raboof/pekko
1
0
Fork 0
Code Issues Pull requests Projects Releases 6 Packages Wiki Activity Actions 11

#19444 simplify signature of FlowOps.expand

Browse source 
Any previous usage can be represented in this fashion while typically
saving one function allocation and also saving the function literal’s
syntax overhead (for the seed). Plus a new feature: the provided
iterator does not have to be infinite, limiting how far expand is
allowed to go.
This commit is contained in:
Roland Kuhn 2016-01-18 11:29:14 +01:00
parent a12451e007
commit 7463c50fc9
16 changed files with 127 additions and 151 deletions
Download patch file Download diff file Expand all files Collapse all files

13
akka-stream-tests/src/test/java/akka/stream/javadsl/SourceTest.java
View file

@ -31,6 +31,7 @@ import scala.util.Try;
import java.util.*;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.stream.Stream;
import static akka.stream.testkit.StreamTestKit.PublisherProbeSubscription;
import static akka.stream.testkit.TestPublisher.ManualProbe;
@ -439,17 +440,7 @@ public class SourceTest extends StreamTest {
public void mustBeAbleToUseExpand() throws Exception {
final JavaTestKit probe = new JavaTestKit(system);
final List<String> input = Arrays.asList("A", "B", "C");
Future<String> future = Source.from(input).expand(new Function<String, String>() {
@Override
public String apply(String in) throws Exception {
return in;
}
}, new Function<String, Pair<String, String>>() {
@Override
public Pair<String, String> apply(String in) throws Exception {
return new Pair<String, String>(in, in);
}
}).runWith(Sink.<String>head(), materializer);
Future<String> future = Source.from(input).expand(in -> Stream.iterate(in, i -> i).iterator()).runWith(Sink.<String>head(), materializer);
String result = Await.result(future, probe.dilated(FiniteDuration.create(3, TimeUnit.SECONDS)));
assertEquals("A", result);
}