| // 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 StreamController({void onListen(), void onPause(), |
| /// void onResume(), dynamic onCancel(), bool sync: false}) |
| /// If sync is true, the returned stream controller is a |
| /// SynchronousStreamController, and must be used with the care and attention |
| /// necessary to not break the Stream contract. See Completer.sync for some |
| /// explanations on when a synchronous dispatching can be used. If in doubt, |
| /// keep the controller non-sync. |
| /// |
| /// @description Checks that if sync is false, the event will be passed to the |
| /// listener at a later time, after the code creating the event has returned. |
| /// @author kaigorodov |
| |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| StreamController controller = new StreamController(sync: false); |
| Stream s = controller.stream; |
| bool onDataCalled = false; |
| asyncStart(); |
| s.listen((var event) { |
| onDataCalled = true; |
| asyncEnd(); |
| } |
| ); |
| controller.add(1); |
| Expect.isFalse(onDataCalled); |
| controller.close(); |
| } |