snapshot of https://github.com/flutter/samples.git (main, 2026-09-16; blobs > 131072B omitted)

testing_app/test/favorites_test.dart

@@ -0,0 +1,71 @@
+// Copyright 2020 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:provider/provider.dart';
+import 'package:testing_app/models/favorites.dart';
+import 'package:testing_app/screens/favorites.dart';
+
+late Favorites favoritesList;
+
+Widget createFavoritesScreen() => ChangeNotifierProvider<Favorites>(
+  create: (context) {
+    favoritesList = Favorites();
+    return favoritesList;
+  },
+  child: const MaterialApp(home: FavoritesPage()),
+);
+
+void addItems() {
+  for (var i = 0; i < 5; i++) {
+    favoritesList.add(i);
+  }
+}
+
+void main() {
+  group('Favorites Page Widget Tests', () {
+    testWidgets('Test if Placeholder shows in case of empty list', (
+      tester,
+    ) async {
+      await tester.pumpWidget(createFavoritesScreen());
+
+      // Verify if the placeholder text shows up.
+      expect(find.text('No favorites added.'), findsOneWidget);
+    });
+
+    testWidgets('Test if ListView shows up', (tester) async {
+      await tester.pumpWidget(createFavoritesScreen());
+
+      addItems();
+      await tester.pumpAndSettle();
+
+      // Verify if ListView shows up.
+      expect(find.byType(ListView), findsOneWidget);
+    });
+
+    testWidgets('Testing Remove Button', (tester) async {
+      await tester.pumpWidget(createFavoritesScreen());
+
+      addItems();
+      await tester.pumpAndSettle();
+
+      // Get the total number of items available.
+      final totalItems = tester.widgetList(find.byIcon(Icons.close)).length;
+
+      // Remove one item.
+      await tester.tap(find.byIcon(Icons.close).first);
+      await tester.pumpAndSettle();
+
+      // Check if removed properly.
+      expect(
+        tester.widgetList(find.byIcon(Icons.close)).length,
+        lessThan(totalItems),
+      );
+
+      // Verify if the appropriate message is shown.
+      expect(find.text('Removed from favorites.'), findsOneWidget);
+    });
+  });
+}