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// 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.
/// @assertion final bool isNotEmpty
/// Returns true if there is at least one element in this collection.
/// @description Checks that isNotEmpty is read-only property and cannot be
/// changed.
/// @author
import "../../../Utils/expect.dart";
import "dart:collection";
main() {
dynamic queue = new DoubleLinkedQueue();
Expect.throws(() { queue.isNotEmpty = 1; }, (e) => e is NoSuchMethodError);