// Copyright 2014 The Flutter Authors. 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_api_samples/material/scaffold/scaffold_messenger.0.dart' as example; import 'package:flutter_test/flutter_test.dart'; void main() { testWidgets('The snack bar should be visible after tapping the button', ( WidgetTester tester, ) async { await tester.pumpWidget(const example.ScaffoldMessengerExampleApp()); expect(find.widgetWithText(AppBar, 'ScaffoldMessenger Sample'), findsOne); await tester.tap(find.widgetWithText(OutlinedButton, 'Show SnackBar')); await tester.pumpAndSettle(); expect(find.widgetWithText(SnackBar, 'A SnackBar has been shown.'), findsOne); }); }