How to tests and mock mapstruct converter?

问题

I use mapstruct frameword on my java gradle project and it works perfectly but i just want to test :

mapstruct generated sources (converter)
service class (call mapstrcut converter)

I have try to use an other topic to do this but it not working for me.

This is my mapstruct interface :

@Mapper(unmappedTargetPolicy = ReportingPolicy.IGNORE)
public interface RisqueBOConvertisseur extends BOConvertisseur<RisqueARS, RisqueBO> {
    @Override
    RisqueBO convertirDaoVersBo(RisqueARS dao);

    @Override
    RisqueARS convertirBoVersDao(RisqueBO bo);
}

This is my service class :

@Service public class ServiceRisqueImpl implements ServiceCRUD {

@Autowired
private RisqueRepository risqueRepo;

private RisqueBOConvertisseur risqueConv = Mappers.getMapper(RisqueBOConvertisseur.class);

private final String nomObjet = "RisqueARS";

public void setRisqueConv(RisqueBOConvertisseur risqueConv) {
    this.risqueConv = risqueConv;
}

@Autowired
private DossierInternetResource dossierInternet;

@Override
public RisqueBO recupererParId(String id) {
    // Récupère le bloc de la base de données
    final RisqueARS risqueDAO = risqueRepo.findOne(id);

    // Si aucun résultat -> on déclenche une exception
    if (null == risqueDAO) {
        // Déclenche une exception
        throw new ObjectNotFoundException(construireMessageErreur(this.nomObjet, "L'objet risque correspondant à l'id %s, n'existe pas.", id));
    }

    return risqueConv.convertirDaoVersBo(risqueDAO);
}

}

When i try to test my service :

@RunWith(MockitoJUnitRunner.class)

@SpringBootTest(classes = {ServiceRisqueImpl.class, RisqueBOConvertisseurImpl.class, RisqueBOConvertisseur.class}) public class ServiceRisqueImplTest {

@Mock
private RisqueRepository risqueRepo;

@InjectMocks
ServiceRisqueImpl serviceRisque;

@Mock
private DossierInternetResource dossierInternet;

@Mock
private RisqueBOConvertisseur risqueConv;

@Before
public void initMocks() {
    MockitoAnnotations.initMocks(this);
    serviceRisque.setRisqueConv(risqueConv);
}

@Test(expected = ObjectNotFoundException.class)
public void testRecupererParIdQuandIdInconnu() {
    // INITIALISATION
    // Mock la méthode DAO de retour des données en base
    when(risqueRepo.findOne(anyString())).thenReturn(null);

    // PROCESSUS
    serviceRisque.recupererParId("5");
}

The junit return me

However the constructor or the initialization block threw an exception : java.lang.ClassNotFoundException: Cannot find implementation for ***.convertisseur.RisqueBOConvertisseur

I have the same error with my converter test :

@RunWith(SpringRunner.class)
@SpringBootTest(classes = {RisqueBOConvertisseur.class, RisqueBOConvertisseurImpl.class})
public class RisqueBOConvertisseurTest {

    @Autowired
    private RisqueBOConvertisseur configurationMapper;

    private final RisqueBOConvertisseur risqueConv = Mappers.getMapper(RisqueBOConvertisseur.class);

    @Test
    public void test() {
        // INITIALISATION
        final RisqueBO risqueBO = new RisqueBO("950095f7-62e7-42e5-a5ae-0d7292e7ad00", "D1", ProfilEpargnant.PROFIL_EPARGNANT_SECURISE,
                ComportementFaceRisques.REACTION_BAISSE_MARCHE_PANIQUE);

        // PROCESSUS
        // final RisqueARS risqueARS =
        // RisqueBOConvertisseur.INSTANCE.convertirBoVersDao(risqueBO);

        final RisqueARS risqueARS = configurationMapper.convertirBoVersDao(risqueBO);

        // VERIFICATIONS
        assertEquals(risqueBO.getIdRisque(), risqueARS.getIdRisque());
        assertEquals(risqueBO.getIdDossierInternet(), risqueARS.getIdDossierInternet());
        assertEquals(risqueBO.getCodeComportementRisque(), risqueARS.getCodeComportementRisque());
        assertEquals(risqueBO.getCodeProfilEpargnant(), risqueARS.getCodeProfilEpargnant());
    }

}

How can i test my generated sources converter with mapStruct ?

Tanks !

回答1:

My strategy would be to

mock the mapper as well in your business logic and test it as a separate component. MapStruct can generate spring annotations. Just use @Mapper( componentModel = "spring" ) to let your DI framework inject the mapper.

Your class would look like:

@Service public class ServiceRisqueImpl implements ServiceCRUD {

@Autowired
private RisqueRepository risqueRepo;

@Autowired
private RisqueBOConvertisseur risqueConv;

//...

and your test for ServiceRisqueImpl

@Mock
private RisqueRepository risqueRepo;

@Mock
private DossierInternetResource dossierInternet;

@Mock
private RisqueBOConvertisseur risqueConv;

@InjectMocks
ServiceRisqueImpl serviceRisque;

You'll need to mock the mapper as well now, but in doing so, you have far more fine-grained control over your business logic that calls the mapper and uses its result. After all, you can verify the call and mock the result however you like.
And you need to add a separate test for your mapper and test the mapping logic. I usually to roundtrip mapping so: in -> map -> reverseMap -> out and use assertj property assertion to see if in is the same as out.

来源：https://stackoverflow.com/questions/60986556/how-to-tests-and-mock-mapstruct-converter

标签

java

junit

mockito

mapstruct