNullableReturnTypeDeclarationRuleTest.php
index ae5837d2..a2e61cc9 100644
--- a/test/Integration/Closures/NoNullableReturnTypeDeclarationRuleTest.php
+++ b/test/Integration/Closures/NoNullableReturnTypeDeclarationRuleTest.php
@@ -15,60 +15,37 @@
 
 use Ergebnis\PHPStan\Rules\Closures;
 use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
 use PHPStan\Rules;
+use PHPStan\Testing;
 
 /**
  * @covers \Ergebnis\PHPStan\Rules\Closures\NoNullableReturnTypeDeclarationRule
  *
  * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
+ *
+ * @extends Testing\RuleTestCase<Closures\NoNullableReturnTypeDeclarationRule>
  */
-final class NoNullableReturnTypeDeclarationRuleTest extends Test\Integration\AbstractTestCase
+final class NoNullableReturnTypeDeclarationRuleTest extends Testing\RuleTestCase
 {
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'closure-with-return-type-declaration' => __DIR__ . '/../../Fixture/Closures/NoNullableReturnTypeDeclarationRule/Success/closure-with-return-type-declaration.php',
-            'closure-function-without-return-type-declaration' => __DIR__ . '/../../Fixture/Closures/NoNullableReturnTypeDeclarationRule/Success/closure-without-return-type-declaration.php',
-        ];
-
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
+    use Test\Util\Helper;
 
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
+    public function testNoNullableReturnTypeDeclarationRule(): void
     {
-        $paths = [
-            'closure-with-nullable-return-type-declaration' => [
-                __DIR__ . '/../../Fixture/Closures/NoNullableReturnTypeDeclarationRule/Failure/closure-with-nullable-return-type-declaration.php',
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Closures/NoNullableReturnTypeDeclarationRule'),
+            [
                 [
                     'Closure has a nullable return type declaration.',
-                    7,
+                    15,
                 ],
-            ],
-            'closure-with-nullable-union-return-type-declaration' => [
-                __DIR__ . '/../../Fixture/Closures/NoNullableReturnTypeDeclarationRule/Failure/closure-with-nullable-union-type-return-type-declaration.php',
                 [
                     'Closure has a nullable return type declaration.',
-                    7,
+                    19,
                 ],
             ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
+        );
     }
 
-    /**
-     * @return Rules\Rule<Node\Expr\Closure>
-     */
     protected function getRule(): Rules\Rule
     {
         return new Closures\NoNullableReturnTypeDeclarationRule();
diff --git a/test/Integration/Closures/NoParameterWithNullDefaultValueRuleTest.php b/test/Integration/Closures/NoParameterWithNullDefaultValueRuleTest.php
index 2eb841a0..9b3d4847 100644
--- a/test/Integration/Closures/NoParameterWithNullDefaultValueRuleTest.php
+++ b/test/Integration/Closures/NoParameterWithNullDefaultValueRuleTest.php
@@ -15,68 +15,41 @@
 
 use Ergebnis\PHPStan\Rules\Closures;
 use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
 use PHPStan\Rules;
+use PHPStan\Testing;
 
 /**
  * @covers \Ergebnis\PHPStan\Rules\Closures\NoParameterWithNullDefaultValueRule
  *
  * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
+ *
+ * @extends Testing\RuleTestCase<Closures\NoParameterWithNullDefaultValueRule>
  */
-final class NoParameterWithNullDefaultValueRuleTest extends Test\Integration\AbstractTestCase
+final class NoParameterWithNullDefaultValueRuleTest extends Testing\RuleTestCase
 {
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'closure-with-parameter-with-non-null-default-value' => __DIR__ . '/../../Fixture/Closures/NoParameterWithNullDefaultValueRule/Success/closure-with-parameter-with-non-null-default-value.php',
-            'closure-with-parameter-without-default-value' => __DIR__ . '/../../Fixture/Closures/NoParameterWithNullDefaultValueRule/Success/closure-with-parameter-without-default-value.php',
-            'closure-with-parameter-without-parameters' => __DIR__ . '/../../Fixture/Closures/NoParameterWithNullDefaultValueRule/Success/closure-without-parameters.php',
-        ];
-
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
+    use Test\Util\Helper;
 
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
+    public function testNoParameterWithNullDefaultValueRule(): void
     {
-        $paths = [
-            'closure-with-parameter-with-null-default-value' => [
-                __DIR__ . '/../../Fixture/Closures/NoParameterWithNullDefaultValueRule/Failure/closure-with-parameter-with-null-default-value.php',
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Closures/NoParameterWithNullDefaultValueRule'),
+            [
                 [
                     'Closure has parameter $bar with null as default value.',
-                    7,
+                    18,
                 ],
-            ],
-            'closure-with-parameter-with-root-namespace-referenced-null-default-value' => [
-                __DIR__ . '/../../Fixture/Closures/NoParameterWithNullDefaultValueRule/Failure/closure-with-parameter-with-root-namespace-referenced-null-default-value.php',
                 [
                     'Closure has parameter $bar with null as default value.',
-                    7,
+                    22,
                 ],
-            ],
-            'closure-with-parameter-with-wrongly-capitalized-null-default-value' => [
-                __DIR__ . '/../../Fixture/Closures/NoParameterWithNullDefaultValueRule/Failure/closure-with-parameter-with-wrongly-capitalized-null-default-value.php',
                 [
                     'Closure has parameter $bar with null as default value.',
-                    7,
+                    26,
                 ],
             ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
+        );
     }
 
-    /**
-     * @return Rules\Rule<Node\Expr\Closure>
-     */
     protected function getRule(): Rules\Rule
     {
         return new Closures\NoParameterWithNullDefaultValueRule();
diff --git a/test/Integration/Closures/NoParameterWithNullableTypeDeclarationRuleTest.php b/test/Integration/Closures/NoParameterWithNullableTypeDeclarationRuleTest.php
index 0432bf48..5e6f09dc 100644
--- a/test/Integration/Closures/NoParameterWithNullableTypeDeclarationRuleTest.php
+++ b/test/Integration/Closures/NoParameterWithNullableTypeDeclarationRuleTest.php
@@ -15,61 +15,37 @@
 
 use Ergebnis\PHPStan\Rules\Closures;
 use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
 use PHPStan\Rules;
+use PHPStan\Testing;
 
 /**
  * @covers \Ergebnis\PHPStan\Rules\Closures\NoParameterWithNullableTypeDeclarationRule
  *
  * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
+ *
+ * @extends Testing\RuleTestCase<Closures\NoParameterWithNullableTypeDeclarationRule>
  */
-final class NoParameterWithNullableTypeDeclarationRuleTest extends Test\Integration\AbstractTestCase
+final class NoParameterWithNullableTypeDeclarationRuleTest extends Testing\RuleTestCase
 {
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'closure-with-parameter-with-type-declaration' => __DIR__ . '/../../Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/Success/closure-with-parameter-with-type-declaration.php',
-            'closure-with-parameter-without-type-declaration' => __DIR__ . '/../../Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/Success/closure-with-parameter-without-type-declaration.php',
-            'closure-without-parameters' => __DIR__ . '/../../Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/Success/closure-without-parameters.php',
-        ];
-
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
+    use Test\Util\Helper;
 
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
+    public function testNoParameterWithNullableTypeDeclarationRule(): void
     {
-        $paths = [
-            'closure-with-parameter-with-nullable-type-declaration' => [
-                __DIR__ . '/../../Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/Failure/closure-with-parameter-with-nullable-type-declaration.php',
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Closures/NoParameterWithNullableTypeDeclarationRule'),
+            [
                 [
                     'Closure has parameter $bar with a nullable type declaration.',
-                    7,
+                    18,
                 ],
-            ],
-            'closure-with-parameter-with-nullable-union-type-declaration' => [
-                __DIR__ . '/../../Fixture/Closures/NoParameterWithNullableTypeDeclarationRule/Failure/closure-with-parameter-with-nullable-union-type-declaration.php',
                 [
                     'Closure has parameter $bar with a nullable type declaration.',
-                    7,
+                    22,
                 ],
             ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
+        );
     }
 
-    /**
-     * @return Rules\Rule<Node\Expr\Closure>
-     */
     protected function getRule(): Rules\Rule
     {
         return new Closures\NoParameterWithNullableTypeDeclarationRule();
diff --git a/test/Integration/Expressions/NoCompactRuleTest.php b/test/Integration/Expressions/NoCompactRuleTest.php
index 2b45ab2b..12c86069 100644
--- a/test/Integration/Expressions/NoCompactRuleTest.php
+++ b/test/Integration/Expressions/NoCompactRuleTest.php
@@ -15,66 +15,41 @@
 
 use Ergebnis\PHPStan\Rules\Expressions;
 use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
 use PHPStan\Rules;
+use PHPStan\Testing;
 
 /**
  * @covers \Ergebnis\PHPStan\Rules\Expressions\NoCompactRule
  *
  * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
+ *
+ * @extends Testing\RuleTestCase<Expressions\NoCompactRule>
  */
-final class NoCompactRuleTest extends Test\Integration\AbstractTestCase
+final class NoCompactRuleTest extends Testing\RuleTestCase
 {
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'compact-not-used' => __DIR__ . '/../../Fixture/Expressions/NoCompactRule/Success/compact-not-used.php',
-        ];
-
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
+    use Test\Util\Helper;
 
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
+    public function testNoCompactRule(): void
     {
-        $paths = [
-            'compact-used-with-alias' => [
-                __DIR__ . '/../../Fixture/Expressions/NoCompactRule/Failure/compact-used-with-alias.php',
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Expressions/NoCompactRule'),
+            [
                 [
                     'Function compact() should not be used.',
-                    12,
+                    22,
                 ],
-            ],
-            'compact-used-with-correct-case' => [
-                __DIR__ . '/../../Fixture/Expressions/NoCompactRule/Failure/compact-used-with-correct-case.php',
                 [
                     'Function compact() should not be used.',
-                    10,
+                    27,
                 ],
-            ],
-            'compact-used-with-incorrect-case' => [
-                __DIR__ . '/../../Fixture/Expressions/NoCompactRule/Failure/compact-used-with-incorrect-case.php',
                 [
                     'Function compact() should not be used.',
-                    10,
+                    32,
                 ],
             ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
+        );
     }
 
