Mockito和回调返回"Argument(s) are different!"

Question

我正在尝试在Android上使用mockito。我想通过一些回调使用它。这是我的测试：

public class LoginPresenterTest {

private User mUser = new User();
@Mock
private UsersRepository mUsersRepository;
@Mock
private LoginContract.View mLoginView;
/**
 * {@link ArgumentCaptor} is a powerful Mockito API to capture argument values and use them to
 * perform further actions or assertions on them.
 */
@Captor
private ArgumentCaptor<LoginUserCallback> mLoadLoginUserCallbackCaptor;
private LoginPresenter mLoginPresenter;
@Before
public void setupNotesPresenter() {
    // Mockito has a very convenient way to inject mocks by using the @Mock annotation. To
    // inject the mocks in the test the initMocks method needs to be called.
    MockitoAnnotations.initMocks(this);
    // Get a reference to the class under test
    mLoginPresenter = new LoginPresenter(mUsersRepository, mLoginView);
    // fixtures
    mUser.setFirstName("Von");
    mUser.setLastName("Miller");
    mUser.setUsername("[e-mail]");
    mUser.setPassword("Broncos50superBowlWinners");
}
@Test
public void onLoginFail_ShowFail() {
    // When try to login
    mLoginPresenter.login("[e-mail]", "notGoodPassword");

    // Callback is captured and invoked with stubbed user
    verify(mUsersRepository).login(eq(new User()), mLoadLoginUserCallbackCaptor.capture());
    mLoadLoginUserCallbackCaptor.getValue().onLoginComplete(eq(mUser));
    // The login progress is show
    verify(mLoginView).showLoginFailed(anyString());
}

但是我得到了这个错误：

Argument(s) are different! Wanted:
mUsersRepository.login(
    ch.example.project.Model.User@a45f686,
    <Capturing argument>
);
-> at example.ch.project.Login.LoginPresenterTest.onLoginFail_ShowFail(LoginPresenterTest.java:94)
Actual invocation has different arguments:
mUsersRepository.login(
    ch.example.project.Model.User@773bdcae,
    ch.example.project.Login.LoginPresenter$1@1844b009
);

也许问题是第二个实际参数是ch.example.project.Login.LoginPresenter$1@1844b009？

我跟着：https://codelabs.developers.google.com/codelabs/android-testing/#5

谢谢你的帮助=）

编辑

我尝试测试的方法（登录演示器）：

@Override
public void login(String email, String password) {
    mLoginView.showLoginInProgress();
    User user = new User();
    user.setUsername(email);
    user.setPassword(password);
    mUsersRepository.login(user, new UsersRepository.LoginUserCallback() {
        @Override
        public void onLoginComplete(User loggedUser) {
            mLoginView.showLoginComplete();
        }
        @Override
        public void onErrorAtAttempt(String message) {
            mLoginView.showLoginFailed(message);
        }
    });
}

Answer 1

eq(new User())

当使用eq（或根本不使用匹配器）时，Mockito使用传入实例的equals方法来比较参数。除非为 User 对象定义了灵活的equals实现，否则此操作很可能会失败。

考虑使用 isA(User.class) ，这将简单地验证对象是否instanceof User，或者any()或anyObject()完全跳过匹配的第一个参数。

Answer 2

我在 rxjava 2 和 dagger 2 中使用 mvp 模式，并且被困在使用 Mockito 对演示者进行单元测试时。给我"参数不同！错误：

@Mock
ImageService imageService;
@Mock
MetadataResponse metadataResponse;
private String imageId = "123456789";
@Test
public void getImageMetadata() {
    when(imageService.getImageMetadata(imageId)).thenReturn(Observable.just(Response.success(metadataResponse)));
    presenter.getImageMetaData(imageId);
    verify(view).showImageData(new ImageData()));
}

这将引发如下错误消息：

论点不同！需要：实际调用不同 参数：com.example.model.ImageData@5q3v861

感谢@Jeff鲍曼的回答，在我更改此行后它起作用

verify(view).showImageData(new ImageData()));

跟

verify(view).showImageData(isA(ImageData.class));