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// 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 msyabro
library addFirst_A01_t01;
import "../../../Utils/expect.dart";
import "dart:collection";
test(Queue create([Iterable content])) {
Queue queue = create();
Expect.isTrue(queue.first == 1);
Expect.isTrue(queue.first == null);
Expect.identical(queue.first, queue);
queue = create();
for (var i = 0; i <= 1000; i++) {
Expect.equals(i, queue.first);
Expect.equals(i + 1, queue.length);