Configured project for Espresso testing

Created mock components to inject mock data for UI testing Added first Espresso test

Author: kozmi55

app/build.gradle

@@ -51,4 +51,12 @@ dependencies {
  androidTestImplementation ('com.android.support.test.espresso:espresso-core:2.2.2', {
  exclude group: 'com.android.support', module: 'support-annotations'
  })
+
+ androidTestImplementation('com.android.support.test.espresso:espresso-contrib:2.2') {
+ // Necessary to avoid version conflicts
+ exclude group: 'com.android.support', module: 'appcompat'
+ exclude group: 'com.android.support', module: 'support-v4'
+ exclude group: 'com.android.support', module: 'support-annotations'
+ exclude module: 'recyclerview-v7'
+ }
 }

app/src/androidTest/java/com/example/tamaskozmer/kotlinrxexample/mocks/di/components/MockApplicationComponent.kt

@@ -0,0 +1,13 @@
+package com.example.tamaskozmer.kotlinrxexample.mocks.di.components
+
+import com.example.tamaskozmer.kotlinrxexample.di.components.ApplicationComponent
+import com.example.tamaskozmer.kotlinrxexample.mocks.di.modules.MockApplicationModule
+import dagger.Component
+import javax.inject.Singleton
+
+/**
+ * Created by Tamas_Kozmer on 8/8/2017.
+ */
+@Singleton
+@Component(modules = arrayOf(MockApplicationModule::class))
+interface MockApplicationComponent : ApplicationComponent

app/src/androidTest/java/com/example/tamaskozmer/kotlinrxexample/mocks/di/modules/MockApplicationModule.kt

@@ -0,0 +1,34 @@
+package com.example.tamaskozmer.kotlinrxexample.mocks.di.modules
+
+import com.example.tamaskozmer.kotlinrxexample.mocks.model.repositories.MockDetailsRepository
+import com.example.tamaskozmer.kotlinrxexample.mocks.model.repositories.MockUserRepository
+import com.example.tamaskozmer.kotlinrxexample.model.repositories.DetailsRepository
+import com.example.tamaskozmer.kotlinrxexample.model.repositories.UserRepository
+import com.example.tamaskozmer.kotlinrxexample.util.AppSchedulerProvider
+import com.example.tamaskozmer.kotlinrxexample.util.SchedulerProvider
+import dagger.Module
+import dagger.Provides
+import javax.inject.Singleton
+
+/**
+ * Created by Tamas_Kozmer on 8/8/2017.
+ */
+@Module
+class MockApplicationModule {
+
+ @Provides
+ @Singleton
+ fun provideUserRepository() : UserRepository {
+ return MockUserRepository()
+ }
+
+ @Provides
+ @Singleton
+ fun provideDetailsRepository() : DetailsRepository {
+ return MockDetailsRepository()
+ }
+
+ @Provides
+ @Singleton
+ fun provideSchedulerProvider() : SchedulerProvider = AppSchedulerProvider()
+}

app/src/androidTest/java/com/example/tamaskozmer/kotlinrxexample/mocks/model/repositories/MockDetailsRepository.kt

@@ -0,0 +1,27 @@
+package com.example.tamaskozmer.kotlinrxexample.mocks.model.repositories
+
+import com.example.tamaskozmer.kotlinrxexample.model.entities.Answer
+import com.example.tamaskozmer.kotlinrxexample.model.entities.Question
+import com.example.tamaskozmer.kotlinrxexample.model.repositories.DetailsRepository
+import io.reactivex.Single
+
+/**
+ * Created by Tamas_Kozmer on 8/8/2017.
+ */
+class MockDetailsRepository : DetailsRepository {
+ override fun getQuestionsByUser(userId: Long, forced: Boolean): Single<List<Question>> {
+ TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+ }
+
+ override fun getAnswersByUser(userId: Long, forced: Boolean): Single<List<Answer>> {
+ TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+ }
+
+ override fun getFavoritesByUser(userId: Long, forced: Boolean): Single<List<Question>> {
+ TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+ }
+
+ override fun getQuestionsById(ids: List<Long>, userId: Long, forced: Boolean): Single<List<Question>> {
+ TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+ }
+}

app/src/androidTest/java/com/example/tamaskozmer/kotlinrxexample/mocks/model/repositories/MockUserRepository.kt

@@ -0,0 +1,25 @@
+package com.example.tamaskozmer.kotlinrxexample.mocks.model.repositories
+
+import com.example.tamaskozmer.kotlinrxexample.model.entities.User
+import com.example.tamaskozmer.kotlinrxexample.model.entities.UserListModel
+import com.example.tamaskozmer.kotlinrxexample.model.repositories.UserRepository
+import io.reactivex.Single
+import io.reactivex.SingleEmitter
+
+/**
+ * Created by Tamas_Kozmer on 8/8/2017.
+ */
+class MockUserRepository : UserRepository {
+
+ override fun getUsers(page: Int, forced: Boolean): Single<UserListModel> {
+ val users = (1..10L).map {
+ val number = (page - 1) * 10 + it
+ User(it, "User $number", number * 100, "")
+ }
+
+ return Single.create<UserListModel> { emitter: SingleEmitter<UserListModel> ->
+ val userListModel = UserListModel(users)
+ emitter.onSuccess(userListModel)
+ }
+ }
+}

…maskozmer/kotlinrxexample/UserDaoTest.kt …le/model/persistence/daos/UserDaoTest.ktapp/src/androidTest/java/com/example/tamaskozmer/kotlinrxexample/UserDaoTest.kt renamed to app/src/androidTest/java/com/example/tamaskozmer/kotlinrxexample/model/persistence/daos/UserDaoTest.kt app/src/androidTest/java/com/example/tamaskozmer/kotlinrxexample/UserDaoTest.kt renamed to app/src/androidTest/java/com/example/tamaskozmer/kotlinrxexample/model/persistence/daos/UserDaoTest.kt

@@ -1,11 +1,10 @@
-package com.example.tamaskozmer.kotlinrxexample
+package com.example.tamaskozmer.kotlinrxexample.model.persistence.daos
 
 import android.arch.persistence.room.Room
 import android.support.test.InstrumentationRegistry
 import android.support.test.runner.AndroidJUnit4
 import com.example.tamaskozmer.kotlinrxexample.model.entities.User
 import com.example.tamaskozmer.kotlinrxexample.model.persistence.AppDatabase
-import com.example.tamaskozmer.kotlinrxexample.model.persistence.daos.UserDao
 import org.junit.After
 import org.junit.Assert
 import org.junit.Before

app/src/androidTest/java/com/example/tamaskozmer/kotlinrxexample/testutil/RecyclerViewMatcher.java

@@ -0,0 +1,70 @@
+package com.example.tamaskozmer.kotlinrxexample.testutil;
+
+import android.content.res.Resources;
+import android.support.v7.widget.RecyclerView;
+import android.view.View;
+
+import org.hamcrest.Description;
+import org.hamcrest.Matcher;
+import org.hamcrest.TypeSafeMatcher;
+
+/**
+ * Helper class to match RecyclerView items by Danny Roa
+ * https://github.com/dannyroa/espresso-samples/blob/master/RecyclerView/app/src/androidTest/java/com/dannyroa/espresso_samples/recyclerview/RecyclerViewMatcher.java
+ * Created by dannyroa on 5/10/15.
+ */
+public class RecyclerViewMatcher {
+ private final int recyclerViewId;
+
+ public RecyclerViewMatcher(int recyclerViewId) {
+ this.recyclerViewId = recyclerViewId;
+ }
+
+ public Matcher<View> atPosition(final int position) {
+ return atPositionOnView(position, -1);
+ }
+
+ public Matcher<View> atPositionOnView(final int position, final int targetViewId) {
+
+ return new TypeSafeMatcher<View>() {
+ Resources resources = null;
+ View childView;
+
+ public void describeTo(Description description) {
+ String idDescription = Integer.toString(recyclerViewId);
+ if (this.resources != null) {
+ try {
+ idDescription = this.resources.getResourceName(recyclerViewId);
+ } catch (Resources.NotFoundException var4) {
+ idDescription = String.format("%s (resource name not found)", recyclerViewId);
+ }
+ }
+
+ description.appendText("with id: " + idDescription);
+ }
+
+ public boolean matchesSafely(View view) {
+
+ this.resources = view.getResources();
+
+ if (childView == null) {
+ RecyclerView recyclerView =
+ view.getRootView().findViewById(recyclerViewId);
+ if (recyclerView != null && recyclerView.getId() == recyclerViewId) {
+ childView = recyclerView.findViewHolderForAdapterPosition(position).itemView;
+ } else {
+ return false;
+ }
+ }
+
+ if (targetViewId == -1) {
+ return view == childView;
+ } else {
+ View targetView = childView.findViewById(targetViewId);
+ return view == targetView;
+ }
+
+ }
+ };
+ }
+}

app/src/androidTest/java/com/example/tamaskozmer/kotlinrxexample/view/fragments/UserListFragmentTest.kt

@@ -0,0 +1,56 @@
+package com.example.tamaskozmer.kotlinrxexample.view.fragments
+
+import android.content.Intent
+import android.support.test.InstrumentationRegistry
+import android.support.test.espresso.Espresso
+import android.support.test.espresso.assertion.ViewAssertions
+import android.support.test.espresso.matcher.ViewMatchers
+import android.support.test.rule.ActivityTestRule
+import android.support.test.runner.AndroidJUnit4
+import com.example.tamaskozmer.kotlinrxexample.CustomApplication
+import com.example.tamaskozmer.kotlinrxexample.DaggerMockApplicationComponent
+import com.example.tamaskozmer.kotlinrxexample.R
+import com.example.tamaskozmer.kotlinrxexample.mocks.di.modules.MockApplicationModule
+import com.example.tamaskozmer.kotlinrxexample.testutil.RecyclerViewMatcher
+import com.example.tamaskozmer.kotlinrxexample.view.activities.MainActivity
+import org.junit.Before
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+
+
+/**
+ * Created by Tamas_Kozmer on 8/8/2017.
+ */
+@RunWith(AndroidJUnit4::class)
+class UserListFragmentTest {
+
+ @Rule @JvmField
+ var activityRule = ActivityTestRule(MainActivity::class.java, true, false)
+
+ fun withRecyclerView(recyclerViewId: Int): RecyclerViewMatcher {
+ return RecyclerViewMatcher(recyclerViewId)
+ }
+
+ @Before
+ fun setUp() {
+ val instrumentation = InstrumentationRegistry.getInstrumentation()
+ val app = instrumentation.targetContext.applicationContext as CustomApplication
+
+ val testComponent = DaggerMockApplicationComponent.builder()
+ .mockApplicationModule(MockApplicationModule())
+ .build()
+ app.component = testComponent
+
+ activityRule.launchActivity(Intent())
+ }
+
+ @Test
+ fun testRecyclerViewShowingCorrectItems() {
+ Espresso.onView(withRecyclerView(R.id.recyclerView).atPositionOnView(0, R.id.name))
+ .check(ViewAssertions.matches(ViewMatchers.withText("User 1")))
+
+ Espresso.onView(withRecyclerView(R.id.recyclerView).atPositionOnView(3, R.id.name))
+ .check(ViewAssertions.matches(ViewMatchers.withText("User 4")))
+ }
+}

app/src/main/java/com/example/tamaskozmer/kotlinrxexample/CustomApplication.kt

@@ -11,16 +11,21 @@ import com.facebook.stetho.Stetho
  */
 class CustomApplication : Application() {
 
- val component: ApplicationComponent by lazy {
- DaggerApplicationComponent
- .builder()
- .applicationModule(ApplicationModule(this))
- .build()
- }
+ lateinit var component: ApplicationComponent
 
  override fun onCreate() {
  super.onCreate()
+
+ initAppComponent()
+
  Stetho.initializeWithDefaults(this);
  component.inject(this)
  }
+
+ private fun initAppComponent() {
+ component = DaggerApplicationComponent
+ .builder()
+ .applicationModule(ApplicationModule(this))
+ .build()
+ }
 }

app/src/main/java/com/example/tamaskozmer/kotlinrxexample/di/modules/ApplicationModule.kt

@@ -4,6 +4,8 @@ import android.arch.persistence.room.Room
 import android.content.Context
 import com.example.tamaskozmer.kotlinrxexample.CustomApplication
 import com.example.tamaskozmer.kotlinrxexample.model.persistence.AppDatabase
+import com.example.tamaskozmer.kotlinrxexample.model.repositories.DefaultDetailsRepository
+import com.example.tamaskozmer.kotlinrxexample.model.repositories.DefaultUserRepository
 import com.example.tamaskozmer.kotlinrxexample.model.repositories.DetailsRepository
 import com.example.tamaskozmer.kotlinrxexample.model.repositories.UserRepository
 import com.example.tamaskozmer.kotlinrxexample.model.services.QuestionService
@@ -41,7 +43,7 @@ class ApplicationModule(val application: CustomApplication) {
  @Singleton
  fun provideUserRepository(retrofit: Retrofit, database: AppDatabase, connectionHelper: ConnectionHelper,
  preferencesHelper: PreferencesHelper, calendarWrapper: CalendarWrapper): UserRepository {
- return UserRepository(
+ return DefaultUserRepository(
  retrofit.create(UserService::class.java),
  database.userDao(),
  connectionHelper,
@@ -53,7 +55,7 @@ class ApplicationModule(val application: CustomApplication) {
  @Singleton
  fun provideDetailsRepository(retrofit: Retrofit, database: AppDatabase, connectionHelper: ConnectionHelper,
  preferencesHelper: PreferencesHelper, calendarWrapper: CalendarWrapper) : DetailsRepository {
- return DetailsRepository(
+ return DefaultDetailsRepository(
  retrofit.create(UserService::class.java),
  retrofit.create(QuestionService::class.java),
  database.questionDao(),