-    /**
-     * @return Rules\Rule<Node\Expr\FuncCall>
-     */
     protected function getRule(): Rules\Rule
     {
         return new Expressions\NoCompactRule();
diff --git a/test/Integration/Expressions/NoErrorSuppressionRuleTest.php b/test/Integration/Expressions/NoErrorSuppressionRuleTest.php
index 6dbbf326..0d6aef40 100644
--- a/test/Integration/Expressions/NoErrorSuppressionRuleTest.php
+++ b/test/Integration/Expressions/NoErrorSuppressionRuleTest.php
@@ -15,52 +15,33 @@
 
 use Ergebnis\PHPStan\Rules\Expressions;
 use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
 use PHPStan\Rules;
+use PHPStan\Testing;
 
 /**
  * @covers \Ergebnis\PHPStan\Rules\Expressions\NoErrorSuppressionRule
  *
  * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
+ *
+ * @extends Testing\RuleTestCase<Expressions\NoErrorSuppressionRule>
  */
-final class NoErrorSuppressionRuleTest extends Test\Integration\AbstractTestCase
+final class NoErrorSuppressionRuleTest extends Testing\RuleTestCase
 {
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'error-suppression-not-used' => __DIR__ . '/../../Fixture/Expressions/NoErrorSuppressionRule/Success/error-suppression-not-used.php',
-        ];
+    use Test\Util\Helper;
 
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
-
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
+    public function testNoErrorSuppressionRule(): void
     {
-        $paths = [
-            'error-suppression-used' => [
-                __DIR__ . '/../../Fixture/Expressions/NoErrorSuppressionRule/Failure/error-suppression-used.php',
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Expressions/NoErrorSuppressionRule'),
+            [
                 [
                     'Error suppression via "@" should not be used.',
-                    7,
+                    9,
                 ],
             ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
+        );
     }
 
-    /**
-     * @return Rules\Rule<Node\Expr\ErrorSuppress>
-     */
     protected function getRule(): Rules\Rule
     {
         return new Expressions\NoErrorSuppressionRule();
diff --git a/test/Integration/Expressions/NoEvalRuleTest.php b/test/Integration/Expressions/NoEvalRuleTest.php
index 70d0639c..28799d01 100644
--- a/test/Integration/Expressions/NoEvalRuleTest.php
+++ b/test/Integration/Expressions/NoEvalRuleTest.php
@@ -15,59 +15,37 @@
 
 use Ergebnis\PHPStan\Rules\Expressions;
 use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
 use PHPStan\Rules;
+use PHPStan\Testing;
 
 /**
  * @covers \Ergebnis\PHPStan\Rules\Expressions\NoEvalRule
  *
  * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
+ *
+ * @extends Testing\RuleTestCase<Expressions\NoEvalRule>
  */
-final class NoEvalRuleTest extends Test\Integration\AbstractTestCase
+final class NoEvalRuleTest extends Testing\RuleTestCase
 {
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'eval-not-used' => __DIR__ . '/../../Fixture/Expressions/NoEvalRule/Success/eval-not-used.php',
-        ];
-
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
+    use Test\Util\Helper;
 
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
+    public function testNoEvalRule(): void
     {
-        $paths = [
-            'eval-used-with-correct-case' => [
-                __DIR__ . '/../../Fixture/Expressions/NoEvalRule/Failure/eval-used-with-correct-case.php',
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Expressions/NoEvalRule'),
+            [
                 [
                     'Language construct eval() should not be used.',
-                    7,
+                    13,
                 ],
-            ],
-            'eval-used-with-incorrect-case' => [
-                __DIR__ . '/../../Fixture/Expressions/NoEvalRule/Failure/eval-used-with-incorrect-case.php',
                 [
                     'Language construct eval() should not be used.',
-                    7,
+                    15,
                 ],
             ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
+        );
     }
 
-    /**
-     * @return Rules\Rule<Node\Expr\Eval_>
-     */
     protected function getRule(): Rules\Rule
     {
         return new Expressions\NoEvalRule();
diff --git a/test/Integration/Expressions/NoIssetRuleTest.php b/test/Integration/Expressions/NoIssetRuleTest.php
index 24d420e3..3052860c 100644
--- a/test/Integration/Expressions/NoIssetRuleTest.php
+++ b/test/Integration/Expressions/NoIssetRuleTest.php
@@ -15,59 +15,37 @@
 
 use Ergebnis\PHPStan\Rules\Expressions;
 use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
 use PHPStan\Rules;
+use PHPStan\Testing;
 
 /**
  * @covers \Ergebnis\PHPStan\Rules\Expressions\NoIssetRule
  *
  * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
+ *
+ * @extends Testing\RuleTestCase<Expressions\NoIssetRule>
  */
-final class NoIssetRuleTest extends Test\Integration\AbstractTestCase
+final class NoIssetRuleTest extends Testing\RuleTestCase
 {
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'isset-not-used' => __DIR__ . '/../../Fixture/Expressions/NoIssetRule/Success/isset-not-used.php',
-        ];
-
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
+    use Test\Util\Helper;
 
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
+    public function testNoIssetRule(): void
     {
-        $paths = [
-            'isset-used-with-correct-case' => [
-                __DIR__ . '/../../Fixture/Expressions/NoIssetRule/Failure/isset-used-with-correct-case.php',
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Expressions/NoIssetRule'),
+            [
                 [
                     'Language construct isset() should not be used.',
-                    7,
+                    16,
                 ],
-            ],
-            'isset-used-with-incorrect-case' => [
-                __DIR__ . '/../../Fixture/Expressions/NoIssetRule/Failure/isset-used-with-incorrect-case.php',
                 [
                     'Language construct isset() should not be used.',
-                    7,
+                    20,
                 ],
             ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
+        );
     }
 
-    /**
-     * @return Rules\Rule<Node\Expr\Isset_>
-     */
     protected function getRule(): Rules\Rule
     {
         return new Expressions\NoIssetRule();
diff --git a/test/Integration/Files/DeclareStrictTypesRuleTest.php b/test/Integration/Files/DeclareStrictTypesRuleTest.php
index 92d6ffd8..449d4700 100644
--- a/test/Integration/Files/DeclareStrictTypesRuleTest.php
+++ b/test/Integration/Files/DeclareStrictTypesRuleTest.php
@@ -15,163 +15,89 @@
 
 use Ergebnis\PHPStan\Rules\Files;
 use Ergebnis\PHPStan\Rules\Test;
-use PHPStan\Node;
 use PHPStan\Rules;
+use PHPStan\Testing;
 
 /**
  * @covers \Ergebnis\PHPStan\Rules\Files\DeclareStrictTypesRule
  *
  * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
+ *
+ * @extends Testing\RuleTestCase<Files\DeclareStrictTypesRule>
  */
-final class DeclareStrictTypesRuleTest extends Test\Integration\AbstractTestCase
+final class DeclareStrictTypesRuleTest extends Testing\RuleTestCase
 {
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'file-empty' => __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Success/file-empty.php',
-            'file-with-comment-and-declare-strict-types-on' => __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Success/file-with-comment-and-declare-strict-types-on.php',
-            'file-with-comment-and-declare-strict-types-on-and-invalid-casing' => __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Success/file-with-comment-and-declare-strict-types-on-and-invalid-casing.php',
-            'file-with-comment-and-declare-strict-types-on-and-multiple-declares' => __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Success/file-with-comment-and-declare-strict-types-on-and-multiple-declares.php',
-            'file-with-comment-and-declare-strict-types-on-and-namespace-declaration' => __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Success/file-with-comment-and-declare-strict-types-on-and-namespace-declaration.php',
-            'file-with-declare-strict-types-on' => __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Success/file-with-declare-strict-types-on.php',
-            'file-with-declare-strict-types-on-and-invalid-casing' => __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Success/file-with-declare-strict-types-on-and-invalid-casing.php',
-            'file-with-declare-strict-types-on-and-multiple-declares' => __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Success/file-with-declare-strict-types-on-and-multiple-declares.php',
-            'file-with-declare-strict-types-on-and-namespace-declaration' => __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Success/file-with-declare-strict-types-on-and-namespace-declaration.php',
-            'file-with-doc-block-and-declare-strict-types-on' => __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Success/file-with-doc-block-and-declare-strict-types-on.php',
-            'file-with-doc-block-and-declare-strict-types-on-and-invalid-casing' => __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Success/file-with-doc-block-and-declare-strict-types-on-and-invalid-casing.php',
-            'file-with-doc-block-and-declare-strict-types-on-and-multiple-declares' => __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Success/file-with-doc-block-and-declare-strict-types-on-and-multiple-declares.php',
-            'file-with-doc-block-and-declare-strict-types-on-and-namespace-declaration' => __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Success/file-with-doc-block-and-declare-strict-types-on-and-namespace-declaration.php',
-            'file-with-shebang-and-declare-strict-types-on' => __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Success/file-with-shebang-and-declare-strict-types-on.php',
-        ];
+    use Test\Util\Helper;
 
