Add flutter test

Author: WishyutC

.github/workflows/quality.yml

@@ -14,9 +14,9 @@ jobs:
 
       - name: Generate localization files
         run: flutter gen-l10n
-        
       - run: dart format --set-exit-if-changed .
       - run: flutter analyze
+      - run: flutter test
       - name: Run Dart Code Metrics
         run: |
           dart pub global activate dart_code_metrics

test/widget_test.dart

@@ -1,3 +1,34 @@
+// import 'package:flutter/material.dart';
+// import 'package:flutter_test/flutter_test.dart';
+// import 'package:provider/provider.dart';
+
+// import 'package:vpn_client/main.dart';
+// import 'package:vpn_client/theme_provider.dart';
+
+// void main() {
+//   testWidgets('Counter increments smoke test', (WidgetTester tester) async {
+//     await tester.pumpWidget(
+//       MultiProvider(
+//         providers: [
+//           ChangeNotifierProvider<ThemeProvider>(create: (_) => ThemeProvider()),
+//         ],
+//         child: const MaterialApp(home: App()),
+//       ),
+//     );
+//                                             <-- This test is designed for Flutter's default counter app, which are not using. So ours app doesn’t show '0' or '1', which leads to: error test
+
+
+//     expect(find.text('0'), findsOneWidget);
+//     expect(find.text('1'), findsNothing);
+
+//     await tester.tap(find.byIcon(Icons.add));
+//     await tester.pump();
+
+//     expect(find.text('0'), findsNothing);
+//     expect(find.text('1'), findsOneWidget);
+//   });
+// }
+
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:provider/provider.dart';
@@ -6,7 +37,7 @@ import 'package:vpn_client/main.dart';
 import 'package:vpn_client/theme_provider.dart';
 
 void main() {
-  testWidgets('Counter increments smoke test', (WidgetTester tester) async {
+  testWidgets('App shows VPN status on launch', (WidgetTester tester) async {
     await tester.pumpWidget(
       MultiProvider(
         providers: [
@@ -16,13 +47,13 @@ void main() {
       ),
     );
 
-    expect(find.text('0'), findsOneWidget);
-    expect(find.text('1'), findsNothing);
-
-    await tester.tap(find.byIcon(Icons.add));
-    await tester.pump();
-
-    expect(find.text('0'), findsNothing);
-    expect(find.text('1'), findsOneWidget);
+    // Check that 'CONNECTED' or 'DISCONNECTED' appears on screen
+    expect(
+      find.byWidgetPredicate(
+        (widget) => widget is Text && 
+                    (widget.data == 'CONNECTED' || widget.data == 'DISCONNECTED'),
+      ),
+      findsOneWidget,
+    );
   });
 }