@Test
public void createResponseWithoutOnlyDefaults() throws Exception {

    // create a submit request
    SubmitRequest submit = new SubmitRequest();
    SubmitResponse submitResponse = submit.createResponse();
    Assert.assertEquals(null, submitResponse.getReferenceId());
    // make sure defaults are 0 and "OK"
    Assert.assertEquals(new Integer(0), submitResponse.getErrorCode());
    Assert.assertEquals("OK", submitResponse.getErrorMessage());
}