blob: 03d692d7c79370bd9cf33ae1b2caeeacd4ffa59e [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 append() appends element to this one
* @author sgrekhov@unipro.ru
*/
import "../../../Utils/expect.dart";
import "dart:collection";
main() {
DoubleLinkedQueue queue = new DoubleLinkedQueue();
queue.add(1);
queue.add(2);
queue.add(3);
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);
}