| // 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> skipWhile(bool test(T element)) |
| /// Skip data events from this stream while they are matched by test. |
| /// . . . |
| /// The test fails when called with a data event if it returns a non-true value |
| /// or if the call to test throws. If the call throws, the error is emitted as an |
| /// error event on the returned stream instead of the data event, otherwise the |
| /// event that made test return non-true is emitted as the first data event. |
| /// |
| /// Error and done events are provided by the returned stream unmodified. |
| /// |
| /// @description Checks that if this stream is closed, the done event is provided |
| /// by the return stream unmodified. |
| /// @author ngl@unipro.ru |
| |
| import "dart:io"; |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| check(test(e), expected, int count) { |
| asyncStart(); |
| var address = InternetAddress.loopbackIPv4; |
| RawDatagramSocket.bind(address, 0).then((producer) { |
| RawDatagramSocket.bind(address, 0).then((receiver) { |
| int sent = 0; |
| int counter = 0; |
| List list = []; |
| producer.send([sent++], address, receiver.port); |
| 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.skipWhile((e) => test(e)); |
| s.listen((event) { |
| list.add(event); |
| }, onDone: () { |
| Expect.listEquals(expected, list); |
| asyncEnd(); |
| }); |
| |
| bcs.listen((event) { |
| receiver.receive(); |
| counter++; |
| if (counter == count) { |
| receiver.close(); |
| } |
| }).onDone(() { |
| Expect.equals(count + 1, counter); |
| }); |
| |
| new Timer(const Duration(milliseconds: 200), () { |
| Expect.isNull(receiver.receive()); |
| receiver.close(); |
| }); |
| }); |
| }); |
| } |
| |
| main() { |
| List expected = [ |
| RawSocketEvent.write, |
| RawSocketEvent.read, |
| RawSocketEvent.read, |
| RawSocketEvent.read, |
| RawSocketEvent.closed |
| ]; |
| for (int i = 1; i < 4; i++) { |
| check((e) => e != RawSocketEvent.closed, [RawSocketEvent.closed], i); |
| List l = expected.sublist(5 - i); |
| l.insert(0, RawSocketEvent.write); |
| check((e) => e == RawSocketEvent.closed, l, i); |
| check((e) => e == RawSocketEvent.write, expected.sublist(5 - i), i); |
| } |
| check((e) => e != RawSocketEvent.read, [], 1); |
| } |