blob: 03b5b7ed238e11cedf0f2beca27337b1b08701f9 [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.
import 'package:flutter/scheduler.dart';
import 'package:flutter/services.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter_test/flutter_test.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);
});
}