| /* |
| * 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 remove(Object o) |
| * Remove a single instance of value from the queue. |
| * Returns true if a value was removed, or false if the queue contained no element equal to value. |
| * @author kaigorodov |
| */ |
| |
| import "dart:collection"; |
| import "../../../Utils/expect.dart"; |
| |
| check(List list, Object value, bool expected) { |
| DoubleLinkedQueue queue = new DoubleLinkedQueue(); |
| for (var element in list) { |
| queue.add(element); |
| } |
| var l1=list.length; |
| bool r = list.remove(value); |
| Expect.isTrue(r is bool, "remove returned: ${r.runtimeType} ${r}, not bool"); |
| if (r) { |
| Expect.isTrue(expected); |
| Expect.equals(l1-1, list.length); |
| } else { |
| Expect.isFalse(expected); |
| Expect.equals(l1, list.length); |
| } |
| } |
| |
| main() { |
| check([], 1, false); |
| check([1], 1, true); |
| check(new List.from([]), true, false); |
| List list=new List(); |
| check(list, 2, false); |
| list.add(2); |
| check(list, 2, true); |
| check(list, 2, false); |
| } |