间谍对莫克托的依赖

Question

我对Mockito和带有“间谍”注释的字段有点混乱。

我想测试这个类：

@Service
public class CategoryServiceImpl implements CategoryService {

    @Autowire
    private CategoryRepository categoryRepository;

    private BoundMapperFacade<CategoryDTO, Category> boundMapper;

    @Autowired
    public void createMapper(final Mapper mapper) {

        boundMapper = mapper.getMapperFactory().getMapperFacade(
                CategoryDTO.class, Category.class);
    }

    // Rest of methods...
} 

因此，我创建了一个测试类，如下所示:

@RunWith(MockitoJUnitRunner.class)
public class CategoryServiceImplTest {

    @Mock    
    private CategoryRepository categoryRepository;

    @Spy
    private Mapper mapper;

    @Spy
    private BoundMapperFacade<CategoryDTO, Category> boundMapper;

    @InjectMocks
    private CategoryServiceImpl categoryServiceImpl;    

    // Rest of methods...
} 

当Mockito实例categoryServiceImpl将categoryRepository作为模拟类注入时，但它不知道如何创建boundMapper。这个类依赖于mapper，所以我重写了代码：

@RunWith(MockitoJUnitRunner.class)
public class CategoryServiceImplTest {

    @Mock    
    private CategoryRepository categoryRepository;

    @Spy
    private Mapper mapper;

    private BoundMapperFacade<CategoryDTO, Category> boundMapper = spy(mapper.getMapperFactory().getMapperFacade(
                CategoryDTO.class, Category.class));

    @InjectMocks
    private CategoryServiceImpl categoryServiceImpl;    

    // Rest of methods...
} 

但是现在的问题是在Mockito注入映射器之前执行了边界映射器的创建，所以我得到了一个NullPointerException。

那么，有没有办法创建一个依赖于另一个间谍类的间谍类，并最终将最后一个注入标记为@InjectMocks的字段中？

Answer 1

如果您有一个依赖于mock或spy的spy，我见过的唯一方法是在< code>@Before修饰函数中。

@RunWith(MockitoJUnitRunner.class)
public class CategoryServiceImplTest {

    @Mock    
    private CategoryRepository categoryRepository;

    @Spy
    private Mapper mapper;

    private BoundMapperFacade<CategoryDTO, Category> boundMapper = ;

    @InjectMocks
    private CategoryServiceImpl categoryServiceImpl;   

    @Before
    public void setup() {
        boundMapper = spy(mapper
                            .getMapperFactory()
                            .getMapperFacade(CategoryDTO.class, Category.class)
                         );
    }

    // Rest of methods...
} 

我不确定这如何与@InjectMocks一起工作，所以这可能是需要研究的东西。如果类别服务Impl依赖于它，则您可以在初始化边界映射器后运行它的非装饰器版本。