<!DOCTYPE html>
<html>
<head>
    <script>
        if (window.testRunner) {
            testRunner.dumpAsText();
            testRunner.waitUntilDone();
            testRunner.setXSSAuditorEnabled(true);
        }
    </script>
</head>
<body>
    <iframe src="http://localhost:8000/security/xssAuditor/resources/echo-intertag.pl?test=/security/xssAuditor/formaction-on-button.html&q=<form><button%20formaction='http://example.com/'>&notifyDone=1&showFormaction=1"></iframe>
</body>
</html>