+pro #15406 Split up stream into testkit, tests and tck
This commit is contained in:
Björn Antonsson
parent
f73bfc6da1
commit
a902d079b0
130 changed files with 1 additions and 10 deletions
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@ -0,0 +1,525 @@
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package akka.stream.javadsl;
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import akka.actor.ActorRef;
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import akka.actor.ActorSystem;
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import akka.dispatch.Futures;
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import akka.dispatch.Mapper;
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import akka.japi.*;
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import akka.stream.*;
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import akka.stream.testkit.AkkaSpec;
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import akka.testkit.JavaTestKit;
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import org.junit.ClassRule;
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import org.junit.Test;
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import org.reactivestreams.Publisher;
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import scala.Option;
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import scala.concurrent.Await;
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import scala.concurrent.Future;
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import scala.concurrent.duration.FiniteDuration;
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import java.util.*;
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import java.util.concurrent.Callable;
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import java.util.concurrent.TimeUnit;
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import static org.junit.Assert.assertEquals;
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public class FlowTest {
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@ClassRule
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public static AkkaJUnitActorSystemResource actorSystemResource = new AkkaJUnitActorSystemResource("FlowTest",
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AkkaSpec.testConf());
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final ActorSystem system = actorSystemResource.getSystem();
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final MaterializerSettings settings = MaterializerSettings.create(system.settings().config()).withDispatcher("akka.test.stream-dispatcher");
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final FlowMaterializer materializer = FlowMaterializer.create(settings, system);
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@Test
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public void mustBeAbleToUseSimpleOperators() {
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final JavaTestKit probe = new JavaTestKit(system);
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final String[] lookup = { "a", "b", "c", "d", "e", "f" };
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final java.util.Iterator<Integer> input = Arrays.asList(0, 1, 2, 3, 4, 5).iterator();
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Flow.create(input).drop(2).take(3).takeWithin(FiniteDuration.create(10, TimeUnit.SECONDS))
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.map(new Function<Integer, String>() {
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public String apply(Integer elem) {
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return lookup[elem];
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}
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}).filter(new Predicate<String>() {
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public boolean test(String elem) {
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return !elem.equals("c");
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}
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}).grouped(2).mapConcat(new Function<java.util.List<String>, java.util.List<String>>() {
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public java.util.List<String> apply(java.util.List<String> elem) {
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return elem;
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}
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}).groupedWithin(100, FiniteDuration.create(50, TimeUnit.MILLISECONDS))
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.mapConcat(new Function<java.util.List<String>, java.util.List<String>>() {
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public java.util.List<String> apply(java.util.List<String> elem) {
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return elem;
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}
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}).fold("", new Function2<String, String, String>() {
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public String apply(String acc, String elem) {
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return acc + elem;
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}
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}).foreach(new Procedure<String>() {
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public void apply(String elem) {
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probe.getRef().tell(elem, ActorRef.noSender());
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}
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}, materializer);
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probe.expectMsgEquals("de");
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}
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@Test
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public void mustBeAbleToUseVoidTypeInForeach() {
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final JavaTestKit probe = new JavaTestKit(system);
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final java.util.Iterator<String> input = Arrays.asList("a", "b", "c").iterator();
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Future<Void> fut = Flow.create(input).foreach(new Procedure<String>() {
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public void apply(String elem) {
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probe.getRef().tell(elem, ActorRef.noSender());
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}
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}, materializer);
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fut.map(new Mapper<Void, String>() {
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public String apply(Void elem) {
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probe.getRef().tell(String.valueOf(elem), ActorRef.noSender());
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return String.valueOf(elem);
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}
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}, system.dispatcher());
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probe.expectMsgEquals("a");
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probe.expectMsgEquals("b");
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probe.expectMsgEquals("c");
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probe.expectMsgEquals("null");
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}
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@Test
