blob: c7875ffa5b2933bc50c6a4388d7e32f560286c94 [file] [log] [blame]
// 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 remove() → E
/// @description Checks that remove() removes element
/// @author
import "../../../Utils/expect.dart";
import "dart:collection";
main() {
DoubleLinkedQueue queue = new DoubleLinkedQueue();
var e = queue.firstEntry()?.nextEntry()?.remove();
Expect.equals(2, e);
Expect.equals(2, queue.length);
Expect.equals(1, queue.first);
Expect.equals(3, queue.firstEntry()?.nextEntry()?.element);
Expect.equals(1, queue.lastEntry()?.previousEntry()?.element);