| // Copyright (c) 2018, 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 Stream<RawSocketEvent> takeWhile(bool test(T element)) |
| /// Forwards data events while test is successful. |
| /// . . . |
| /// For a broadcast stream, the events are only tested from the time the returned |
| /// stream is listened to. |
| /// |
| /// @description Checks that for a broadcast stream, the events are only tested |
| /// from the time this stream is listened to. |
| /// @author ngl@unipro.ru |
| |
| import "dart:io"; |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| check(bool test(e), dataExpected) { |
| asyncStart(); |
| var address = InternetAddress.loopbackIPv4; |
| RawDatagramSocket.bind(address, 0).then((producer) { |
| RawDatagramSocket.bind(address, 0).then((receiver) { |
| int sent = 0; |
| int counter = 0; |
| producer.send([sent++], address, receiver.port); |
| producer.send([sent++], address, receiver.port); |
| producer.send([sent++], address, receiver.port); |
| producer.close(); |
| |
| Stream bcs = receiver.asBroadcastStream(); |
| Stream s = bcs.takeWhile(test); |
| s.toList().then((rList) { |
| Expect.listEquals(dataExpected, rList); |
| asyncEnd(); |
| }); |
| |
| bcs.listen((event) { |
| receiver.receive(); |
| counter++; |
| }).onDone(() { |
| Expect.equals(4, counter); |
| }); |
| |
| new Timer(const Duration(milliseconds: 200), () { |
| Expect.isNull(receiver.receive()); |
| receiver.close(); |
| }); |
| }); |
| }); |
| } |
| |
| main() { |
| List expected = [ |
| RawSocketEvent.write, |
| RawSocketEvent.read, |
| RawSocketEvent.read, |
| RawSocketEvent.closed |
| ]; |
| check((e) => e == RawSocketEvent.write || e == RawSocketEvent.read, |
| expected.sublist(0, 3)); |
| check((e) => e != RawSocketEvent.read, expected.sublist(0, 1)); |
| check((e) => e == RawSocketEvent.read, []); |
| check((e) => e is RawSocketEvent, expected); |
| } |