| /* |
| * 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 |
| * Future<RawSocketEvent> singleWhere ( |
| * bool test(T element), { |
| * T orElse() |
| * }) |
| * Finds the single element in this stream matching test. |
| * |
| * Like lastWhere, except that it is an error if more than one matching element |
| * occurs in the stream. |
| * |
| * @description Checks that method [singleWhere] returns Future that is |
| * completed with (1) the event of this stream, if this event is single event |
| * that matches the test, or (2) an error otherwise. |
| * @author ngl@unipro.ru |
| */ |
| import "dart:io"; |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| check(event, valueExpected, errorExpected) { |
| asyncStart(); |
| var address = InternetAddress.loopbackIPv4; |
| RawDatagramSocket.bind(address, 0).then((producer) { |
| RawDatagramSocket.bind(address, 0).then((receiver) { |
| int sent = 0; |
| producer.send([sent++], address, receiver.port); |
| producer.send([sent++], address, receiver.port); |
| producer.send([sent], address, receiver.port); |
| producer.close(); |
| receiver.close(); |
| |
| Future fValue = receiver.singleWhere((e) => e == event); |
| fValue.then((value) { |
| if (valueExpected) { |
| Expect.equals(event, value); |
| } else { |
| Expect.fail('Future should be completed with error'); |
| } |
| }).catchError((error) { |
| if (errorExpected) { |
| Expect.isTrue((error is StateError)); |
| } else { |
| Expect.fail('Future should be completed with event'); |
| } |
| }).whenComplete(() { |
| asyncEnd(); |
| }); |
| }); |
| }); |
| } |
| |
| main() { |
| check(RawSocketEvent.closed, true, false); |
| check(RawSocketEvent.write, false, true); |
| check(RawSocketEvent.read, false, true); |
| } |