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
-
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
+    public function testDeclareStrictTypesRule(): void
     {
-        $paths = [
-            'file-with-comment-and-declare-strict-types-off' => [
-                __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Failure/file-with-comment-and-declare-strict-types-off.php',
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule'),
+            [
                 [
                     'File is missing a "declare(strict_types=1)" declaration.',
                     5,
                 ],
-            ],
-            'file-with-comment-and-declare-strict-types-off-and-invalid-casing' => [
-                __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Failure/file-with-comment-and-declare-strict-types-off-and-invalid-casing.php',
                 [
                     'File is missing a "declare(strict_types=1)" declaration.',
                     5,
                 ],
-            ],
-            'file-with-comment-and-declare-strict-types-off-and-multiple-declares' => [
-                __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Failure/file-with-comment-and-declare-strict-types-off-and-multiple-declares.php',
                 [
                     'File is missing a "declare(strict_types=1)" declaration.',
                     5,
                 ],
-            ],
-            'file-with-declare-strict-types-off' => [
-                __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Failure/file-with-declare-strict-types-off.php',
                 [
                     'File is missing a "declare(strict_types=1)" declaration.',
                     3,
                 ],
-            ],
-            'file-with-declare-strict-types-off-and-invalid-casing' => [
-                __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Failure/file-with-declare-strict-types-off-and-invalid-casing.php',
                 [
                     'File is missing a "declare(strict_types=1)" declaration.',
                     3,
                 ],
-            ],
-            'file-with-declare-strict-types-off-and-multiple-declares' => [
-                __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Failure/file-with-declare-strict-types-off-and-multiple-declares.php',
                 [
                     'File is missing a "declare(strict_types=1)" declaration.',
                     3,
                 ],
-            ],
-            'file-with-declare-ticks' => [
-                __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Failure/file-with-declare-ticks.php',
                 [
                     'File is missing a "declare(strict_types=1)" declaration.',
                     3,
                 ],
-            ],
-            'file-with-doc-block-and-declare-strict-types-off' => [
-                __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Failure/file-with-doc-block-and-declare-strict-types-off.php',
                 [
                     'File is missing a "declare(strict_types=1)" declaration.',
                     7,
                 ],
-            ],
-            'file-with-doc-block-and-declare-strict-types-off-and-invalid-casing' => [
-                __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Failure/file-with-doc-block-and-declare-strict-types-off-and-invalid-casing.php',
                 [
                     'File is missing a "declare(strict_types=1)" declaration.',
                     7,
                 ],
-            ],
-            'file-with-doc-block-and-declare-strict-types-off-and-multiple-declares' => [
-                __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Failure/file-with-doc-block-and-declare-strict-types-off-and-multiple-declares.php',
                 [
                     'File is missing a "declare(strict_types=1)" declaration.',
                     7,
                 ],
-            ],
-            'file-with-shebang-and-another-one-text-line-before-opening-tag' => [
-                __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Failure/file-with-shebang-and-another-one-text-line-before-opening-tag.php',
                 [
                     'File is missing a "declare(strict_types=1)" declaration.',
                     1,
                 ],
-            ],
-            'file-with-shebang-and-declare-strict-types-off' => [
-                __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Failure/file-with-shebang-and-declare-strict-types-off.php',
                 [
                     'File is missing a "declare(strict_types=1)" declaration.',
                     1,
                 ],
-            ],
-            'file-with-text-before-opening-tag' => [
-                __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Failure/file-with-text-before-opening-tag.php',
                 [
                     'File is missing a "declare(strict_types=1)" declaration.',
                     1,
                 ],
-            ],
-            'file-without-declare-strict-types-and-namespace-declaration' => [
-                __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Failure/file-without-declare-strict-types-and-namespace-declaration.php',
                 [
                     'File is missing a "declare(strict_types=1)" declaration.',
                     3,
                 ],
-            ],
-            'file-without-declare-strict-types' => [
-                __DIR__ . '/../../Fixture/Files/DeclareStrictTypesRule/Failure/file-without-declare-strict-types.php',
                 [
                     'File is missing a "declare(strict_types=1)" declaration.',
                     3,
                 ],
             ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
+        );
     }
 
-    /**
-     * @return Rules\Rule<Node\FileNode>
-     */
     protected function getRule(): Rules\Rule
     {
         return new Files\DeclareStrictTypesRule();
diff --git a/test/Integration/Functions/NoNullableReturnTypeDeclarationRuleTest.php b/test/Integration/Functions/NoNullableReturnTypeDeclarationRuleTest.php
index 64fc5017..c1d94b7e 100644
--- a/test/Integration/Functions/NoNullableReturnTypeDeclarationRuleTest.php
+++ b/test/Integration/Functions/NoNullableReturnTypeDeclarationRuleTest.php
@@ -15,60 +15,37 @@
 
 use Ergebnis\PHPStan\Rules\Functions;
 use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
 use PHPStan\Rules;
+use PHPStan\Testing;
 
 /**
  * @covers \Ergebnis\PHPStan\Rules\Functions\NoNullableReturnTypeDeclarationRule
  *
  * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
+ *
+ * @extends Testing\RuleTestCase<Functions\NoNullableReturnTypeDeclarationRule>
  */
-final class NoNullableReturnTypeDeclarationRuleTest extends Test\Integration\AbstractTestCase
+final class NoNullableReturnTypeDeclarationRuleTest extends Testing\RuleTestCase
 {
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'function-with-return-type-declaration' => __DIR__ . '/../../Fixture/Functions/NoNullableReturnTypeDeclarationRule/Success/function-with-return-type-declaration.php',
-            'function-without-return-type-declaration' => __DIR__ . '/../../Fixture/Functions/NoNullableReturnTypeDeclarationRule/Success/function-without-return-type-declaration.php',
-        ];
-
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
+    use Test\Util\Helper;
 
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
+    public function testNoNullableReturnTypeDeclarationRule(): void
     {
-        $paths = [
-            'function-with-nullable-return-type-declaration' => [
-                __DIR__ . '/../../Fixture/Functions/NoNullableReturnTypeDeclarationRule/Failure/function-with-nullable-return-type-declaration.php',
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Functions/NoNullableReturnTypeDeclarationRule'),
+            [
                 [
-                    'Function Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoNullableReturnTypeDeclarationRule\Failure\foo() has a nullable return type declaration.',
-                    7,
+                    'Function Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoNullableReturnTypeDeclarationRule\baz() has a nullable return type declaration.',
+                    17,
                 ],
-            ],
-            'function-with-nullable-union-return-type-declaration' => [
-                __DIR__ . '/../../Fixture/Functions/NoNullableReturnTypeDeclarationRule/Failure/function-with-nullable-union-return-type-declaration.php',
                 [
-                    'Function Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoNullableReturnTypeDeclarationRule\Failure\foo() has a nullable return type declaration.',
-                    7,
+                    'Function Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoNullableReturnTypeDeclarationRule\quux() has a nullable return type declaration.',
+                    22,
                 ],
             ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
+        );
     }
 
-    /**
-     * @return Rules\Rule<Node\Stmt\Function_>
-     */
     protected function getRule(): Rules\Rule
     {
         return new Functions\NoNullableReturnTypeDeclarationRule();
diff --git a/test/Integration/Functions/NoParameterWithNullDefaultValueRuleTest.php b/test/Integration/Functions/NoParameterWithNullDefaultValueRuleTest.php
index 84f2dc40..62753184 100644
--- a/test/Integration/Functions/NoParameterWithNullDefaultValueRuleTest.php
+++ b/test/Integration/Functions/NoParameterWithNullDefaultValueRuleTest.php
@@ -15,68 +15,41 @@
 
 use Ergebnis\PHPStan\Rules\Functions;
 use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
 use PHPStan\Rules;
+use PHPStan\Testing;
 
 /**
  * @covers \Ergebnis\PHPStan\Rules\Functions\NoParameterWithNullDefaultValueRule
  *
  * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
+ *
+ * @extends Testing\RuleTestCase<Functions\NoParameterWithNullDefaultValueRule>
  */
-final class NoParameterWithNullDefaultValueRuleTest extends Test\Integration\AbstractTestCase
+final class NoParameterWithNullDefaultValueRuleTest extends Testing\RuleTestCase
 {
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'function-with-parameter-with-non-null-default-value' => __DIR__ . '/../../Fixture/Functions/NoParameterWithNullDefaultValueRule/Success/function-with-parameter-with-non-null-default-value.php',
-            'function-with-parameter-without-default-value' => __DIR__ . '/../../Fixture/Functions/NoParameterWithNullDefaultValueRule/Success/function-with-parameter-without-default-value.php',
-            'function-without-parameters' => __DIR__ . '/../../Fixture/Functions/NoParameterWithNullDefaultValueRule/Success/function-without-parameters.php',
-        ];
-
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
+    use Test\Util\Helper;
 
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
+    public function testNoParameterWithNullDefaultValueRule(): void
     {
-        $paths = [
-            'function-with-parameter-with-null-default-value' => [
-                __DIR__ . '/../../Fixture/Functions/NoParameterWithNullDefaultValueRule/Failure/function-with-parameter-with-null-default-value.php',
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Functions/NoParameterWithNullDefaultValueRule'),
+            [
                 [
-                    'Function Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullDefaultValueRule\Failure\foo() has parameter $bar with null as default value.',
-                    7,
+                    'Function Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullDefaultValueRule\qux() has parameter $bar with null as default value.',
+                    21,
                 ],
-            ],
-            'function-with-parameter-with-root-namespace-referenced-null-default-value' => [
-                __DIR__ . '/../../Fixture/Functions/NoParameterWithNullDefaultValueRule/Failure/function-with-parameter-with-root-namespace-referenced-null-default-value.php',
                 [
-                    'Function Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullDefaultValueRule\Failure\foo() has parameter $bar with null as default value.',
-                    7,
+                    'Function Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullDefaultValueRule\quux() has parameter $bar with null as default value.',
+                    26,
                 ],
-            ],
-            'function-with-parameter-with-wrongly-capitalized-null-default-value' => [
-                __DIR__ . '/../../Fixture/Functions/NoParameterWithNullDefaultValueRule/Failure/function-with-parameter-with-wrongly-capitalized-null-default-value.php',
                 [
-                    'Function Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullDefaultValueRule\Failure\foo() has parameter $bar with null as default value.',
-                    7,
+                    'Function Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullDefaultValueRule\quz() has parameter $bar with null as default value.',
+                    31,
                 ],
             ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
+        );
     }
 
-    /**
-     * @return Rules\Rule<Node\Stmt\Function_>
-     */
     protected function getRule(): Rules\Rule
     {
         return new Functions\NoParameterWithNullDefaultValueRule();
diff --git a/test/Integration/Functions/NoParameterWithNullableTypeDeclarationRuleTest.php b/test/Integration/Functions/NoParameterWithNullableTypeDeclarationRuleTest.php
index 65d7c613..031ab514 100644
--- a/test/Integration/Functions/NoParameterWithNullableTypeDeclarationRuleTest.php
+++ b/test/Integration/Functions/NoParameterWithNullableTypeDeclarationRuleTest.php
@@ -15,61 +15,37 @@
 
 use Ergebnis\PHPStan\Rules\Functions;
 use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
 use PHPStan\Rules;
+use PHPStan\Testing;
 