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public void mustBeAbleToUseTransform() {
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final JavaTestKit probe = new JavaTestKit(system);
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final JavaTestKit probe2 = new JavaTestKit(system);
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final java.lang.Iterable<Integer> input = Arrays.asList(0, 1, 2, 3, 4, 5, 6, 7);
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// duplicate each element, stop after 4 elements, and emit sum to the end
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Flow.create(input).transform("publish", new Creator<Transformer<Integer, Integer>>() {
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@Override
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public Transformer<Integer, Integer> create() throws Exception {
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return new Transformer<Integer, Integer>() {
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int sum = 0;
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int count = 0;
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@Override
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public scala.collection.immutable.Seq<Integer> onNext(Integer element) {
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sum += element;
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count += 1;
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return Util.immutableSeq(new Integer[]{element, element});
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}
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@Override
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public boolean isComplete() {
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return count == 4;
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}
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@Override
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public scala.collection.immutable.Seq<Integer> onTermination(Option<Throwable> e) {
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return Util.immutableSingletonSeq(sum);
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}
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@Override
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public void cleanup() {
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probe2.getRef().tell("cleanup", ActorRef.noSender());
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}
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};
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}
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}).foreach(new Procedure<Integer>() {
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public void apply(Integer elem) {
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probe.getRef().tell(elem, ActorRef.noSender());
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}
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}, materializer);
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probe.expectMsgEquals(0);
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probe.expectMsgEquals(0);
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probe.expectMsgEquals(1);
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probe.expectMsgEquals(1);
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probe.expectMsgEquals(2);
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probe.expectMsgEquals(2);
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probe.expectMsgEquals(3);
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probe.expectMsgEquals(3);
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probe.expectMsgEquals(6);
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probe2.expectMsgEquals("cleanup");
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}
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@Test
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public void mustBeAbleToUseTransformRecover() {
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final JavaTestKit probe = new JavaTestKit(system);
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final java.lang.Iterable<Integer> input = Arrays.asList(0, 1, 2, 3, 4, 5);
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Flow.create(input).map(new Function<Integer, Integer>() {
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public Integer apply(Integer elem) {
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if (elem == 4)
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throw new IllegalArgumentException("4 not allowed");
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else
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return elem + elem;
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}
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}).transform("publish", new Creator<Transformer<Integer, String>>() {
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@Override
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public Transformer<Integer, String> create() throws Exception {
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return new Transformer<Integer, String>() {
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@Override
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public scala.collection.immutable.Seq<String> onNext(Integer element) {
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return Util.immutableSingletonSeq(element.toString());
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}
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@Override
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public scala.collection.immutable.Seq<String> onTermination(Option<Throwable> e) {
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if (e.isEmpty()) {
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return Util.immutableSeq(new String[0]);
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} else {
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return Util.immutableSingletonSeq(e.get().getMessage());
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}
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}
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@Override
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public void onError(Throwable e) {
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}
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@Override
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public boolean isComplete() {
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return false;
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}
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@Override
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public void cleanup() {
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}
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};
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}
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}).foreach(new Procedure<String>() {
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public void apply(String elem) {
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probe.getRef().tell(elem, ActorRef.noSender());
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}
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}, materializer);
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probe.expectMsgEquals("0");
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probe.expectMsgEquals("2");
