Q:Mockito - 使用@Mock 和@Autowired

Question

我想测试一个服务类，它有两个其他服务类，如下所示使用Mockito.@Servicepublic 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);    }}@Servicepublic class Hello1Service {    public String hello(int i) {        if (i == 0) {            return "Hello1.";        }        return "Hello1 Hello1.";    }}@Servicepublic class Hello2Service {    public String hello(int i) {        if (i == 0) {            return "Hello2.";        }    return "Hello2 Hello2.";    }}    我知道如何嘲笑Hello1Service.class，并Hello2Service.class用Mockito类似如下。@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和注入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

您可以使用 Spy 更改真实对象而不是 Mock。测试代码会是这样；

@RunWith(MockitoJUnitRunner.class)

public class GreetingServiceTest {

    @InjectMocks

    private GreetingService greetingService;

    @Mock

    private Hello1Service hello1Service;

    @Spy

    private Hello2Service hello2Service;

    @Test

    public void test() {

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

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

    }

}