// Copyright (c) 2016, 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.

// @dart = 2.9

/// @assertion void insertBefore(E entry)
/// ...
/// This entry must be in a linked list when this method is called. The [entry]
/// must not be in a linked list.
/// @description Checks that the entry inserted must not be in any linked list
/// @author sgrekhov@unipro.ru

import "dart:collection";
import "../../../Utils/expect.dart";
import "LinkedListEntry.lib.dart";

main() {
  LinkedList<MyLinkedListEntry> list1 =
      new LinkedList<MyLinkedListEntry<int>>();
  LinkedList<MyLinkedListEntry> list2 =
      new LinkedList<MyLinkedListEntry<int>>();
  MyLinkedListEntry<int> entry1 = new MyLinkedListEntry<int>(1);
  MyLinkedListEntry<int> entry2 = new MyLinkedListEntry<int>(2);
  list1.add(entry1);
  list2.add(entry2);
  Expect.throws(() {
    entry1.insertAfter(entry2);
  });
}