| /* |
| * 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 E singleWhere(bool test(E value)) |
| * If no or more than one element match then a StateError is thrown. |
| * @description Checks that a StateError is thrown if no element match. |
| * @author kaigorodov |
| */ |
| import "dart:collection"; |
| import "../../../Utils/expect.dart"; |
| import "LinkedList.lib.dart"; |
| |
| check(List a0, test(value)) { |
| LinkedList a=toLinkedList(a0); |
| bool test2(MyLinkedListEntry<int> value) => |
| test(value.value); |
| Expect.throws(() { |
| a.singleWhere(test2); |
| }, |
| (e) => e is StateError |
| ); |
| } |
| |
| main() { |
| check([1,2,-3,4], (value)=>value==0); |
| check(const[1,2,-5,-6], (value)=>value>2); |
| } |