Check coding style when running tests

Author: mlocati

.github/workflows/test.yml

@@ -36,6 +36,9 @@ jobs:
           fetch-depth: 0
       - name: Install Composer dependencies (including dev, preferring source)
         run: composer install --prefer-source --optimize-autoloader --ansi --no-interaction
+      - name: Check coding style
+        if: matrix.os == 'ubuntu-latest' && matrix.php-version == '7.2'
+        run: ./vendor/bin/php-cs-fixer fix --path-mode=intersection --config=./.php_cs.dist --dry-run --using-cache=no --diff --diff-format=udiff --ansi --no-interaction .
       - name: Run Atoum
         run: php ./vendor/atoum/atoum/scripts/coverage.php --format xml --output clover.xml
       - name: Install Composer dependencies (excluding dev)