 /**
  * @covers \Ergebnis\PHPStan\Rules\Functions\NoParameterWithNullableTypeDeclarationRule
  *
  * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
+ *
+ * @extends Testing\RuleTestCase<Functions\NoParameterWithNullableTypeDeclarationRule>
  */
-final class NoParameterWithNullableTypeDeclarationRuleTest extends Test\Integration\AbstractTestCase
+final class NoParameterWithNullableTypeDeclarationRuleTest extends Testing\RuleTestCase
 {
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'function-with-parameter-with-type-declaration' => __DIR__ . '/../../Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/Success/function-with-parameter-with-type-declaration.php',
-            'function-with-parameter-without-type-declaration' => __DIR__ . '/../../Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/Success/function-with-parameter-without-type-declaration.php',
-            'function-without-parameters' => __DIR__ . '/../../Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/Success/function-without-parameters.php',
-        ];
-
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
+    use Test\Util\Helper;
 
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
+    public function testNoParameterWithNullableTypeDeclarationRule(): void
     {
-        $paths = [
-            'function-with-parameter-with-nullable-type-declaration' => [
-                __DIR__ . '/../../Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/Failure/function-with-parameter-with-nullable-type-declaration.php',
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Functions/NoParameterWithNullableTypeDeclarationRule'),
+            [
                 [
-                    'Function Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullableTypeDeclarationRule\Failure\foo() has parameter $bar with a nullable type declaration.',
-                    7,
+                    'Function Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullableTypeDeclarationRule\qux() has parameter $bar with a nullable type declaration.',
+                    21,
                 ],
-            ],
-            'function-with-parameter-with-nullable-union-type-declaration' => [
-                __DIR__ . '/../../Fixture/Functions/NoParameterWithNullableTypeDeclarationRule/Failure/function-with-parameter-with-nullable-union-type-declaration.php',
                 [
-                    'Function Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullableTypeDeclarationRule\Failure\foo() has parameter $bar with a nullable type declaration.',
-                    7,
+                    'Function Ergebnis\PHPStan\Rules\Test\Fixture\Functions\NoParameterWithNullableTypeDeclarationRule\quux() has parameter $bar with a nullable type declaration.',
+                    26,
                 ],
             ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
+        );
     }
 
-    /**
-     * @return Rules\Rule<Node\Stmt\Function_>
-     */
     protected function getRule(): Rules\Rule
     {
         return new Functions\NoParameterWithNullableTypeDeclarationRule();
diff --git a/test/Integration/Methods/FinalInAbstractClassRuleTest.php b/test/Integration/Methods/FinalInAbstractClassRuleTest.php
index 40525595..30bf976e 100644
--- a/test/Integration/Methods/FinalInAbstractClassRuleTest.php
+++ b/test/Integration/Methods/FinalInAbstractClassRuleTest.php
@@ -15,98 +15,43 @@
 
 use Ergebnis\PHPStan\Rules\Methods;
 use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
 use PHPStan\Rules;
+use PHPStan\Testing;
 
 /**
  * @covers \Ergebnis\PHPStan\Rules\Methods\FinalInAbstractClassRule
  *
  * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
+ *
+ * @extends Testing\RuleTestCase<Methods\FinalInAbstractClassRule>
  */
-final class FinalInAbstractClassRuleTest extends Test\Integration\AbstractTestCase
+final class FinalInAbstractClassRuleTest extends Testing\RuleTestCase
 {
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'abstract-class-with-abstract-method' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithAbstractMethod.php',
-            'abstract-class-with-final-protected-method' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithFinalProtectedMethod.php',
-            'abstract-class-with-final-public-method' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithFinalPublicMethod.php',
-            'abstract-class-with-non-final-constructor' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithNonFinalConstructor.php',
-            'abstract-class-with-private-method' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPrivateMethod.php',
-            'abstract-class-with-protected-method-and-embeddable-annotation-in-inline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEmbeddableAnnotationInInlineDocBlock.php',
-            'abstract-class-with-protected-method-and-embeddable-annotation-in-multiline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEmbeddableAnnotationInMultilineDocBlock.php',
-            'abstract-class-with-protected-method-and-embeddable-attribute' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEmbeddableAttribute.php',
-            'abstract-class-with-protected-method-and-entity-annotation-in-inline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEntityAnnotationInInlineDocBlock.php',
-            'abstract-class-with-protected-method-and-entity-annotation-in-multiline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEntityAnnotationInMultilineDocBlock.php',
-            'abstract-class-with-protected-method-and-entity-attribute' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndEntityAttribute.php',
-            'abstract-class-with-protected-method-and-orm-embeddable-annotation-in-inline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmEmbeddableAnnotationInMultilineDocBlock.php',
-            'abstract-class-with-protected-method-and-orm-embeddable-annotation-in-multiline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmEmbeddableAnnotationInInlineDocBlock.php',
-            'abstract-class-with-protected-method-and-orm-entity-annotation-in-inline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmEntityAnnotationInMultilineDocBlock.php',
-            'abstract-class-with-protected-method-and-orm-entity-annotation-in-multiline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmEntityAnnotationInInlineDocBlock.php',
-            'abstract-class-with-protected-method-and-orm-mapping-embeddable-annotation-in-inline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmMappingEmbeddableAnnotationInInlineDocBlock.php',
-            'abstract-class-with-protected-method-and-orm-mapping-embeddable-annotation-in-multiline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmMappingEmbeddableAnnotationInMultilineDocBlock.php',
-            'abstract-class-with-protected-method-and-orm-mapping-entity-annotation-in-inline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmMappingEntityAnnotationInInlineDocBlock.php',
-            'abstract-class-with-protected-method-and-orm-mapping-entity-annotation-in-multiline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithProtectedMethodAndOrmMappingEntityAnnotationInMultilineDocBlock.php',
-            'abstract-class-with-public-method-and-embeddable-annotation-in-inline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEmbeddableAnnotationInInlineDocBlock.php',
-            'abstract-class-with-public-method-and-embeddable-annotation-in-multiline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEmbeddableAnnotationInMultilineDocBlock.php',
-            'abstract-class-with-public-method-and-embeddable-attribute' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEmbeddableAttribute.php',
-            'abstract-class-with-public-method-and-entity-annotation-in-inline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEntityAnnotationInInlineDocBlock.php',
-            'abstract-class-with-public-method-and-entity-annotation-in-multiline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEntityAnnotationInMultilineDocBlock.php',
-            'abstract-class-with-public-method-and-entity-attribute' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndEntityAttribute.php',
-            'abstract-class-with-public-method-and-orm-embeddable-annotation-in-inline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmEmbeddableAnnotationInMultilineDocBlock.php',
-            'abstract-class-with-public-method-and-orm-embeddable-annotation-in-multiline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmEmbeddableAnnotationInInlineDocBlock.php',
-            'abstract-class-with-public-method-and-orm-entity-annotation-in-inline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmEntityAnnotationInMultilineDocBlock.php',
-            'abstract-class-with-public-method-and-orm-entity-annotation-in-multiline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmEntityAnnotationInInlineDocBlock.php',
-            'abstract-class-with-public-method-and-orm-mapping-embeddable-annotation-in-inline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmMappingEmbeddableAnnotationInInlineDocBlock.php',
-            'abstract-class-with-public-method-and-orm-mapping-embeddable-annotation-in-multiline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmMappingEmbeddableAnnotationInMultilineDocBlock.php',
-            'abstract-class-with-public-method-and-orm-mapping-entity-annotation-in-inline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmMappingEntityAnnotationInInlineDocBlock.php',
-            'abstract-class-with-public-method-and-orm-mapping-entity-annotation-in-multiline-doc-block' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/AbstractClassWithPublicMethodAndOrmMappingEntityAnnotationInMultilineDocBlock.php',
-            'interface-with-public-method' => __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Success/InterfaceWithPublicMethod.php',
-        ];
-
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
+    use Test\Util\Helper;
 
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
+    public function testFinalInAbstractClassRule(): void
     {
-        $paths = [
-            'abstract-class-with-protected-method' => [
-                __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Failure/AbstractClassWithProtectedMethod.php',
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule'),
+            [
                 [
                     \sprintf(
                         'Method %s::method() is not final, but since the containing class is abstract, it should be.',
-                        Test\Fixture\Methods\FinalInAbstractClassRule\Failure\AbstractClassWithProtectedMethod::class,
+                        Test\Fixture\Methods\FinalInAbstractClassRule\AbstractClassWithProtectedMethod::class,
                     ),
                     9,
                 ],
-            ],
-            'abstract-class-with-public-method' => [
-                __DIR__ . '/../../Fixture/Methods/FinalInAbstractClassRule/Failure/AbstractClassWithPublicMethod.php',
                 [
                     \sprintf(
                         'Method %s::method() is not final, but since the containing class is abstract, it should be.',
-                        Test\Fixture\Methods\FinalInAbstractClassRule\Failure\AbstractClassWithPublicMethod::class,
+                        Test\Fixture\Methods\FinalInAbstractClassRule\AbstractClassWithPublicMethod::class,
                     ),
                     9,
                 ],
             ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
+        );
     }
 
-    /**
-     * @return Rules\Rule<Node\Stmt\ClassMethod>
-     */
     protected function getRule(): Rules\Rule
     {
         return new Methods\FinalInAbstractClassRule();
diff --git a/test/Integration/Methods/NoConstructorParameterWithDefaultValueRuleTest.php b/test/Integration/Methods/NoConstructorParameterWithDefaultValueRuleTest.php
index 59687e38..6edbfcef 100644
--- a/test/Integration/Methods/NoConstructorParameterWithDefaultValueRuleTest.php
+++ b/test/Integration/Methods/NoConstructorParameterWithDefaultValueRuleTest.php
@@ -15,90 +15,51 @@
 
 use Ergebnis\PHPStan\Rules\Methods;
 use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
 use PHPStan\Rules;
+use PHPStan\Testing;
 
