[WIP] Instrumented tests with Dagger injection

TestApplication.kt

// https://android.jlelse.eu/how-to-inject-mock-dependencies-into-android-components-using-dagger-androidinjector-e274c8f6a9a6

class TestApplication : Application(), HasSupportFragmentInjector {

    @Inject
    lateinit var fragmentInjector: DispatchingAndroidInjector<Fragment>

    override fun supportFragmentInjector() = fragmentInjector
}

class CustomTestRunner : AndroidJUnitRunner() {

    override fun newApplication(cl: ClassLoader?, className: String?, context: Context?): Application {
        return super.newApplication(cl, TestApplication::class.java.name, context)
    }
}

@Singleton
@Component(modules = [TestApplicationModule::class, FragmentModule::class, AndroidSupportInjectionModule::class])
interface TestApplicationComponent : AndroidInjector<TestApplication> {

    @Component.Builder
    abstract class Builder : AndroidInjector.Builder<TestApplication>() {
        abstract fun appModule(appModule: TestApplicationModule): Builder
    }
}

@Module
class TestApplicationModule(
    private val userRepository: UserRepository = FakeUserRepository(),
    private val detailsRepository: DetailsRepository = FakeDetailsRepository()
) {

    @Provides
    @Singleton
    fun provideUserRepository(): UserRepository {
        return userRepository
    }

    @Provides
    @Singleton
    fun provideDetailsRepository(): DetailsRepository {
        return detailsRepository
    }

    @Provides
    @Singleton
    fun provideSchedulerProvider(): SchedulerProvider = AppSchedulerProvider()
}