| // 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.broadcast({void onListen(), void onCancel(), |
| /// bool sync: false}) |
| /// Each listener subscription is handled independently, and if one pauses, |
| /// only the pausing listener is affected. A paused listener will buffer events |
| /// internally until unpaused or canceled. |
| /// |
| /// @description Checks that if a listener is paused, only that listener is |
| /// affected. |
| /// Checks that paused listener will buffer events internally. |
| |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| StreamController controller = new StreamController.broadcast(); |
| Stream stream = controller.stream; |
| |
| bool event1seen = false; |
| StreamSubscription sub1 = stream.listen((event) {event1seen = true;}); |
| sub1.pause(); |
| bool event2seen = false; |
| StreamSubscription sub2 = stream.listen((event) {event2seen = true;}); |
| |
| controller.add(1); |
| |
| runLater(() { |
| Expect.isFalse(event1seen); |
| Expect.isTrue(event2seen); |
| sub1.resume(); |
| runLater(() { |
| Expect.isTrue(event1seen); |
| controller.close(); |
| }); |
| }); |
| } |