refact: rewrite of the library

- Remove Generators - It was not necessary to keep them
- Switch to PHPUnit 11
- Remove temporarily drupol/php-conventions, deps issue with vimeo/psalm
- Remove methods toArray and count
- Remove custom interfaces
- Update CI

.editorconfig

@@ -6,4 +6,3 @@ charset = utf-8
 max_line_length = 80
 indent_style = space
 indent_size = 4
-insert_final_newline = true

.envrc

@@ -0,0 +1 @@
+use flake github:loophp/nix-shell#env-php82 --impure

.github/workflows/continuous-integration.yml

@@ -14,7 +14,7 @@ jobs:
             fail-fast: false
             matrix:
                 operating-system: [ubuntu-latest, windows-latest, macOS-latest]
-                php-versions: ['7.1', '7.2', '7.3', '7.4']
+                php-versions: ["8.2", "8.3"]
 
         steps:
             - name: Checkout
@@ -26,7 +26,7 @@ jobs:
               uses: shivammathur/setup-php@master
               with:
                   php-version: ${{ matrix.php-versions }}
-                  extensions: mbstring,xdebug
+                  extensions: mbstring,pcov
             - name: Get Composer Cache Directory
               id: composer-cache
               run: echo "::set-output name=dir::$(composer config cache-files-dir)"
@@ -41,17 +41,5 @@ jobs:
             - name: Install dependencies
               run: composer install --no-progress --no-suggest --prefer-dist --optimize-autoloader
 
-            - name: Run Grumphp
-              run: vendor/bin/grumphp run --no-ansi -n
-              env:
-                  STRYKER_DASHBOARD_API_KEY: ${{ secrets.STRYKER_DASHBOARD_API_KEY }}
-
-            - name: Send PSALM data
-              run: vendor/bin/psalm --shepherd --stats
-              continue-on-error: true
-
-            - name: Scrutinizer
-              run: |
-                  wget https://scrutinizer-ci.com/ocular.phar
-                  php ocular.phar code-coverage:upload --format=php-clover build/logs/clover.xml
-              continue-on-error: true
+            - name: Run Tests
+              run: composer phpunit

composer.json

@@ -21,25 +21,35 @@
         }
     ],
     "require": {
-        "php": ">= 7.1.3"
+        "php": ">= 8.2"
     },
     "require-dev": {
-        "drupol/php-conventions": "^1.7.1",
-        "phpunit/php-code-coverage": "^4 || ^5",
-        "phpunit/phpunit": "^6 || ^7"
+        "ext-pcov": "*",
+        "phpunit/php-code-coverage": "^11",
+        "phpunit/phpunit": "^11",
+        "symfony/finder": "^7.2",
+        "symfony/yaml": "^7.2"
     },
     "config": {
-        "sort-packages": true
+        "sort-packages": true,
+        "allow-plugins": {
+            "ergebnis/composer-normalize": true,
+            "phpro/grumphp": true,
+            "phpstan/extension-installer": true
+        }
     },
     "autoload": {
         "psr-4": {
-            "drupol\\phpermutations\\": "src/",
+            "drupol\\phpermutations\\": "src/"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
             "drupol\\phpermutations\\Tests\\": "tests/src/"
         }
     },
     "scripts": {
-        "grumphp": "./vendor/bin/grumphp run",
-        "phpunit": "./vendor/bin/phpunit --coverage-clover build/logs/clover.xml -c tests/phpunit.xml tests"
+        "phpunit": "./vendor/bin/phpunit --coverage-clover build/logs/clover.xml -c phpunit.xml tests"
     },
     "support": {
         "issues": "https://github.com/drupol/phpermutations/issues",

phpunit.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd"
+         bootstrap="vendor/autoload.php"
+         cacheDirectory=".phpunit.cache"
+         executionOrder="depends,defects"
+         shortenArraysForExportThreshold="10"
+         requireCoverageMetadata="true"
+         beStrictAboutCoverageMetadata="true"
+         beStrictAboutOutputDuringTests="true"
+         displayDetailsOnPhpunitDeprecations="true"
+         failOnPhpunitDeprecation="true"
+         failOnRisky="true"
+         failOnWarning="true">
+    <testsuites>
+        <testsuite name="default">
+            <directory>tests</directory>
+        </testsuite>
+    </testsuites>
+
+    <source ignoreIndirectDeprecations="true" restrictNotices="true" restrictWarnings="true">
+        <include>
+            <directory>src</directory>
+        </include>
+    </source>
+</phpunit>

src/Combinatorics.php

@@ -8,114 +8,44 @@
 
 abstract class Combinatorics
 {
-    /**
-     * The dataset.
-     *
-     * @var array<int, mixed>
-     */
     protected $dataset;
 
-    /**
-     * The number of values in the dataset.
-     *
-     * @var int
-     */
-    protected $datasetCount;
+    protected int $datasetCount;
 
-    /**
-     * The length.
-     *
-     * @var int
-     */
     protected $length;
 
-    /**
-     * Combinatorics constructor.
-     *
-     * @param array<int, mixed>    $dataset
-     *                          The dataset
-     * @param int|null $length
-     *                          The length
-     */
-    public function __construct(array $dataset = [], $length = null)
+    public function __construct(array $dataset = [], ?int $length = null)
     {
         $this->setDataset($dataset);
         $this->datasetCount = count($this->dataset);
         $this->setLength($length);
     }
 
-    /**
-     * Count elements of an object.
-     *
-     * @return int
-     *             The number of element
-     */
-    public function count(): int
-    {
-        return count($this->toArray());
-    }
-
-    /**
-     * Get the dataset.
-     *
-     * @return mixed[]
-     *                 The dataset
-     */
     public function getDataset(): array
     {
         return $this->dataset;
     }
 
-    /**
-     * Get the length.
-     *
-     * @return int
-     *             The length
-     */
     public function getLength(): int
     {
         return (int) $this->length;
     }
 
-    /**
-     * Set the dataset.
-     *
-     * @param array<int, mixed> $dataset
-     *                       The dataset
-     *
-     * @return $this
-     */
     public function setDataset(array $dataset = []): Combinatorics
     {
         $this->dataset = $dataset;
 
         return $this;
     }
 
-    /**
-     * Set the length.
-     *
-     * @param int|null $length
-     *                    The length
-     *
-     * @return $this
-     */
-    public function setLength($length = null): Combinatorics
+    public function setLength(?int $length = null): Combinatorics
     {
         $length = $length ?? $this->datasetCount;
         $this->length = (abs($length) > $this->datasetCount) ? $this->datasetCount : $length;
 
         return $this;
     }
 
-    /**
-     * @return array<int, mixed>
-     */
-    public function toArray(): array
-    {
-        return [];
-    }
-
     /**
      * Compute the factorial of an integer.
      *
@@ -127,7 +57,7 @@ public function toArray(): array
      * @return int
      *             The factorial of $n
      */
-    protected function fact($n, $total = 1): int
+    protected function fact(int $n, int $total = 1): int
     {
         return (2 > $n) ? $total : $this->fact($n - 1, $total * $n);
     }