| // Copyright (c) 2017, 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 abstract class LinkedListEntry<E extends LinkedListEntry> |
| /// An object that can be an element in a [LinkedList]. |
| /// All elements of a [LinkedList] must extend this class. |
| /// @description Checks that only [LinkedListEntry] can be an instance of |
| /// [LinkedList] |
| /// @author iarkh@unipro.ru |
| |
| import "../../../Utils/expect.dart"; |
| import "dart:collection"; |
| import "LinkedListEntry.lib.dart"; |
| |
| main() { |
| MyLinkedListEntry entry = new MyLinkedListEntry(1); |
| LinkedList<MyLinkedListEntry> list = new LinkedList<MyLinkedListEntry>(); |
| list.add(entry); |
| Expect.throws(() { list.add(1 as dynamic); }); |
| } |