Question

我正在尝试模拟https://artemzin.com/blog/how-to-mock-dependencies-in-unit-integration-and-functional-tests-dagger-robolectric-instrumentation/

中建议的依赖项

不幸的是，当我运行AndroidJunit4测试时，我无法解决以下错误：

测试运行失败：无法找到以下内容的检测信息：ComponentInfo {com.fisincorporated.aviationweather.test / android.support.test.runner.AndroidJUnitRunner}

我尝试了各种不依赖于Android Studio版本的SO解决方案

我的应用级gradle代码段是：

android {
   ...
defaultConfig {
     ...
    testInstrumentationRunner "com.fisincorporated.aviationweather.app.OverrideApplicationTestRunner"
}
...
}

我的OverrideApplicationTestRunner是：

public class OverrideApplicationTestRunner extends AndroidJUnitRunner {
@Override
@NonNull
public Application newApplication(@NonNull ClassLoader cl,
                                  @NonNull String className,
                                  @NonNull Context context)
        throws InstantiationException,
        IllegalAccessException,
        ClassNotFoundException {
    return Instrumentation.newApplication(WeatherApplicationTest.class, context);
}
}

WeatherApplicationTest

public class WeatherApplicationTest extends WeatherApplication {

@Override
protected void createDaggerInjections() {
    component = DaggerDiComponent.builder()
            .appModule(new AppModule(this) {
                @Override
                public String providesAppSharedPreferencesName() {
                    return "SHARED_AIRPORT_FUNCTIONAL_TEST";
                }

                public Retrofit provideAppRetrofit() {
                    return new AppRetrofit(new MockInterceptor()).getRetrofit();
                }
            })
            .build();
    component.inject(this);
}
}

和AirportWeatherActivityTest

@RunWith(AndroidJUnit4.class)
public class AirportWeatherActivityTest {

    @Rule
    public ActivityTestRule<AirportWeatherActivity> mActivityRule =
            new ActivityTestRule<>(AirportWeatherActivity.class, true, false);

    @Test
    public void someTest() {
        Context targetContext = InstrumentationRegistry.getTargetContext();
        Intent intent = new Intent(targetContext, AirportWeatherActivity.class);

        mActivityRule.launchActivity(intent);
        assertThat(mActivityRule.getActivity().airportWeatherViewModel.airportWeatherList.size(),is(0));

    }
}

androidTest目录结构如下：

我发现如果我运行以下测试，它就可以工作，即我看到正在执行WeatherApplicationTest。所以看起来testInstrumentationRunner正在寻找我的OverrideApplicationTestRunner。

@RunWith(AndroidJUnit4.class)
public class ExampleInstrumentedTest {
@Test
public void useAppContext() throws Exception {
    // Context of the app under test.
    Context appContext = InstrumentationRegistry.getTargetContext();

    assertEquals("com.fisincorporated.aviationweather", appContext.getPackageName());
}
}

使用ActivityTestRule会导致问题吗？

P.S。我没有说我是测试的新手，所以如果我遗漏了一些明显的东西，我会道歉。

Answer 1

将Android插件版本切换为2.2.3，然后返回2.3.0，清理项目并构建修复问题。

使用AndroidJunitRunner和Dagger2模拟依赖性错误

1 个答案: