LibTest/collection/SplayTreeMap/lastKey_A01_t02.dart

/*
 * 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 K lastKey()
 * Get the last key in the map. Returns null if the map is empty.
 * @description Checks that null is returned if the map is empty
 * @author sgrekhov@unipro.ru
 */
import "dart:collection";
import "../../../Utils/expect.dart";

main() {
  SplayTreeMap map = new SplayTreeMap();
  Expect.isNull(map.lastKey());
}