// 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 final bool iterator
/// @description Checks that iterator is read-only property and cannot be changed
/// @author iarkh@unipro.ru


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

main() {
  dynamic queue = new DoubleLinkedQueue();
  Expect.throws(() { queue.iterator = null; }, (e) => e is NoSuchMethodError);
}