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86 lines
2.8 KiB
Dart
86 lines
2.8 KiB
Dart
// Copyright 2016 The Chromium 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 'dart:math' as math;
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import '../framework/adb.dart';
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import '../framework/framework.dart';
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import '../framework/utils.dart';
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TaskFunction createGalleryTransitionTest() {
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return new GalleryTransitionTest();
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}
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class GalleryTransitionTest {
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Future<TaskResult> call() async {
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Device device = await devices.workingDevice;
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await device.unlock();
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String deviceId = device.deviceId;
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Directory galleryDirectory =
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dir('${flutterDirectory.path}/examples/flutter_gallery');
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await inDirectory(galleryDirectory, () async {
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await flutter('packages', options: <String>['get']);
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if (deviceOperatingSystem == DeviceOperatingSystem.ios) {
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// This causes an Xcode project to be created.
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await flutter('build', options: <String>['ios', '--profile']);
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}
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await flutter('drive', options: <String>[
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'--profile',
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'--trace-startup',
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'-t',
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'test_driver/transitions_perf.dart',
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'-d',
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deviceId,
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]);
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});
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// Route paths contains slashes, which Firebase doesn't accept in keys, so we
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// remove them.
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Map<String, List<int>> original = JSON.decode(file(
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'${galleryDirectory.path}/build/transition_durations.timeline.json')
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.readAsStringSync());
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Map<String, List<int>> transitions = new Map<String, List<int>>.fromIterable(
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original.keys,
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key: (String key) => key.replaceAll('/', ''),
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value: (String key) => original[key]);
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Map<String, dynamic> summary = JSON.decode(file('${galleryDirectory.path}/build/transitions.timeline_summary.json').readAsStringSync());
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Map<String, dynamic> data = <String, dynamic>{
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'transitions': transitions,
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'missed_transition_count': _countMissedTransitions(transitions),
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};
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data.addAll(summary);
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return new TaskResult.success(data, benchmarkScoreKeys: <String>[
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'missed_transition_count',
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'average_frame_build_time_millis',
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'worst_frame_build_time_millis',
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'missed_frame_build_budget_count',
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'average_frame_rasterizer_time_millis',
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'worst_frame_rasterizer_time_millis',
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'missed_frame_rasterizer_budget_count',
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]);
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}
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}
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int _countMissedTransitions(Map<String, List<int>> transitions) {
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const int _kTransitionBudget = 100000; // µs
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int count = 0;
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transitions.forEach((String demoName, List<int> durations) {
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int longestDuration = durations.reduce(math.max);
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if (longestDuration > _kTransitionBudget) {
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print('$demoName missed transition time budget ($longestDuration µs > $_kTransitionBudget µs)');
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count++;
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}
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});
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return count;
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}
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