configure( [ 'preferences' => [ \Magento\Ui\Config\Reader\FileResolver::class => FileResolverStub::class ] ] ); $this->reader = $objectManager->create( Reader::class, [ 'fileName' => 'test_component.xml' ] ); } public function tearDown() { $objectManager = Bootstrap::getObjectManager(); $objectManager->configure( [ 'preferences' => [ \Magento\Ui\Config\Reader\FileResolver::class => \Magento\Ui\Config\Reader\FileResolver::class ] ] ); parent::tearDown(); } /** * @return void */ public function testReader() { $mergedConfiguration = include __DIR__ . '/../_files/expected_result_configuration.php'; $readConfiguration = $this->reader->read(); $this->assertEquals($mergedConfiguration, $readConfiguration); } }