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This auto-formats all *.dart files in the repository outside of the `engine` subdirectory and enforces that these files stay formatted with a presubmit check. **Reviewers:** Please carefully review all the commits except for the one titled "formatted". The "formatted" commit was auto-generated by running `dev/tools/format.sh -a -f`. The other commits were hand-crafted to prepare the repo for the formatting change. I recommend reviewing the commits one-by-one via the "Commits" tab and avoiding Github's "Files changed" tab as it will likely slow down your browser because of the size of this PR. --------- Co-authored-by: Kate Lovett <katelovett@google.com> Co-authored-by: LongCatIsLooong <31859944+LongCatIsLooong@users.noreply.github.com>
52 lines
2.1 KiB
Dart
52 lines
2.1 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'dart:ui';
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import 'package:flutter/scheduler.dart';
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import 'package:flutter/services.dart';
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import 'package:flutter/widgets.dart';
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import 'package:flutter_test/flutter_test.dart';
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void main() {
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test(
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'Instantiating WidgetsFlutterBinding does neither schedule a frame nor register frame callbacks',
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() async {
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// Regression test for https://github.com/flutter/flutter/issues/39494.
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// Preconditions.
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expect(PlatformDispatcher.instance.onBeginFrame, isNull);
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expect(PlatformDispatcher.instance.onDrawFrame, isNull);
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// Instantiation does nothing with regards to frame scheduling.
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final WidgetsFlutterBindingWithTestBinaryMessenger binding =
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WidgetsFlutterBindingWithTestBinaryMessenger();
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expect(binding, isA<WidgetsFlutterBinding>());
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expect(SchedulerBinding.instance.hasScheduledFrame, isFalse);
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expect(PlatformDispatcher.instance.onBeginFrame, isNull);
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expect(PlatformDispatcher.instance.onDrawFrame, isNull);
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// Framework starts with detached statue. Sends resumed signal to enable frame.
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final ByteData message = const StringCodec().encodeMessage('AppLifecycleState.resumed')!;
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await binding.defaultBinaryMessenger.handlePlatformMessage(
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'flutter/lifecycle',
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message,
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(_) {},
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);
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expect(PlatformDispatcher.instance.onBeginFrame, isNull);
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expect(PlatformDispatcher.instance.onDrawFrame, isNull);
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expect(SchedulerBinding.instance.hasScheduledFrame, isFalse);
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// Frame callbacks are registered lazily (and a frame scheduled) when the root widget is attached.
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WidgetsBinding.instance.attachRootWidget(const Placeholder());
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expect(PlatformDispatcher.instance.onBeginFrame, isNotNull);
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expect(PlatformDispatcher.instance.onDrawFrame, isNotNull);
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expect(SchedulerBinding.instance.hasScheduledFrame, isTrue);
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},
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);
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}
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class WidgetsFlutterBindingWithTestBinaryMessenger extends WidgetsFlutterBinding
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with TestDefaultBinaryMessengerBinding {}
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