@Test
public void whenToDomainAddPayloadFromApiAddRequest() throws EntityNotFoundException {

    AddRegistrationRequest apiAddRequest = ApiRequestTestUtils.fullAddRegistration();
    RegistrationAddPayload expected = DomainPayloadTestUtils.fullRegistrationAdd();
    expected.setEvent(null);
    RegistrationAddPayload actual = mapper.toDomainAddPayload(apiAddRequest, TestConstants.EVENT_ID);
    assertThat(actual).isEqualTo(expected);
}