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

<!DOCTYPE html>
<head>
<meta http-equiv="content-security-policy" content="script-src 'self' 'nonce-abc'">
<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'self'%20'unsafe-inline'"></iframe>
<script nonce='abc'>
  var t = async_test("Should not have executed the javascript url");
  const iframe = document.querySelector("iframe");
  iframe.addEventListener('load', () => {
    window.onmessage = t.step_func(function(e) {
      if (e.data == "executed")
        assert_true(false, "Javascript url executed");
    });
    window.addEventListener('securitypolicyviolation', t.step_func_done(function(e) {
      assert_equals(e.blockedURI, 'inline');
    }));
    iframe.contentWindow.location.href = 'javascript:parent.postMessage(\'executed\', \'*\')'
  });
</script>
</body>