File: postMessage_dup_transfer_objects.htm

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<!DOCTYPE html>
<html>
<head>
<title> postMessage with duplicate transfer objects raises DataCloneError exception </title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<div id=log></div>

<div style="display:none">
    <iframe width="70%" onload="PostMessageTest()" src="./support/ChildWindowPostMessage.htm"></iframe>
</div>

<script>


    var description = "Test Description: " +
                      "postMessage with duplicate transfer objects raises DataCloneError exception.";

    var DATA = "ports";
    var TARGET = document.querySelector("iframe");

    function PostMessageTest()
    {
        test(function()
        {
            assert_throws("DATA_CLONE_ERR", function()
            {
                assert_own_property(window, "MessageChannel", "window");
                var channel = new MessageChannel();
                TARGET.contentWindow.postMessage(DATA, "*", [channel.port1, channel.port1]);
            });
        }, description);
    }
</script>
</body>
</html>