blob: 06b0344308efc603c1e543dea9efe36cdea70371 [file] [log] [blame]
// 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.
// @dart = 2.8
import 'dart:typed_data';
import 'package:flutter/scheduler.dart';
import 'package:flutter/services.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:flutter/widgets.dart';
void main() {
test('attachRootWidget will schedule a frame', () async {
final WidgetsFlutterBinding binding = WidgetsFlutterBinding.ensureInitialized() as WidgetsFlutterBinding;
expect(SchedulerBinding.instance.hasScheduledFrame, isFalse);
// Framework starts with detached statue. Sends resumed signal to enable frame.
final ByteData message = const StringCodec().encodeMessage('AppLifecycleState.resumed');
await ServicesBinding.instance.defaultBinaryMessenger.handlePlatformMessage('flutter/lifecycle', message, (_) { });
binding.attachRootWidget(const Placeholder());
expect(SchedulerBinding.instance.hasScheduledFrame, isTrue);