| /* |
| * 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 final E single |
| * Returns the single element in this. |
| * @description Checks that the single element is returned. |
| * @author kaigorodov |
| */ |
| import "dart:collection"; |
| import "../../../Utils/expect.dart"; |
| import "LinkedList.lib.dart"; |
| |
| var v; |
| |
| void check(List a0) { |
| LinkedList a = toLinkedList(a0); |
| if (a.length == 1) { |
| Expect.equals(a.first, a.single); |
| } else { |
| Expect.throws(() { a.single; }, (e) => e is StateError); |
| } |
| } |
| |
| main() { |
| check([]); |
| List a = new List(); |
| check(a); |
| a.add(0); |
| check(a); |
| a.length = 25476; |
| check(a); |
| a.clear(); |
| a.length = 1; |
| check(a); |
| a = const[]; |
| check(a); |
| a = const[1]; |
| check(a); |
| } |