blob: e37206d38d49795c1141980d12fcc2c592b6162c [file] [log] [blame]
// 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 addFirst(E value)
/// Adds [value] at the beginning of the queue.
/// @description Checks that [value] is added to the beginning of the queue.
/// @author kaigorodov
import "../../../Utils/expect.dart";
import "dart:collection";
main() {
DoubleLinkedQueue queue = new DoubleLinkedQueue();
Expect.isTrue(queue.first == 1);
Expect.isTrue(queue.first == null);
Expect.identical(queue.first, queue);
queue = new DoubleLinkedQueue();
for (var i = 0; i <= 1000; i++) {
Expect.equals(i, queue.first);
Expect.equals(i + 1, queue.length);