@Test
public void whenToApiEntityFromDomainEntity() {

    HandicapGroupSet domainEntity = DomainEntityTestUtils.fullHandicapGroupSet();
    HandicapGroupSetApiEntity expected = ApiEntityTestUtils.fullHandicapGroupSet();
    HandicapGroupSetApiEntity actual = mapper.toApiEntity(domainEntity);
    assertThat(actual).isEqualTo(expected);
}