+str #17338 add OutputStreamSource and InputStreamSink

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

@@ -0,0 +1,48 @@
+/**
+ * Copyright (C) 2015 Typesafe Inc. <http://www.typesafe.com>
+ */
+package akka.stream.io;
+
+import akka.japi.Pair;
+import akka.stream.StreamTest;
+import akka.stream.javadsl.AkkaJUnitActorSystemResource;
+import akka.stream.javadsl.Sink;
+import akka.stream.javadsl.Source;
+import akka.stream.testkit.AkkaSpec;
+import akka.stream.testkit.Utils;
+import akka.util.ByteString;
+import org.junit.ClassRule;
+import org.junit.Test;
+import scala.concurrent.Future;
+import scala.concurrent.duration.FiniteDuration;
+
+import java.io.InputStream;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+
+import static org.junit.Assert.assertTrue;
+
+public class InputStreamSinkTest  extends StreamTest {
+    public InputStreamSinkTest() {
+        super(actorSystemResource);
+    }
+
+    @ClassRule
+    public static AkkaJUnitActorSystemResource actorSystemResource = new AkkaJUnitActorSystemResource("InputStreamSink",
+            Utils.UnboundedMailboxConfig());
+    @Test
+    public void mustReadEventViaInputStream() throws Exception {
+        final FiniteDuration timeout = FiniteDuration.create(300, TimeUnit.MILLISECONDS);
+
+        final Sink<ByteString, InputStream> sink = InputStreamSink.create(timeout);
+        final List<ByteString> list = Collections.singletonList(ByteString.fromString("a"));
+        final InputStream stream = Source.from(list).runWith(sink, materializer);
+
+        byte[] a = new byte[1];
+        stream.read(a);
+        assertTrue(Arrays.equals("a".getBytes(), a));
+    }
+
+}