Hi guys,
Given the following flow --
val flow = Flow() { implicit b =>
import FlowGraph.Implicits._
val welcome = Source.single("welcome")
val echo = b.add(Flow[String])
val concat = b.add(Concat[String]())
welcome ~> concat.in(0)
echo.outlet ~> concat.in(1)
(echo.inlet, concat.out)
}
Is this expected *not* to work?
Source.empty
.via(flow)
.runWith(TestSink.probe())
.request(1)
.expectNext("welcome")
.expectComplete()
However, changing the request size to '2' works ok:
Source.empty
.via(flow)
.runWith(TestSink.probe())
.request(2)
.expectNext("welcome")
.expectComplete()
I'm guessing this is since concat doesn't eagerly pull the next element
from the second stream on the concat?
--
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