Junit测试案例:Java.lang.Exception:JSON不能为空或空

Question

我正在尝试使用JUnit和mockito编写控制器的测试用例。但是我会遇到错误，因为JSON不能为空或空。有人可以告诉我我做错了什么吗？

departiveController

@RestController
@RequestMapping("/api.spacestudy.com/SpaceStudy")
public class DepartmentController {
    @Autowired
    DepartmentService depService;
    @GetMapping("/Control/SearchFilter/loadDepartments")
    public ResponseEntity<Set<Department>> findDepName() {
        Set<Department> depname = depService.findDepName();
        return ResponseEntity.ok(depname);
    }

Department ControllerTest

@RunWith(SpringJUnit4ClassRunner.class)
public class DepartmentControllerTest {
    private MockMvc mockMvc;
   @Mock
   public DepartmentService depService;  
   @InjectMocks
   DepartmentController departmentController;
   @Before
    public void setup() throws Exception    {
        mockMvc = MockMvcBuilders.standaloneSetup(departmentController).build(); 
    }
    @Test(timeout = 10000)
       public void findDepNameTest() throws Exception
       {
           Department dep = new Department();
           dep.setsDeptName("ABC");
           Set<Department> department = new  HashSet<Department>();
           department.add(dep);
           Mockito.when(depService.findDepName()).thenReturn(department);
        mockMvc.perform(get("/api.spacestudy.com/SpaceStudy/LoadDept").accept(MediaType.APPLICATION_JSON))
                .andExpect(status().isOk())
                .andExpect(jsonPath("$[0].sDeptName" , is("abc")));

       }
    }

失败跟踪

java.lang.AssertionError: No value at JSON path "$[0].sDeptName", exception: json can not be null or empty
    at org.springframework.test.util.JsonPathExpectationsHelper.evaluateJsonPath(JsonPathExpectationsHelper.java:245)
    at org.springframework.test.util.JsonPathExpectationsHelper.assertValue(JsonPathExpectationsHelper.java:73)
    at org.springframework.test.web.servlet.result.JsonPathResultMatchers$1.match(JsonPathResultMatchers.java:87)
    at org.springframework.test.web.servlet.MockMvc$1.andExpect(MockMvc.java:171)
    at com.spacestudy.DepartmentControllerTest.findDepNameTest(DepartmentControllerTest.java:76)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at 

Answer 1

我发现了我的错误。我在上述代码中给出了错误的途径。我改变了那条路，它正常工作。

mockMvc.perform(get("/api.spacestudy.com/SpaceStudy/Control/SearchFilter/loadDepartmentsLoadDept").accept(MediaType.APPLICATION_JSON))