| // Copyright (c) 2021, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| import 'dart:io'; |
| import 'dart:math'; |
| |
| import 'package:dds/dds.dart'; |
| import 'package:test/test.dart'; |
| import 'package:vm_service/vm_service.dart'; |
| import 'package:vm_service/vm_service_io.dart'; |
| |
| import 'common/test_helper.dart'; |
| |
| void main() { |
| late Process process; |
| late DartDevelopmentService dds; |
| |
| setUp(() async { |
| // We don't care what's actually running in the target process for this |
| // test, so we're just using an existing one. |
| process = await spawnDartProcess( |
| 'get_stream_history_script.dart', |
| pauseOnStart: false, |
| ); |
| }); |
| |
| tearDown(() async { |
| await dds.shutdown(); |
| process.kill(); |
| }); |
| |
| Future<void> streamSubscribeUnsubscribe( |
| VmService client, { |
| required bool delay, |
| }) async { |
| await client.streamListen('Service'); |
| await Future.delayed( |
| Duration(milliseconds: delay ? Random().nextInt(200) : 0), |
| ); |
| await client.streamCancel('Service'); |
| } |
| |
| test('Ensure streamListen and streamCancel calls are handled atomically', |
| () async { |
| for (int i = 0; i < 100; ++i) { |
| dds = await DartDevelopmentService.startDartDevelopmentService( |
| remoteVmServiceUri, |
| ); |
| expect(dds.isRunning, true); |
| final connection1 = await vmServiceConnectUri(dds.wsUri.toString()); |
| final connection2 = await vmServiceConnectUri(dds.wsUri.toString()); |
| |
| await Future.wait([ |
| streamSubscribeUnsubscribe(connection1, delay: true), |
| streamSubscribeUnsubscribe(connection2, delay: false), |
| ]); |
| await dds.shutdown(); |
| } |
| }); |
| } |