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105 lines
3.6 KiB
Dart
105 lines
3.6 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 'package:flutter_test/flutter_test.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter/rendering.dart';
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import 'package:flutter/scheduler.dart';
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import 'package:stocks/main.dart' as stocks;
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import 'package:stocks/stock_data.dart' as stock_data;
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import '../common.dart';
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const Duration kBenchmarkTime = const Duration(seconds: 15);
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class BenchmarkingBinding extends LiveTestWidgetsFlutterBinding {
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BenchmarkingBinding(this.stopwatch);
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final Stopwatch stopwatch;
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@override
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void handleBeginFrame(Duration rawTimeStamp) {
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stopwatch.start();
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super.handleBeginFrame(rawTimeStamp);
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stopwatch.stop();
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}
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}
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Future<Null> main() async {
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assert(false); // don't run this in checked mode! Use --release.
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stock_data.StockDataFetcher.actuallyFetchData = false;
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final Stopwatch wallClockWatch = new Stopwatch();
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final Stopwatch cpuWatch = new Stopwatch();
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new BenchmarkingBinding(cpuWatch);
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int totalOpenFrameElapsedMicroseconds = 0;
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int totalOpenIterationCount = 0;
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int totalCloseFrameElapsedMicroseconds = 0;
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int totalCloseIterationCount = 0;
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int totalSubsequentFramesElapsedMicroseconds = 0;
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int totalSubsequentFramesIterationCount = 0;
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await benchmarkWidgets((WidgetTester tester) async {
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stocks.main();
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await tester.pump(); // Start startup animation
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await tester.pump(const Duration(seconds: 1)); // Complete startup animation
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bool drawerIsOpen = false;
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wallClockWatch.start();
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while (wallClockWatch.elapsed < kBenchmarkTime) {
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cpuWatch.reset();
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if (drawerIsOpen) {
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await tester.tapAt(const Point(780.0, 250.0)); // Close drawer
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await tester.pump();
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totalCloseIterationCount += 1;
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totalCloseFrameElapsedMicroseconds += cpuWatch.elapsedMicroseconds;
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} else {
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await tester.tapAt(const Point(20.0, 50.0)); // Open drawer
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await tester.pump();
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totalOpenIterationCount += 1;
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totalOpenFrameElapsedMicroseconds += cpuWatch.elapsedMicroseconds;
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}
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drawerIsOpen = !drawerIsOpen;
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// Time how long each frame takes
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cpuWatch.reset();
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while (SchedulerBinding.instance.hasScheduledFrame) {
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await tester.pump();
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totalSubsequentFramesIterationCount += 1;
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}
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totalSubsequentFramesElapsedMicroseconds += cpuWatch.elapsedMicroseconds;
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}
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});
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final BenchmarkResultPrinter printer = new BenchmarkResultPrinter();
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printer.addResult(
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description: 'Stock animation',
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value: wallClockWatch.elapsedMicroseconds / (1000 * 1000),
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unit: 's',
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name: 'stock_animation_total_run_time',
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);
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printer.addResult(
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description: ' Opening first frame average time',
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value: totalOpenFrameElapsedMicroseconds / totalOpenIterationCount,
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unit: 'µs per frame ($totalOpenIterationCount frames)',
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name: 'stock_animation_open_first_frame_average',
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);
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printer.addResult(
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description: ' Closing first frame average time',
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value: totalCloseFrameElapsedMicroseconds / totalCloseIterationCount,
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unit: 'µs per frame ($totalCloseIterationCount frames)',
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name: 'stock_animation_close_first_frame_average',
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);
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printer.addResult(
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description: ' Subsequent frames average time',
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value: totalSubsequentFramesElapsedMicroseconds / totalSubsequentFramesIterationCount,
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unit: 'µs per frame ($totalSubsequentFramesIterationCount frames)',
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name: 'stock_animation_subsequent_frame_average',
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);
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printer.printToStdout();
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}
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