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

platform_design/test/widget_test.dart

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+// 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/cupertino.dart';
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+import 'package:platform_design/main.dart';
+
+void main() {
+  group('Platform tests', () {
+    testWidgets('Builds for Android correctly', (tester) async {
+      debugDefaultTargetPlatformOverride = TargetPlatform.android;
+      await tester.pumpWidget(const MyAdaptingApp());
+
+      // The test should be able to find the drawer button.
+      expect(find.byIcon(Icons.menu), findsOneWidget);
+      // There should be a refresh button.
+      expect(find.byIcon(Icons.refresh), findsOneWidget);
+
+      // Since this is a static, undo any change made in the test.
+      debugDefaultTargetPlatformOverride = null;
+    });
+
+    testWidgets('Builds for iOS correctly', (tester) async {
+      debugDefaultTargetPlatformOverride = TargetPlatform.iOS;
+      await tester.pumpWidget(const MyAdaptingApp());
+
+      // There should now be a large title style nav bar.
+      expect(find.byType(CupertinoSliverNavigationBar), findsOneWidget);
+      // There's a tab button for the first tab.
+      expect(find.byIcon(CupertinoIcons.music_note), findsOneWidget);
+      // The hamburger button isn't there anymore.
+      expect(find.byIcon(Icons.menu), findsNothing);
+
+      // Since this is a static, undo any change made in the test.
+      debugDefaultTargetPlatformOverride = null;
+    });
+  });
+}