@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, NotUsed> in1 = Source.from(input1);
final Source<String, NotUsed> in2 = Source.from(input2);
in2.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);
}
