如何在数据更改时测试 MutableLiveData<>.observe？

Question

如果 API 正在使用登录功能，我有下一个测试代码：

@RunWith(RobolectricTestRunner.class)
public class LoginTest {
    LoginRespository profileRepository = new LoginRespository(RuntimeEnvironment.application);

    @Test
    public void testLogin() {
        MutableLiveData<ApiResponse<LoginData>> data = new MutableLiveData<>();
        String email = "email@email.com";
        String password = "email@email.com";
        profileRepository.login(data, email, password);

    }
}

API return 的数据保存到 data 但我不知道如何将观察者放在这里，因为我需要上下文，也许testLogin，未完成。

有什么想法吗？

谢谢

Answer 1

最后，我可以用 robolectric 和下一个代码进行测试：

@RunWith(RobolectricTestRunner.class)
public class DownloadProfileTest {
    LoginRespository profileRepository = new LoginRespository(RuntimeEnvironment.application);
    private ActivityController<LoginActivity> controller;
    private LoginActivity activity;

    private void createLoginActivityWithIntent() {
        activity = controller
                .create()
                .start()
                .get();
    }

    @Before
    public void setUp() {
        controller = Robolectric.buildActivity(LoginActivity.class);
    }

    @Test
    public void testUtilsIsValidEmail() {
        MutableLiveData<ApiResponse<LoginData>> data = new MutableLiveData<>();
        String email = "email@email.com";
        String password = "email@email.com";
        profileRepository.login(data, email, password);
        createLoginActivityWithIntent();

        data.observe(activity, (@Nullable ApiResponse<LoginData> loginResponse) -> {
            assertTrue(loginResponse != null);
        });
    }
}

如何在数据更改时测试 MutableLiveData<>.observe？

How can test MutableLiveData<>.observe when the data is changed?

android

junit

android-testing

robolectric

android-mvvm