<script>
if (window.testRunner)
testRunner.dumpAsText();
</script>
<iframe src="data:text/html,<script>alert(/FAIL/);</script>" srcdoc="PASS"></iframe>
This test passes if it doesn't alert FAIL.
<script>
if (window.testRunner)
testRunner.dumpAsText();
</script>
<iframe src="data:text/html,<script>alert(/FAIL/);</script>" srcdoc="PASS"></iframe>
This test passes if it doesn't alert FAIL.