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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>
84 lines
2.6 KiB
Dart
84 lines
2.6 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 'package:flutter/material.dart';
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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_test/flutter_test.dart' show collectAllElementsFrom;
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import '../common.dart';
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const int _kNumIters = 10000;
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Future<void> execute() async {
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runApp(
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MaterialApp(
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home: Scaffold(
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body: GridView.count(
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crossAxisCount: 5,
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children: List<Widget>.generate(25, (int index) {
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return Center(
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child: Scaffold(
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appBar: AppBar(
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title: Text('App $index'),
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actions: const <Widget>[Icon(Icons.help), Icon(Icons.add), Icon(Icons.ac_unit)],
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),
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body: const Column(
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children: <Widget>[
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Text('Item 1'),
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Text('Item 2'),
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Text('Item 3'),
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Text('Item 4'),
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],
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),
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),
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);
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}),
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),
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),
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),
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);
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// Lists may not be scrolled into frame in landscape.
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SystemChrome.setPreferredOrientations(<DeviceOrientation>[
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DeviceOrientation.portraitUp,
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DeviceOrientation.portraitDown,
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]);
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// Wait for frame rendering to stabilize.
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for (int i = 0; i < 5; i++) {
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await SchedulerBinding.instance.endOfFrame;
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}
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final Stopwatch watch = Stopwatch();
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print('flutter_test allElements benchmark... (${WidgetsBinding.instance.rootElement})');
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// Make sure we get enough elements to process for consistent benchmark runs
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int elementCount =
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collectAllElementsFrom(WidgetsBinding.instance.rootElement!, skipOffstage: false).length;
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while (elementCount < 2458) {
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await Future<void>.delayed(Duration.zero);
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elementCount =
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collectAllElementsFrom(WidgetsBinding.instance.rootElement!, skipOffstage: false).length;
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}
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print('element count: $elementCount');
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watch.start();
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for (int i = 0; i < _kNumIters; i += 1) {
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final List<Element> allElements =
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collectAllElementsFrom(WidgetsBinding.instance.rootElement!, skipOffstage: false).toList();
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allElements.clear();
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}
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watch.stop();
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final BenchmarkResultPrinter printer = BenchmarkResultPrinter();
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printer.addResult(
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description: 'All elements iterate',
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value: watch.elapsedMicroseconds / _kNumIters,
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unit: 'µs per iteration',
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name: 'all_elements_iteration',
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);
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printer.printToStdout();
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}
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