// 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/scheduler.dart';import'package:flutter/widgets.dart';import'package:flutter_test/flutter_test.dart';voidmain(){WidgetsFlutterBinding.ensureInitialized();test('scheduleForcedFrame sets up frame callbacks',()async{SchedulerBinding.instance.scheduleForcedFrame();expect(SchedulerBinding.instance.platformDispatcher.onBeginFrame,isNotNull);});}