<iframe src="resources/innocent-victim.html"></iframe>
<div id="console">FAIL</div>
<script>
if (window.testRunner)
    testRunner.dumpAsText();

window.onload = function() {
    window.f = frames[0].atob;
    try {
        document.domain = "0.0.2";
    } catch (e) {
        if ("message" in e || (e.message.search("SecurityError:") != -1)) {
            document.getElementById("console").innerHTML = "PASS"
            return
        }
    }
    if (btoa(window.f("TEST")) == "TEST")
        document.getElementById("console").innerHTML = "FAIL"
}
</script>