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+str #19069 Add FlowOp.prepend for prepending Sources to Flows

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Iain Monro 2015-12-07 12:16:59 +00:00 • committed by Roland Kuhn
parent dcfa56e547
commit 52655f2836
10 changed files with 216 additions and 1 deletions
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19
akka-stream-tests/src/test/java/akka/stream/javadsl/FlowTest.java
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@ -408,6 +408,25 @@ public class FlowTest extends StreamTest {
assertEquals(Arrays.asList("A", "B", "C", "D", "E", "F"), output);
}
@Test
public void mustBeAbleToUsePrepend() {
final JavaTestKit probe = new JavaTestKit(system);
final Iterable<String> input1 = Arrays.asList("A", "B", "C");
final Iterable<String> input2 = Arrays.asList("D", "E", "F");
final Source<String, ?> in1 = Source.from(input1);
final Source<String, ?> in2 = Source.from(input2);
final Flow<String, String, ?> flow = Flow.of(String.class);
in2.via(flow.prepend(in1)).runForeach(new Procedure<String>() {
public void apply(String elem) {
probe.getRef().tell(elem, ActorRef.noSender());
}
}, materializer);
List<Object> output = Arrays.asList(probe.receiveN(6));
assertEquals(Arrays.asList("A", "B", "C", "D", "E", "F"), output);
}
@Test
public void mustBeAbleToUsePrefixAndTail() throws Exception {
final JavaTestKit probe = new JavaTestKit(system);