| /* |
| * Copyright (c) 2011, 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 bool contains(Object element) |
| * Returns true if the collection contains an element equal to element. |
| * @description Checks that the method returns true if at least one element |
| * of this collection equals to element. |
| * @author kaigorodov |
| */ |
| import "../../../Utils/expect.dart"; |
| import "dart:collection"; |
| |
| main() { |
| DoubleLinkedQueue queue = new DoubleLinkedQueue(); |
| Expect.isFalse(queue.contains(1)); |
| |
| queue.addFirst(1); |
| Expect.isFalse(queue.contains(0)); |
| Expect.isTrue(queue.contains(1)); |
| |
| queue.addFirst(1); |
| Expect.isTrue(queue.contains(1)); |
| |
| queue.addLast(2); |
| Expect.isFalse(queue.contains(0)); |
| Expect.isTrue(queue.contains(1)); |
| Expect.isTrue(queue.contains(2)); |
| } |