mozilla-release/testing/web-platform/tests/beacon/headers/header-referrer-origin-when-cross-origin.html

<!doctype html>
<html>
  <head>
    <meta charset="utf-8">
    <title>SendBeacon Referrer Header Origin When Cross Origin Policy</title>
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>
    <meta name='referrer' content='origin-when-cross-origin'>
  </head>
  <body>
    <script src="/common/utils.js"></script>
    <script src="/common/get-host-info.sub.js"></script>
    <script src="header-referrer.js"></script>
    <script>
      var testBase = get_host_info().HTTP_ORIGIN + RESOURCES_DIR;
      testReferrerHeader(testBase, referrerUrl);
      testBase = get_host_info().HTTP_REMOTE_ORIGIN + RESOURCES_DIR;
      testReferrerHeader(testBase, referrerOrigin);
    </script>
  </body>
</html>