| // Copyright (c) 2016, 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. |
| |
| // @dart = 2.9 |
| |
| /// @assertion element → E |
| /// read / write |
| /// The element in the queue. |
| /// @description Checks that element property is read/write |
| /// @author sgrekhov@unipro.ru |
| |
| import "../../../Utils/expect.dart"; |
| import "dart:collection"; |
| |
| main() { |
| double d = 3.14; |
| DoubleLinkedQueueEntry entry = new DoubleLinkedQueueEntry(d); |
| Expect.equals(d, entry.element); |
| |
| int i = -1; |
| entry.element = i; |
| Expect.equals(i, entry.element); |
| |
| entry.element = null; |
| Expect.isNull(entry.element); |
| } |