Test update

Author: PDowney

.github/workflows/integration-test.yml

@@ -32,6 +32,7 @@ jobs:
           php_version: ${{ matrix.php-version }}
           wordpress_version: ${{ matrix.wordpress-version }}
           plugin_slug: 'simple-wp-optimizer'
+          phpunit_config: 'phpunit.xml'
 
       - name: Add labels to any PRs
         if: github.event_name == 'pull_request'

CHANGELOG.md

@@ -17,6 +17,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fixed action parameters using the correct input names: php_version, wordpress_version, plugin_slug
 - Added automated PR labeling with "automated", "documentation", and "plugin update" tags
 - Set up proper GitHub permissions for integration test workflow
+- Created test infrastructure with PHPUnit Polyfills for cross-version compatibility
+- Added basic plugin loading tests and WordPress environment configuration
 
 ## [1.5.4] - 2025-05-04
 ### Changed

phpunit.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0"?>
+<phpunit
+	bootstrap="tests/bootstrap.php"
+	backupGlobals="false"
+	colors="true"
+	convertErrorsToExceptions="true"
+	convertNoticesToExceptions="true"
+	convertWarningsToExceptions="true"
+	>
+	<testsuites>
+		<testsuite name="Simple WP Optimizer Tests">
+			<directory prefix="test-" suffix=".php">./tests/</directory>
+		</testsuite>
+	</testsuites>
+	<coverage>
+		<include>
+			<directory suffix=".php">./</directory>
+		</include>
+		<exclude>
+			<directory>./tests</directory>
+			<directory>./vendor</directory>
+		</exclude>
+	</coverage>
+	<php>
+		<env name="WP_PHPUNIT__TESTS_CONFIG" value="tests/wp-config.php" />
+	</php>
+</phpunit>

tests/bootstrap.php

@@ -0,0 +1,44 @@
+<?php
+/**
+ * PHPUnit bootstrap file.
+ *
+ * @package Simple_WP_Optimizer
+ */
+
+// Load the Composer autoloader.
+require_once dirname( __DIR__ ) . '/vendor/autoload.php';
+
+// Load the PHPUnit Polyfills for cross-version compatibility.
+require_once dirname( __DIR__ ) . '/vendor/yoast/phpunit-polyfills/phpunitpolyfills-autoload.php';
+
+// Make sure the tests directory is in the include path.
+if ( ! defined( 'WP_CONTENT_DIR' ) ) {
+    define( 'WP_CONTENT_DIR', dirname( __DIR__ ) . '/tests/wp-content' );
+}
+
+if ( ! defined( 'WP_PLUGIN_DIR' ) ) {
+    define( 'WP_PLUGIN_DIR', WP_CONTENT_DIR . '/plugins' );
+}
+
+// Define a test plugin directory name.
+if ( ! defined( 'TEST_PLUGIN_DIR' ) ) {
+    define( 'TEST_PLUGIN_DIR', dirname( __DIR__ ) );
+}
+
+// Manually load the plugin being tested.
+function _manually_load_plugin() {
+    require dirname( __DIR__ ) . '/simple-wp-optimizer.php';
+}
+
+// Start up the WP testing environment.
+// Ideally, this would be automatically handled by the integration test action.
+// If WP_TESTS_DIR is defined, we'll use it, otherwise we'll set up a basic mock.
+if ( defined( 'WP_TESTS_DIR' ) && file_exists( WP_TESTS_DIR . '/includes/bootstrap.php' ) ) {
+    require WP_TESTS_DIR . '/includes/bootstrap.php';
+    tests_add_filter( 'muplugins_loaded', '_manually_load_plugin' );
+} else {
+    // Simple mock class if WP test suite isn't available
+    class WP_UnitTestCase extends \Yoast\PHPUnitPolyfills\TestCases\TestCase {
+        // Include test helper methods here
+    }
+}

tests/test-plugin-loading.php

@@ -0,0 +1,30 @@
+<?php
+/**
+ * Basic integration test for Simple WP Optimizer
+ *
+ * @package Simple_WP_Optimizer
+ */
+
+/**
+ * Class Test_Simple_WP_Optimizer
+ */
+class Test_Simple_WP_Optimizer extends WP_UnitTestCase {
+
+    /**
+     * Test that the plugin can be loaded correctly.
+     */
+    public function test_plugin_loads() {
+        // Check if the plugin main class or function exists
+        $this->assertTrue(function_exists('simple_wp_optimizer_init') || class_exists('Simple_WP_Optimizer'), 
+            'Plugin does not appear to be loaded correctly');
+    }
+
+    /**
+     * A basic test ensuring that the WordPress version is set.
+     */
+    public function test_wp_version() {
+        $this->assertTrue(defined('ABSPATH'), 'WordPress not loaded properly');
+        // Use assertNotEmpty to accommodate PHPUnit versions (polyfill handles compatibility)
+        $this->assertNotEmpty(get_bloginfo('version'), 'WordPress version not available');
+    }
+}

tests/wp-config.php

@@ -0,0 +1,32 @@
+<?php
+/**
+ * WordPress test environment configuration.
+ *
+ * @package Simple_WP_Optimizer
+ */
+
+// Test with WordPress debug mode on
+define( 'WP_DEBUG', true );
+
+// Database settings - will be overridden by the test framework
+define( 'DB_NAME', 'wordpress_test' );
+define( 'DB_USER', 'root' );
+define( 'DB_PASSWORD', '' );
+define( 'DB_HOST', 'localhost' );
+define( 'DB_CHARSET', 'utf8' );
+define( 'DB_COLLATE', '' );
+
+$table_prefix = 'wptests_';
+
+define( 'WP_TESTS_DOMAIN', 'example.org' );
+define( 'WP_TESTS_EMAIL', '[email protected]' );
+define( 'WP_TESTS_TITLE', 'Test Blog' );
+
+define( 'WP_PHP_BINARY', 'php' );
+
+// For integration testing
+define( 'WPLANG', '' );
+define( 'WP_CONTENT_DIR', dirname( __DIR__ ) . '/wp-content' );
+
+// Prevent filesystem operations in tests
+define( 'FS_METHOD', 'direct' );