ResponseBody 正在打印空體以進行彈簧啟動測試

Question

我正在按照這個來運行我的 spring-boot 控制器測試。 但是，我的代碼仍在打印一個空的正文。 我嘗試調用真正的方法並模擬了一個，這是 IntelliJ 的問題還是我錯過了什么？

下面是測試代碼。

@RunWith(SpringRunner.class)
@WebMvcTest(AnimalController.class)
class AnimalControllerTest {

    @Autowired
    MockMvc mvc;
    @MockBean
    AnimalService animalService;

    @Before
    public void setUp(){
        AnimalDto response = new AnimalDto();
        response.setId(1l);
       when(animalService.add(any())).thenReturn(response);
    }

    @Test
    void addAnimal() throws Exception {
        AnimalDto animalDto = new AnimalDto();
        mvc.perform(MockMvcRequestBuilders
                   .post("/animal/add")
                   .content(asJsonString(new AnimalDto(null, "dog", null,null, null, null, null)))
                   .contentType(MediaType.APPLICATION_JSON)
                   .accept(MediaType.APPLICATION_JSON))
                   .andExpect(status().isOk())
                   .andDo(MockMvcResultHandlers.print())
                   .andExpect(MockMvcResultMatchers.jsonPath("$.id").exists());

    }
}

下面是我的實際控制人

@RestController
@AllArgsConstructor
@FieldDefaults(level = AccessLevel.PRIVATE)
@RequestMapping("/animal")
public class AnimalController {

    AnimalService animalService;

    @PostMapping("/add")
    public AnimalDto addAnimal(@Valid @RequestBody AnimalDto animalDto){
        return animalService.add(animalDto);
    }
}

和我的服務等級：

@Service
@AllArgsConstructor
@FieldDefaults(level = AccessLevel.PRIVATE)
@Slf4j
public class AnimalService {

    AnimalRepository animalRepository;
    SourceToDestinationMapper mapper;

    public AnimalDto add(AnimalDto animalDto) {
        Animal animal = mapper.animalDtoToAnimal(animalDto);
        Animal savedAnimal = animalRepository.save(animal);
        log.debug("animal object saved:",animal);
        return mapper.animalToAnimalDto(savedAnimal);
    }
}

這就是我的輸出的樣子

MockHttpServletRequest:
      HTTP Method = POST
      Request URI = /animal/add
       Parameters = {}
          Headers = [Content-Type:"application/json;charset=UTF-8", Accept:"application/json", Content-Length:"103"]
             Body = {"id":null,"title":"dog","located":null,"type":null,"preference":null,"favoriteRooms":null,"room":null}
    Session Attrs = {}

Handler:
             Type = com.self.zoo.controller.AnimalController
           Method = com.self.zoo.controller.AnimalController#addAnimal(AnimalDto)

Async:
    Async started = false
     Async result = null

Resolved Exception:
             Type = null

ModelAndView:
        View name = null
             View = null
            Model = null

FlashMap:
       Attributes = null

MockHttpServletResponse:
           Status = 200
    Error message = null
          Headers = []
     Content type = null
             Body = 
    Forwarded URL = null
   Redirected URL = null
          Cookies = []

java.lang.AssertionError: No value at JSON path "$.id"

    at org.springframework.test.util.JsonPathExpectationsHelper.evaluateJsonPath(JsonPathExpectationsHelper.java:304)
    at org.springframework.test.util.JsonPathExpectationsHelper.assertExistsAndReturn(JsonPathExpectationsHelper.java:328)
    at org.springframework.test.util.JsonPathExpectationsHelper.exists(JsonPathExpectationsHelper.java:192)
    at org.springframework.test.web.servlet.result.JsonPathResultMatchers.lambda$exists$3(JsonPathResultMatchers.java:123)
    at org.springframework.test.web.servlet.MockMvc$1.andExpect(MockMvc.java:212)
    at com.self.zoo.controller.AnimalControllerTest.addAnimal(AnimalControllerTest.java:54)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at 

Answer 1

我最終寫了@BeforeAll注釋，因為在 Junit5 我們需要那個

Answer 2

確保您的映射器正常工作：

• 嘗試不使用映射器通過您自己的 dto->Model 進行轉換，反之亦然？
• 嘗試無效緩存重啟 IntelliJ
• 使用 postman 測試 API