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/**
 * Contains bindings to ensure the usability of {@code dagger.android} framework classes. This
 * module should be installed in the component that is used to inject the {@link
 * android.app.Application} class.
 */
@Beta
@Module
public abstract class AndroidInjectionModule {
  @Multibinds
  abstract Map<Class<? extends Activity>, AndroidInjector.Factory<? extends Activity>>

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@Module
public class FlombulatorModule {

    @Provides
    Flumbolator provideFlumBolator() {
        System.out.println("I'm the mighty real implementation, give me a break");
        return new Flumbolator();
    }
}

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  FlumbolatorComponent component = DaggerFlumbolatorComponent.builder()
          .anyDependencyModule(new DependencyModule(params))
          .build();

  component.inject(this);

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@Subcomponent(modules = {
        FlombulatorModule.class,
        MainActivitySubComponent.MainActivityModule.class
})

public interface MainActivitySubComponent extends AndroidInjector<MainActivity> {

    @Module
    class MainActivityModule {}

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@Module(subcomponents = {
        MainActivitySubComponent.class,
        SecondaryActivitySubComponent.class
})
public abstract class BindingModule {
    @Binds
    @IntoMap
    @ActivityKey(MainActivity.class)
    abstract AndroidInjector.Factory<? extends Activity> bindMainActivityInjectorFactory(MainActivitySubComponent.Builder builder);

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@Component(
        modules = {
                AndroidInjectionModule.class,
                BindingModule.class,
                MyApplicationComponent.AppModule.class
        })
interface MyApplicationComponent {

    void inject(Dagger2application dagger2application);

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public class Dagger2application extends Application implements HasDispatchingActivityInjector {
    @Inject
    DispatchingAndroidInjector<Activity> dispatchingActivityInjector;

    @Override
    public void onCreate() {
        super.onCreate();
        DaggerMyApplicationComponent.create().inject(this);
    }

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@Config(constants = BuildConfig.class, sdk = 21, application = TestApplication.class)
@RunWith(RobolectricTestRunner.class)
public class TestMainActivity {

    private MainActivity mainActivity;

    @Before
    public void setUp() throws Exception {
    }

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public class TestApplication extends Application implements HasDispatchingActivityInjector {
    @Inject
    DispatchingAndroidInjector<Activity> dispatchingActivityInjector;

    @Override
    public void onCreate() {
        super.onCreate();
        System.out.println("HEY IM UP TESTING APPLICATION COMPONENT ==========================+>");
        DaggerTestApplicationComponent.create().inject(this);
    }

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@Component(
        modules = {
                AndroidInjectionModule.class,
                TestBindingModule.class,
                TestApplicationComponent.TestAppModule.class
        })
interface TestApplicationComponent {

    void inject(TestApplication app);