java - Mockito - 监视多个依赖项

Question

是否可以将两个依赖项的 spy 注入(inject)到被测试的类中？我有这门课:

@Service
@Singleton
@MessageReceiver
public class LinkHitCallbackEventHandler {
    public static final Logger logger = LogManager.getLogger();

    @Inject
    private CallbackInvocationBuilder callbackInvocationBuilder;

    @Inject
    private CallbackLogBuilder callbackLogBuilder;

    @MessageReceiver
    public void handle(@SubscribeTo LinkHitEvent event) {
        Entity<Form> entity = EntityFormFactory.createFromEvent(event);

        this.callbackLogBuilder.build(entity);

        Response response = this.callbackInvocationBuilder.post(entity);
    }
}

重要的是，它是一个简单的类，具有两个注入(inject)的依赖项:callbackIn VocationBuilder和callbackLogBuilder。

我通过以下方式测试对这些依赖项的调用:

    @Test
    public void send_callback_after_event_is_published() {
        target("/testY")
                .property("jersey.config.client.followRedirects", false)
                .request()
                .header("User-Agent", UserAgentMother.allowedUserAagent())
                .get();

        verify(callbackInvocationBuilder).post(anyObject());
//        verify(callbackLogBuilder).build(anyObject());
    }

这种安排测试通过了，因为我首先调用了callbackLogBuilder.build(entity)。

如果我交换调用并首先调用它们callbackInvocalBuilder.post(entity)，测试将失败。

callbackLogBuilder 和callbackInvocationBuilder 都是 spy 。我在 JerseyTest 的 configure() 中配置它们。以完全相同的方式。

Answer 1

注入(inject) spy 的方法之一是使用whitebox并使用verify

像这样:

Whitebox.setInternalState(ClassToTest.class, "Object", spy1);

，所以测试方法会是这样的:

    @Test
    public void send_callback_after_event_is_published() {
        Whitebox.setInternalState(LinkHitCallbackEventHandler.class, "callbackInvocationBuilder", spy1);
        Whitebox.setInternalState(LinkHitCallbackEventHandler.class, "callbackInvocationBuilder", spy2);

        target("/testY")
                .property("jersey.config.client.followRedirects", false)
                .request()
                .header("User-Agent", UserAgentMother.allowedUserAagent())
                .get();

        verify(callbackInvocationBuilder).post(anyObject());
        verify(callbackLogBuilder).build(anyObject());
    }

, 如果你想捕获参数

ArgumentCaptor<Entity> captor = ArgumentCaptor.forClass(Entity.class);
verify(callbackInvocationBuilder, times(1)).post(captor.capture());

Entity actualEntity = captor.getValue();
assertEquals(expected, actualEntity);