He-Pin commented on code in PR #603:
URL: https://github.com/apache/incubator-pekko/pull/603#discussion_r1311905533
##########
stream-tests/src/test/scala/org/apache/pekko/stream/scaladsl/FlowStatefulMapSpec.scala:
##########
@@ -280,4 +283,64 @@ class FlowStatefulMapSpec extends StreamSpec {
.expectComplete()
}
}
+
+ "won't call onComplete twice when downstream cancelled even if onComplete
throws" in {
+ var counter = 0
+
+ def badDtor() = {
+ counter += 1
+ throw dtorException
+ }
+
+ Source.never[String]
+ .statefulMap(() => None)((s, e) => s -> e,
+ _ => {
+ badDtor()
+ None
+ })
+ .runWith(Sink.cancelled)
+
+ StreamTestKit.assertAllStagesStopped(None)
+ counter shouldBe 1
+ }
+
+ "won't call onComplete twice when upstream failed even if onComplete throws"
in {
+ var counter = 0
+
+ def badDtor() = {
+ counter += 1
+ throw dtorException
+ }
+
+ Source.failed[String](ex)
+ .statefulMap(() => None)((s, e) => s -> e,
+ _ => {
+ badDtor()
+ None
+ })
+ .runWith(Sink.ignore)
+
+ StreamTestKit.assertAllStagesStopped(None)
+ counter shouldBe 1
+ }
+
+ "won't call onComplete twice when upstream finished even if onComplete
throws" in {
Review Comment:
`in assertAllStagesStopped {` or jsut remove it.
##########
stream-tests/src/test/scala/org/apache/pekko/stream/scaladsl/FlowStatefulMapSpec.scala:
##########
@@ -35,6 +36,8 @@ class FlowStatefulMapSpec extends StreamSpec {
val ex = new Exception("TEST") with NoStackTrace
+ val dtorException = new Exception("bad dtor") with NoStackTrace
Review Comment:
dtor means `destructor`?
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