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probe.expectMsgEquals("4");
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probe.expectMsgEquals("6");
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probe.expectMsgEquals("4 not allowed");
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}
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@Test
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public void mustBeAbleToUseGroupBy() {
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final JavaTestKit probe = new JavaTestKit(system);
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final java.lang.Iterable<String> input = Arrays.asList("Aaa", "Abb", "Bcc", "Cdd", "Cee");
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Flow.create(input).groupBy(new Function<String, String>() {
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public String apply(String elem) {
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return elem.substring(0, 1);
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}
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}).foreach(new Procedure<Pair<String, Publisher<String>>>() {
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public void apply(final Pair<String, Publisher<String>> pair) {
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Flow.create(pair.second()).foreach(new Procedure<String>() {
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public void apply(String elem) {
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probe.getRef().tell(new Pair<String, String>(pair.first(), elem), ActorRef.noSender());
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}
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}, materializer);
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}
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}, materializer);
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Map<String, List<String>> grouped = new HashMap<String, List<String>>();
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for (Object o : probe.receiveN(5)) {
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@SuppressWarnings("unchecked")
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Pair<String, String> p = (Pair<String, String>) o;
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List<String> g = grouped.get(p.first());
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if (g == null)
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g = new ArrayList<String>();
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g.add(p.second());
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grouped.put(p.first(), g);
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}
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assertEquals(Arrays.asList("Aaa", "Abb"), grouped.get("A"));
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}
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@Test
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public void mustBeAbleToUseSplitWhen() {
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final JavaTestKit probe = new JavaTestKit(system);
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final java.lang.Iterable<String> input = Arrays.asList("A", "B", "C", "\n", "D", "\n", "E", "F");
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Flow.create(input).splitWhen(new Predicate<String>() {
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public boolean test(String elem) {
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return elem.equals("\n");
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}
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}).foreach(new Procedure<Publisher<String>>() {
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public void apply(Publisher<String> subPublisher) {
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Flow.create(subPublisher).filter(new Predicate<String>() {
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public boolean test(String elem) {
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return !elem.equals("\n");
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}
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}).grouped(10).foreach(new Procedure<List<String>>() {
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public void apply(List<String> chunk) {
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probe.getRef().tell(chunk, ActorRef.noSender());
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}
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}, materializer);
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}
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}, materializer);
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for (Object o : probe.receiveN(3)) {
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@SuppressWarnings("unchecked")
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List<String> chunk = (List<String>) o;
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if (chunk.get(0).equals("A"))
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assertEquals(Arrays.asList("A", "B", "C"), chunk);
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else if (chunk.get(0).equals("D"))
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assertEquals(Arrays.asList("D"), chunk);
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else if (chunk.get(0).equals("E"))
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assertEquals(Arrays.asList("E", "F"), chunk);
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else
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assertEquals("[A, B, C] or [D] or [E, F]", chunk);
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}
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}
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@Test
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public void mustBeAbleToUseMerge() {
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final JavaTestKit probe = new JavaTestKit(system);
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final java.lang.Iterable<String> input1 = Arrays.asList("A", "B", "C");
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final java.lang.Iterable<String> input2 = Arrays.asList("D", "E", "F");
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Flow.create(input1).merge(Flow.create(input2).toPublisher(materializer)).foreach(new Procedure<String>() {
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public void apply(String elem) {
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probe.getRef().tell(elem, ActorRef.noSender());
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}
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}, materializer);
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Set<Object> output = new HashSet<Object>(Arrays.asList(probe.receiveN(6)));
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assertEquals(new HashSet<Object>(Arrays.asList("A", "B", "C", "D", "E", "F")), output);
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}
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@Test
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public void mustBeAbleToUseZip() {
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final JavaTestKit probe = new JavaTestKit(system);
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final java.lang.Iterable<String> input1 = Arrays.asList("A", "B", "C");
