Question

我实际上创建了简单的Web服务，我想添加新的junit测试。我有一种方法可以将人员添加到团队中。这是我的方法（在休息控制器中）：

@PostMapping("/addPeopleToTeams/{teamId}/{personId}")
@ResponseBody
public ResponseEntity<?> addPeopleToTeam(@PathVariable Long teamId, @PathVariable Long personId) {
    TeamsAndPersonsId teamsAndPersonsId = new TeamsAndPersonsId(personId, teamId);
    teamService.findTeamById(teamsAndPersonsId.getTeamId());
    personService.findById(teamsAndPersonsId.getPersonId());
    teamService.addPersonsToTeams(personId, teamId);
    return ResponseEntity.ok(teamsAndPersonsId);

}

对于这种方法，我想写一个Junit测试，但出了点问题：/ 这是我的测试类，方法是：

@RunWith(SpringRunner.class)
@SpringBootTest
@AutoConfigureMockMvc
public class TeamControllerTest {

    private ObjectMapper mappingObject = new ObjectMapper();
    private MockMvc mockMvc;
    @Mock
    private TeamService teamService;
    private PersonService personService;

    @Before
    public void initTest() {
        mockMvc = MockMvcBuilders
                .standaloneSetup(new TeamController(teamService, personService))
                .setControllerAdvice(GlobalExceptionHandler.class)
                .build();
    }
        @Test
    public void shouldAddPersonToTeam() throws Exception{
        TeamDto teamDto = prepareTeamDto();
        PersonDto personDto = new PersonDto(1L, "Bob", "Noob", "mail@first.pl", "Warszawa", "APPS", "Developer");
        doNothing().when(teamService).createTeam(teamDto);
        doNothing().when(personService).addPerson(personDto);

        mockMvc.perform(post("/addPeopleToTeams/{teamId}/{personId}",1,1))

                .andExpect(status().isOk());

    }

    private TeamDto prepareTeamDto() {
        return new TeamDto(1L, "Jan", "local", "wawa", 6);
    }

实际上对于这种方法我有这个错误：

org.mockito.exceptions.base.MockitoException: 
Only void methods can doNothing()!
Example of correct use of doNothing():
    doNothing().
    doThrow(new RuntimeException())
    .when(mock).someVoidMethod();
Above means:
someVoidMethod() does nothing the 1st time but throws an exception the 2nd time is called

Answer 1

doNothing()仅用于void方法，如错误消息中所述，在您的情况下，您必须使用以下内容：

when(teamService.createTeam(teamDto)).thenReturn(Reponse.ok().build());

注意：您必须覆盖@equals类

中的TeamDto方法

Answer 2

根据错误，我猜TeamService.createTeam或PersonService.addPerson没有void返回类型，您只能对方法进行模拟doNothing行为，返回{{ 1}}。此外，您在void字段上缺少@Mock注释。

在春季启动测试中，最好使用@MockBean注释。对于控制器测试，最好使用@WebMvcTest，然后您可以跳过在设置方法中完成的配置:)

Answer 3

@InjectMocks
Controller controllerMock;

@Before
public void setup() {
    MockitoAnnotations.initMocks(this);
    this.mockMvc = MockMvcBuilders.standaloneSetup(controllerMock).build();
}

其中-ControllerMock将是Controller类的Mock

Junit测试用模拟休息控制器方法

3 个答案: