| /* |
| * 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 dynamic firstWhere(bool test(E value), {Object orElse()}) |
| * Returns the first element that satisfies the given predicate [test]. |
| * @description Checks that the method returns the first element of the queue. |
| * @author kaigorodov |
| */ |
| import "dart:collection"; |
| import "../../../Utils/expect.dart"; |
| |
| check(List list, bool test(value), int expected) { |
| DoubleLinkedQueue queue = new DoubleLinkedQueue.from(list); |
| int actual = queue.firstWhere(test); |
| Expect.equals(expected, actual); |
| } |
| |
| main() { |
| check([1, 2, -3, 4], (value) => value > 1, 2); |
| check(const[1, 2, -5, -6], (value) => value < 0, -5); |
| } |