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final java.lang.Iterable<Integer> input2 = Arrays.asList(1, 2, 3);
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Flow.create(input1).zip(Flow.create(input2).toPublisher(materializer))
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.foreach(new Procedure<Pair<String, Integer>>() {
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public void apply(Pair<String, Integer> elem) {
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probe.getRef().tell(elem, ActorRef.noSender());
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}
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}, materializer);
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List<Object> output = Arrays.asList(probe.receiveN(3));
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@SuppressWarnings("unchecked")
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List<Pair<String, Integer>> expected = Arrays.asList(new Pair<String, Integer>("A", 1), new Pair<String, Integer>(
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"B", 2), new Pair<String, Integer>("C", 3));
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assertEquals(expected, output);
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}
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@Test
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public void mustBeAbleToUseConcat() {
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final JavaTestKit probe = new JavaTestKit(system);
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final java.lang.Iterable<String> input1 = Arrays.asList("A", "B", "C");
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final java.lang.Iterable<String> input2 = Arrays.asList("D", "E", "F");
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Flow.create(input1).concat(Flow.create(input2).toPublisher(materializer)).foreach(new Procedure<String>() {
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public void apply(String elem) {
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probe.getRef().tell(elem, ActorRef.noSender());
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}
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}, materializer);
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List<Object> output = Arrays.asList(probe.receiveN(6));
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assertEquals(Arrays.asList("A", "B", "C", "D", "E", "F"), output);
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}
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@Test
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public void mustBeAbleToUseCallableInput() {
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final JavaTestKit probe = new JavaTestKit(system);
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final Callable<Integer> input = new Callable<Integer>() {
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int countdown = 5;
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@Override
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public Integer call() {
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if (countdown == 0)
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return null;
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else {
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countdown -= 1;
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return countdown;
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}
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}
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};
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Flow.create(input).foreach(new Procedure<Integer>() {
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public void apply(Integer elem) {
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probe.getRef().tell(elem, ActorRef.noSender());
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}
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}, materializer);
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List<Object> output = Arrays.asList(probe.receiveN(5));
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assertEquals(Arrays.asList(4, 3, 2, 1, 0), output);
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probe.expectNoMsg(FiniteDuration.create(500, TimeUnit.MILLISECONDS));
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}
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@Test
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public void mustBeAbleToUseOnCompleteSuccess() {
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final JavaTestKit probe = new JavaTestKit(system);
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final java.lang.Iterable<String> input = Arrays.asList("A", "B", "C");
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Flow.create(input).onComplete(new OnCompleteCallback() {
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@Override
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public void onComplete(Throwable e) {
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probe.getRef().tell((e == null) ? "done" : e, ActorRef.noSender());
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}
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}, materializer);
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probe.expectMsgEquals("done");
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}
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@Test
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public void mustBeAbleToUseOnCompleteError() {
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final JavaTestKit probe = new JavaTestKit(system);
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final java.lang.Iterable<String> input = Arrays.asList("A", "B", "C");
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Flow.create(input).map(new Function<String, String>() {
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public String apply(String arg0) throws Exception {
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throw new RuntimeException("simulated err");
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}
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}).onComplete(new OnCompleteCallback() {
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@Override
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public void onComplete(Throwable e) {
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if (e == null)
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probe.getRef().tell("done", ActorRef.noSender());
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else
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probe.getRef().tell(e.getMessage(), ActorRef.noSender());
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}
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}, materializer);
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probe.expectMsgEquals("simulated err");
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}
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@Test
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public void mustBeAbleToUseToFuture() throws Exception {
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final JavaTestKit probe = new JavaTestKit(system);
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final java.lang.Iterable<String> input = Arrays.asList("A", "B", "C");
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Future<String> future = Flow.create(input).toFuture(materializer);
