小编ant*_*_st的帖子

我是 Android 单元测试的新手，我想在现有项目中添加一些单元测试。我正在使用 MVP 设计架构。在我的演示者内部，我有一个调用PreferenceManager以获取默认值，SharedPrefences但它始终返回 null。我在 stackoverflow 上遵循了一些关于如何模拟的教程和建议PreferenceManager，SharedPreferences但我无法让它工作。这是我的演讲者课

@RunWith(MockitoJUnitRunner.class)
public class SettingsPresenterTest {
    @Mock
    private SettingsView mView;
    @Mock
    private LocalConfiguration conf;
    private SettingsPresenter mPresenter;

    public SettingsPresenterTest() {
        super();
    }

    @Before
    public void startUp() throws Exception {
        MockitoAnnotations.initMocks(LocalConfiguration.class);
        MockitoAnnotations.initMocks(PreferenceManager.class);


        mPresenter = new SettingsPresenter(mView);


        final SharedPreferences sharedPrefs = 
        Mockito.mock(SharedPreferences.class);
        final Context context = Mockito.mock(Context.class);

       Mockito.when(PreferenceManager.getDefaultSharedPreferences(context)).
       thenReturn(sharedPrefs);
    }


    @Test
    public void notificationsEnabledClicked() throws Exception {
        boolean notifsEnabled = false;
        mPresenter.notificationsEnabledClicked(notifsEnabled);

        Mockito.verify(mView).setNotificationsView(notifsEnabled);
    }
}

这是SharedPreferences …