blob: 929e4d0fb55519d103e0c55165ed99612366e501 [file] [log] [blame]
// 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.
/// The returned stream 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 returned stream is indeed a multi-subscription
/// stream and it produces the same events as this.
/// @author kaigorodov
library asBroadcastStream_A01_t01;
import "dart:async";
import "../../../Utils/expect.dart";
void check<T>(Stream<T> s0, List<T> data) {
Stream<T> s1 = s0.asBroadcastStream();, s1);, s1);
void test(CreateStreamFunction create) {
check(create([]), []);
check(create([1, 2, null, []]), [1, 2, null, []]);