java - Junit 测试用例与 Mockito 和 Spring MVC 一起下降

Question

我有一个 Controller 类，我正在尝试使用mockito进行测试。

@Controller
public class LoginController {
    final static Logger logger = Logger.getLogger(LoginController.class);
    private StaffService staffService;
    @Autowired
    public LoginController(StaffService staffService) {
        this.staffService = staffService;
    }

    @RequestMapping(value = "/", method = RequestMethod.GET)
    public String showLoginPage(Model model) {
        model.addAttribute("loginBean", new LoginBean());
        return "login";
    }} 

我的测试类如下所示:-

@RunWith(MockitoJUnitRunner.class)
public class LoginControllerTest {
    private static MockMvc mockMvc;
    @Mock
    private static LoginController loginController;

    @Before
    public void setUp() {
        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
        viewResolver.setPrefix("/WEB-INF/");
        viewResolver.setSuffix(".jsp");
        mockMvc = MockMvcBuilders.standaloneSetup(loginController).setViewResolvers(viewResolver).build();
    }

    @Test
    public void testShowLoginPage() throws Exception {
    loginController.showLoginPage(new ExtendedModelMap());
        mockMvc.perform(get("/")).andExpect(view().name("login"));
    }

}

但是当我运行测试类时，我收到以下错误。请帮忙!

java.lang.AssertionError: View name expected:<login> but was:<>
    at org.springframework.test.util.AssertionErrors.fail(AssertionErrors.java:54)
    at org.springframework.test.util.AssertionErrors.assertEquals(AssertionErrors.java:81)
    at org.springframework.test.web.servlet.result.ViewResultMatchers$2.match(ViewResultMatchers.java:69)
    at org.springframework.test.web.servlet.MockMvc$1.andExpect(MockMvc.java:171)
    at com.expensecalculator.controller.test.LoginControllerTest.testShowLoginPage(LoginControllerTest.java:38)

Answer 1

这可能是因为您正在模拟您正在尝试测试的 Controller 。你应该尝试这个:

@RunWith(MockitoJUnitRunner.class)
public class LoginControllerTest {
    private MockMvc mockMvc;
    private static LoginController loginController;

    @Mock
    private StaffService staffService;

    @Before
    public void setUp() {
        loginController = new LoginController(staffService);

        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
        viewResolver.setPrefix("/WEB-INF/");
        viewResolver.setSuffix(".jsp");
        mockMvc = MockMvcBuilders.standaloneSetup(loginController).setViewResolvers(viewResolver).build();
     }

      @Test
      public void testShowLoginPage() throws Exception {
         mockMvc.perform(get("/")).andExpect(view().name("login"));
      }
}

Mockito 的模拟将所有方法调用替换为默认行为，因此当您的独立实现到达该方法时，它只返回一个空字符串。