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<!DOCTYPE html>
<title> postMessage(): clone a port </title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id=log></div>
async_test(function(t) {
var channelA = new MessageChannel();
var channelB = new MessageChannel();
var originalPort = channelB.port2;
channelA.port2.onmessage = t.step_func(function(e) {
assert_equals(, "ports");
var clonedPort = e.ports[0];
assert_not_equals(clonedPort, originalPort, "new cloned port object should not equal to the original port!");
clonedPort.onmessage = t.step_func_done(function(e) {
assert_equals(, "ping", "Data sent through remote port is received by the new cloned port");
channelA.port1.postMessage("ports", [channelB.port2]);