// 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 SplayTreeSet([int compare(E key1, E key2),
/// bool isValidKey(potentialKey)])
/// ...
/// If the compare function is omitted, it defaults to Comparable.compare, and
/// the elements must be comparable.
/// @description Checks that if the compare function is omitted, and the elements
/// are not comparable then exception is thrown
/// @author sgrekhov@unipro.ru

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

class C {}

main() {
  SplayTreeSet set = new SplayTreeSet();
  Expect.throws(() {set.add(new C());});
}