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test: make InputStreamSource TCK publisher finite #2999

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test: make InputStreamSource TCK publisher finite #2999

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21 changes: 12 additions & 9 deletions stream-tests-tck/src/test/scala/org/apache/pekko/stream/tck/InputStreamSourceTest.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -25,17 +25,20 @@ import org.reactivestreams.Publisher
class InputStreamSourceTest extends PekkoPublisherVerification[ByteString] {

def createPublisher(elements: Long): Publisher[ByteString] = {
def inputStream = new InputStream {
private var remaining = elements
override def read(): Int = {
if (remaining > 0) {
remaining -= 1
1
} else -1
}
}

StreamConverters
.fromInputStream(() =>
new InputStream {
@volatile var num = 0
override def read(): Int = {
num += 1
num
}
})
// The TCK counts publisher elements, so emit one byte per ByteString.
.fromInputStream(() => inputStream, chunkSize = 1)
.withAttributes(ActorAttributes.dispatcher("pekko.test.stream-dispatcher"))
.take(elements)
.runWith(Sink.asPublisher(false))
}
}