// 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/switch/switch.3.dart'asexample;import'package:flutter_test/flutter_test.dart';voidmain(){testWidgets('Can toggle switch',(WidgetTestertester)async{awaittester.pumpWidget(constexample.SwitchApp(),);finalFinderswitchFinder=find.byType(Switch).first;SwitchmaterialSwitch=tester.widget<Switch>(switchFinder);expect(materialSwitch.value,true);awaittester.tap(switchFinder);awaittester.pumpAndSettle();materialSwitch=tester.widget<Switch>(switchFinder);expect(materialSwitch.value,false);});}