/** {@inheritDoc} */
  public void testMessageUnmarshall() {
    ErrorResponse response = (ErrorResponse) unmarshallMessage(messageFile);

    String mode = response.getMode();
    assertEquals(
        "NegativeAssertion mode was " + mode + ", expected " + expectedMode, expectedMode, mode);

    String error = response.getError();
    assertEquals(
        "ErrorResponse error was " + error + ", expected " + expectedError, expectedError, error);

    String contact = response.getContact();
    assertEquals(
        "ErrorResponse contact was " + contact + ", expected " + expectedContact,
        expectedContact,
        contact);

    String reference = response.getReference();
    assertEquals(
        "ErrorResponse reference was " + reference + ", expected " + expectedReference,
        expectedReference,
        reference);
  }