public async Task ChannelSource_must_read_incoming_events()
{
var tcs = new CancellationTokenSource(TimeSpan.FromSeconds(5));
var channel = Channel.CreateBounded <int>(3);
await channel.Writer.WriteAsync(1, tcs.Token);
await channel.Writer.WriteAsync(2, tcs.Token);
await channel.Writer.WriteAsync(3, tcs.Token);
var probe = this.CreateManualSubscriberProbe <int>();
ChannelSource.FromReader <int>(channel)
.To(Sink.FromSubscriber(probe))
.Run(_materializer);
var subscription = probe.ExpectSubscription();
subscription.Request(5);
probe.ExpectNext(1);
probe.ExpectNext(2);
await channel.Writer.WriteAsync(4, tcs.Token);
await channel.Writer.WriteAsync(5, tcs.Token);
probe.ExpectNext(3);
probe.ExpectNext(4);
probe.ExpectNext(5);
}
public void ChannelSource_must_complete_after_channel_completes()
{
var channel = Channel.CreateUnbounded <int>();
var probe = this.CreateManualSubscriberProbe <int>();
ChannelSource.FromReader <int>(channel)
.To(Sink.FromSubscriber(probe))
.Run(_materializer);
var subscription = probe.ExpectSubscription();
subscription.Request(2);
channel.Writer.Complete();
probe.ExpectComplete();
}
public void ChannelSource_must_complete_after_channel_fails()
{
var channel = Channel.CreateUnbounded <int>();
var probe = this.CreateManualSubscriberProbe <int>();
var failure = new Exception("BOOM!");
ChannelSource.FromReader <int>(channel)
.To(Sink.FromSubscriber(probe))
.Run(_materializer);
var subscription = probe.ExpectSubscription();
subscription.Request(2);
channel.Writer.Complete(failure);
probe.ExpectError().InnerException.Should().Be(failure);
}