// 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
/// HashMap.fromIterable(Iterable iterable, {K key(element), V value(element)})
/// Creates a HashMap where the keys and values are computed from the [iterable].
/// @description Checks that created hash map contains all elements of the
/// [iteratable]
/// @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);
  queue.add(null);

  HashMap map = new HashMap.fromIterable(queue);
  Expect.equals(queue.length, map.length);
  queue.forEach((el) {
    Expect.equals(el, map[el]);
  });
}