| // 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. |
| /// . . . |
| /// The test call is considered failing if it returns a non-true value or if it |
| /// throws. If the test call throws, the error is emitted as the last event on |
| /// the returned streams. |
| /// |
| /// @description Checks that if [test] throws, the error is emitted as the last |
| /// event on the returned streams. |
| /// @author ngl@unipro.ru |
| |
| import "dart:io"; |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| check(bool test(e), dataExpected, errorExpected) { |
| asyncStart(); |
| var address = InternetAddress.loopbackIPv4; |
| RawDatagramSocket.bind(address, 0).then((producer) { |
| RawDatagramSocket.bind(address, 0).then((receiver) { |
| int sent = 0; |
| List list = []; |
| List errList = []; |
| producer.send([sent++], address, receiver.port); |
| producer.send([sent++], address, receiver.port); |
| producer.send([sent++], address, receiver.port); |
| producer.close(); |
| |
| Stream s = receiver.takeWhile(test); |
| s.listen((event) { |
| list.add(event); |
| receiver.receive(); |
| }, onError: (e) { |
| errList.add(e); |
| Expect.listEquals(dataExpected, list); |
| }, onDone: () { |
| Expect.listEquals(dataExpected, list); |
| Expect.listEquals(errorExpected, errList); |
| asyncEnd(); |
| }); |
| |
| 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) => throw 11, [], [11]); |
| check((e) => e == RawSocketEvent.closed ? throw 6 : true, |
| expected.sublist(0, 3), [6]); |
| check((e) => e == RawSocketEvent.read ? throw 7 : true, |
| expected.sublist(0, 1), [7]); |
| check((e) => e == RawSocketEvent.write ? throw 8 : false, [], [8]); |
| } |