test: add basic integration test

.github/workflows/github-actions.yml

@@ -57,6 +57,72 @@ jobs:
           files: ./coverage/lcov.info
           flags: appainter
 
+  integration-test:
+    name: Integration test
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        type: [macos, windows, linux]
+        include:
+          - type: macos
+            os: macos-latest
+
+          - type: windows
+            os: windows-latest
+
+          - type: linux
+            os: ubuntu-latest
+
+    steps:
+      - name: Checkout 🛎️
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
+
+      - name: Get project Flutter version 🏷️
+        id: fvm-config
+        uses: kuhnroyal/flutter-fvm-config-action@v1.2.0
+
+      - name: Setup Flutter 💻
+        uses: subosito/flutter-action@v2.12.0
+        id: setup-flutter
+        with:
+          flutter-version: ${{ steps.fvm-config.outputs.FLUTTER_VERSION }}
+          cache: true
+          cache-key: ${{ runner.os }}-flutter-${{ steps.fvm-config.outputs.FLUTTER_VERSION }}-${{ hashFiles('**/pubspec.lock') }}
+
+      - name: Cache Pub 💾
+        uses: actions/cache@v3
+        with:
+          path: |
+            ${{ env.PUB_CACHE }}
+            **/.dart_tool
+          key: ${{ runner.os }}-pub-${{ hashFiles('**/pubspec.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-pub-
+
+      - name: Patch for Linux build 🩹
+        if: ${{ matrix.type == 'linux' }}
+        run: |
+          sudo apt-get update -y
+          sudo apt-get install -y ninja-build libgtk-3-dev
+
+      - name: Write Google service info file for MacOS 📝
+        if: ${{ matrix.type == 'macos' }}
+        run: printf "${{ secrets.GOOGLE_SERVICE_INFO_MACOS }}" > macos/Runner/GoogleService-Info.plist
+
+      - name: Run tests 🧪
+        shell: bash
+        run: |
+          flutter pub get
+          flutter pub run build_runner build --delete-conflicting-outputs
+          flutter build ${{ matrix.type }} --no-tree-shake-icons --target=integration_test/app_test.dart
+
+          if [ "${{ matrix.type }}" == "linux" ]; then
+          xvfb-run flutter test integration_test -d ${{ matrix.type }}
+          else
+            flutter test integration_test -d ${{ matrix.type }}
+          fi
+
   lint:
     name: Lint
     runs-on: ubuntu-latest

integration_test/app_test.dart

@@ -0,0 +1,19 @@
+import 'package:appainter/basic_theme/basic_theme.dart';
+import 'package:appainter/main.dart' as app;
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:integration_test/integration_test.dart';
+
+void main() {
+  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+
+  group('end-to-end test', () {
+    testWidgets('render correctly', (tester) async {
+      await tester.binding.setSurfaceSize(const Size(2400, 850));
+      await app.main();
+      await tester.pumpAndSettle();
+
+      expect(find.byType(BasicThemeEditor), findsOneWidget);
+    });
+  });
+}

lib/main.dart

@@ -15,7 +15,7 @@ import 'package:window_manager/window_manager.dart';
 import 'app.dart';
 import 'bloc_observer.dart';
 
-void main() async {
+Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
   Bloc.observer = MyBlocObserver();
   EquatableConfig.stringify = kDebugMode;

pubspec.lock

@@ -227,10 +227,10 @@ packages:
     dependency: transitive
     description:
       name: coverage
-      sha256: ac86d3abab0f165e4b8f561280ff4e066bceaac83c424dd19f1ae2c2fcd12ca9
+      sha256: "595a29b55ce82d53398e1bcc2cba525d7bd7c59faeb2d2540e9d42c390cfeeeb"
       url: "https://pub.dev"
     source: hosted
-    version: "1.7.1"
+    version: "1.6.4"
   crypto:
     dependency: transitive
     description:
@@ -468,6 +468,11 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "8.1.3"
+  flutter_driver:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
   flutter_lints:
     dependency: "direct dev"
     description:
@@ -523,6 +528,11 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.2.0"
+  fuchsia_remote_debug_protocol:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
   glob:
     dependency: transitive
     description:
@@ -603,6 +613,11 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.0.0"
+  integration_test:
+    dependency: "direct dev"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
   intl:
     dependency: "direct main"
     description:
@@ -847,10 +862,10 @@ packages:
     dependency: transitive
     description:
       name: platform
-      sha256: "0a279f0707af40c890e80b1e9df8bb761694c074ba7e1d4ab1bc4b728e200b59"
+      sha256: ae68c7bfcd7383af3629daafb32fb4e8681c7154428da4febcff06200585f102
       url: "https://pub.dev"
     source: hosted
-    version: "3.1.3"
+    version: "3.1.2"
   plugin_platform_interface:
     dependency: transitive
     description:
@@ -1136,6 +1151,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.2.0"
+  sync_http:
+    dependency: transitive
+    description:
+      name: sync_http
+      sha256: "7f0cd72eca000d2e026bcd6f990b81d0ca06022ef4e32fb257b30d3d1014a961"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.3.1"
   system_info2:
     dependency: transitive
     description:
@@ -1308,10 +1331,10 @@ packages:
     dependency: transitive
     description:
       name: vm_service
-      sha256: b3d56ff4341b8f182b96aceb2fa20e3dcb336b9f867bc0eafc0de10f1048e957
+      sha256: c538be99af830f478718b51630ec1b6bee5e74e52c8a802d328d9e71d35d2583
       url: "https://pub.dev"
     source: hosted
-    version: "13.0.0"
+    version: "11.10.0"
   watcher:
     dependency: transitive
     description:
@@ -1336,6 +1359,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.4.0"
+  webdriver:
+    dependency: transitive
+    description:
+      name: webdriver
+      sha256: "3c923e918918feeb90c4c9fdf1fe39220fa4c0e8e2c0fffaded174498ef86c49"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.2"
   webkit_inspection_protocol:
     dependency: transitive
     description:

pubspec.yaml

@@ -57,6 +57,8 @@ dev_dependencies:
   flutter_lints: 3.0.1
   flutter_test:
     sdk: flutter
+  integration_test:
+    sdk: flutter
   mocktail: 1.0.1
   path_provider_platform_interface: 2.1.1
   remove_from_coverage: 2.0.0