chromium/third_party/blink/web_tests/external/wpt/content-security-policy/navigation/to-javascript-parent-initiated-child-csp.html

<!DOCTYPE html>
<head>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<iframe src="support/frame-with-csp.sub.html?csp=script-src%20%27unsafe-inline%27"></iframe>
<div onclick="frames[0].location.href = 'javascript:parent.postMessage(\'executed\', \'*\')'" id="special_div"></div>
<script>
  var t = async_test("Should have executed the javascript url");
  frames[0].addEventListener('load', () => {
    window.onmessage = t.step_func(function(e) {
      if (e.data == "executed")
        t.done();
    });
    window.addEventListener('securitypolicyviolation', t.unreached_func("Should not have raised a violation event"));
    document.getElementById('special_div').click();
  });
</script>
</body>