Validate composer files

Author: Aeliot-Tm

.github/workflows/automated_testing.yaml

@@ -4,6 +4,46 @@ on:
   push:
 
 jobs:
+
+  composer:
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - php-version: '7.4'
+            lock-version: '3.4'
+          - php-version: '7.4'
+            lock-version: '4.4'
+          - php-version: '8.0'
+            lock-version: '5.0'
+          - php-version: '8.0'
+            lock-version: '5.4'
+          - php-version: '8.0'
+            lock-version: '6.0'
+          - php-version: '8.1'
+            lock-version: '6.4'
+          - php-version: '8.2'
+            lock-version: '7.0'
+
+        steps:
+          - uses: 'shivammathur/setup-php@v2'
+            with:
+              php-version: ${{ matrix.php-version }}
+              tools: composer
+
+          - uses: actions/checkout@v3
+
+          - name: Set versions
+            run: cp composer.${{ matrix.lock-version }}.lock composer.lock
+
+          - name: Install dependencies
+            uses: ramsey/composer-install@v2
+
+          - name: Validate composer.json and composer.lock
+            run: composer validate --strict
+
   phpunit:
     runs-on: ubuntu-latest