| // Copyright (c) 2017, 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. |
| |
| /// @assertion Future<RawSocketEvent> first |
| /// The first element of the stream. |
| /// . . . |
| /// Except for the type of the error, this method is equivalent to |
| /// this.elementAt(0). |
| /// |
| /// @description Checks that getting first is equivalent to this.elementAt(0). |
| /// @author ngl@unipro.ru |
| |
| import "dart:async"; |
| import "dart:io"; |
| import "../../../Utils/expect.dart"; |
| |
| |
| import "dart:async"; |
| import "dart:io"; |
| import "../http_utils.dart"; |
| import "../../../Utils/expect.dart"; |
| |
| var localhost = InternetAddress.loopbackIPv4; |
| |
| Future<List> checkFind(bool removeReceiver) async { |
| RawDatagramSocket producer = await RawDatagramSocket.bind(localhost, 0); |
| RawDatagramSocket receiver = await RawDatagramSocket.bind(localhost, 0); |
| List<List<int>> toSend = [[0, 1, 2, 3], [1, 2, 3], [2, 3]]; |
| Completer<List> completer = new Completer<List>(); |
| Future<List> f = completer.future; |
| Duration delay = const Duration(seconds: 2); |
| List received = []; |
| |
| bool wasSent = await sendDatagram(producer, toSend, localhost, receiver.port); |
| Expect.isTrue(wasSent, "No datagram was sent"); |
| if (removeReceiver) { |
| receiver.close(); |
| } |
| |
| var bcs = receiver.asBroadcastStream(); |
| |
| Future.wait( |
| [bcs.elementAt(0), bcs.first] |
| ).then((List result) { |
| received.add(result[0]); |
| received.add(result[1]); |
| receiver.close(); |
| if (!completer.isCompleted) { |
| completer.complete(received); |
| } |
| return f; |
| }); |
| |
| new Future.delayed(delay, () { |
| if (!completer.isCompleted) { |
| receiver.close(); |
| } |
| }); |
| |
| return f; |
| } |
| |
| main() async { |
| int attempts = 5; |
| |
| toCheck(bool removeReceiver) async { |
| for (int i = 0; i < attempts; i++) { |
| List list = await checkFind(removeReceiver); |
| int recLength = list.length; |
| if (recLength == 2 && list[0] == list[1]) { |
| break; |
| } |
| |
| if (i == attempts - 1) { |
| print('first not equal to this.elementAt(0). Look like test failed.'); |
| } |
| } |
| } |
| |
| await toCheck(false); |
| await toCheck(true); |
| } |