 /**
  * @covers \Ergebnis\PHPStan\Rules\Methods\NoConstructorParameterWithDefaultValueRule
  *
  * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
+ *
+ * @extends Testing\RuleTestCase<Methods\NoConstructorParameterWithDefaultValueRule>
  */
-final class NoConstructorParameterWithDefaultValueRuleTest extends Test\Integration\AbstractTestCase
+final class NoConstructorParameterWithDefaultValueRuleTest extends Testing\RuleTestCase
 {
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'constructor-in-anonymous-class-with-parameter-without-default-value' => __DIR__ . '/../../Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/constructor-in-anonymous-class-with-parameter-without-default-value.php',
-            'constructor-in-anonymous-class-without-parameters' => __DIR__ . '/../../Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/constructor-in-anonymous-class-without-parameters.php',
-            'constructor-in-class-with-parameter-without-default-value' => __DIR__ . '/../../Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/ConstructorInClassWithParameterWithoutDefaultValue.php',
-            'constructor-in-class-without-parameters' => __DIR__ . '/../../Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/ConstructorInClassWithoutParameters.php',
-            // traits are not supported
-            'constructor-in-trait-with-parameter-with-default-value' => __DIR__ . '/../../Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/ConstructorInTraitWithParameterWithDefaultValue.php',
-            'constructor-in-trait-with-parameter-without-default-value' => __DIR__ . '/../../Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/ConstructorInTraitWithParameterWithoutDefaultValue.php',
-            'constructor-in-trait-without-parameters' => __DIR__ . '/../../Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/ConstructorInTraitWithoutParameters.php',
-            // non-constructor-methods
-            'method-in-anonymous-class-with-parameter-with-default-value' => __DIR__ . '/../../Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/method-in-anonymous-class-with-parameter-with-default-value.php',
-            'method-in-class-with-parameter-with-default-value' => __DIR__ . '/../../Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/MethodInClassWithParameterWithDefaultValue.php',
-            'method-in-trait-with-parameter-with-default-value' => __DIR__ . '/../../Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Success/MethodInTraitWithParameterWithDefaultValue.php',
-        ];
+    use Test\Util\Helper;
 
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
-
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
+    public function testNoConstructorParameterWithDefaultValueRule(): void
     {
-        $paths = [
-            'constructor-in-anonymous-class-with-parameter-with-default-value' => [
-                __DIR__ . '/../../Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Failure/constructor-in-anonymous-class-with-parameter-with-default-value.php',
-                [
-                    'Constructor in anonymous class has parameter $bar with default value.',
-                    8,
-                ],
-            ],
-            'constructor-with-wrong-capitalization-in-anonymous-class-with-parameter-with-default-value' => [
-                __DIR__ . '/../../Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Failure/constructor-with-wrong-capitalization-in-anonymous-class-with-parameter-with-default-value.php',
-                [
-                    'Constructor in anonymous class has parameter $bar with default value.',
-                    8,
-                ],
-            ],
-            'constructor-in-class-with-parameter-with-default-value' => [
-                __DIR__ . '/../../Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Failure/ConstructorInClassWithParameterWithDefaultValue.php',
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Methods/NoConstructorParameterWithDefaultValueRule'),
+            [
                 [
                     \sprintf(
                         'Constructor in %s has parameter $bar with default value.',
-                        Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule\Failure\ConstructorInClassWithParameterWithDefaultValue::class,
+                        Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule\ConstructorInClassWithParameterWithDefaultValue::class,
                     ),
                     9,
                 ],
-            ],
-            'constructor-with-wrong-capitalization-in-class-with-parameter-with-default-value' => [
-                __DIR__ . '/../../Fixture/Methods/NoConstructorParameterWithDefaultValueRule/Failure/ConstructorWithWrongCapitalizationInClassWithParameterWithDefaultValue.php',
                 [
                     \sprintf(
                         'Constructor in %s has parameter $bar with default value.',
-                        Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule\Failure\ConstructorWithWrongCapitalizationInClassWithParameterWithDefaultValue::class,
+                        Test\Fixture\Methods\NoConstructorParameterWithDefaultValueRule\ConstructorWithWrongCapitalizationInClassWithParameterWithDefaultValue::class,
                     ),
                     9,
                 ],
+                [
+                    'Constructor in anonymous class has parameter $bar with default value.',
+                    26,
+                ],
+                [
+                    'Constructor in anonymous class has parameter $bar with default value.',
+                    32,
+                ],
             ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
+        );
     }
 
-    /**
-     * @return Rules\Rule<Node\Stmt\ClassMethod>
-     */
     protected function getRule(): Rules\Rule
     {
         return new Methods\NoConstructorParameterWithDefaultValueRule();
diff --git a/test/Integration/Methods/NoNullableReturnTypeDeclarationRuleTest.php b/test/Integration/Methods/NoNullableReturnTypeDeclarationRuleTest.php
index 29bf375c..a565a4b7 100644
--- a/test/Integration/Methods/NoNullableReturnTypeDeclarationRuleTest.php
+++ b/test/Integration/Methods/NoNullableReturnTypeDeclarationRuleTest.php
@@ -15,108 +15,65 @@
 
 use Ergebnis\PHPStan\Rules\Methods;
 use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
 use PHPStan\Rules;
+use PHPStan\Testing;
 
 /**
  * @covers \Ergebnis\PHPStan\Rules\Methods\NoNullableReturnTypeDeclarationRule
  *
  * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
+ *
+ * @extends Testing\RuleTestCase<Methods\NoNullableReturnTypeDeclarationRule>
  */
-final class NoNullableReturnTypeDeclarationRuleTest extends Test\Integration\AbstractTestCase
+final class NoNullableReturnTypeDeclarationRuleTest extends Testing\RuleTestCase
 {
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'method-in-anonymous-class-with-return-type-declaration' => __DIR__ . '/../../Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInAnonymousClassWithReturnTypeDeclaration.php',
-            'method-in-anonymous-class-without-return-type-declaration' => __DIR__ . '/../../Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInAnonymousClassWithoutReturnTypeDeclaration.php',
-            'method-in-class-with-return-type-declaration' => __DIR__ . '/../../Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInClassWithReturnTypeDeclaration.php',
-            'method-in-class-without-return-type-declaration' => __DIR__ . '/../../Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInClassWithoutReturnTypeDeclaration.php',
-            'method-in-interface-with-return-type-declaration' => __DIR__ . '/../../Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInInterfaceWithReturnTypeDeclaration.php',
-            'method-in-interface-without-return-type-declaration' => __DIR__ . '/../../Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInInterfaceWithoutReturnTypeDeclaration.php',
-            // traits are currently not supported
-            'method-in-trait-with-nullable-return-type-declaration' => __DIR__ . '/../../Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInTraitWithNullableReturnTypeDeclaration.php',
-            'method-in-trait-with-return-type-declaration' => __DIR__ . '/../../Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInTraitWithReturnTypeDeclaration.php',
-            'method-in-trait-without-return-type-declaration' => __DIR__ . '/../../Fixture/Methods/NoNullableReturnTypeDeclarationRule/Success/MethodInTraitWithoutReturnTypeDeclaration.php',
-        ];
-
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
+    use Test\Util\Helper;
 
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
+    public function testNoNullableReturnTypeDeclarationRule(): void
     {
-        $paths = [
-            'method-in-anonymous-class-with-nullable-return-type-declaration' => [
-                __DIR__ . '/../../Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInAnonymousClassWithNullableReturnTypeDeclaration.php',
-                [
-                    'Method toString() in anonymous class has a nullable return type declaration.',
-                    12,
-                ],
-            ],
-            'method-in-anonymous-class-with-nullable-union-return-type-declaration' => [
-                __DIR__ . '/../../Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInAnonymousClassWithNullableUnionReturnTypeDeclaration.php',
-                [
-                    'Method toString() in anonymous class has a nullable return type declaration.',
-                    12,
-                ],
-            ],
-            'method-in-class-with-nullable-return-type-declaration' => [
-                __DIR__ . '/../../Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInClassWithNullableReturnTypeDeclaration.php',
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Methods/NoNullableReturnTypeDeclarationRule'),
+            [
                 [
                     \sprintf(
                         'Method %s::toString() has a nullable return type declaration.',
-                        Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\Failure\MethodInClassWithNullableReturnTypeDeclaration::class,
+                        Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\MethodInClassWithNullableReturnTypeDeclaration::class,
                     ),
                     9,
                 ],
-            ],
-            'method-in-class-with-nullable-union-return-type-declaration' => [
-                __DIR__ . '/../../Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInClassWithNullableUnionReturnTypeDeclaration.php',
                 [
                     \sprintf(
                         'Method %s::toString() has a nullable return type declaration.',
-                        Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\Failure\MethodInClassWithNullableUnionReturnTypeDeclaration::class,
+                        Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\MethodInClassWithNullableUnionReturnTypeDeclaration::class,
                     ),
                     9,
                 ],
-            ],
-            'method-in-interface-with-nullable-return-type-declaration' => [
-                __DIR__ . '/../../Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInInterfaceWithNullableReturnTypeDeclaration.php',
                 [
                     \sprintf(
                         'Method %s::toString() has a nullable return type declaration.',
-                        Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\Failure\MethodInInterfaceWithNullableReturnTypeDeclaration::class,
+                        Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\MethodInInterfaceWithNullableReturnTypeDeclaration::class,
                     ),
                     9,
                 ],
-            ],
-            'method-in-interface-with-nullable-union-return-type-declaration' => [
-                __DIR__ . '/../../Fixture/Methods/NoNullableReturnTypeDeclarationRule/Failure/MethodInInterfaceWithNullableUnionReturnTypeDeclaration.php',
                 [
                     \sprintf(
                         'Method %s::toString() has a nullable return type declaration.',
-                        Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\Failure\MethodInInterfaceWithNullableUnionReturnTypeDeclaration::class,
+                        Test\Fixture\Methods\NoNullableReturnTypeDeclarationRule\MethodInInterfaceWithNullableUnionReturnTypeDeclaration::class,
                     ),
                     9,
                 ],
+                [
+                    'Method toString() in anonymous class has a nullable return type declaration.',
+                    22,
+                ],
+                [
+                    'Method toString() in anonymous class has a nullable return type declaration.',
+                    29,
+                ],
             ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
+        );
     }
 
