爲什麼@InjectMocks控制器的響應在我使用@JsonView時被Mockito變爲空？

我得到一個空的JSON {}（通過actions.andReturn().getResponse().getContentAsString()驗證），當我通過mockMvc.perform(post...))測試儘管的方法實際上返回響應（我看到這個的時候我調試和單步執行代碼，這是一個有效的，充滿響應的響應對象，但是當mockito中的某些代碼正在製作modalAndView時突然變爲空 - 爲什麼它會這樣做？）。爲什麼@InjectMocks控制器的響應在我使用@JsonView時被Mockito變爲空？

測試類：

@RunWith(MockitoJUnitRunner.class) 
public class Test 
{ 
    //Also tried @Mock 
    @InjectMocks 
    private MyService myService; 

    @Mock 
    private MyDAO myDAO; 

    //@Autowired 
    @InjectMocks 
    private MyController myController; 

    @Before 
    public void setup() { 

     //Build the controller mock handler 
     mockMvc = MockMvcBuilders 
      .standaloneSetup(myController) 
      .setControllerAdvice(new ExceptionHandler()) 
      .build(); 
    } 

    @org.junit.Test 
    public void testMyEndpoint() throws Exception 
    { 
     //Make a request object 
     MyRequest request = readJson("request.json", MyRequest.class); 

     List<MyObject> objects = readJson("data.json", MyObject.class); 

     Mockito.when(
      myDAO.getData(request) 
     ).thenReturn(objects); 

     Mockito.when(
      myService.callDAO(request) 
     ) 
      .thenReturn(objects) 

     //Call the aum endpoint 
     ResultActions actions = mockMvc.perform(
      post("/v1/endpoint") 
       .contentType(MediaType.APPLICATION_JSON) 
       .content(new ObjectMapper().writeValueAsString(request)) 
     ); 

     //Why is this empty? 
     System.out.println(actions.andReturn().getResponse().getContentAsString()); 
    } 
}

來源

2017-09-23 Don Rhummy

你可以顯示你的代碼中結果得到'null'的部分嗎？ – SilverNak

@SilverNak結果在我的代碼中不會爲空。這是當我調試和步入Mockito的代碼，它突然這樣做 –

因此，'actions.andReturn（）。getResponse（）。getContentAsString（）'確實返回一個值？ – SilverNak

使用的Mockito的ObjectMapper不理解@JsonView。爲了解決這個問題，你需要設置一個消息轉換器。

@RunWith(MockitoJUnitRunner.class) 
public class Test 
{ 
    //Also tried @Mock 
    @InjectMocks 
    private MyService myService; 

    @Mock 
    private MyDAO myDAO; 

    //@Autowired 
    @InjectMocks 
    private MyController myController; 

    /** 
    * This is required for JsonViews. 
    * @return 
    */ 
    public static MappingJackson2HttpMessageConverter createJacksonConverter() { 
     ObjectMapper objectMapper = new ObjectMapper(); 
     objectMapper.configure(MapperFeature.DEFAULT_VIEW_INCLUSION, true); 

     MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter(); 
     converter.setObjectMapper(objectMapper); 
     return converter; 
    } 

    @Before 
    public void setup() { 

     //Build the controller mock handler 
     mockMvc = MockMvcBuilders 
      .standaloneSetup(myController) 
      .setControllerAdvice(new ExceptionHandler()) 
      .setMessageConverters(createJacksonConverter()) 
      .build(); 
    } 

    @org.junit.Test 
    public void testMyEndpoint() throws Exception 
    { 
     //Make a request object 
     MyRequest request = readJson("request.json", MyRequest.class); 

     List<MyObject> objects = readJson("data.json", MyObject.class); 

     Mockito.when(
      myDAO.getData(request) 
     ).thenReturn(objects); 

     Mockito.when(
      myService.callDAO(request) 
     ) 
      .thenReturn(objects) 

     //Call the aum endpoint 
     ResultActions actions = mockMvc.perform(
      post("/v1/endpoint") 
       .contentType(MediaType.APPLICATION_JSON) 
       .content(new ObjectMapper().writeValueAsString(request)) 
     ); 

     //Why is this empty? 
     System.out.println(actions.andReturn().getResponse().getContentAsString()); 
    } 
}

來源

2017-09-23 08:14:33

爲什麼@InjectMocks控制器的響應在我使用@JsonView時被Mockito變爲空？

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