Add integration test for Android (using Espresso)

packages/video_player/video_player_android/example/android/app/build.gradle

@@ -57,9 +57,13 @@ flutter {
 }
 
 dependencies {
+    testImplementation 'androidx.test.ext:junit:1.2.1'
+    testImplementation "com.google.truth:truth:1.1.3"
     testImplementation 'junit:junit:4.13'
     testImplementation 'org.robolectric:robolectric:4.10.3'
     testImplementation 'org.mockito:mockito-core:5.0.0'
     androidTestImplementation 'androidx.test:runner:1.1.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
+    implementation project(':espresso')
+    api 'androidx.test:core:1.2.0'
 }

packages/video_player/video_player_android/example/android/app/src/androidTest/java/io/flutter/plugins/videoplayerexample/VideoPlayerUITest.java

@@ -0,0 +1,72 @@
+// Copyright 2013 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package io.flutter.plugins.videoplayerexample;
+
+import static androidx.test.espresso.flutter.EspressoFlutter.onFlutterWidget;
+import static androidx.test.espresso.flutter.EspressoFlutter.WidgetInteraction;
+import static androidx.test.espresso.flutter.action.FlutterActions.click;
+import static androidx.test.espresso.flutter.assertion.FlutterAssertions.matches;
+import static androidx.test.espresso.flutter.matcher.FlutterMatchers.isExisting;
+import static androidx.test.espresso.flutter.matcher.FlutterMatchers.withText;
+import static androidx.test.espresso.flutter.matcher.FlutterMatchers.withValueKey;
+
+import androidx.test.ext.junit.rules.ActivityScenarioRule;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+public class VideoPlayerUITest {
+
+  @Rule
+  public ActivityScenarioRule<DriverExtensionActivity> activityRule =
+      new ActivityScenarioRule<>(DriverExtensionActivity.class);
+
+  @Test
+  public void playVideo() {
+    WidgetInteraction remoteTab = onFlutterWidget(withText("Remote"));
+    remoteTab.check(matches(isExisting()));
+
+    for (String tabName : new String[] {"Platform view", "Texture view"}) {
+      WidgetInteraction viewTypeTab = onFlutterWidget(withText(tabName));
+      viewTypeTab.check(matches(isExisting()));
+      viewTypeTab.perform(click());
+
+      WidgetInteraction playButton = onFlutterWidget(withValueKey("Play"));
+      playButton.check(matches(isExisting()));
+      playButton.perform(click());
+
+      WidgetInteraction playbackSpeed1x = onFlutterWidget(withText("1.0x"));
+      playbackSpeed1x.check(matches(isExisting()));
+      playbackSpeed1x.perform(click());
+
+      WidgetInteraction playbackSpeed5xButton = onFlutterWidget(withText("5.0x"));
+      playbackSpeed5xButton.check(matches(isExisting()));
+      playbackSpeed5xButton.perform(click());
+
+      WidgetInteraction playbackSpeed5x = onFlutterWidget(withText("5.0x"));
+      playbackSpeed5x.check(matches(isExisting()));
+    }
+
+    for (String[] tabData :
+        new String[][] {{"Asset", "With assets mp4"}, {"Remote", "With remote mp4"}}) {
+      String tabName = tabData[0];
+      String videoDescription = tabData[1];
+      WidgetInteraction tab = onFlutterWidget(withText(tabName));
+      WidgetInteraction tabDescription = onFlutterWidget(withText(videoDescription));
+      tab.check(matches(isExisting()));
+
+      // TODO(FirentisTFW): Assert that testDescription is not visible before we tap on tab.
+      //  This should be done once the Espresso API allows us to perform such an assertion. See
+      //  https://github.com/flutter/flutter/issues/160599
+
+      tab.perform(click());
+
+      tab.check(matches(isExisting()));
+      tabDescription.check(matches(isExisting()));
+    }
+  }
+}

packages/video_player/video_player_android/example/android/app/src/debug/AndroidManifest.xml

@@ -0,0 +1,20 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- The INTERNET permission is required for development. Specifically,
+         the Flutter tool needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <application android:usesCleartextTraffic="true">
+        <activity
+            android:name="io.flutter.plugins.videoplayerexample.DriverExtensionActivity"
+            android:launchMode="singleTop"
+            android:theme="@style/LaunchTheme"
+            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
+            android:hardwareAccelerated="true"
+            android:windowSoftInputMode="adjustResize">
+            <meta-data
+                android:name="io.flutter.Entrypoint"
+                android:value="integrationTestMain" />
+        </activity>
+    </application>
+</manifest>

packages/video_player/video_player_android/example/android/app/src/main/java/io/flutter/plugins/videoplayerexample/DriverExtensionActivity.java

@@ -0,0 +1,10 @@
+// Copyright 2013 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package io.flutter.plugins.videoplayerexample;
+
+import io.flutter.embedding.android.FlutterActivity;
+
+/** Test Activity that sets the name of the Dart method entrypoint in the manifest. */
+public class DriverExtensionActivity extends FlutterActivity {}

packages/video_player/video_player_android/example/android/app/src/main/res/xml/network_security_config.xml

@@ -3,5 +3,7 @@
     <domain-config cleartextTrafficPermitted="true">
         <domain includeSubdomains="true">www.sample-videos.com</domain>
         <domain includeSubdomains="true">184.72.239.149</domain>
+        <!-- Needed for Espresso integration test -->
+        <domain includeSubdomains="true">127.0.0.1</domain>
     </domain-config>
 </network-security-config>

packages/video_player/video_player_android/example/integration_test/video_player_android_test.dart

@@ -0,0 +1,19 @@
+import 'package:flutter_driver/driver_extension.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:integration_test/integration_test.dart';
+import 'package:video_player_example/main.dart' as app;
+
+@pragma('vm:entry-point')
+void integrationTestMain() {
+  enableFlutterDriverExtension();
+
+  app.main();
+}
+
+void main() {
+  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+
+  // Since this test is lacking integration tests, this test ensures the example
+  // app can be launched on an emulator/device.
+  testWidgets('Launch Test', (WidgetTester tester) async {});
+}