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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>
88 lines
3.7 KiB
Dart
88 lines
3.7 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/foundation.dart';
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import 'package:flutter/gestures.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'package:integration_test/integration_test.dart';
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import 'package:macrobenchmarks/src/simple_scroll.dart';
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void main() {
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final IntegrationTestWidgetsFlutterBinding binding =
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IntegrationTestWidgetsFlutterBinding.ensureInitialized();
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testWidgets('Frame Counter and Input Delay for benchmarkLive', (WidgetTester tester) async {
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await tester.pumpWidget(const MaterialApp(home: Scaffold(body: SimpleScroll())));
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await tester.pumpAndSettle();
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final Offset location = tester.getCenter(find.byType(ListView));
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int frameCount = 0;
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void frameCounter(Duration elapsed) {
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frameCount += 1;
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}
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tester.binding.addPersistentFrameCallback(frameCounter);
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const int timeInSecond = 1;
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const Duration totalTime = Duration(seconds: timeInSecond);
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const int moveEventNumber = timeInSecond * 120; // 120Hz
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const Offset movePerRun = Offset(0.0, -200.0 / moveEventNumber);
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final List<PointerEventRecord> records = <PointerEventRecord>[
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PointerEventRecord(Duration.zero, <PointerEvent>[
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PointerAddedEvent(position: location),
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PointerDownEvent(position: location, pointer: 1),
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]),
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...<PointerEventRecord>[
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for (int t = 0; t < moveEventNumber; t++)
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PointerEventRecord(totalTime * (t / moveEventNumber), <PointerEvent>[
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PointerMoveEvent(
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timeStamp: totalTime * (t / moveEventNumber),
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position: location + movePerRun * t.toDouble(),
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pointer: 1,
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delta: movePerRun,
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),
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]),
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],
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PointerEventRecord(totalTime, <PointerEvent>[
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PointerUpEvent(
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// Deviate a little from integer number of frames to reduce flakiness
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timeStamp: totalTime - const Duration(milliseconds: 1),
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position: location + movePerRun * moveEventNumber.toDouble(),
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pointer: 1,
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),
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]),
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];
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binding.framePolicy = LiveTestWidgetsFlutterBindingFramePolicy.benchmarkLive;
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List<Duration> delays = await tester.handlePointerEventRecord(records);
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await tester.pumpAndSettle();
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binding.reportData = <String, dynamic>{'benchmarkLive': _summarizeResult(frameCount, delays)};
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await tester.idle();
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await tester.binding.delayed(const Duration(milliseconds: 250));
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binding.framePolicy = LiveTestWidgetsFlutterBindingFramePolicy.fullyLive;
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frameCount = 0;
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delays = await tester.handlePointerEventRecord(records);
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await tester.pumpAndSettle();
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binding.reportData!['fullyLive'] = _summarizeResult(frameCount, delays);
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await tester.idle();
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});
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}
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Map<String, dynamic> _summarizeResult(final int frameCount, final List<Duration> delays) {
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assert(delays.length > 1);
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final List<int> delayedInMicro =
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delays.map<int>((Duration delay) => delay.inMicroseconds).toList();
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final List<int> delayedInMicroSorted = List<int>.from(delayedInMicro)..sort();
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final int index90th = (delayedInMicroSorted.length * 0.90).round();
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final int percentile90th = delayedInMicroSorted[index90th];
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final int sum = delayedInMicroSorted.reduce((int a, int b) => a + b);
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final double averageDelay = sum.toDouble() / delayedInMicroSorted.length;
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return <String, dynamic>{
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'frame_count': frameCount,
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'average_delay_millis': averageDelay / 1E3,
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'90th_percentile_delay_millis': percentile90th / 1E3,
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if (kDebugMode) 'delaysInMicro': delayedInMicro,
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};
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}
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