java - ResultActions 类型中的方法 andExpect(ResultMatcher) 不适用于参数 (RequestMatcher)

Question

我正在开发Spring MVC + Mockito，我开发了以下代码，该代码导致错误，不确定出了什么问题。

import static org.mockito.Mockito.verifyNoMoreInteractions;
import static org.mockito.Mockito.when;
import static org.springframework.test.web.client.match.MockRestRequestMatchers.content;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

import java.util.Arrays;
import java.util.List;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.springframework.http.MediaType;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.web.WebAppConfiguration;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;

import com.memorynotfound.config.WebConfig;
import com.memorynotfound.controller.UserController;
import com.memorynotfound.filter.CORSFilter;
import com.memorynotfound.model.User;
import com.memorynotfound.service.UserService;


@WebAppConfiguration
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = {WebConfig.class})
public class UserControllerUnitTest {

    private MockMvc mockMvc;

    @Mock
    private UserService userService;

    @InjectMocks
    private UserController userController;

    @Before
    public void init(){
        MockitoAnnotations.initMocks(this);
        mockMvc = MockMvcBuilders.standaloneSetup(userController).addFilters(new CORSFilter()).build();
    }

    @Test
    public void test_get_all_success() throws Exception{
        List<User> users = Arrays.asList(
                new User(1, "Daenerys Targaryen"),
                new User(2, "John Snow"));

        when(userService.getAll()).thenReturn(users);

        mockMvc.perform(get("/users"))
        .andExpect(status().isOk())
        .andExpect(content().contentType(MediaType.APPLICATION_JSON_UTF8_VALUE))
        .andExpect(jsonPath("$", hasSize(2)))
        .andExpect(jsonPath("$[0].id", is(1)))
        .andExpect(jsonPath("$[0].username", is("Daenerys Targaryen")))
        .andExpect(jsonPath("$[1].id", is(2)))
        .andExpect(jsonPath("$[1].username", is("John Snow")));

        verify(userService, times(1)).getAll();
        verifyNoMoreInteractions(userService);
    }
}

我怀疑，与导入语句相关的某些内容不起作用。

@RestController
@RequestMapping("/users")
public class UserController {

    private final Logger LOG = LoggerFactory.getLogger(UserController.class);

    @Autowired
    private UserService userService;

    // =========================================== Get All Users ==========================================

    @RequestMapping(method = RequestMethod.GET)
    public ResponseEntity<List<User>> getAll() {
        LOG.info("getting all users");
        List<User> users = userService.getAll();

        if (users == null || users.isEmpty()){
            LOG.info("no users found");
            return new ResponseEntity<List<User>>(HttpStatus.NO_CONTENT);
        }

        return new ResponseEntity<List<User>>(users, HttpStatus.OK);
    }
}

以下错误供引用:

java.lang.Error: Unresolved compilation problems: 
    The method andExpect(ResultMatcher) in the type ResultActions is not applicable for the arguments (RequestMatcher)
    The method hasSize(int) is undefined for the type UserControllerUnitTest
    The method is(int) is undefined for the type UserControllerUnitTest
    The method is(String) is undefined for the type UserControllerUnitTest
    The method is(int) is undefined for the type UserControllerUnitTest
    The method is(String) is undefined for the type UserControllerUnitTest
    The method times(int) is undefined for the type UserControllerUnitTest

    at com.memorynotfound.test.UserControllerUnitTest.test_get_all_success(UserControllerUnitTest.java:61)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)

Answer 1

我应该使用这个:

import static org.mockito.Mockito.*;
import static org.hamcrest.Matchers.*;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;

import java.util.Arrays;
import java.util.List;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;

import org.springframework.http.*;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.web.WebAppConfiguration;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;

import com.memorynotfound.config.WebConfig;
import com.memorynotfound.controller.UserController;
import com.memorynotfound.filter.CORSFilter;
import com.memorynotfound.model.User;
import com.memorynotfound.service.UserService;