我是第一次用mockmvc进行单元测试,我还没有弄清楚如何正确地使用它。我正在尝试测试一个简单的post方法。我的代码(类代码)工作得很好,我用postman测试了它,所以很明显问题出在测试代码上。
控制器:
@Controller
@RequestMapping("/employees")
public class EmployeeController {
private final EmployeeService employeeService;
private final EmployeeModelAssembler assembler;
@Autowired
public EmployeeController(EmployeeService employeeService, EmployeeModelAssembler assembler){
this.employeeService = employeeService;
this.assembler = assembler;
}
@PostMapping()
public ResponseEntity<?> addEmployee(@RequestBody Employee employee, UriComponentsBuilder builder){
EntityModel<Employee> entityModel = this.assembler.toModel(this.employeeService.addEmployee(employee));
return ResponseEntity.created(entityModel.getRequiredLink(IanaLinkRelations.SELF).toUri()).body(entityModel);
}
...
上面有更多的方法,但是addemployee是我尝试测试的方法。
测试:
@ExtendWith(SpringExtension.class)
@WebMvcTest(EmployeeController.class)
@AutoConfigureMockMvc
public class EmployeeControllerTest {
@Autowired
private MockMvc mockMvc;
@MockBean
private EmployeeService employeeService;
@MockBean
private EmployeeModelAssembler assembler;
@InjectMocks
private EmployeeController employeeController;
@Before
public void setUp(){
MockitoAnnotations.openMocks(this);
}
@Test
public void testAddEmployee() throws Exception {
String mockEmployeeJson =
" \"firstName\": \"new\",\n" +
" \"lastName\": \"Employee\",\n" +
" \"emailAddress\": \"new@Employee.com\",\n" +
" \"roll\": \"Software Engineer\",\n" +
" \"team\": \n" +
" {\n" +
" \"teamId\": 1\n" +
" }\n" +
"}";
mockMvc.perform(MockMvcRequestBuilders.post("/employees")
.contentType(MediaType.APPLICATION_JSON)
.content(mockEmployeeJson)
.accept(MediaType.APPLICATION_JSON))
.andExpect(status().isOk());
}
输出:
MockHttpServletRequest:
HTTP Method = POST
Request URI = /employees
Parameters = {}
Headers = [Content-Type:"application/json;charset=UTF-8", Accept:"application/json", Content-Length:"171"]
Body = "firstName": "new",
"lastName": "Employee",
"emailAddress": "new@Employee.com",
"roll": "Software Engineer",
"team":
{
"teamId": 1
}
}
Session Attrs = {}
Handler:
Type = com.Ventura.Notifier.controller.EmployeeController
Method = com.Ventura.Notifier.controller.EmployeeController#addEmployee(Employee, UriComponentsBuilder)
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 = []
Content type = null
Body =
Forwarded URL = null
Redirected URL = null
Cookies = []
java.lang.AssertionError: Status expected:<200> but was:<400>
Expected :200
Actual :400
<Click to see difference>
编辑1将测试更改为:
private Employee employee;
@BeforeEach
public void setUpEmployee(){
Team team = new Team();
team.setTeamId(1);
employee = new Employee();
employee.setTeam(team);
employee.setRoll("software developer");
employee.setLastName("Levi");
employee.setEmailAddress("a@a.com");
employee.setFirstName("David");
}
@Test
public void testAddEmployee() throws Exception {
ObjectMapper objectMapper = new ObjectMapper();
mockMvc.perform(MockMvcRequestBuilders.post("/employees")
.contentType(MediaType.APPLICATION_JSON)
.content(objectMapper.writeValueAsString(employee))
.accept(MediaType.APPLICATION_JSON))
.andExpect(status().isOk());
}
但是我得到一个空指针异常。
编辑2
我解决了空指针异常,但不知道为什么。如果有人对解决方案感兴趣:
测试:
@Test
public void testAddEmployee() throws Exception {
ObjectMapper objectMapper = new ObjectMapper();
mockMvc.perform(MockMvcRequestBuilders.post("/employees")
.contentType(MediaType.APPLICATION_JSON)
.content(objectMapper.writeValueAsString(employee))
.accept(MediaType.APPLICATION_JSON))
.andExpect(status().is2xxSuccessful());
}
我把addemployee方法中的return语句改为:
return new ResponseEntity<>(entityModel, HttpStatus.CREATED);
2条答案
按热度按时间6ioyuze21#
json格式的输入请求正文格式不正确,我建议使用
Map
与objectMapper
,map.of来自jdk-9如果您使用的是较低版本,则可以通过使用new
关键字sulc1iza2#
您发布的正文实际上不是json。尝试使用objectmapper(例如,来自jackson)将dto转换为可以用mockmvc发送的字符串: