| // 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> last |
| /// The last element of this stream. |
| /// |
| /// If an error event occurs before the first data event, the resulting future |
| /// is completed with that error. |
| /// |
| /// If this stream is empty (a done event occurs before the first data event), |
| /// the resulting future completes with a StateError. |
| /// |
| /// @description Checks that property last returns the last element of the |
| /// stream when all sent events were received and RawDatagramSocket was closed. |
| /// @author ngl@unipro.ru |
| |
| import "dart:async"; |
| import "dart:io"; |
| import "../../../Utils/expect.dart"; |
| |
| check([bool no_write_events = false]) { |
| asyncStart(); |
| var address = InternetAddress.loopbackIPv4; |
| RawDatagramSocket.bind(address, 0).then((producer) { |
| RawDatagramSocket.bind(address, 0).then((receiver) { |
| if (no_write_events) { |
| receiver.writeEventsEnabled = false; |
| } |
| int sent = 0; |
| var rEvent; |
| int counter = 0; |
| |
| Stream stream = receiver.asBroadcastStream(); |
| producer.send([sent++], address, receiver.port); |
| producer.send([sent++], address, receiver.port); |
| producer.send([sent], address, receiver.port); |
| producer.close(); |
| |
| stream.last.then((event) { |
| rEvent = event; |
| }).whenComplete (() { |
| Expect.equals(RawSocketEvent.closed, rEvent); |
| Expect.equals(4, counter); |
| asyncEnd(); |
| }); |
| |
| stream.listen((e) { |
| counter++; |
| receiver.receive(); |
| }); |
| |
| new Timer(const Duration(milliseconds: 200), () { |
| Expect.isNull(receiver.receive()); |
| receiver.close(); |
| }); |
| }); |
| }); |
| } |
| |
| main() { |
| check(); |
| check(true); |
| } |