JAVA - 获取空 MockHttpServletResponse : body. 。但是它是 200

Question

I have written unit test cases for a spring rest controller but I'm getting blank response body.

下面是我的 Controller 类

@RestController
@RequestMapping("/v2")

public class controller {

@Autowired

Service service;

@RequestMapping(value="/health",method=RequestMethod.POST)

public String postRequest(@RequestHeader @NotNull@NotBlank String 
transID) {

 return service.getTest(transID); }
}

下面是我的服务等级

 @Component
 public class Service {

 public String getTest(@NotNull String transid) {

 return "Hello World Test";
  } }

下面是我的单元测试类。我已经使用mockito为此方法编写了单元测试用例

 class UnitTest {
 @InjectMocks

 controller controllerUse;
 @Mock

 Service service;
 @Autowired

  MockMvc mockMvc;

  @BeforeEach

  public void test() {

  MockitoAnnotations.initMocks(this);

  mockMvc=MockMvcBuilders.standaloneSetup(controllerUse).build();

   }

   @Test

   public void confirmTest() throws Exception {

   mockMvc.perform(post("/v2/health")

   .header("transID","ABC"))

   .andExpect(status().isOk())

   .andDo(print())

   .andReturn();   }

    }

输出:

MockHttpServletResponse:

Status = 200

Error message = null

Headers = []

Content type = null

Body =

Forwarded URL = null

Redirected URL = null

Cookies = []

我收到的响应代码为 200。但正文为空白。我缺少什么？这是为 Spring 休息 Controller 编写单元测试用例的标准方法吗？

Answer 1

由于您要注入(inject)模拟 bean 服务，因此您需要使用预期响应来模拟方法。

这里是使用 Junit 5 和 Spring Boot Test 工件的示例代码，但您也可以使用标准 spring 测试模块实现相同的目标。

@WebMvcTest(SampleController.class)
class SampleControllerTest {

    @MockBean
    Service service;
    @Autowired
    private MockMvc mockMvc;

    @Test
    public void confirmTest() throws Exception {

        when(service.getTest("ABC")).thenReturn("Hello World");

        mockMvc.perform(post("/v2/health")

                            .header("transID", "ABC"))

               .andExpect(status().isOk())
               .andDo(print())
               .andReturn();
    }
}