send-entity-body-document-bogus.htm

<!doctype html>
<title>XMLHttpRequest: send() - Document with serialization errors</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>
<script>
function serialize(input, output) {
  async_test(t => {
    const client = new XMLHttpRequest
    client.open("POST", "resources/content.py")
    client.send(input)
    client.onload = t.step_func_done(() => {
      assert_equals(client.responseText, output)
    })
  }, "Serializing documents through XMLHttpRequest: '" + output + "'")
}

var doc = document.implementation.createDocument(null, null, null)
serialize(doc, "")
doc.appendChild(doc.createElement("test:test"))
serialize(doc, "<test:test/>")
doc.childNodes[0].setAttribute("test:test", "gee")
serialize(doc, "<test:test test:test=\"gee\"/>")
doc.childNodes[0].setAttribute("x", "\uD800")
serialize(doc, "<test:test test:test=\"gee\" x=\"\uFFFD\"/>")
</script>

chromium/third_party/blink/web_tests/external/wpt/xhr/send-entity-body-document-bogus.htm