Тестирование на Android с Dagger 2

1. Тестирование с Dagger 2
на Android

2. Виды тестирования
• Простые Unit тесты
• Тестирование Android компонентов
• Instrumentation тесты

3. public final class SourcesContract {
public interface Presenter extends MVPPresenter<SourcesView> {
void openArticles(final @NonNull NewsSourceDto source);
}
public interface Starter {
void openArticles(final @NonNull NewsSourceDto source);
}
public interface SourcesView extends MVPView {
void setSources(@NonNull List<NewsSourceDto> sources);
void setProgressVisible(boolean visible);
void showError(@NonNull String errorMessage);
}
}

4. final class SourcesPresenter extends BasePresenter<SourcesContract.View>
implements SourcesContract.Presenter {
@Inject
SourcesPresenter(@NonNull Lazy<SourcesContract.Starter> starter,
@NonNull NewsSourcesDataSource dataSource,
@NonNull @Named(RxModule.COMPUTATION) Scheduler computationScheduler,
@NonNull @Named(RxModule.MAIN) Scheduler observerScheduler) {
…
}
}

5. public final class NewsSourcesDataSource {
@Inject
public NewsSourcesDataSource(@NonNull NewsSourcesRestService service,
@NonNull @Named(RxModule.NETWORK) Scheduler networkScheduler) {
…
}
…
}

6. public final class NewsSourcesDataSource {
@Inject
public NewsSourcesDataSource(@NonNull NewsSourcesRestService service,
@NonNull @Named(RxModule.NETWORK) Scheduler networkScheduler) {
…
}
…
}
public interface NewsSourcesRestService {
@NonNull
@GET("sources")
Single<NewsSourcesResponseDto> sources();
}

7. Unit Тесты

8. Что используется

9. Зависимости
testCompile 'org.mockito:mockito-core:2.8.9'
testCompile 'junit:junit:4.12'

10. @RunWith(MockitoJUnitRunner.class)
public class SourcesPresenterTest {
@Mock SourcesContract.Starter mMockStarter;
@Mock SourcesContract.View mMockView;
@Mock NewsSourcesRestService mMockRestService;
private SourcesPresenter mSourcesPresenter;
@Before
public void init() {
Scheduler testScheduler = …;
Lazy<SourcesContract.Starter> starter = () -> mMockStarter;
NewsSourcesDataSource dataSource =
new NewsSourcesDataSource(mMockRestService, testScheduler);
mSourcesPresenter = new SourcesPresenter(
starter, dataSource, testScheduler, testScheduler);
}
}

11. @Test
public void test() {
doAnswer(invocation -> Single.just(newNewsSourceDataResponse()))
.when(mMockRestService)
.sources();
mSourcesPresenter.attachView(mMockView);
verify(mMockView, times(1)).setProgressVisible(true);
verify(mMockRestService, times(1)).sources();
verify(mMockView, times(1)).setSources(any());
verify(mMockView, times(1)).setProgressVisible(false);
mSourcesPresenter.onDetachView();
mSourcesPresenter.onDestroyView();
}

12. Тестирование
компонентов Android SDK

13. Что используется

14. Зависимости
testCompile “org.mockito:mockito-core:2.8.9“
testCompile 'junit:junit:4.12'
testCompile "org.robolectric:robolectric:3.3.2"

15. @RunWith(RobolectricTestRunner.class)
@Config(sdk = Build.VERSION_CODES.LOLLIPOP, constants = BuildConfig.class)
public class SourcesActivityTest {
private SourcesActivity mSourcesActivity;
@Before
public void setup() {
mSourcesActivity = Robolectric.setupActivity(SourcesActivity.class);
}
@Test
public void test() throws Exception {
final View progressView =
mSourcesActivity.findViewById(R.id.progress);
assertThat(progressView.getVisibility(), equalTo(View.GONE));
final RecyclerView sourcesView =
(RecyclerView) mSourcesActivity.findViewById(R.id.list);
assertThat(sourcesView.getVisibility(), equalTo(View.VISIBLE));
final SourceAdapter adapter =
(SourceAdapter) sourcesView.getAdapter();
assertThat(adapter, notNullValue());
assertThat(adapter.getItemCount(), equalTo(1));
final NewsSourceDto source = adapter.getItem(0);
assertThat(source,
equalTo(newNewsSourceDataResponse().getSources().get(0)));
final View sourceView = sourcesView.getChildAt(0);
final TextView sourceNameView =
(TextView) sourceView.findViewById(R.id.name);
assertThat(sourceNameView.getText(), equalTo(source.getName()));
assertThat(sourceNameView.getVisibility(), equalTo(View.VISIBLE));
}
}

