| // 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}) |
| /// The onPause function is called when the stream becomes paused. |
| /// |
| /// @description Checks that the onPause function is called when the stream |
| /// becomes paused. |
| /// @author kaigorodov |
| |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| bool onPauseCalled = false; |
| StreamController controller = new StreamController(onPause: () { |
| onPauseCalled = true; |
| }); |
| |
| StreamSubscription subs = controller.stream.listen((event) {}); |
| controller.add(1); |
| Expect.isFalse(onPauseCalled); |
| |
| subs.pause(); |
| Expect.isTrue(onPauseCalled); |
| } |