Refactor Code and Improve Test Cases

### Changed
- Refactored test cases.

CHANGELOG.md

@@ -18,13 +18,15 @@ This is NOT the changelog of the WordPress Plugin you ultimately develop!
 - Updated minimum WordPress version requirement to 4.0.
 - Refactored how metaboxes are registered and saved, improving code clarity .
 - Renamed keys for shortcodes, taxonomies, and custom post types using a configurable slug.
-- Replaced specific metabox class with a more generic example .
+- Replaced specific metabox class with a more generic example.
+- Refactored Test Cases.
 
 ### Removed 
 - Unused function imports across multiple files.
 
 ### Fixed
 - Incorrect author information in several files.
+- Require `wp-admin/includes/file.php` if WP_Filesystem is unavailable.
 
 ## [v5-alpha] - 2024-05-26
 

tests/bootstrap.php

@@ -54,8 +54,8 @@
 }
 tests_add_filter(
 	'muplugins_loaded',
-	function() use ( $_plugin_slug ) {
-		require_once dirname( dirname( __FILE__ ) ) . '/src/' . $_plugin_slug . '.php';
+	function () use ( $_plugin_slug ) {
+		require_once dirname( __DIR__ ) . '/src/' . $_plugin_slug . '.php';
 	}
 );
 

tests/class-filesystem-utilitytest.php

@@ -1,4 +1,25 @@
 <?php
+/**
+ * The PHPUnit Tests for the WP_Filesystem_Utility class
+ *
+ * This file adds test cases for the WP_Filesystem_Utility class.
+ * This file includes:
+ * - Strict Typing declaration,
+ * - Definition of WP_Filesystem_UtilityTest,
+ * - One testcase method for the Base64 Encoded Method of the WP_Filesystem_Utility class.
+ *
+ * @link    https://site.tld
+ * @since   1.0.0 Introduced on 2023-08-01 15:30
+ * @package Plugins\PluginName\Tests
+ * @author  Your Name <[email protected]>
+ */
+
+/**
+ * Declare strict typing
+ *
+ * @see https://www.php.net/manual/en/language.types.declarations.php#language.types.declarations.strict
+ */
+declare( strict_types = 1 );
 
 namespace Company\Plugins\PluginName\Tests;
 
@@ -7,24 +28,22 @@
 
 class WP_Filesystem_UtilityTest extends TestCase {
 
-    public function testGetBase64EncodedContents() {
-        $filesystemUtility = new WP_Filesystem_Utility();
+	public function testGetBase64EncodedContents() {
+		$filesystemUtility = new WP_Filesystem_Utility();
 
-        // Replace with the actual path to the SVG file you want to test
-        $svgFilePath = __DIR__ . '/../src/public/icons/cpt-icon.svg';
+		// Replace with the actual path to the SVG file you want to test
+		$svgFilePath = __DIR__ . '/../src/public/icons/cpt-icon.svg';
 
-        // Ensure that the file exists before testing
-        $this->assertFileExists($svgFilePath);
+		// Ensure that the file exists before testing
+		$this->assertFileExists( $svgFilePath );
 
-        // Get the expected base64 encoded content
-        $expectedBase64Content = base64_encode(file_get_contents($svgFilePath));
+		// Get the expected base64 encoded content
+		$expectedBase64Content = base64_encode( file_get_contents( $svgFilePath ) );
 
-        // Call the method to get base64 encoded content
-        $actualBase64Content = $filesystemUtility->get_base64_encoded_contents($svgFilePath);
+		// Call the method to get base64 encoded content
+		$actualBase64Content = $filesystemUtility->get_base64_encoded_contents( $svgFilePath );
 
-        // Check if the actual content matches the expected content
-        $this->assertEquals($expectedBase64Content, $actualBase64Content);
-    }
-
-    // Add more test cases as needed for other methods/functions in WP_Filesystem_Utility
+		// Check if the actual content matches the expected content
+		$this->assertEquals( $expectedBase64Content, $actualBase64Content );
+	}
 }