用Mockito注入mocks不起作用

Question

我正在使用Mockito测试我的spring项目，但是@injectmocks似乎无法将一个模拟服务注入到另一个spring服务（bean）中。

下面是我想测试的spring服务：

@Service
public class CreateMailboxService {   
    @Autowired UserInfoService mUserInfoService; // this should be mocked
    @Autowired LogicService mLogicService;  // this should be autowired by Spring

    public void createMailbox() {
        // do mething
        System.out.println("test 2: " + mUserInfoService.getData());
    }

}

下面是我要嘲弄的服务：

@Service
public class UserInfoService {
    public String getData() {
        return "original text";
    }
}

我的测试代码在这里：

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "file:src/main/webapp/WEB-INF/spring/root-context.xml" })
public class CreateMailboxServiceMockTest {

    @Mock
    UserInfoService mUserInfoService;

    @InjectMocks
    @Autowired
    CreateMailboxService mCreateMailboxService;

    @Before
    public void setup() {
        MockitoAnnotations.initMocks(this);
    }

    @Test
    public void deleteWithPermission() {
        when(mUserInfoService.getData()).thenReturn("mocked text");
    
        System.out.println("test 1: " + mUserInfoService.getData());
    
        mCreateMailboxService.createMailbox();
    }
}

但结果是

test 1: mocked text
test 2: original text  // I want this be "mocked text", too

似乎CreateMailboxService没有得到模拟的UserInfoService而是使用了spring的autowired Bean。为什么我的@injectmocks不能工作？

Answer 1

可以在CreateMailboxService类中为MUserInfoService创建Package级别设置器。

@Service
public class CreateMailboxService {   
    @Autowired UserInfoService mUserInfoService; // this should be mocked
    @Autowired LogicService mLogicService;  // this should be autowired by Spring

    public void createMailbox() {
        // do mething
        System.out.println("test 2: " + mUserInfoService.getData());
    }

    void setUserInfoService(UserInfoService mUserInfoService) {
        this.mUserInfoService = mUserInfoService;
    }
}

然后，您可以使用setter在测试中注入该模拟。

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "file:src/main/webapp/WEB-INF/spring/root-context.xml" })
public class CreateMailboxServiceMockTest {

    @Mock
    UserInfoService mUserInfoService;

    CreateMailboxService mCreateMailboxService;

    @Before
    public void setup() {
        MockitoAnnotations.initMocks(this);
        mCreateMailboxService = new CreateMailboxService();
        mCreateMailboxService.setUserInfoService(mUserInfoService);
    }

    ...
}

这样就可以避免@injectmocks和spring注释的问题。