LayoutTests/imported/w3c/web-platform-tests/fetch/nosniff/script.html

<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<div id=log></div>
<script>
  var log = function() {}, // see comment below
      p = function() {}, // see comment below
      fails = [null, "", "x", "x/x", "text/html", "text/json"],
      passes = ["text/javascript", "text/ecmascript", "text/ecmascript;blah", "text/javascript1.0"]

  // Ideally we'd also check whether the scripts in fact execute, but that would involve
  // timers and might get a bit racy without cross-browser support for the execute events.

  const get_url = (mime, outcome) => {
    let url = "resources/js.py"
    if (mime != null) {
        url += "?type=" + encodeURIComponent(mime)
    }
    if (outcome) {
      url += "&outcome=p"
    }
    return url
  }

  fails.forEach(function(mime) {
    async_test(function(t) {
      var script = document.createElement("script")
      script.onerror = t.step_func_done(function(){})
      script.onload = t.unreached_func("Unexpected load event")
      script.src = get_url(mime)
      document.body.appendChild(script)
    }, "URL query: " + mime)
  })

  passes.forEach(function(mime) {
    async_test(function(t) {
      var script = document.createElement("script")
      script.onerror = t.unreached_func("Unexpected error event")
      script.onload = t.step_func_done(function(){})
      script.src = get_url(mime, true)
      document.body.appendChild(script)
    }, "URL query: " + mime)
  })
</script>