ci: allow to lint of config files and tests files

.github/workflows/php.yml

@@ -27,11 +27,17 @@ jobs:
         restore-keys: |
           ${{ runner.os }}-php-
 
-    - name: PHP Lint
+    - name: PHP Lint in trunk/src/ directory
       run: find trunk/src/ -name "*.php" -print0 | while IFS= read -r -d '' file; do php -l "$file" || exit 1; done
 
+    - name: PHP Lint trunk/config/ directory
+      run: find trunk/config/ -name "*.php" -print0 | while IFS= read -r -d '' file; do php -l "$file" || exit 1; done
+
+    - name: PHP Lint tests/ directory
+      run: find tests/ -name "*.php" -print0 | while IFS= read -r -d '' file; do php -l "$file" || exit 1; done
+
     - name: Install Dependencies
       run: composer install -q --no-ansi --no-interaction --no-scripts --no-progress --prefer-dist
 
     - name: Execute tests (Smoking Tests and unit tests) via PHPUnit
-      run: vendor/bin/phpunit  --bootstrap tests/bootstrap.php tests --testdox  --coverage-text tests
+      run: vendor/bin/phpunit --testdox  --coverage-text

phpunit.xml.dist

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- https://phpunit.readthedocs.io/en/latest/configuration.html -->
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.1/phpunit.xsd" backupGlobals="false" colors="true"
+         bootstrap="tests/bootstrap.php">
+    <php>
+        <ini name="display_errors" value="1"/>
+        <ini name="error_reporting" value="-1"/>
+        <server name="SHELL_VERBOSITY" value="-1"/>
+    </php>
+    <testsuites>
+        <testsuite name="Project Test Suite">
+            <directory>tests</directory>
+        </testsuite>
+    </testsuites>
+    <include>
+        <directory suffix=".php">trunk/src</directory>
+    </include>
+    <source>
+        <include>
+            <directory suffix=".php">trunk/src</directory>
+        </include>
+    </source>
+</phpunit>

tests/bootstrap.php

@@ -17,4 +17,4 @@
 
 ${'display-metadata'} = $plugin_services['plugin'](base_dir: $plugin_dir, services: $plugin_services);
 
-// Throw tests with  vendor/bin/phpunit --bootstrap tests/bootstrap.php tests
+// Throw tests with  vendor/bin/phpunit --testdox