/**
  * Tests conversion of {@link ThreeDSecureRequest} from XML file for verify sig.
  */
 public function testThreeDSecureRequestSigXmlFromFile()
 {
     $path = SampleXmlValidationUtils::THREE_D_SECURE_VERIFY_SIG_REQUEST_XML_PATH;
     $prefix = __DIR__ . '/../../../resources';
     $xml = file_get_contents($prefix . $path);
     //unmarshal back to response
     /* @var ThreeDSecureRequest $fromXmlResponse */
     $fromXmlResponse = new ThreeDSecureRequest();
     $fromXmlResponse = $fromXmlResponse->fromXml($xml);
     SampleXmlValidationUtils::checkUnmarshalledVerifySigRequest($fromXmlResponse, $this);
 }