chromium/third_party/blink/web_tests/external/wpt/xhr/send-authentication-existing-session-manual.htm

<!doctype html>
<html>
  <head>
    <title>XMLHttpRequest: send() - "Basic" authenticated requests with user name and password from interactive session</title>
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>
    <script src="/common/utils.js"></script>
    <link rel="help" href="https://xhr.spec.whatwg.org/#the-send()-method" data-tested-assertations="following::code[contains(@title,'http-authorization')]/.." />
  </head>
  <body>
    <p>Please follow these steps to complete the test:</p>
    <script>var user = token();</script>
    <ol>
      <li>Load <a href="resources/auth3/auth.py">page</a> and authenticate with username "<script>document.write(user)</script>" and password "pass"</li>
      <li>Go back</li>
      <li>Click <button onclick="location.href = location.href + '?dotest&user=' + user">complete test</button></li>
    </ol>
    <div id="log"></div>
    <script>
    if (location.search.indexOf('?dotest') != -1) {
      test(function() {
        var user = location.search.slice(location.search.indexOf('&user=') + 6),
          client = new XMLHttpRequest(),
          urlstart = location.host + location.pathname.replace(/\/[^\/]*$/, '/')
        client.open("GET", location.protocol+'//'+urlstart + "resources/auth3/auth.py", false)
        client.send(null)
        assert_equals(client.responseText, user + "\n" + 'pass')
        assert_equals(client.getResponseHeader('x-challenge'), 'DID-NOT')
      }, document.title)
    }
    </script>
  </body>
</html>