| // Copyright (c) 2012, 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. |
| |
| library queue.single.test; |
| import "package:expect/expect.dart"; |
| import 'dart:collection' show Queue; |
| |
| main() { |
| Queue<int> queue1 = new Queue<int>(); |
| queue1.add(42); |
| Queue queue2 = new Queue(); |
| queue2..add(11) |
| ..add(12) |
| ..add(13); |
| Queue queue3 = new Queue(); |
| |
| Expect.equals(42, queue1.single); |
| Expect.throws(() => queue2.single, (e) => e is StateError); |
| Expect.throws(() => queue3.single, (e) => e is StateError); |
| } |