// 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.

// @dart = 2.9

/// @assertion E elementAt(int index)
/// Index zero represents the first element (so [iterable.elementAt(0)] is
/// equivalent to [iterable.first]).
/// @description Checks that [iterable.elementAt(0)] is equivalent to
/// [iterable.first]
/// @author iarkh@unipro.ru

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

class MyIterable extends Object with IterableMixin {
  List _content;
  MyIterable(List list): _content = list;

  Iterator get iterator {
    return _content.iterator;
  }
}

main() {
  MyIterable iterable = new MyIterable([1, 2, 3, 4, 5, 6, 7, 8, 9]);
  Expect.equals(iterable.first, iterable.elementAt(0));
}