flutter/dev/benchmarks/microbenchmarks/lib/stocks/layout_bench.dart
Jason Simmons 59cacd7102 Some fixes for the microbenchmarks (#7781)
* Return null from VM.mainView if no view exists
* Retry in connectToServiceProtocol if a view is not yet available
* Do not explicitly call exit from the benchmarks - it will not cleanly shut down the engine
2017-02-01 11:54:27 -08:00

49 lines
1.6 KiB
Dart

import 'dart:async';
import 'package:flutter_test/flutter_test.dart';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:stocks/main.dart' as stocks;
import 'package:stocks/stock_data.dart' as stock_data;
import '../common.dart';
const Duration kBenchmarkTime = const Duration(seconds: 15);
Future<Null> main() async {
stock_data.StockDataFetcher.actuallyFetchData = false;
final Stopwatch watch = new Stopwatch();
int iterations = 0;
await benchmarkWidgets((WidgetTester tester) async {
stocks.main();
await tester.pump(); // Start startup animation
await tester.pump(const Duration(seconds: 1)); // Complete startup animation
await tester.tapAt(new Point(20.0, 20.0)); // Open drawer
await tester.pump(); // Start drawer animation
await tester.pump(const Duration(seconds: 1)); // Complete drawer animation
final TestViewConfiguration big = new TestViewConfiguration(size: const Size(360.0, 640.0));
final TestViewConfiguration small = new TestViewConfiguration(size: const Size(355.0, 635.0));
final RenderView renderView = WidgetsBinding.instance.renderView;
watch.start();
while (watch.elapsed < kBenchmarkTime) {
renderView.configuration = (iterations % 2 == 0) ? big : small;
RendererBinding.instance.pipelineOwner.flushLayout();
iterations += 1;
}
watch.stop();
});
BenchmarkResultPrinter printer = new BenchmarkResultPrinter();
printer.addResult(
description: 'Stock layout',
value: watch.elapsedMicroseconds / iterations,
unit: 'µs per iteration',
name: 'stock_layout_iteration',
);
printer.printToStdout();
}