// 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 SplayTreeSet([int compare(E key1, E key2),
/// bool isValidKey(potentialKey)])
/// A Set of objects that can be ordered relative to each other.
/// @description Checks that objects in SplayTreeSet are ordered relative to each
/// other
/// @author sgrekhov@unipro.ru

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

main() {
  SplayTreeSet set = new SplayTreeSet();
  set.add(3);
  set.add(4);
  set.add(1);
  set.add(2);

  Expect.equals(1, set.elementAt(0));
  Expect.equals(2, set.elementAt(1));
  Expect.equals(3, set.elementAt(2));
  Expect.equals(4, set.elementAt(3));
}