blob: f74d5aef701c5c6093b768df9aa2dda0bf6ce75c [file] [log] [blame]
// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/// Measure application memory usage after pausing and resuming the app
/// with the Android back button.
import 'dart:async';
import 'package:flutter_devicelab/framework/adb.dart';
import 'package:flutter_devicelab/framework/framework.dart';
import 'package:flutter_devicelab/framework/utils.dart';
import 'package:flutter_devicelab/tasks/perf_tests.dart';
const String packageName = 'io.flutter.demo.gallery';
const String activityName = 'io.flutter.demo.gallery.MainActivity';
class BackButtonMemoryTest extends MemoryTest {
BackButtonMemoryTest() : super('${flutterDirectory.path}/examples/flutter_gallery', 'test_memory/back_button.dart', packageName);
@override
AndroidDevice get device => super.device;
/// Perform a series of back button suspend and resume cycles.
@override
Future<void> useMemory() async {
await launchApp();
await recordStart();
for (int iteration = 0; iteration < 10; iteration += 1) {
print('back/forward iteration $iteration');
// Push back button, wait for it to be seen by the Flutter app.
prepareForNextMessage('AppLifecycleState.paused');
await device.shellExec('input', <String>['keyevent', 'KEYCODE_BACK']);
await receivedNextMessage;
// Give Android time to settle (e.g. run GCs) after closing the app.
await Future<void>.delayed(const Duration(milliseconds: 100));
// Relaunch the app, wait for it to launch.
prepareForNextMessage('READY');
final String output = await device.shellEval('am', <String>['start', '-n', '$packageName/$activityName']);
print('adb shell am start: $output');
if (output.contains('Error'))
fail('unable to launch activity');
await receivedNextMessage;
// Wait for the Flutter app to settle (e.g. run GCs).
await Future<void>.delayed(const Duration(milliseconds: 100));
}
await recordEnd();
}
}
Future<void> main() async {
deviceOperatingSystem = DeviceOperatingSystem.android;
await task(BackButtonMemoryTest().run);
}