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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | |
2 // for details. All rights reserved. Use of this source code is governed by a | |
3 // BSD-style license that can be found in the LICENSE file. | |
4 | |
5 library queue.single.test; | |
6 | |
7 import "package:expect/expect.dart"; | |
8 import 'dart:collection' show Queue; | |
9 | |
10 main() { | |
11 Queue<int> queue1 = new Queue<int>(); | |
12 queue1.add(42); | |
13 Queue queue2 = new Queue(); | |
14 queue2..add(11)..add(12)..add(13); | |
15 Queue queue3 = new Queue(); | |
16 | |
17 Expect.equals(42, queue1.single); | |
18 Expect.throws(() => queue2.single, (e) => e is StateError); | |
19 Expect.throws(() => queue3.single, (e) => e is StateError); | |
20 } | |
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