| // 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}) |
| /// A controller where stream can be listened to more than once. |
| /// |
| /// The Stream returned by stream is a broadcast stream. It can be listened to |
| /// more than once. |
| /// |
| /// The controller distributes any events to all currently subscribed listeners |
| /// at the time when add, addError or close is called. |
| /// |
| /// @description Checks that the controller distributes all data and error |
| /// events to all currently subscribed listeners. |
| /// @author a.semenov@unipro.ru |
| |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| check(List events) { |
| StreamController controller = new StreamController.broadcast(); |
| Stream s = controller.stream; |
| List expectedData = events.where((e) => !(e is num) || e >= 0).toList(); |
| List expectedErrors = events.where((e) => e is num && e < 0).toList(); |
| |
| asyncMultiStart(2); |
| |
| List events1 = [], errors1 = []; |
| s.listen( |
| (event) => events1.add(event), |
| onError: (error) => errors1.add(error), |
| onDone: () { |
| Expect.listEquals(expectedData, events1); |
| Expect.listEquals(expectedErrors, errors1); |
| asyncEnd(); |
| } |
| ); |
| |
| |
| List events2 = [], errors2 = []; |
| s.listen( |
| (event) => events2.add(event), |
| onError: (error) => errors2.add(error), |
| onDone: () { |
| Expect.listEquals(expectedData, events2); |
| Expect.listEquals(expectedErrors, errors2); |
| asyncEnd(); |
| } |
| ); |
| |
| for (var event in events) { |
| if (event is num && event < 0) { |
| controller.addError(event); |
| } else { |
| controller.add(event); |
| } |
| } |
| controller.close(); |
| } |
| |
| main() { |
| check([]); |
| check([1, 2, null, []]); |
| check([1, 2, -1, "aaa", -3, 10]); |
| check([-1, -2, -1, -3, -10]); |
| check([-1, 1, -2, 2, "hello", "world", -10]); |
| } |