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Stream: Sugar for Sink.ignore #27789, #24986

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Jacek Ewertowski 2020-03-23 13:05:25 +01:00 • committed by GitHub
parent f8d7b0c94a
commit 2cccfa3c29
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5 changed files with 57 additions and 6 deletions
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24
akka-stream-tests/src/test/java/akka/stream/javadsl/SourceTest.java
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@ -36,6 +36,7 @@ import java.util.concurrent.CompletionStage;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.stream.IntStream;
import java.util.stream.Stream;
import static akka.NotUsed.notUsed;
@ -1184,4 +1185,27 @@ public class SourceTest extends StreamTest {
new Boolean[] {false, true, false, true, false, true, false, true, false, true},
future.get(1, TimeUnit.SECONDS).toArray());
}
@Test
public void mustRunSourceAndIgnoreElementsItOutputsAndOnlySignalTheCompletion() {
final Iterator<Integer> iterator = IntStream.range(1, 10).iterator();
final Creator<Iterator<Integer>> input = () -> iterator;
final Done completion =
Source.fromIterator(input).map(it -> it * 10).run(system).toCompletableFuture().join();
assertEquals(completion, Done.getInstance());
}
@Test
public void mustRunSourceAndIgnoreElementsItOutputsAndOnlySignalTheCompletionWithMaterializer() {
final Materializer materializer = Materializer.createMaterializer(system);
final Iterator<Integer> iterator = IntStream.range(1, 10).iterator();
final Creator<Iterator<Integer>> input = () -> iterator;
final Done completion =
Source.fromIterator(input)
.map(it -> it * 10)
.run(materializer)
.toCompletableFuture()
.join();
assertEquals(completion, Done.getInstance());
}
}