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diff --git a/testing/web-platform/tests/webmessaging/Channel_postMessage_clone_port.htm b/testing/web-platform/tests/webmessaging/Channel_postMessage_clone_port.htm
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index 000000000..0e2e2fcd1
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+++ b/testing/web-platform/tests/webmessaging/Channel_postMessage_clone_port.htm
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+<!DOCTYPE html>
+<html>
+<head>
+<title> postMessage(): clone a port </title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<div id=log></div>
+<script>
+    var OriginalPort = null;
+    var ClonedPort = null;
+    var description = "Test Description: When the user agent is to clone a port original port, with "
+                    + "the clone being owned by owner, it must return a new MessagePort object";
+
+    var t = async_test("Test Description: " + description);
+
+    var ChannelA = new MessageChannel();
+    var ChannelB = new MessageChannel();
+    OriginalPort = ChannelB.port2;
+
+    ChannelA.port2.onmessage = t.step_func(function(evt)
+    {
+        if(evt.data == "ports")
+        {
+            ClonedPort = evt.ports[0];
+
+            assert_not_equals(ClonedPort, OriginalPort, "new cloned port object should not equal to the original port!");
+
+            ClonedPort.onmessage = function(e)
+            {
+                test(function(){ assert_equals(e.data, "ping"); }, "Data sent through remote port is received by the new cloned port");
+                t.done();
+            }
+        }
+    });
+
+    ChannelA.port1.postMessage("ports", [OriginalPort]);
+    ChannelB.port1.postMessage("ping");
+</script>
+</body>
+</html>