// 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.

// @dart = 2.9

/// @assertion StreamController.broadcast({void onListen(), void onCancel(),
///                                       bool sync: false})
/// The controller does not have any internal queue of events, and if there
/// are no listeners at the time the event is added, it will just be dropped,
/// or, if it is an error, be reported as uncaught.
///
/// @description Checks that errors are reported as uncaught if there are no
/// listeners.
/// @issue 29403
/// @author a.semenov@unipro.ru

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

main() {
  StreamController controller = new StreamController.broadcast();
  Expect.throws(() => controller.addError("lost event"));
  controller.close();
}