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String result = Await.result(future, probe.dilated(FiniteDuration.create(3, TimeUnit.SECONDS)));
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assertEquals("A", result);
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}
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@Test
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public void mustBeAbleToUsePrefixAndTail() throws Exception {
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final JavaTestKit probe = new JavaTestKit(system);
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final java.lang.Iterable<Integer> input = Arrays.asList(1, 2, 3, 4, 5, 6);
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Future<Pair<List<Integer>, Publisher<Integer>>> future = Flow.create(input).prefixAndTail(3).toFuture(materializer);
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Pair<List<Integer>, Publisher<Integer>> result = Await.result(future,
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probe.dilated(FiniteDuration.create(3, TimeUnit.SECONDS)));
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assertEquals(Arrays.asList(1, 2, 3), result.first());
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Future<List<Integer>> tailFuture = Flow.create(result.second()).grouped(4).toFuture(materializer);
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List<Integer> tailResult = Await.result(tailFuture, probe.dilated(FiniteDuration.create(3, TimeUnit.SECONDS)));
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assertEquals(Arrays.asList(4, 5, 6), tailResult);
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}
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@Test
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public void mustBeAbleToUseConcatAll() throws Exception {
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final JavaTestKit probe = new JavaTestKit(system);
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final java.lang.Iterable<Integer> input1 = Arrays.asList(1, 2, 3);
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final java.lang.Iterable<Integer> input2 = Arrays.asList(4, 5);
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final List<Publisher<Integer>> mainInputs = Arrays.asList(Flow.create(input1).toPublisher(materializer), Flow
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.create(input2).toPublisher(materializer));
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Future<List<Integer>> future = Flow.create(mainInputs).<Integer> flatten(FlattenStrategy.<Integer> concat())
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.grouped(6).toFuture(materializer);
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List<Integer> result = Await.result(future, probe.dilated(FiniteDuration.create(3, TimeUnit.SECONDS)));
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assertEquals(Arrays.asList(1, 2, 3, 4, 5), result);
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}
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@Test
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public void mustBeAbleToUseBuffer() throws Exception {
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final JavaTestKit probe = new JavaTestKit(system);
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final List<String> input = Arrays.asList("A", "B", "C");
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Future<List<String>> future = Flow.create(input).buffer(2, OverflowStrategy.backpressure()).grouped(4)
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.toFuture(materializer);
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List<String> result = Await.result(future, probe.dilated(FiniteDuration.create(3, TimeUnit.SECONDS)));
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assertEquals(input, result);
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}
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@Test
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public void mustBeAbleToUseConflate() throws Exception {
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final JavaTestKit probe = new JavaTestKit(system);
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final List<String> input = Arrays.asList("A", "B", "C");
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Future<String> future = Flow.create(input).conflate(new Function<String, String>() {
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@Override
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public String apply(String s) throws Exception {
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return s;
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}
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}, new Function2<String, String, String>() {
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@Override
|
||||
public String apply(String in, String aggr) throws Exception {
|
||||
return in;
|
||||
}
|
||||
}).fold("", new Function2<String, String, String>() {
|
||||
@Override
|
||||
public String apply(String aggr, String in) throws Exception {
|
||||
return in;
|
||||
}
|
||||
}).toFuture(materializer);
|
||||
String result = Await.result(future, probe.dilated(FiniteDuration.create(3, TimeUnit.SECONDS)));
|
||||
assertEquals("C", result);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void mustBeAbleToUseExpand() throws Exception {
|
||||
final JavaTestKit probe = new JavaTestKit(system);
|
||||
final List<String> input = Arrays.asList("A", "B", "C");
|
||||
Future<String> future = Flow.create(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);
|
||||
}
|
||||
}).toFuture(materializer);
|
||||
String result = Await.result(future, probe.dilated(FiniteDuration.create(3, TimeUnit.SECONDS)));
|
||||
assertEquals("A", result);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void mustProduceTicks() throws Exception {
|
||||
final JavaTestKit probe = new JavaTestKit(system);
|
||||
final Callable<String> tick = new Callable<String>() {
|
||||
private int count = 1;
|
||||
|
||||
@Override
|
||||
public String call() {
|
||||
return "tick-" + (count++);
|
||||
}
|
||||
};
|
||||
Flow.create(FiniteDuration.create(1, TimeUnit.SECONDS), FiniteDuration.create(500, TimeUnit.MILLISECONDS), tick)
|
||||
.foreach(new Procedure<String>() {
|
||||
public void apply(String elem) {
|
||||
probe.getRef().tell(elem, ActorRef.noSender());
|
||||
}
|
||||
}, materializer);
|
||||
probe.expectNoMsg(FiniteDuration.create(600, TimeUnit.MILLISECONDS));
|
||||
probe.expectMsgEquals("tick-1");
|
||||
probe.expectNoMsg(FiniteDuration.create(200, TimeUnit.MILLISECONDS));
|
||||
probe.expectMsgEquals("tick-2");
|
||||
probe.expectNoMsg(FiniteDuration.create(200, TimeUnit.MILLISECONDS));
|
||||
|
||||
}
|
||||
|
||||
@Test
|
||||
public void mustBeAbleToUseMapFuture() throws Exception {
|
||||
final JavaTestKit probe = new JavaTestKit(system);
|
||||
final java.lang.Iterable<String> input = Arrays.asList("a", "b", "c");
|
||||
Flow.create(input).mapFuture(new Function<String, Future<String>>() {
|
||||
public Future<String> apply(String elem) {
|
||||
return Futures.successful(elem.toUpperCase());
|
||||
}
|
||||
}).foreach(new Procedure<String>() {
|
||||
public void apply(String elem) {
|
||||
probe.getRef().tell(elem, ActorRef.noSender());
|
||||
}
|
||||
}, materializer);
|
||||
probe.expectMsgEquals("A");
|
||||
probe.expectMsgEquals("B");
|
||||
probe.expectMsgEquals("C");
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue