android - Mockito Android 单元测试

Question

我的应用程序中有 MVP。 Presenter有接口(interface)

public interface ILoginPresenter<V> extends Presenter<V> {
    void logUserIn(String email, String password, String deviceToken, String deviceType); 
}

实现有RX Single

 mLoginSubscription = mModel.logUserIn(email, password, deviceToken, deviceType)
            .compose(RxUtil.setupNetworkSingle())
            .subscribe(new Subscriber<User>() {
                @Override
                public void onCompleted() {
                    Timber.i("Log in complete");
                }

                @Override
                public void onError(Throwable e) {
                    Timber.e(e, "Retrofit could not get User.");

                    getView().dismissProgressDialog();
                }

                @Override
                public void onNext(UserResponseRetrofit response) {
                    Timber.i("Retrofit is attempting to get User");
                    mSaveModel.saveUser(user);
                    getView().dismissProgressDialog();
                    getView().goToMenuActivity();
                }
            });

我还有 Dagger 模块

@Module
public class ModelModule {
    @Provides
    @ScreenScope
    public ILoginModel provideLoginModel(LoginModel p) {
        return p;
    }
}

我的单元测试如下所示:

@RunWith(RobolectricTestRunner.class)
@Config(constants = BuildConfig.class, sdk = 21, manifest = "/src/main/AndroidManifest.xml")
public class LoginPresenterTest {

    public static final String SOME_OTHER_TOKEN = "someOtherToken";
    private AppComponent mAppComponent;
    private LoginComponent mLoginComponent;
    private ILoginView mockView;
    private ModelModule mockModel;
    private ILoginPresenter mLoginPresenter;

    @Before
    public void setup() {
        // Creating the mocks
        mockView = Mockito.mock(ILoginView.class);
        mockModel = Mockito.mock(ModelModule.class);

        ILoginModel mock = Mockito.mock(ILoginModel.class);
        User urr = Mockito.mock(User.class);
        Mockito.when(mockModel.provideLoginModel(null)).thenReturn(mock);
        Mockito.when(mock.logUserIn("", "", "", "")).thenReturn(ScalarSynchronousSingle.just(urr));

        mAppComponent = DaggerAppComponent.builder()
                .appModule(new AppModule(RuntimeEnvironment.application))
                .build();

        mLoginComponent = DaggerLoginComponent.builder()
                .appComponent(mAppComponent)
                .modelModule(mockModel)
                .presenterModule(new PresenterModule())
                .build();

        mLoginPresenter = mLoginComponent.provideLoginPresenter();
        mLoginPresenter.setView(mockView);
    }

    @Test
    public void testLogin() {
        mLoginPresenter.logUserIn("", "", "", "");
        try {
            java.lang.Thread.sleep(20000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        Mockito.verify(mockView).dismissProgressDialog();
    }

所以使用 Dagger 我需要正确构建 Presenter。为此，我正在尝试使用 Mockito.when。首先看起来这条线不起作用

Mockito.when(mockModel.provideLoginModel(null)).thenReturn(mock);

目标目的是使用我自己的模型实现，返回 Single。

真的不明白为什么我的 ModelModule 模拟不起作用？

Answer 1

如何从生产 Module 中创建一个测试模块？

查看他们如何建议通过 Dagger 进行测试 in official site .

@Module
public class ModelModuleTest extends ModelModule {

    @Override
    public ILoginModel provideLoginModel(LoginModel p) {
        ...
    }
}

您可以将模拟的依赖项传递给您的模块。