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chromium/third_party/blink/web_tests/external/wpt/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/document-open-cancels-javascript-url-navigation.html 

<body>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
async_test(t => {
  window.onload = t.step_func_done(() => assert_equals(i.contentDocument.body.innerText, "PASS"));

  var i = document.createElement('iframe');
  i.id ='i';
  i.src = "javascript:'FAIL'";
  document.body.appendChild(i);
  i.contentDocument.open();
  i.contentDocument.write("PASS")
  i.contentDocument.close();
});
</script>
</body>