LibTest/collection/LinkedList/forEach_A02_t01.dart

// 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 void forEach(void action(E entry))
/// It's an error if [action[ modify the linked list.
/// @description Checks that it's an error if [action] modifies the list.
/// @author kaigorodov

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

LinkedList<MyLinkedListEntry> list = toLinkedList([1, 2]);

main() {
  Expect.throws(() => list.forEach(
    (MyLinkedListEntry entry) {
      list.remove(entry);
    }
  ));

  Expect.throws(() => list.forEach(
    (MyLinkedListEntry entry) {
      entry.unlink();
    }
  ));
}