// 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/slider/slider.0.dart' as example; import 'package:flutter_test/flutter_test.dart'; void main() { testWidgets('Slider can change its value', (WidgetTester tester) async { await tester.pumpWidget( const example.SliderApp(), ); expect(find.byType(Slider), findsOneWidget); final Finder sliderFinder = find.byType(Slider); Slider slider = tester.widget(sliderFinder); expect(slider.value, 20); final Offset center = tester.getCenter(sliderFinder); await tester.tapAt(Offset(center.dx + 100, center.dy)); await tester.pump(); slider = tester.widget(sliderFinder); expect(slider.value, 60.0); }); }