1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter_test/flutter_test.dart';
import '../common.dart';
import './apps/button_matrix_app.dart' as button_matrix;
const int _kNumWarmUpIters = 20;
const int _kNumIters = 300;
Future<void> main() async {
assert(false, "Don't run benchmarks in checked mode! Use 'flutter run --release'.");
final Stopwatch watch = Stopwatch();
print('GestureDetector semantics benchmark...');
await benchmarkWidgets((WidgetTester tester) async {
button_matrix.main();
await tester.pump();
await tester.pump(const Duration(seconds: 1));
Future<void> iter() async {
// Press a button to update the screen
await tester.tapAt(const Offset(760.0, 30.0));
await tester.pump();
}
// Warm up runs get the app into steady state, making benchmark
// results more credible
for (int i = 0; i < _kNumWarmUpIters; i += 1) {
await iter();
}
await tester.pumpAndSettle();
watch.start();
for (int i = 0; i < _kNumIters; i += 1) {
await iter();
}
watch.stop();
}, semanticsEnabled: true);
final BenchmarkResultPrinter printer = BenchmarkResultPrinter();
printer.addResult(
description: 'GestureDetector',
value: watch.elapsedMicroseconds / _kNumIters,
unit: 'µs per iteration',
name: 'gesture_detector_bench',
);
printer.printToStdout();
}