getDriver(); $ref = new \ReflectionMethod($driver, 'loadMetadataFromFile'); $ref->setAccessible(true); $ref->invoke($driver, new \ReflectionClass('stdClass'), __DIR__.'/xml/invalid.xml'); } protected function getDriver() { return new XmlDriver(new FileLocator(array( 'JMS\SerializerBundle\Tests\Fixtures' => __DIR__.'/xml', ))); } }