// 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 Map<K, V> abstract class
/// An unordered collection of key-value pairs, from which you retrieve a value
/// by using its associated key.
/// Each key must be unique.
/// @description Checks that null keys are supported.
/// @author kaigorodov

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

main() {
  Map<String?, Object> map = new Map<String?, Object>();
  map[null] = "123";
  Expect.equals("123", map[null]);
}