Question

我正在尝试对Junit的Controller类进行单元测试。但是，当我尝试自动连接扩展了crudRepository的PlayerRepository接口时，会出现以下错误：

2018-12-06 21：59：39.530错误8780 --- [main] o.s.test.context.TestContextManager：捕获异常允许TestExecutionListener [org.springframework.boot.test.autoconfigure.SpringBootDependencyInjectionTestExecutionListener@78e117e3] 准备测试实例 [edu.ceng.gameproject.player.PlayerControllerTest@4f704591]

（由于发生时间过长，我没有给出完整的错误。）

它也说：

原因： org.springframework.beans.factory.NoSuchBeanDefinitionException：否类型为“ edu.ceng.gameproject.player.PlayerRepository”的合格bean 可用：至少有1个符合自动装配条件的bean 候选人。依赖注释： {@ org.springframework.beans.factory.annotation.Autowired（required = true）}

顺便说一句，我可以在控制器中进行自动装配以对数据库进行更改。它只是在测试中不起作用。这是我的代码：

控制器类：

@Controller    // This means that this class is a Controller
@RequestMapping(path="/Player") // This means URL's start with /Player 
(after Application path)

public class PlayerController {

 @Autowired 
 private PlayerRepository playerRepository;
}

这是PlayerRepsitory界面：

@Repository
public interface PlayerRepository extends CrudRepository<Player, String> {


}

我在其中进行自动装配的抽象测试类：

 @RunWith(SpringJUnit4ClassRunner.class)
 @SpringBootTest(classes = Main.class)

 @WebAppConfiguration
 public abstract class GameProjectBackEndApplicationTests {

 protected MockMvc mvc;

 @Autowired
 WebApplicationContext webApplicationContext;

 @Autowired
 PlayerRepository playerRepository;


 protected void setUp() {
     mvc = 
  MockMvcBuilders.webAppContextSetup(webApplicationContext).build();
 }

}

我使用自动连线的playerRepository的PlayerControllerTest类：

public class PlayerControllerTest extends GameProjectBackEndApplicationTests 
{

    @Override
    @Before
    public void setUp() {
        super.setUp();
    }

    @Test
    public void test_getUsersList_withOk() throws Exception {
        String uri = "/Player/all";

        // Create user in the database
        Player createdUser = playerRepository.save(new Player("testUser", 
"testPassword"));

        MvcResult mvcResult = mvc.perform(MockMvcRequestBuilders.get(uri)
                .accept(MediaType.APPLICATION_JSON_VALUE)).andReturn();

        // check if status is 200 - OK
        int status = mvcResult.getResponse().getStatus();
        assertEquals(200, status);

        String content = mvcResult.getResponse().getContentAsString();
        Player[] playerList = super.mapFromJson(content, Player[].class);

        // check if list has actually any user
        assertTrue(playerList.length > 0);


        // check returned list has user that we created
        boolean contains = false;
        for (int i = 0; i < playerList.length; i++) {
            if 
              (createdUser.getUsername().equals(playerList[i].getUsername())
                    && 
    createdUser.getPasswd().equals(playerList[i].getPasswd())) {
                contains = true;
            }
        }
        // assert there is a user that we created
        assertTrue(contains);
        //delete created user
        playerRepository.deleteById(createdUser.getUsername());
    }
}

谢谢。

Answer 1

正如我在评论中所说，使用@MockBean为控制器中所需的每个依赖项注入一个模拟。您的测试课程将如下所示。

 @RunWith(SpringRunner.class)
 @SpringBootTest(classes = Main.class)

 @WebAppConfiguration
 public class GameProjectBackEndApplicationTests {

     private MockMvc mvc;

     @Autowired
     private WebApplicationContext webApplicationContext;

     @MockBean
     private PlayerRepository playerRepository;

     @Before
     public void setUp() {
         mvc = 
         MockMvcBuilders.webAppContextSetup(webApplicationContext).build();

         // Mock calls to PlayerRepository
         // Mockito.when(playerRepository.getEntries(1)).thenReturn(myList);
     }

     @Test
     public void myTest() {
      ....
     }

}

此外，我不建议在测试中使用继承。最好将所有内容都放在一个地方。

无法在Junit中自动装配bean

1 个答案: