Hi Greg,

Try with

.runWith(TestSink.probe[String])
.request(2)
.expectNext

You should not expect any elements until you have requested for elements.

/Patrik
​

On Sat, Oct 24, 2015 at 8:26 PM, tigerfoot <gzol...@gmail.com> wrote:

> Hello,
>
> I'm trying to run a test of a stream from RabbitMQ like this:
>
> val z = RabbitSource[String](
> rc,
> LateQueue(outQ, durable = true, exclusive = false, autoDelete = false),
> 1)
> .map( _.ack )
> .runWith(TestSink.probe[String])
> .expectSubscription()
> println(z)
>
> I want to pull things off the queue and test them against expected values.
>
> (RabbitSource here just creates a stream Source connected to Rabbit bound
> to a given queue.)
>
> Playing around with .expectNext earlier I discovered that rather than
> starting with pulling my items off the queue as I'd expected, I get a
> Subscription first.
> Ok, so I see the .expectSubscription() method in the probe API but it
> doesn't return Self.
>
> Printing the object it seems it is an internal thing:
>  akka.stream.impl.ActorSubscription@7b0044da
>
> Not sure what to do with this.  What's the best way to probe my stream
> here?  How can I pull items one at a time and check them?
>
> Thanks!
> Greg
>
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-- 

Patrik Nordwall
Typesafe <http://typesafe.com/> -  Reactive apps on the JVM
Twitter: @patriknw

-- 
>>>>>>>>>>      Read the docs: http://akka.io/docs/
>>>>>>>>>>      Check the FAQ: 
>>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html
>>>>>>>>>>      Search the archives: https://groups.google.com/group/akka-user
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