How to mock model in service test?-CodePudding

I try write service test, for example, I have this ExamServiceImpl:

@Service
public class ExamServiceImpl implements ExamService {

@Autowired
private final SubjectService scoreService;
private final ScoreDAO scoreDAO;

@Autowired
public ExamServiceImpl(ScoreDAO scoreDAO) {
    this.scoreDAO = scoreDAO;
}

@Override
public ResponseModel insertScore(RequestModel request) throws IOException {
    SubjectModel subject = scoreService.getNameSubject(request);

    ScoreModel score = new ScoreModel();

    score.setStudentName(request.getStudentName);
    score.setScore(request.getStudentScore);
    score.setSubject(subject.getName);

    int result = scoreDAO.insert(score);

    return result;
    }
}

Sample my test:

@SpringBootTest
public class ExamServiceImplTest {

@MockBean
private ScoreDAO scoreDAO;

@Autowired
private SubjectService subjectService;

@Autowired
private ExamService examService;


@Test
void insertScoreTest() {
    SubjectModel resFromSubject = new SubjectModel();
    resFromSubject.setSubject("Math");

    Mockito.when(subjectService.getNameSubject(new RequestModel())).thenReturn(resFromSubject);
    Mockito.when(scoreDAO.insert(new ScoreModel())).thenReturn(1);

    int resultTest = examService.insertScore(new RequestModel());
    assertSame(ex, 1);

}

But output resultTest is 0. I try debugger, I found mock scoreDAO.insert() return 0 >> is not working.

And I try like this:

@SpringBootTest
@RunWith(MockitoJUnitRunner.class)
public class ExamServiceImplTest {

@Mock
private ScoreDAO scoreDAO;

@Mock
private SubjectService subjectService;

@InjectMocks
private ExamService examService = ExamServiceImpl(scoreDAO);

@Before 
public void setup() {
    MockitoAnnotations.initMocks(this); 
}

@Test
void insertScoreTest() {
    SubjectModel resFromSubject = new SubjectModel();
    resFromSubject.setSubject("Math");

    Mockito.when(subjectService.getNameSubject(new RequestModel())).thenReturn(resFromSubject);
    Mockito.when(scoreDAO.insert(new ScoreModel())).thenReturn(1);

    int resultTest = examService.insertScore(new RequestModel());
    assertSame(ex, 1);

}

It's not work too.

Please, could you help write me test methods? I covered with tests more simple other services.

Thank you!

CodePudding user response：

It doesn't work because new ScoreModel() inside Mockito.when() and inside ExamServiceImpl are two different objects. If you want scoreDAO to return 1 for every ScoreModel passed to it you can use:

Mockito.when(scoreDAO.insert(Mockito.any(ScoreModel.class)).thenReturn(1);