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Merge pull request #30321 from johanandren/wip-28689-lazysourcespec-fail

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fix: Race condition in LazySourceSpec
This commit is contained in:
Patrik Nordwall 2021-08-18 12:36:09 +02:00 • committed by GitHub
commit 7058c9b522
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1 changed files with 15 additions and 6 deletions
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21
akka-stream-tests/src/test/scala/akka/stream/scaladsl/LazySourceSpec.scala
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@ -75,13 +75,16 @@ class LazySourceSpec extends StreamSpec with DefaultTimeout with ScalaFutures {
"never construct the source when there was no demand" in assertAllStagesStopped {
val constructed = new AtomicBoolean(false)
Source
.lazySingle { () =>
val termination = Source
.lazyFuture { () =>
constructed.set(true)
1
Future.successful(1)
}
.runWith(Sink.cancelled)
.watchTermination()(Keep.right)
.toMat(Sink.cancelled)(Keep.left)
.run()
termination.futureValue // stream should terminate
constructed.get() should ===(false)
}
@ -124,14 +127,17 @@ class LazySourceSpec extends StreamSpec with DefaultTimeout with ScalaFutures {
"never construct the source when there was no demand" in assertAllStagesStopped {
val constructed = new AtomicBoolean(false)
Source
val (lazySourceMatVal, termination) = Source
.lazySource { () =>
constructed.set(true); Source(List(1, 2, 3))
}
.watchTermination()(Keep.both)
.toMat(Sink.cancelled)(Keep.left)
.run()
termination.futureValue // stream should terminate
constructed.get() should ===(false)
lazySourceMatVal.failed.futureValue shouldBe a[NeverMaterializedException]
}
"fail the materialized value when downstream cancels without ever consuming any element" in assertAllStagesStopped {
@ -270,17 +276,20 @@ class LazySourceSpec extends StreamSpec with DefaultTimeout with ScalaFutures {
"never construct the source when there was no demand" in assertAllStagesStopped {
val constructed = new AtomicBoolean(false)
Source
val (lazyFutureSourceMatval, termination) = Source
.lazyFutureSource { () =>
Future {
constructed.set(true)
Source(List(1, 2, 3))
};
}
.watchTermination()(Keep.both)
.toMat(Sink.cancelled)(Keep.left)
.run()
termination.futureValue // stream should terminate
constructed.get() should ===(false)
lazyFutureSourceMatval.failed.futureValue shouldBe a[NeverMaterializedException]
}
"fail the materialized value when downstream cancels without ever consuming any element" in assertAllStagesStopped {