| // 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/widgets/value_listenable_builder/value_listenable_builder.0.dart' as example; |
| import 'package:flutter_test/flutter_test.dart'; |
| |
| void main() { |
| testWidgets('Tapping FAB increments counter', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| const MaterialApp( |
| home: example.ValueListenableBuilderExample(), |
| ), |
| ); |
| |
| String getCount() { |
| return (tester.widget( |
| find.descendant( |
| of: find.byType(example.CountDisplay), |
| matching: find.byType(Text), |
| ), |
| ) as Text).data!; |
| } |
| |
| expect(find.text('You have pushed the button this many times:'), findsOneWidget); |
| expect(find.text('0'), findsOneWidget); |
| expect(find.byIcon(Icons.plus_one), findsOneWidget); |
| expect(getCount(), equals('0')); |
| |
| await tester.tap(find.byType(FloatingActionButton).first); |
| await tester.pumpAndSettle(); |
| expect(getCount(), equals('1')); |
| }); |
| } |