// 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.

// @dart = 2.9

/// @assertion void addAll(Iterable<E> iterable)
/// Adds all elements of [collection] at the end of the queue.
/// The length of the queue is extended by the length of [iterable].
/// @description Checks that method appends new elements and does not affect 
/// the existing elements of the queue.
/// @author kaigorodov

import "../../../Utils/expect.dart";
import "dart:collection";

check(List expected, DoubleLinkedQueue actual) {
  Expect.equals(expected.length, actual.length);
  int i = 0;
  actual.forEach((var element) {
    Expect.equals(expected[i++], element);
  });
}
 
main() {
  DoubleLinkedQueue queue = new DoubleLinkedQueue();
  Expect.isTrue(queue.length == 0);
  queue.addAll(["1", "2", "3"]);
  check(["1", "2", "3"], queue);

  queue.addAll([null,0, false, "0"]);
  check(["1", "2", "3", null, 0, false, "0"], queue);
}