<!DOCTYPE html>
<html>
<body>
<script src="/js-test-resources/js-test.js"></script>
<script>
description("Test blocking of suspicious top-level navigations by a third-party iframe even if sandboxing rules allow top navigation");
jsTestIsAsync = true;
onload = () => {
    setTimeout(() => {
        document.getElementById('testFrame').src = "http://localhost:8000/security/resources/navigate-top-level-frame-to-failure-page-via-sandboxed-iframe.html";
        setTimeout(() => {
            testPassed("All navigations by subframes have been blocked");
            finishJSTest();
        }, 100);
    }, 10);
}
</script>
<iframe id="testFrame"></iframe>
</body>
</html>