prokash-sarkar

class DefaultDataRepositoryTest {
    @Inject
    lateinit var dataRepository: DefaultDataRepository
    @Inject
    lateinit var remoteDataSource: DataSource
    
    @Before
    fun setup() {
        val component: TestAppComponent = DaggerTestAppComponent.factory()
            .create(TestBaseApplication())

prokash-sarkar

android {
    compileSdkVersion 30
    buildToolsVersion "30.0.2"
    defaultConfig {
        applicationId "com.example.dagger"
        minSdkVersion 16
        targetSdkVersion 30
        versionCode 1
        versionName "1.0"
        multiDexEnabled true

prokash-sarkar

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

prokash-sarkar

class TestBaseApplication : BaseApplication() {
    override fun initializeDaggerComponent(): AppComponent {
        val component: TestAppComponent = DaggerTestAppComponent.factory()
            .create(this)
        component.inject(this)
        return component
    }
}

prokash-sarkar

@Singleton
@Component(
    modules = [
        AndroidInjectionModule::class, NetworkModule::class,
        TestAppModule::class, AppModuleBinds::class,
        ViewModelBuilderModule::class, ActivityBuildersModule::class
    ]
)
interface TestAppComponent : AppComponent {
    @Component.Factory

prokash-sarkar

@Module
class TestAppModule {
    @Singleton
    @Provides
    fun provideTasksRemoteDataSource(
        apiService: ApiService
    ): DataSource {
        return mockk()
    }
}

prokash-sarkar

class DefaultDataRepositoryTest {
    private val remoteDataSource: DataSource = mockk()
    private lateinit var dataRepository: DefaultDataRepository
    
    @Before
    fun setup() {
        dataRepository = DefaultDataRepository(remoteDataSource)
    }
    
    @ExperimentalCoroutinesApi

prokash-sarkar

open class BaseApplication : DaggerApplication() {
    override fun applicationInjector(): AndroidInjector<out DaggerApplication> {
        return initializeDaggerComponent()
    }
    open fun initializeDaggerComponent(): AppComponent {
        val component: AppComponent = DaggerAppComponent.factory()
            .create(this)
        component.inject(this)
        return component
    }

prokash-sarkar

@Singleton
@Component(
    modules = [
        AndroidInjectionModule::class, NetworkModule::class,
        AppModule::class, AppModuleBinds::class,
        ViewModelBuilderModule::class, ActivityBuildersModule::class
    ]
)
interface AppComponent : AndroidInjector<DaggerApplication> {
    @Component.Factory

prokash-sarkar

@Module
class NetworkModule {
    @Singleton
    @Provides
    fun provideHttpLoggingInterceptor(): HttpLoggingInterceptor {
        return HttpLoggingInterceptor()
            .setLevel(HttpLoggingInterceptor.Level.BODY)
    }
    @Singleton
    @Provides