workers.html - mozsearch

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This WPT test may be referenced by the following Test IDs:
- /referrer-policy/generic/inheritance/workers.html - WPT Dashboard Interop Dashboard

<html>

  <head>

    <title>Referrer Policy: local scheme workers inherit from creator</title>

    <script src="/resources/testharness.js"></script>

    <script src="/resources/testharnessreport.js"></script>

    <script src="/common/get-host-info.sub.js"></script>

    <meta name="referrer" content="no-referrer">

  </head>

  <script>

    let cross_origin = get_host_info().REMOTE_ORIGIN;

    let generateFetchString = postmessage => `

      fetch("${cross_origin}/common/security-features/subresource/xhr.py",

            {referrer: "${location.href}/custom"})

          .then(r => r.json())

          .then(j => ${postmessage}({referrer: j.headers.referer}))

          .catch(e => ${postmessage}({referrer: "FAILURE"}));`

    async_test(t => {

      let blob = new Blob([generateFetchString("postMessage")],

                          {type : 'application/javascript'});

      let blob_url = URL.createObjectURL(blob);

      let worker = new Worker(blob_url);

      worker.onmessage = t.step_func_done(msg => {

        assert_equals(msg.data.referrer, undefined);

});

    }, "Dedicated worker with local scheme inherits referrer policy " +

               "from the creating document.");

    async_test(t => {

      let script = `

        onconnect = e => {

          let port = e.ports[0];

          port.start();

          ${generateFetchString("port.postMessage")}

};`

      let blob = new Blob([script], {type : 'application/javascript'});

      let blob_url = URL.createObjectURL(blob);

      let shared_worker = new SharedWorker(blob_url);

      shared_worker.port.start();

      shared_worker.port.onmessage = t.step_func_done(msg => {

        assert_equals(msg.data.referrer, undefined);

});

    }, "Shared worker with local scheme inherits referrer policy " +

               "from the creating document.");

  </script>

</html>