Question

我正在为一个控制器编写单元测试，这是我的代码

public class MyController
{
    @Inject
    private MyService myService;

    public List<Car> getCars()
    {
        myService.getCars();
    }
}

public class MyServiceImpl implements MyService 
{
    @Inject
    AService aService;

    @Inject
    BService bService;

    public List<Car> getCars()
    {
        aService.getCars();
    }
}


Public class MyControllerTest
{

    private MockMvc standAloneMockMvc;

    @InjectMocks
    MyController myController;

    @Mock
    private MyService myService;

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

        this.standAloneMockMvc = MockMvcBuilders.standaloneSetup(myController).build();

    }

    @Test
    public void testGetAllCars() throws Exception
    {
        String url = "/car/list";

        List<Car> listCars = new ArrayList<Car>();
        Car car = new Car();
        listCars.add(car);

        Mockito.when(myService.getCars()).thenReturn(listCars);

        MvcResult result = standAloneMockMvc.perform(MockMvcRequestBuilders.get(url))
        .andDo(MockMvcResultHandlers.print())
        .andExpect(MockMvcResultMatchers.status().isOk())
        .andReturn();

        String jsonResult = result.getResponse().getContentAsString();
    }
}

在尝试加载aService和bService时，我在MyControllerTest中为myService创建bean时遇到错误。

任何人都可以帮忙吗？还有其他人遇到类似的问题吗？

堆栈跟踪：

Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.xyz.AService com.xyz.aService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.xyz.AService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@javax.inject.Inject()}  
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:571)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)

Answer 1

您需要提供完全所有的模拟实现，即。您的测试类无法弄清楚这些AService aService是什么; BService bService;是

@mock将查看要呈现的所有字段（模拟）

因此，您可以为他们提供模拟提供模拟实现

...

private MockMvc standAloneMockMvc;

    @InjectMocks
    MyController myController;

    @Mock
    private MyService myService;

    @Mock
    AService aService;

    @Mock
    BService bService;

...

在基于mockito的junit测试类中注入嵌套依赖项

1 个答案: