chromium/third_party/blink/web_tests/fast/dom/HTMLScriptElement/dont-load-unknown-type.html

<div id="console"></div>
<script>
  if (window.testRunner)
    testRunner.dumpAsText();

  function fail(str) {
    var element = document.createElement("p");
    element.innerHTML = str;
    document.getElementById("console").appendChild(element);
  }

  var bogus_script = document.createElement("script");
  bogus_script.type = "bogus";
  bogus_script.src = "shouldnotexecute.js";
  document.getElementsByTagName("head")[0].appendChild(bogus_script);
</script>
<script type="fake" src="shouldnotexecute.js"></script>
Unknown script types should not be loaded nor executed. If this test fails, an extra line will appear in the output with the script's MIME type.<br>