-    /**
-     * @return Rules\Rule<Node\Stmt\ClassMethod>
-     */
     protected function getRule(): Rules\Rule
     {
         return new Methods\NoNullableReturnTypeDeclarationRule();
diff --git a/test/Integration/Methods/NoParameterWithContainerTypeDeclarationRuleTest.php b/test/Integration/Methods/NoParameterWithContainerTypeDeclarationRuleTest.php
index bfb4558f..a70fd387 100644
--- a/test/Integration/Methods/NoParameterWithContainerTypeDeclarationRuleTest.php
+++ b/test/Integration/Methods/NoParameterWithContainerTypeDeclarationRuleTest.php
@@ -15,139 +15,91 @@
 
 use Ergebnis\PHPStan\Rules\Methods;
 use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
 use PHPStan\Rules;
+use PHPStan\Testing;
 use Psr\Container;
 
 /**
  * @covers \Ergebnis\PHPStan\Rules\Methods\NoParameterWithContainerTypeDeclarationRule
  *
  * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
+ *
+ * @extends Testing\RuleTestCase<Methods\NoParameterWithContainerTypeDeclarationRule>
  */
-final class NoParameterWithContainerTypeDeclarationRuleTest extends Test\Integration\AbstractTestCase
+final class NoParameterWithContainerTypeDeclarationRuleTest extends Testing\RuleTestCase
 {
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'anonymous-class-with-method-with-parameter-with-class-implementing-container-interface-as-type-declaration-where-name-is-excluded' => __DIR__ . '/../../Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/anonymous-class-with-method-with-parameter-with-class-implementing-container-interface-as-type-declaration-where-name-is-excluded.php',
-            'anonymous-class-with-method-with-parameter-with-other-type-declaration' => __DIR__ . '/../../Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/anonymous-class-with-method-with-parameter-with-other-type-declaration.php',
-            'anonymous-class-with-method-without-parameters' => __DIR__ . '/../../Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/anonymous-class-with-method-without-parameter.php',
-            'class-with-method-with-parameter-with-class-implementing-container-interface-as-type-declaration-where-name-is-excluded' => __DIR__ . '/../../Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/ClassWithMethodWithParameterWithClassImplementingContainerInterfaceAsTypeDeclarationWhereNameIsExcluded.php',
-            'class-with-method-with-parameter-with-other-type-declaration' => __DIR__ . '/../../Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/ClassWithMethodWithParameterWithOtherTypeDeclaration.php',
-            'class-with-method-without-parameter' => __DIR__ . '/../../Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/ClassWithMethodWithoutParameter.php',
-            'interface-with-method-with-parameter-with-class-implementing-container-interface-as-type-declaration-where-name-is-excluded' => __DIR__ . '/../../Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/InterfaceWithMethodWithParameterWithContainerInterfaceAsTypeDeclarationWhereNameIsExcluded.php',
-            'interface-with-method-with-parameter-with-other-type-declaration' => __DIR__ . '/../../Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/InterfaceWithMethodWithParameterWithOtherTypeDeclaration.php',
-            'interface-with-method-without-parameter' => __DIR__ . '/../../Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Success/InterfaceWithMethodWithoutParameter.php',
-        ];
+    use Test\Util\Helper;
 
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
-
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
+    public function testNoParameterWithContainerTypeDeclarationRuleTest(): void
     {
-        $paths = [
-            'anonymous-class-with-method-with-parameter-with-class-implementing-container-interface-as-type-declaration' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/anonymous-class-with-method-with-parameter-with-class-implementing-container-interface-as-type-declaration.php',
-                [
-                    \sprintf(
-                        'Method __construct() in anonymous class has a parameter $container with a type declaration of %s, but containers should not be injected.',
-                        Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Failure\ClassImplementingContainerInterface::class,
-                    ),
-                    9,
-                ],
-            ],
-            'anonymous-class-with-method-with-parameter-with-container-interface-as-type-declaration' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/anonymous-class-with-method-with-parameter-with-container-interface-as-type-declaration.php',
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Methods/NoParameterWithContainerTypeDeclarationRule'),
+            [
                 [
                     \sprintf(
-                        'Method __construct() in anonymous class has a parameter $container with a type declaration of %s, but containers should not be injected.',
-                        Container\ContainerInterface::class,
+                        'Method %s::method() has a parameter $container with a type declaration of %s, but containers should not be injected.',
+                        Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\ClassImplementingContainerInterfaceWithMethodWithParameterWithSelfAsTypeDeclaration::class,
+                        Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\ClassImplementingContainerInterfaceWithMethodWithParameterWithSelfAsTypeDeclaration::class,
                     ),
                     11,
                 ],
-            ],
-            'anonymous-class-with-method-with-parameter-with-interface-extending-container-interface-as-type-declaration' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/anonymous-class-with-method-with-parameter-with-interface-extending-container-interface-as-type-declaration.php',
                 [
                     \sprintf(
-                        'Method __construct() in anonymous class has a parameter $container with a type declaration of %s, but containers should not be injected.',
-                        Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Failure\InterfaceExtendingContainerInterface::class,
+                        'Method %s::method() has a parameter $container with a type declaration of %s, but containers should not be injected.',
+                        Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\ClassWithMethodWithParameterWithClassImplementingContainerInterfaceAsTypeDeclaration::class,
+                        Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\ClassImplementingContainerInterface::class,
                     ),
                     9,
                 ],
-            ],
-            'class-implementing-container-interface-with-method-with-parameter-with-self-as-type-declaration' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/ClassImplementingContainerInterfaceWithMethodWithParameterWithSelfAsTypeDeclaration.php',
                 [
                     \sprintf(
                         'Method %s::method() has a parameter $container with a type declaration of %s, but containers should not be injected.',
-                        Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Failure\ClassImplementingContainerInterfaceWithMethodWithParameterWithSelfAsTypeDeclaration::class,
-                        Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Failure\ClassImplementingContainerInterfaceWithMethodWithParameterWithSelfAsTypeDeclaration::class,
+                        Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\ClassWithMethodWithParameterWithContainerInterfaceAsTypeDeclaration::class,
+                        Container\ContainerInterface::class,
                     ),
                     11,
                 ],
-            ],
-            'class-with-method-with-parameter-with-class-implementing-container-interface-as-type-declaration' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/ClassWithMethodWithParameterWithClassImplementingContainerInterfaceAsTypeDeclaration.php',
                 [
                     \sprintf(
                         'Method %s::method() has a parameter $container with a type declaration of %s, but containers should not be injected.',
-                        Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Failure\ClassWithMethodWithParameterWithClassImplementingContainerInterfaceAsTypeDeclaration::class,
-                        Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Failure\ClassImplementingContainerInterface::class,
+                        Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\ClassWithMethodWithParameterWithInterfaceExtendingContainerInterfaceAsTypeDeclaration::class,
+                        Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\InterfaceExtendingContainerInterface::class,
                     ),
                     9,
                 ],
-            ],
-            'class-with-method-with-parameter-with-container-interface-as-type-declaration' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/ClassWithMethodWithParameterWithContainerInterfaceAsTypeDeclaration.php',
                 [
                     \sprintf(
                         'Method %s::method() has a parameter $container with a type declaration of %s, but containers should not be injected.',
-                        Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Failure\ClassWithMethodWithParameterWithContainerInterfaceAsTypeDeclaration::class,
+                        Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\InterfaceWithMethodWithParameterWithContainerInterfaceAsTypeDeclaration::class,
                         Container\ContainerInterface::class,
                     ),
                     11,
                 ],
-            ],
-            'class-with-method-with-parameter-with-interface-extending-container-interface-as-type-declaration' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/ClassWithMethodWithParameterWithInterfaceExtendingContainerInterfaceAsTypeDeclaration.php',
                 [
                     \sprintf(
-                        'Method %s::method() has a parameter $container with a type declaration of %s, but containers should not be injected.',
-                        Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Failure\ClassWithMethodWithParameterWithInterfaceExtendingContainerInterfaceAsTypeDeclaration::class,
-                        Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Failure\InterfaceExtendingContainerInterface::class,
+                        'Method __construct() in anonymous class has a parameter $container with a type declaration of %s, but containers should not be injected.',
+                        Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\ClassImplementingContainerInterface::class,
                     ),
-                    9,
+                    29,
                 ],
-            ],
-            'interface-with-method-with-parameter-with-container-interface-as-type-declaration' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithContainerTypeDeclarationRule/Failure/InterfaceWithMethodWithParameterWithContainerInterfaceAsTypeDeclaration.php',
                 [
                     \sprintf(
-                        'Method %s::method() has a parameter $container with a type declaration of %s, but containers should not be injected.',
-                        Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\Failure\InterfaceWithMethodWithParameterWithContainerInterfaceAsTypeDeclaration::class,
+                        'Method __construct() in anonymous class has a parameter $container with a type declaration of %s, but containers should not be injected.',
                         Container\ContainerInterface::class,
                     ),
-                    11,
+                    36,
+                ],
+                [
+                    \sprintf(
+                        'Method __construct() in anonymous class has a parameter $container with a type declaration of %s, but containers should not be injected.',
+                        Test\Fixture\Methods\NoParameterWithContainerTypeDeclarationRule\InterfaceExtendingContainerInterface::class,
+                    ),
+                    43,
                 ],
             ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
+        );
     }
 
-    /**
-     * @return Rules\Rule<Node\Stmt\ClassMethod>
-     */
     protected function getRule(): Rules\Rule
     {
         return new Methods\NoParameterWithContainerTypeDeclarationRule(
diff --git a/test/Integration/Methods/NoParameterWithNullDefaultValueRuleTest.php b/test/Integration/Methods/NoParameterWithNullDefaultValueRuleTest.php
index 5ffc0c92..6783d93b 100644
--- a/test/Integration/Methods/NoParameterWithNullDefaultValueRuleTest.php
+++ b/test/Integration/Methods/NoParameterWithNullDefaultValueRuleTest.php
@@ -15,141 +15,83 @@
 
 use Ergebnis\PHPStan\Rules\Methods;
 use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
 use PHPStan\Rules;
+use PHPStan\Testing;
 
 /**
  * @covers \Ergebnis\PHPStan\Rules\Methods\NoParameterWithNullDefaultValueRule
  *
  * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
+ *
+ * @extends Testing\RuleTestCase<Methods\NoParameterWithNullDefaultValueRule>
  */
-final class NoParameterWithNullDefaultValueRuleTest extends Test\Integration\AbstractTestCase
+final class NoParameterWithNullDefaultValueRuleTest extends Testing\RuleTestCase
 {
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'method-in-anonymous-class-with-parameter-with-non-null-default-value' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/method-in-anonymous-class-with-parameter-with-non-null-default-value.php',
-            'method-in-anonymous-class-with-parameter-without-default-value' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/method-in-anonymous-class-with-parameter-without-default-value.php',
-            'method-in-anonymous-class-without-parameters' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/method-in-anonymous-class-without-parameters.php',
-            'method-in-class-with-parameter-with-non-null-default-value' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInClassWithParameterWithNonNullDefaultValue.php',
-            'method-in-class-with-parameter-without-default-value' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInClassWithParameterWithoutDefaultValue.php',
-            'method-in-class-without-parameters' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInClassWithoutParameters.php',
-            'method-in-interface-with-parameter-with-non-null-default-value' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInInterfaceWithParameterWithNonNullDefaultValue.php',
-            'method-in-interface-with-parameter-without-default-value' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInInterfaceWithParameterWithoutDefaultValue.php',
-            'method-in-interface-without-parameters' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInInterfaceWithoutParameters.php',
-            // traits are not supported
-            'method-in-trait-with-parameter-with-default-value' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithParameterWithDefaultValue.php',
-            'method-in-trait-with-parameter-with-non-null-default-value' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithParameterWithNonNullDefaultValue.php',
-            'method-in-trait-with-parameter-with-root-namespace-referenced-value' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithParameterWithRootNamespaceReferencedNullDefaultValue.php',
-            'method-in-trait-with-parameter-with-wrongly-capitalized-null-default-value' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithParameterWithWronlgyCapitalizedNullDefaultValue.php',
-            'method-in-trait-with-parameter-without-default-value' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithParameterWithoutDefaultValue.php',
-            'method-in-trait-without-parameters' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Success/MethodInTraitWithoutParameters.php',
-        ];
-
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
+    use Test\Util\Helper;
 
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
+    public function testNoParameterWithNullDefaultValueRule(): void
     {
-        $paths = [
-            'method-in-anonymous-class-with-parameter-with-null-default-value' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/method-in-anonymous-class-with-parameter-with-null-default-value.php',
-                [
-                    'Method foo() in anonymous class has parameter $bar with null as default value.',
-                    8,
-                ],
-            ],
-            'method-in-anonymous-class-with-parameter-with-root-namespace-referenced-null-default-value' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/method-in-anonymous-class-with-parameter-with-root-namespace-referenced-null-default-value.php',
-                [
-                    'Method foo() in anonymous class has parameter $bar with null as default value.',
-                    8,
-                ],
-            ],
-            'method-in-anonymous-class-with-parameter-with-wrongly-capitalized-null-default-value' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/method-in-anonymous-class-with-parameter-with-wrongly-capitalized-null-default-value.php',
-                [
-                    'Method foo() in anonymous class has parameter $bar with null as default value.',
-                    8,
-                ],
-            ],
-            'method-in-class-with-parameter-with-null-default-value' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInClassWithParameterWithNullDefaultValue.php',
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule'),
+            [
                 [
                     \sprintf(
                         'Method %s::foo() has parameter $bar with null as default value.',
-                        Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Failure\MethodInClassWithParameterWithNullDefaultValue::class,
+                        Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\MethodInClassWithParameterWithNullDefaultValue::class,
                     ),
                     9,
                 ],
-            ],
-            'method-in-class-with-parameter-with-root-namespace-referenced-null-default-value' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInClassWithParameterWithRootNamespaceReferencedNullDefaultValue.php',
                 [
                     \sprintf(
                         'Method %s::foo() has parameter $bar with null as default value.',
-                        Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Failure\MethodInClassWithParameterWithRootNamespaceReferencedNullDefaultValue::class,
+                        Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\MethodInClassWithParameterWithRootNamespaceReferencedNullDefaultValue::class,
                     ),
                     9,
                 ],
-            ],
-            'method-in-class-with-parameter-with-wrongly-capitalized-null-default-value' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInClassWithParameterWithWronglyCapitalizedNullDefaultValue.php',
                 [
                     \sprintf(
                         'Method %s::foo() has parameter $bar with null as default value.',
-                        Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Failure\MethodInClassWithParameterWithWronglyCapitalizedNullDefaultValue::class,
+                        Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\MethodInClassWithParameterWithWronglyCapitalizedNullDefaultValue::class,
                     ),
                     9,
                 ],
-            ],
-            'method-in-interface-with-parameter-with-null-default-value' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInInterfaceWithParameterWithNullDefaultValue.php',
                 [
                     \sprintf(
                         'Method %s::foo() has parameter $bar with null as default value.',
-                        Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Failure\MethodInInterfaceWithParameterWithNullDefaultValue::class,
+                        Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\MethodInInterfaceWithParameterWithNullDefaultValue::class,
                     ),
                     9,
                 ],
-            ],
-            'method-in-interface-with-parameter-with-root-namespace-referenced-null-default-value' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInInterfaceWithParameterWithRootNamespaceReferencedNullDefaultValue.php',
                 [
                     \sprintf(
                         'Method %s::foo() has parameter $bar with null as default value.',
-                        Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Failure\MethodInInterfaceWithParameterWithRootNamespaceReferencedNullDefaultValue::class,
+                        Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\MethodInInterfaceWithParameterWithRootNamespaceReferencedNullDefaultValue::class,
                     ),
                     9,
                 ],
-            ],
-            'method-in-interface-with-parameter-wrongly-capitalized-null-default-value' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithNullDefaultValueRule/Failure/MethodInInterfaceWithParameterWithWronlgyCapitalizedNullDefaultValue.php',
                 [
                     \sprintf(
                         'Method %s::foo() has parameter $bar with null as default value.',
-                        Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\Failure\MethodInInterfaceWithParameterWithWronlgyCapitalizedNullDefaultValue::class,
+                        Test\Fixture\Methods\NoParameterWithNullDefaultValueRule\MethodInInterfaceWithParameterWithWronlgyCapitalizedNullDefaultValue::class,
                     ),
                     9,
                 ],
+                [
+                    'Method foo() in anonymous class has parameter $bar with null as default value.',
+                    28,
+                ],
+                [
+                    'Method foo() in anonymous class has parameter $bar with null as default value.',
+                    35,
+                ],
+                [
+                    'Method foo() in anonymous class has parameter $bar with null as default value.',
+                    42,
+                ],
             ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
+        );
     }
 
-    /**
-     * @return Rules\Rule<Node\Stmt\ClassMethod>
-     */
     protected function getRule(): Rules\Rule
     {
         return new Methods\NoParameterWithNullDefaultValueRule();
diff --git a/test/Integration/Methods/NoParameterWithNullableTypeDeclarationRuleTest.php b/test/Integration/Methods/NoParameterWithNullableTypeDeclarationRuleTest.php
index c488bb9b..c4f81442 100644
--- a/test/Integration/Methods/NoParameterWithNullableTypeDeclarationRuleTest.php
+++ b/test/Integration/Methods/NoParameterWithNullableTypeDeclarationRuleTest.php
@@ -15,111 +15,65 @@
 
 use Ergebnis\PHPStan\Rules\Methods;
 use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
 use PHPStan\Rules;
+use PHPStan\Testing;
 
 /**
  * @covers \Ergebnis\PHPStan\Rules\Methods\NoParameterWithNullableTypeDeclarationRule
  *
  * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
+ *
+ * @extends Testing\RuleTestCase<Methods\NoParameterWithNullableTypeDeclarationRule>
  */
-final class NoParameterWithNullableTypeDeclarationRuleTest extends Test\Integration\AbstractTestCase
+final class NoParameterWithNullableTypeDeclarationRuleTest extends Testing\RuleTestCase
 {
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'method-in-anonymous-class-with-parameter-with-type-declaration' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/method-in-anonymous-class-with-parameter-with-type-declaration.php',
-            'method-in-anonymous-class-with-parameter-without-type-declaration' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/method-in-anonymous-class-with-parameter-without-type-declaration.php',
-            'method-in-anonymous-class-without-parameters' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/method-in-anonymous-class-without-parameters.php',
-            'method-in-class-with-parameter-with-type-declaration' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInClassWithParameterWithTypeDeclaration.php',
-            'method-in-class-with-parameter-without-type-declaration' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInClassWithParameterWithoutTypeDeclaration.php',
-            'method-in-class-without-parameters' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInClassWithoutParameters.php',
-            'method-in-interface-with-parameter-with-type-declaration' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInInterfaceWithParameterWithTypeDeclaration.php',
-            'method-in-interface-with-parameter-without-type-declaration' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInInterfaceWithParameterWithoutTypeDeclaration.php',
-            'method-in-interface-without-parameters' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInInterfaceWithoutParameters.php',
-            // traits are not supported
-            'method-in-trait-with-parameter-with-type-declaration' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInTraitWithParameterWithTypeDeclaration.php',
-            'method-in-trait-with-parameter-without-type-declaration' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInTraitWithParameterWithoutTypeDeclaration.php',
-            'method-in-trait-without-parameters' => __DIR__ . '/../../Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Success/MethodInTraitWithoutParameters.php',
-        ];
-
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
+    use Test\Util\Helper;
 
