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                <?php // phpcs:ignore WordPress.Files.FileName  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * File loader test suite.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @package automattic/jetpack-autoloader  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Jetpack\AutoloaderTestData\Plugin\Test;  | 
            
                            
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                use PHPUnit\Framework\TestCase;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Test suite class for the Autoloader part that handles file loading.  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                 */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                class WP_Test_Manifest_Handler extends TestCase { | 
            
            
                                                                        
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * Tests whether registering a manifest file registers the individual class file.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
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                View Code Duplication | 
                	public function test_registering_adds_to_the_input_array() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$input_array      = array();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$manifest_handler = new Manifest_Handler(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				TEST_DATA_PATH . '/plugins/plugin_current',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			new Version_Selector()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$manifest_handler->register_plugin_manifests( 'vendor/composer/jetpack_autoload_classmap.php', $input_array );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->assertArrayHasKey( Test::class, $input_array );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->assertEquals( '1.0.0.0', $input_array[ Test::class ]['version'] );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->assertEquals( $input_array[ Test::class ]['path'], TEST_DATA_PATH . '/plugins/plugin_current/includes/class-test.php' );  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                	}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * Tests whether registering a manifest file will override already registered paths with newer ones.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
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                View Code Duplication | 
                	public function test_registering_adds_latest_version_to_the_input_array() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$input_array      = array();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$manifest_handler = new Manifest_Handler(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				TEST_DATA_PATH . '/plugins/plugin_newer',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				TEST_DATA_PATH . '/plugins/plugin_current',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			new Version_Selector()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$manifest_handler->register_plugin_manifests( 'vendor/composer/jetpack_autoload_classmap.php', $input_array );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->assertArrayHasKey( Test::class, $input_array );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->assertEquals( '2.0.0.0', $input_array[ Test::class ]['version'] );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->assertEquals( $input_array[ Test::class ]['path'], TEST_DATA_PATH . '/plugins/plugin_newer/includes/class-test.php' );  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                	}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * Tests whether registering a manifest file ignores the dev version of the file when  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * JETPACK_AUTOLOAD_DEV is not set.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
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                View Code Duplication | 
                	public function test_registering_does_not_add_dev_versions_to_the_input_array() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$input_array      = array();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$manifest_handler = new Manifest_Handler(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				TEST_DATA_PATH . '/plugins/plugin_dev',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				TEST_DATA_PATH . '/plugins/plugin_current',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			new Version_Selector()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$manifest_handler->register_plugin_manifests( 'vendor/composer/jetpack_autoload_classmap.php', $input_array );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->assertArrayHasKey( Test::class, $input_array );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->assertEquals( '1.0.0.0', $input_array[ Test::class ]['version'] );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->assertEquals( $input_array[ Test::class ]['path'], TEST_DATA_PATH . '/plugins/plugin_current/includes/class-test.php' );  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                	}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * Tests whether registering a manifest file prioritizes the dev version of the file when  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * JETPACK_AUTOLOAD_DEV is set to true.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @runInSeparateProcess  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @preserveGlobalState disabled  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public function test_registering_adds_the_dev_version_to_the_input_array_with_constant() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$input_array      = array();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$manifest_handler = new Manifest_Handler(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				TEST_DATA_PATH . '/plugins/plugin_dev',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				TEST_DATA_PATH . '/plugins/plugin_current',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			new Version_Selector()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		defined( 'JETPACK_AUTOLOAD_DEV' ) || define( 'JETPACK_AUTOLOAD_DEV', true );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$manifest_handler->register_plugin_manifests( 'vendor/composer/jetpack_autoload_classmap.php', $input_array );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->assertArrayHasKey( Test::class, $input_array );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->assertEquals( 'dev-main', $input_array[ Test::class ]['version'] );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->assertEquals( $input_array[ Test::class ]['path'], TEST_DATA_PATH . '/plugins/plugin_dev/includes/class-test.php' );  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                	}  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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Let’s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let’s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: