LibTest/collection/HashSet/HashSet_A01_t01.dart

// 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 interface HashSet<E>
/// HashSet({bool equals(E e1, E e2), int hashCode(E e),
/// bool isValidKey(potentialKey) })
/// Create a hash set using the provided [equals] as equality.
/// @description Checks that default constructor without parameters creates an
/// empty hash set.
/// @author rodionov

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

main() {
  var s = new HashSet();
  Expect.isTrue(s is HashSet);
  Expect.runtimeIsType<HashSet>(s);
  Expect.isTrue(s.isEmpty);
}