+str #17338 add OutputStreamSource and InputStreamSink

akka-stream-tests/src/test/java/akka/stream/io/OutputStreamSourceTest.java

@@ -0,0 +1,56 @@
+/**
+ * Copyright (C) 2015 Typesafe Inc. <http://www.typesafe.com>
+ */
+package akka.stream.io;
+
+import akka.actor.ActorRef;
+import akka.japi.Pair;
+import akka.japi.function.Procedure;
+import akka.stream.StreamTest;
+import akka.stream.javadsl.AkkaJUnitActorSystemResource;
+import akka.stream.javadsl.Keep;
+import akka.stream.javadsl.Sink;
+import akka.stream.javadsl.Source;
+import akka.stream.testkit.AkkaSpec;
+import akka.stream.testkit.Utils;
+import akka.testkit.JavaTestKit;
+import akka.util.ByteString;
+import com.typesafe.config.ConfigFactory;
+import org.junit.ClassRule;
+import org.junit.Test;
+import scala.concurrent.Future;
+import scala.concurrent.duration.FiniteDuration;
+import scala.runtime.BoxedUnit;
+
+import java.io.OutputStream;
+import java.util.concurrent.TimeUnit;
+
+import static org.junit.Assert.assertEquals;
+
+public class OutputStreamSourceTest extends StreamTest {
+    public OutputStreamSourceTest() {
+        super(actorSystemResource);
+    }
+
+    @ClassRule
+    public static AkkaJUnitActorSystemResource actorSystemResource = new AkkaJUnitActorSystemResource("OutputStreamSource",
+            Utils.UnboundedMailboxConfig());
+    @Test
+    public void mustSendEventsViaOutputStream() throws Exception {
+        final FiniteDuration timeout = FiniteDuration.create(300, TimeUnit.MILLISECONDS);
+        final JavaTestKit probe = new JavaTestKit(system);
+
+        final Source<ByteString, OutputStream> source = OutputStreamSource.create(timeout);
+        final OutputStream s = source.to(Sink.foreach(new Procedure<ByteString>() {
+            public void apply(ByteString elem) {
+                probe.getRef().tell(elem, ActorRef.noSender());
+            }
+        })).run(materializer);
+
+        s.write("a".getBytes());
+        assertEquals(ByteString.fromString("a"), probe.receiveOne(timeout));
+        s.close();
+
+    }
+
+}