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
+    public function testNoParameterWithNullableTypeDeclarationRule(): void
     {
-        $paths = [
-            'method-in-anonymous-class-with-parameter-with-nullable-type-declaration' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/method-in-anonymous-class-with-parameter-with-nullable-type-declaration.php',
-                [
-                    'Method foo() in anonymous class has parameter $bar with a nullable type declaration.',
-                    8,
-                ],
-            ],
-            'method-in-anonymous-class-with-parameter-with-nullable-union-type-declaration' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/method-in-anonymous-class-with-parameter-with-nullable-union-type-declaration.php',
-                [
-                    'Method foo() in anonymous class has parameter $bar with a nullable type declaration.',
-                    8,
-                ],
-            ],
-            'method-in-class-with-parameter-with-nullable-type-declaration' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/MethodInClassWithParameterWithNullableTypeDeclaration.php',
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Methods/NoParameterWithNullableTypeDeclarationRule'),
+            [
                 [
                     \sprintf(
                         'Method %s::foo() has parameter $bar with a nullable type declaration.',
-                        Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Failure\MethodInClassWithParameterWithNullableTypeDeclaration::class,
+                        Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\MethodInClassWithParameterWithNullableTypeDeclaration::class,
                     ),
                     9,
                 ],
-            ],
-            'method-in-class-with-parameter-with-nullable-union-type-declaration' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/MethodInClassWithParameterWithNullableUnionTypeDeclaration.php',
                 [
                     \sprintf(
                         'Method %s::foo() has parameter $bar with a nullable type declaration.',
-                        Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Failure\MethodInClassWithParameterWithNullableUnionTypeDeclaration::class,
+                        Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\MethodInClassWithParameterWithNullableUnionTypeDeclaration::class,
                     ),
                     9,
                 ],
-            ],
-            'method-in-interface-with-parameter-with-nullable-type-declaration' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/MethodInInterfaceWithParameterWithNullableTypeDeclaration.php',
                 [
                     \sprintf(
                         'Method %s::foo() has parameter $bar with a nullable type declaration.',
-                        Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Failure\MethodInInterfaceWithParameterWithNullableTypeDeclaration::class,
+                        Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\MethodInInterfaceWithParameterWithNullableTypeDeclaration::class,
                     ),
                     9,
                 ],
-            ],
-            'method-in-interface-with-parameter-with-nullable-union-type-declaration' => [
-                __DIR__ . '/../../Fixture/Methods/NoParameterWithNullableTypeDeclarationRule/Failure/MethodInInterfaceWithParameterWithNullableUnionTypeDeclaration.php',
                 [
                     \sprintf(
                         'Method %s::foo() has parameter $bar with a nullable type declaration.',
-                        Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\Failure\MethodInInterfaceWithParameterWithNullableUnionTypeDeclaration::class,
+                        Test\Fixture\Methods\NoParameterWithNullableTypeDeclarationRule\MethodInInterfaceWithParameterWithNullableUnionTypeDeclaration::class,
                     ),
                     9,
                 ],
+                [
+                    'Method foo() in anonymous class has parameter $bar with a nullable type declaration.',
+                    28,
+                ],
+                [
+                    'Method foo() in anonymous class has parameter $bar with a nullable type declaration.',
+                    35,
+                ],
             ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
+        );
     }
 
-    /**
-     * @return Rules\Rule<Node\Stmt\ClassMethod>
-     */
     protected function getRule(): Rules\Rule
     {
         return new Methods\NoParameterWithNullableTypeDeclarationRule();
diff --git a/test/Integration/Methods/PrivateInFinalClassRuleTest.php b/test/Integration/Methods/PrivateInFinalClassRuleTest.php
index 41436b14..e00391b5 100644
--- a/test/Integration/Methods/PrivateInFinalClassRuleTest.php
+++ b/test/Integration/Methods/PrivateInFinalClassRuleTest.php
@@ -15,68 +15,47 @@
 
 use Ergebnis\PHPStan\Rules\Methods;
 use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
 use PHPStan\Rules;
+use PHPStan\Testing;
 
 /**
  * @covers \Ergebnis\PHPStan\Rules\Methods\PrivateInFinalClassRule
  *
  * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
+ *
+ * @extends Testing\RuleTestCase<Methods\PrivateInFinalClassRule>
  */
-final class PrivateInFinalClassRuleTest extends Test\Integration\AbstractTestCase
+final class PrivateInFinalClassRuleTest extends Testing\RuleTestCase
 {
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'abstract-class-with-protected-method' => __DIR__ . '/../../Fixture/Methods/PrivateInFinalClassRule/Success/AbstractClassWithProtectedMethod.php',
-            'class-with-protected-method' => __DIR__ . '/../../Fixture/Methods/PrivateInFinalClassRule/Success/ClassWithProtectedMethod.php',
-            'final-class-with-private-method' => __DIR__ . '/../../Fixture/Methods/PrivateInFinalClassRule/Success/FinalClassWithPrivateMethod.php',
-            'final-class-with-protected-method-extending-class-extending-class-with-same-protected-method' => __DIR__ . '/../../Fixture/Methods/PrivateInFinalClassRule/Success/FinalClassWithProtectedMethodExtendingClassExtendingClassWithSameProtectedMethod.php',
-            'final-class-with-protected-method-extending-class-with-same-protected-method' => __DIR__ . '/../../Fixture/Methods/PrivateInFinalClassRule/Success/FinalClassWithProtectedMethodExtendingClassWithSameProtectedMethod.php',
-            'final-class-with-protected-method-from-trait' => __DIR__ . '/../../Fixture/Methods/PrivateInFinalClassRule/Success/FinalClassWithProtectedMethodFromTrait.php',
-            'final-class-with-public-method' => __DIR__ . '/../../Fixture/Methods/PrivateInFinalClassRule/Success/FinalClassWithPublicMethod.php',
-        ];
-
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
+    use Test\Util\Helper;
 
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
+    public function testPrivateInFinalClassRule(): void
     {
-        $paths = [
-            'anonymous-class-with-protected-method' => [
-                __DIR__ . '/../../Fixture/Methods/PrivateInFinalClassRule/Failure/AnonymousClassWithProtectedMethod.php',
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Methods/PrivateInFinalClassRule'),
+            [
                 [
-                    'Method method() in anonymous class is protected, but since the containing class is final, it can be private.',
-                    8,
+                    \sprintf(
+                        'Method %s::method() is protected, but since the containing class is final, it can be private.',
+                        Test\Fixture\Methods\PrivateInFinalClassRule\FinalClassWithProtectedMethod::class,
+                    ),
+                    9,
                 ],
-            ],
-            'final-class-with-protected-method' => [
-                __DIR__ . '/../../Fixture/Methods/PrivateInFinalClassRule/Failure/FinalClassWithProtectedMethod.php',
                 [
                     \sprintf(
                         'Method %s::method() is protected, but since the containing class is final, it can be private.',
-                        Test\Fixture\Methods\PrivateInFinalClassRule\Failure\FinalClassWithProtectedMethod::class,
+                        Test\Fixture\Methods\PrivateInFinalClassRule\FinalClassWithProtectedMethodFromTrait::class,
                     ),
                     9,
                 ],
+                [
+                    'Method method() in anonymous class is protected, but since the containing class is final, it can be private.',
+                    8,
+                ],
             ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
+        );
     }
 
-    /**
-     * @return Rules\Rule<Node\Stmt\ClassMethod>
-     */
     protected function getRule(): Rules\Rule
     {
         return new Methods\PrivateInFinalClassRule();
diff --git a/test/Integration/Statements/NoSwitchRuleTest.php b/test/Integration/Statements/NoSwitchRuleTest.php
index 24e62d77..eb615f5d 100644
--- a/test/Integration/Statements/NoSwitchRuleTest.php
+++ b/test/Integration/Statements/NoSwitchRuleTest.php
@@ -15,59 +15,37 @@
 
 use Ergebnis\PHPStan\Rules\Statements;
 use Ergebnis\PHPStan\Rules\Test;
-use PhpParser\Node;
 use PHPStan\Rules;
+use PHPStan\Testing;
 
 /**
  * @covers \Ergebnis\PHPStan\Rules\Statements\NoSwitchRule
  *
+ * @extends \PHPStan\Testing\RuleTestCase<Statements\NoSwitchRule>
+ *
  * @uses \Ergebnis\PHPStan\Rules\ErrorIdentifier
  */
-final class NoSwitchRuleTest extends Test\Integration\AbstractTestCase
+final class NoSwitchRuleTest extends Testing\RuleTestCase
 {
-    public static function provideCasesWhereAnalysisShouldSucceed(): iterable
-    {
-        $paths = [
-            'isset-not-used' => __DIR__ . '/../../Fixture/Statements/NoSwitchRule/Success/switch-not-used.php',
-        ];
-
-        foreach ($paths as $description => $path) {
-            yield $description => [
-                $path,
-            ];
-        }
-    }
+    use Test\Util\Helper;
 
-    public static function provideCasesWhereAnalysisShouldFail(): iterable
+    public function testNoSwitchRule(): void
     {
-        $paths = [
-            'switch-used-with-correct-case' => [
-                __DIR__ . '/../../Fixture/Statements/NoSwitchRule/Failure/switch-used-with-correct-case.php',
+        $this->analyse(
+            self::phpFilesIn(__DIR__ . '/../../Fixture/Statements/NoSwitchRule'),
+            [
                 [
                     'Control structures using switch should not be used.',
                     7,
                 ],
-            ],
-            'switch-used-with-incorrect-case' => [
-                __DIR__ . '/../../Fixture/Statements/NoSwitchRule/Failure/switch-used-with-incorrect-case.php',
                 [
                     'Control structures using switch should not be used.',
                     7,
                 ],
             ],
-        ];
-
-        foreach ($paths as $description => [$path, $error]) {
-            yield $description => [
-                $path,
-                $error,
-            ];
-        }
+        );
     }
 
-    /**
-     * @return Rules\Rule<Node\Stmt\Switch_>
-     */
     protected function getRule(): Rules\Rule
     {
         return new Statements\NoSwitchRule();
diff --git a/test/Util/Helper.php b/test/Util/Helper.php
new file mode 100644
index 00000000..ec2004da
--- /dev/null
+++ b/test/Util/Helper.php
@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * Copyright (c) 2018-2025 Andreas Möller
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE.md file that was distributed with this source code.
+ *
+ * @see https://github.com/ergebnis/phpstan-rules
+ */
+
+namespace Ergebnis\PHPStan\Rules\Test\Util;
+
+use Symfony\Component\Finder;
+
+trait Helper
+{
+    /**
+     * @return list<string>
+     */
+    private static function phpFilesIn(string $directory): array
+    {
+        $finder = Finder\Finder::create()
+            ->files()
+            ->in($directory)
+            ->name('/\.php$/')
+            ->sortByName();
+
+        return \array_map(static function (Finder\SplFileInfo $fileInfo): string {
+            return $fileInfo->getPathname();
+        }, \iterator_to_array($finder, false));
+    }
+}