diff -r 8a153a932d0f -r 3ae57bbf9585 test/jdk/java/net/httpclient/reactivestreams-tck-tests/BodySubscribersOfPublisher.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/net/httpclient/reactivestreams-tck-tests/BodySubscribersOfPublisher.java	Tue Jul 02 13:25:51 2019 +0100
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import org.reactivestreams.tck.TestEnvironment;
+import org.reactivestreams.tck.flow.FlowSubscriberBlackboxVerification;
+
+import java.net.http.HttpResponse.BodySubscriber;
+import java.net.http.HttpResponse.BodySubscribers;
+import java.nio.ByteBuffer;
+import java.util.List;
+import java.util.concurrent.CompletionStage;
+import java.util.concurrent.Flow.Publisher;
+import java.util.concurrent.Flow.Subscriber;
+import java.util.concurrent.Flow.Subscription;
+
+/* See TckDriver.java for more information */
+public class BodySubscribersOfPublisher
+        extends FlowSubscriberBlackboxVerification<List<ByteBuffer>> {
+
+    public BodySubscribersOfPublisher() {
+        super(new TestEnvironment(450L));
+    }
+
+    /* The reason for overriding this method is that BodySubscribers.ofPublisher
+       is somewhat tricky. It is not an independent Subscriber, but rather
+       an adaptor from Subscriber to Publisher. Until the Subscriber that
+       subscribed to that resulting Publisher requests anything, nothing
+       happens. */
+    @Override
+    public void triggerFlowRequest(
+            Subscriber<? super List<ByteBuffer>> subscriber)
+    {
+        BodySubscriber<Publisher<List<ByteBuffer>>> sub =
+                (BodySubscriber<Publisher<List<ByteBuffer>>>) subscriber;
+        CompletionStage<Publisher<List<ByteBuffer>>> body = sub.getBody();
+        Publisher<List<ByteBuffer>> pub = body.toCompletableFuture().join();
+        pub.subscribe(new Subscriber<>() {
+
+            @Override
+            public void onSubscribe(Subscription subscription) {
+                subscription.request(Integer.MAX_VALUE);
+            }
+
+            @Override public void onNext(List<ByteBuffer> item) { }
+            @Override public void onError(Throwable throwable) { }
+            @Override public void onComplete() { }
+        });
+    }
+
+    @Override
+    public Subscriber<List<ByteBuffer>> createFlowSubscriber() {
+        return BodySubscribers.ofPublisher();
+    }
+
+    @Override
+    public List<ByteBuffer> createElement(int element) {
+        return S.listOfBuffersFromBufferOfNBytes(element % 17);
+    }
+}