单元测试 Spring REST API Service (Update (PUT Method))

Question

我正在尝试在我的API中对控制器的服务进行单元测试，但收到以下错误：

2020-05-20 15:23:51.493  WARN 25469 --- [           main] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.http.converter.HttpMessageNotReadableException: Required request body is missing: public org.springframework.http.ResponseEntity<com.tropicalia.meu_cardapio.domain.user.User> com.tropicalia.meu_cardapio.api.user.update.UserUpdateRest.update(com.tropicalia.meu_cardapio.domain.user.User,java.lang.Long)]
MockHttpServletRequest:
HTTP Method = PUT
Request URI = /users/89
Parameters = {}
Headers = [Content-Type:"application/json"]
Body = <no character encoding set>
Session Attrs = {}
Handler:
Type = com.tropicalia.meu_cardapio.api.user.update.UserUpdateRest
Method = com.tropicalia.meu_cardapio.api.user.update.UserUpdateRest#update(User, Long)
Async:
Async started = false
Async result = null
Resolved Exception:
Type = org.springframework.http.converter.HttpMessageNotReadableException
ModelAndView:
View name = null
View = null
Model = null
FlashMap:
Attributes = null
MockHttpServletResponse:
Status = 400
Error message = null
Headers = [Vary:"Origin", "Access-Control-Request-Method", "Access-Control-Request-Headers"]
Content type = null
Body = 
Forwarded URL = null
Redirected URL = null
Cookies = []
java.lang.AssertionError: Status 
Expected :202
Actual   :400

这是我的测试类：

@RunWith(SpringRunner.class)
@WebMvcTest(UserUpdateRest.class)
public class UpdateUserTest {
@Autowired
private MockMvc mvc;
@MockBean
private UserUpdateService service;
@Test
public void updateUser_whenPutUser() throws Exception {
User user = new User();
user.setName("Test Name");
user.setId(89L);
given(service.updateUser(user.getId(), user)).willReturn(user);
mvc.perform(put("/users/" + user.getId().toString())
.contentType(MediaType.APPLICATION_JSON))
.andExpect(status().isAccepted())
.andExpect(jsonPath("name", is(user.getName())));
}
}

这是我的服务

@Service
public class UserUpdateService {
@Autowired
UserRepository repository;
public User updateUser(Long id, User user) {
repository
.findById(id)
.orElseThrow(() -> new EntityNotFoundException("User not found."));
return repository.save(user);
}
}

如果有人能帮我解决这个问题，将不胜感激。

据我了解，请求正文有问题，但我不知道该怎么做才能解决它。

Answer 1

如错误消息中指定的那样，缺少requestbody。

已解决 [org.springframework.http.converter.HttpMessageNotReadableException： 缺少所需的请求正文

您需要做的就是像这样将正文内容添加到单元测试中

ObjectMapper mapper = new ObjectMapper();
mvc.perform(put("/users/" + user.getId().toString())
.contentType(MediaType.APPLICATION_JSON))
.content(mapper.writeValueAsString(user))
.andExpect(status().isAccepted())
.andExpect(jsonPath("name", is(user.getName())));

你也可以传递这样的内容

.content("{"id":"89", "name":"Test Name"}")