ci: e2e tests (#9)

.github/workflows/my_plugin.yaml

@@ -19,3 +19,137 @@ jobs:
       flutter_channel: stable
       flutter_version: 2.10.1
       working_directory: src/my_plugin
+
+  linux:
+    runs-on: ubuntu-18.04
+
+    defaults:
+      run:
+        working-directory: src/my_plugin/example
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: subosito/flutter-action@v2
+
+      - name: Install Dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libgtk-3-dev libx11-dev pkg-config cmake ninja-build libblkid-dev liblzma-dev
+
+      - name: Enable desktop support
+        run: flutter config --enable-linux-desktop
+
+      - name: Flutter Doctor
+        run: flutter doctor -v
+
+      - name: Integration Tests
+        run: xvfb-run flutter test integration_test -d linux
+
+  windows:
+    runs-on: windows-2019
+
+    defaults:
+      run:
+        working-directory: src/my_plugin/example
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: subosito/flutter-action@v2
+
+      - name: Enable desktop support
+        run: flutter config --enable-windows-desktop
+
+      - name: Flutter Doctor
+        run: flutter doctor -v
+
+      - name: Integration Tests
+        run: flutter test integration_test -d windows
+
+  macos:
+    runs-on: macos-10.15
+
+    defaults:
+      run:
+        working-directory: src/my_plugin/example
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: subosito/flutter-action@v2
+
+      - name: Enable desktop support
+        run: flutter config --enable-macos-desktop
+
+      - name: Flutter Doctor
+        run: flutter doctor -v
+
+      - name: Integration Tests
+        run: flutter test integration_test -d macos
+
+  ios:
+    runs-on: macos-10.15
+
+    defaults:
+      run:
+        working-directory: src/my_plugin/example
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: subosito/flutter-action@v2
+
+      - name: Flutter Doctor
+        run: flutter doctor -v
+
+      - name: Start Simulator
+        run: open -a Simulator.app
+
+      - name: Integration Tests
+        run: flutter test integration_test -d iPhone
+
+  android:
+    runs-on: macos-10.15
+
+    defaults:
+      run:
+        working-directory: src/my_plugin/example
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-java@v2
+        with:
+          distribution: "temurin"
+          java-version: "11"
+
+      - uses: subosito/flutter-action@v2
+
+      - name: Flutter Doctor
+        run: flutter doctor -v
+
+      - name: AVD Cache
+        uses: actions/cache@v2
+        id: avd-cache
+        with:
+          path: |
+            ~/.android/avd/*
+            ~/.android/adb*
+          key: avd-29
+
+      - name: Cache AVD Snapshot
+        if: steps.avd-cache.outputs.cache-hit != 'true'
+        uses: reactivecircus/android-emulator-runner@v2
+        with:
+          api-level: 29
+          force-avd-creation: false
+          emulator-options: -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim -camera-back none
+          disable-animations: false
+          script: echo "Generated AVD snapshot for caching."
+
+      - name: Integration Tests
+        uses: reactivecircus/android-emulator-runner@v2
+        with:
+          api-level: 29
+          script: flutter test integration_test
+          working-directory: src/my_plugin/example

src/my_plugin/example/integration_test/app_test.dart

@@ -0,0 +1,30 @@
+import 'dart:io';
+
+import 'package:flutter_test/flutter_test.dart';
+import 'package:integration_test/integration_test.dart';
+
+import 'package:my_plugin_example/main.dart' as app;
+
+void main() {
+  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+
+  group('E2E', () {
+    testWidgets('getPlatformName', (tester) async {
+      app.main();
+      await tester.pumpAndSettle();
+      await tester.tap(find.text('Get Platform Name'));
+      await tester.pumpAndSettle();
+      final expected = expectedPlatformName();
+      await tester.ensureVisible(find.text('Platform Name: $expected'));
+    });
+  });
+}
+
+String expectedPlatformName() {
+  if (Platform.isAndroid) return 'Android';
+  if (Platform.isIOS) return 'iOS';
+  if (Platform.isLinux) return 'Linux';
+  if (Platform.isMacOS) return 'MacOS';
+  if (Platform.isWindows) return 'Windows';
+  throw UnsupportedError('Unsupported platform ${Platform.operatingSystem}');
+}

src/my_plugin/example/pubspec.yaml

@@ -19,6 +19,10 @@ dependencies:
     path: ../
 
 dev_dependencies:
+  flutter_test:
+    sdk: flutter
+  integration_test:
+    sdk: flutter
   very_good_analysis: ^2.4.0
 
 flutter:

src/my_plugin/pubspec.yaml

@@ -37,9 +37,9 @@ dependencies:
   my_plugin_windows:
     path: ../my_plugin_windows
 
-dev_dependencies:  
+dev_dependencies:
   flutter_test:
-    sdk: flutter  
+    sdk: flutter
   mocktail: ^0.2.0
   plugin_platform_interface: ^2.0.0
   very_good_analysis: ^2.4.0