<!DOCTYPE html>
<script src="../../../resources/js-test-pre.js"></script>
<script>
if (window.testRunner)
    testRunner.dumpChildFramesAsText();
</script>
This test should not cause any navigation.
<iframe srcdoc="
    PASS
    <iframe seamless sandbox='allow-scripts'
            srcdoc='
                <script>
                    window.location = &quot;resources/done.html&quot;;
                </script>
                PASS
            '>
    </iframe>
"></iframe>