Remove infection

.gitattributes

@@ -4,7 +4,6 @@
 /.editorconfig export-ignore
 /.gitattributes export-ignore
 /.gitignore export-ignore
-/infection.json export-ignore
 /Makefile export-ignore
 /phpstan.neon export-ignore
 /phpunit.xml export-ignore

.github/CONTRIBUTING.md

@@ -40,18 +40,6 @@ make test
 
 to run all the tests.
 
-## Mutation Tests
-
-We are using [`infection/infection`](https://github.com/infection/infection) to ensure a minimum quality of the tests.
-
-Enable `Xdebug` and run
-
-```bash
-make infection
-```
-
-to run mutation tests.
-
 ## Extra lazy?
 
 Run

.github/workflows/validate.yml

@@ -112,19 +112,3 @@ jobs:
       - run: vendor/bin/phpunit --coverage-clover=.build/logs/clover.xml
 
       - uses: codecov/codecov-action@v3
-
-  mutation-tests:
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - uses: shivammathur/setup-php@v2
-        with:
-          coverage: pcov
-          extensions: mbstring
-          php-version: 8.3
-
-      - run: composer install --no-interaction --no-progress --no-suggest
-
-      - run: vendor/bin/infection --ignore-msi-with-no-mutations --min-covered-msi=60 --min-msi=60

Makefile

@@ -23,11 +23,6 @@ php-cs-fixer:
 	mkdir --parents .build/php-cs-fixer
 	vendor/bin/php-cs-fixer fix --cache-file=.build/php-cs-fixer/cache
 
-.PHONY: infection
-infection: vendor ## Runs mutation tests with infection
-	mkdir --parents .build/infection
-	vendor/bin/infection --ignore-msi-with-no-mutations --min-covered-msi=60 --min-msi=60
-
 .PHONY: stan
 stan: vendor ## Runs a static analysis with phpstan
 	mkdir --parents .build/phpstan

composer.json

@@ -25,7 +25,6 @@
   },
   "require-dev": {
     "ergebnis/composer-normalize": "^2",
-    "infection/infection": "^0.26 || ^0.27",
     "jangregor/phpstan-prophecy": "^1",
     "mll-lab/graphql-php-scalars": "^6",
     "mll-lab/php-cs-fixer-config": "^5",