mdedetrich commented on code in PR #1207:
URL: https://github.com/apache/incubator-pekko/pull/1207#discussion_r1529929645
##########
stream-tests/src/test/scala/org/apache/pekko/stream/scaladsl/FlowSplitAfterSpec.scala:
##########
@@ -250,10 +248,10 @@ class FlowSplitAfterSpec extends StreamSpec("""
upstreamSubscription.sendNext(6)
substreamPuppet1.expectNext(6)
substreamPuppet1.expectComplete()
+ upstreamSubscription.sendNext(7)
Review Comment:
> **1. `val substream2 = subscriber.expectNext()`, the `subscriber` is not
expecting a `complete`, otherwise, the call `sendNext(7)` will cause issue
because the origin source is already completed.
>
> The problem here is when the `stream2` be generated, I expected the
behavior the same, just after the `6 % 3 == 0`, wdyt @samueleresca @mdedetrich**
I am not saying that this is wrong, just that its a completely separate
issue from what this PR is changing/solving. Or to put it differently, this
behaviour is the same as current Pekko since at this point i.e.
```scala
upstreamSubscription.sendNext(6)
substreamPuppet1.expectNext(6)
substreamPuppet1.expectComplete()
upstreamSubscription.sendNext(7)
val substream2 = subscriber.expectNext()
val substreamPuppet2 =
StreamPuppet(substream2.runWith(Sink.asPublisher(false)))
substreamPuppet2.request(10)
substreamPuppet2.expectNext(7)
upstreamSubscription.sendComplete()
subscriber.expectComplete()
substreamPuppet2.expectComplete()
```
we are past recovering from an exception. The critical part of the test
specifically dealing with recovering from exception and resuming is
```scala
upstreamSubscription.sendNext(3)
upstreamSubscription.sendNext(4)
substreamPuppet1.expectNext(4) // note that 3 was dropped
```
And this part is completely unchanged from how the test was originally
written.
Given that, I think it makes sense to file a separate issue if this
behaviour about completing after a split needs to change and hence to tackle it
separately
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