spring 单元测试 service proxy-Go服务器开发

在Spring单元测试中，如果需要获取代理类的真正对象，可以使用以下方法：

使用Mockito框架

import static org.mockito.Mockito.mockingDetails;

@Service
public class MyServiceImpl implements MyService {
    @Override
    public void doSomething() {
        MyService myService = (MyService) mockingDetails(this).getMock();
        // do something with myService
    }
}

// Unit test
@RunWith(MockitoJUnitRunner.class)
public class MyServiceImplTest {
    @InjectMocks
    private MyServiceImpl myService;

    @Test
    public void testDoSomething() {
        myService.doSomething(); // the real MyServiceImpl instance is used
    }
}

使用@Spy注解

@Service
public class MyServiceImpl implements MyService {
    @Autowired
    private MyService self;

    @Override
    public void doSomething() {
        MyService myService = (MyService) ((Advised) self).getTargetSource().getTarget();
        // do something with myService
    }
}

// Unit test
@RunWith(SpringRunner.class)
@SpringBootTest
public class MyServiceImplTest {
    @SpyBean // or @MockBean
    private MyServiceImpl myService;

    @Test
    public void testDoSomething() {
        myService.doSomething(); // the real MyServiceImpl instance is used
    }
}

注：使用@Spy或@Mock注解时，需要将实现类替换为代理类。在上述例子中，MyServiceImpl已经被声明成了@Service，因此不能直接使用@Spy或@Mock注解。可以通过另外声明一个包可见的内部类来做到这一点，如下所示：

@Service
public class MyServiceImpl implements MyService {
    @Autowired
    private MyService self;

    @Override
    public void doSomething() {
        MyService myService = (MyService) ((Advised) self).getTargetSource().getTarget();
        // do something with myService
    }

    static class Spy extends MyServiceImpl {}
}

// Unit test
@RunWith(SpringRunner.class)
@SpringBootTest
public class MyServiceImplTest {
    @SpyBean
    private MyServiceImpl.Spy myService;

    @Test
    public void testDoSomething() {
        myService.doSomething(); // the real MyServiceImpl instance is used
    }
}