java - 问:Mockito - Using @Mock and @Autowired

Question

我想使用 Mockito 测试一个具有其他两个服务类的服务类，如下所示.

@Service
public class GreetingService {

    private final Hello1Service hello1Service;
    private final Hello2Service hello2Service;

    @Autowired
    public GreetingService(Hello1Service hello1Service, Hello2Service hello2Service) {
        this.hello1Service = hello1Service;
        this.hello2Service = hello2Service;
    }

    public String greet(int i) {
        return hello1Service.hello(i) + " " + hello2Service.hello(i);
    }
}

@Service
public class Hello1Service {

    public String hello(int i) {

        if (i == 0) {
            return "Hello1.";
        }

        return "Hello1 Hello1.";
    }
}

@Service
public class Hello2Service {

    public String hello(int i) {

        if (i == 0) {
            return "Hello2.";
        }

    return "Hello2 Hello2.";
    }
}    

我知道如何模拟 Hello1Service.class和 Hello2Service.class与 Mockito如下所示。

@RunWith(MockitoJUnitRunner.class)
public class GreetingServiceTest {

    @InjectMocks
    private GreetingService greetingService;

    @Mock
    private Hello1Service hello1Service;

    @Mock
    private Hello2Service hello2Service;

    @Test
    public void test() {

        when(hello1Service.hello(anyInt())).thenReturn("Mock Hello1.");
        when(hello2Service.hello(anyInt())).thenReturn("Mock Hello2.");

        assertThat(greetingService.greet(0), is("Mock Hello1. Mock Hello2."));
    }
}

我想模拟 Hello1Service.class并注入(inject) Hello2Service.class使用 @Autowired如下所示。
我厌倦了使用 @SpringBootTest但它没有用。
有没有更好的办法？

@RunWith(MockitoJUnitRunner.class)
public class GreetingServiceTest {

    @InjectMocks
    private GreetingService greetingService;

    @Mock
    private Hello1Service hello1Service;

    @Autowired
    private Hello2Service hello2Service;

    @Test
    public void test() {

        when(hello1Service.hello(anyInt())).thenReturn("Mock Hello1.");
        assertThat(greetingService.greet(0), is("Mock Hello1. Hello2."));
    }
}

Answer 1

您想注入(inject)一些要形成的功能的依赖关系，然后使用 @Spy .
您不要加载 Spring Container 并使用 @Autowired .

@Spy
private Hello2Service hello2Service=new Hello2Service();

您可以阅读有关 的更多详细信息模拟与 spy ;

https://dzone.com/articles/mockito-mock-vs-spy-in-spring-boot-tests