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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>
89 lines
2.8 KiB
Dart
89 lines
2.8 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:async';
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import 'dart:convert';
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import 'dart:io';
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import 'package:flutter_driver/flutter_driver.dart';
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import 'package:path/path.dart' as p;
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import 'package:test/test.dart' hide TypeMatcher, isInstanceOf;
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void main() {
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group('semantics performance test', () {
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late FlutterDriver driver;
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setUpAll(() async {
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// Turn off any accessibility services that may be running. The purpose of
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// the test is to measure the time it takes to create the initial
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// semantics tree in isolation. If accessibility services are on, the
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// semantics tree gets generated during the first frame and we can't
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// measure it in isolation.
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final Process run = await Process.start(_adbPath(), const <String>[
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'shell',
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'settings',
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'put',
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'secure',
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'enabled_accessibility_services',
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'null',
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]);
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await run.exitCode;
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driver = await FlutterDriver.connect(printCommunication: true);
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});
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tearDownAll(() async {
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driver.close();
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});
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test('initial tree creation', () async {
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// Let app become fully idle.
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await Future<void>.delayed(const Duration(seconds: 2));
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await driver.forceGC();
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final Timeline timeline = await driver.traceAction(() async {
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expect(
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await driver.setSemantics(true),
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isTrue,
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reason:
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'Could not toggle semantics to on because semantics were already '
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'on, but the test needs to toggle semantics to measure the initial '
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'semantics tree generation in isolation.',
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);
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});
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final Iterable<TimelineEvent>? semanticsEvents = timeline.events?.where(
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(TimelineEvent event) => event.name == 'SEMANTICS',
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);
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if (semanticsEvents?.length != 2) {
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fail(
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'Expected exactly two "SEMANTICS" events, got ${semanticsEvents?.length}:\n$semanticsEvents',
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);
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}
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final Duration semanticsTreeCreation = Duration(
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microseconds:
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semanticsEvents!.last.timestampMicros! - semanticsEvents.first.timestampMicros!,
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);
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final String jsonEncoded = json.encode(<String, dynamic>{
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'initialSemanticsTreeCreation': semanticsTreeCreation.inMilliseconds,
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});
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File(
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p.join(testOutputsDirectory, 'complex_layout_semantics_perf.json'),
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).writeAsStringSync(jsonEncoded);
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}, timeout: Timeout.none);
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});
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}
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String _adbPath() {
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final String? androidHome =
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Platform.environment['ANDROID_HOME'] ?? Platform.environment['ANDROID_SDK_ROOT'];
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if (androidHome == null) {
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return 'adb';
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} else {
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return p.join(androidHome, 'platform-tools', 'adb');
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}
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}
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