| /* |
| * 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 Stream<T> asBroadcastStream ({void onListen(StreamSubscription<T> |
| * subscription), void onCancel(StreamSubscription<T> subscription)}) |
| * Returns a multi-subscription stream that produces the same events as this. |
| * If this stream is single-subscription, return a new stream that allows multiple subscribers. |
| * It will subscribe to this stream when its first subscriber is added, |
| * and will stay subscribed until this stream ends, or a callback cancels the subscription. |
| * @description Checks that if this stream is single-subscription, |
| * returned stream is indeed a broadcast stream. |
| * @author kaigorodov |
| */ |
| |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| Stream s1=new Stream.fromIterable([]); |
| Stream s2=s1.asBroadcastStream(); |
| Stream s3=s2.asBroadcastStream(); |
| |
| Expect.isFalse(s1.isBroadcast); |
| Expect.isTrue(s2.isBroadcast); |
| Expect.isTrue(s3.isBroadcast); |
| } |
| |