16. Проблемы
1.Необходимо сделать тесты синхронными
2.Необходимо заменить получение данных с
сервера на стабовые

17. Product Flavors
android {
flavorDimensions ‘mode'
productFlavors {
common {
dimension = 'mode'
}
mock {
dimension = 'mode'
}
}
}

18. Зависимости
mockCompile “org.mockito:mockito-core:2.8.9“
testCompile 'junit:junit:4.12'
testCompile "org.robolectric:robolectric:3.3.2"

19. android {
flavorDimensions ‘mode'
productFlavors {
common { dimension = 'mode'}
mock { dimension = 'mode'}
}
variantFilter { variant ->
if (variant.buildType.name != 'debug') {
def names = variant.flavors*.name
if (names.contains('mock')) {
setIgnore(true)
}
}
}
}
Product Flavors

20. app/src/main/java/com/kirich1409/news/dagger/RxModule.java

21. app/src/common/java/com/kirich1409/news/dagger/RxModule.java
app/src/mock/java/com/kirich1409/news/dagger/RxModule.java

22. Mock RxModule
@Module
public abstract class RxModule {
public static final String NETWORK = “network”,
MAIN = “main”,
COMPUTATION = “computation";
@Provides @Named(COMPUTATION)
public static Scheduler provideComputationScheduler() {
return Schedulers.computation();
}
@Provides @Named(NETWORK)
public static Scheduler provideNetworkScheduler() {
return Schedulers.computation();
}
@Provides @Named(MAIN)
public static Scheduler provideMainScheduler() {
return AndroidSchedulers.mainThread();
}
}

23. Mock NewsApiModule
@Module(includes = NewsNetworkModule.class)
public abstract class NewsApiModule {
@Singleton @Provides
static ArticlesRestService provideArticlesRestService() {
ArticlesRestService mock = Mockito.mock(ArticlesRestService.class);
ArticlesResponseDto responseDto = new ArticlesResponseDto(STATUS_ERROR, "", emptyList(), SORT_LATEST, 0, "");
Mockito.when(mock.articles(anyString(), isNull())).thenReturn(Single.just(responseDto));
return mock;
}
public static NewsSourcesResponseDto newNewsSourceDataResponse() {
NewsSourceDto newsSourceDto = new NewsSourceDto(
"sample_id","Sample news","Sample new for Unit test”, "http://www.sample.org/item.html");
return new NewsSourcesResponseDto(STATUS_OK, singletonList(newsSourceDto), 0, "");
}
@Singleton @Provides
static NewsSourcesRestService provideNewsSourcesRestService() {
NewsSourcesRestService mock = Mockito.mock(NewsSourcesRestService.class);
Mockito.when(mock.sources()).thenReturn(Single.just(newNewsSourceDataResponse()));
return mock;
}
}

24. Instrumentation тесты

25. Что используется

26. Зависимости
mockCompile “org.mockito:mockito-core:2.8.9“
androidTestCompile “org.mockito:mockito-android:2.8.9”
androidTestCompile “com.android.support.test.espresso:espresso-core:2.2.2”

27. Настройка сборки
android {
defaultConfig {
testInstrumentationRunner 'android.support.test.runner.AndroidJUnitRunner'
}
}

28. @RunWith(AndroidJUnit4.class) @LargeTest
public class SourceActivityTest {
@Rule
public IntentsTestRule<SourcesActivity> mActivityRule = new IntentsTestRule<>(SourcesActivity.class);
@Test
public void test() throws Exception {
onView(withId(R.id.list))
.check(matches(childCount(1)))
.check(matches(hasDescendant(withId(R.id.name))));
NewsSourcesResponseDto responseDto = NewsApiModule.newNewsSourceDataResponse();
onView(withId(R.id.name))
.check(matches(withText(responseDto.getSources().get(0).getName())));
onView(withId(R.id.list))
.perform(actionOnItemAtPosition(0, click()));
ComponentName articlesActivity =
new ComponentName(mActivityRule.getActivity(), ArticlesActivity.class);
intended(hasComponent(articlesActivity));
}
}

29. Espresso
• Core
• Contrib
• Idling Resources
• Intents
• Web

30. Материалы
• JUnit4
• Mockito
• Basic Guide
• Robolectric
• Android:Getting Started with Testing
• Android Testing Support Library
• Android Espresso
• Android Testing Codelab

31. Спасибо за внимание