利用Mockito实现Junits

Question

Webservice->实现层->Dao层。

实现层实际上将DAO对象转换为业务对象，并将其传递回服务。

我的目标是为服务层编写JUnit。现在，为了实现这一点，我使用@mock和@injectmocks来模拟实现层中的值，因为实现层使用的是spring注释字段。但每次测试时都会出现空指针异常。下面是代码

@Override
    public FicheSolvaDetailDTO consulterFicheSolvabiliteTriennale(Long numFicheSolva) throws MetierException, TechniqueException {
        try {

            LOGGER.info("Consultation de la fiche de solvabilité triennale n° " + numFicheSolva);
            return boToMessageConverter.convertFicheSolvabiliteDetaillee(manager.consulterFicheSolvabiliteTriennale(numFicheSolva));

        } catch (com.accord.contrat.business.exception.MetierException e) {
            throw new MetierException(e.getMessage(), e);
        } catch (com.accord.contrat.business.exception.TechniqueException e) {
            throw new TechniqueException(e.getMessage(), e);
        }
    }

@Override
    public FicheSolvaDetailDTO consulterFicheSolvabiliteTriennale(Long numFicheSolva) throws MetierException, TechniqueException {
        try {

            LOGGER.info("Consultation de la fiche de solvabilité triennale n° " + numFicheSolva);
            return boToMessageConverter.convertFicheSolvabiliteDetaillee(manager.consulterFicheSolvabiliteTriennale(numFicheSolva));

        } catch (com.accord.contrat.business.exception.MetierException e) {
            throw new MetierException(e.getMessage(), e);
        } catch (com.accord.contrat.business.exception.TechniqueException e) {
            throw new TechniqueException(e.getMessage(), e);
        }
    }

测试类：

@RunWith(MockitoJUnitRunner.class)
public class SolvabiliteWSImplTest {
    @InjectMocks
    private static SolvabiliteWSImpl mockedSolvabiliteWSImpl;
    private static FicheSolvabiliteDetailBO ficheSolvabiliteDetailBO;

    @Mock
    IFicheSolvaManager managera;
    @Mock
    BOToMessageConverter boToMessageConverter;

    @Mock
    MessageToBOConverter messageToBo;

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

    @Before
    public void setUp() throws MetierException, TechniqueException{

        ficheSolvabiliteDetailBO = new FicheSolvabiliteDetailBO();
        ficheSolvabiliteDetailBO.setCodeSituationFamilialeSouscripteur("1");
        ficheSolvabiliteDetailBO.setCodeSituationLocativeFoyer("1");
        ficheSolvabiliteDetailBO.setNumCommercant(705l);
        ficheSolvabiliteDetailBO.setNumEngagement(44686301l);
        ficheSolvabiliteDetailBO.setNumFicheSolva(138553l);

        when(managera.consulterFicheSolvabiliteTriennale(138553l)).thenReturn(ficheSolvabiliteDetailBO);

    }



    @Test
    public void testConsulterFicheSolvaDetailDTO() throws MetierException, TechniqueException{
        long numFicheSolve = 138553l;
        assertNotNull(mockedSolvabiliteWSImpl.consulterFicheSolvabiliteTriennale(numFicheSolve));
}

但它并不是在嘲弄价值，如

当（managera.consulterfichesolvabilitetriennale(138553L)).thenreturn(ficheSolvabiliteDetailBO）；

当调用上述方法时，它应该返回给我ficheSolvabiliteDetailBO。但是函数进一步进入这个方法，然后给我空指针异常，这意味着它不是在嘲弄？

请建议一种可能的测试方法。

Answer 1

a）你有

@InjectMocks
private static SolvabiliteWSImpl mockedSolvabiliteWSImpl;

在静态字段上。这不起作用--将其更改为实例字段。JUnit将为每次测试运行创建一个新实例。

b）你不需要

MockitoAnnotations.initMocks(this);

@RunWith(MockitoJUnitRunner.class)