test_bug1773192.html

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<!DOCTYPE HTML>

<html>

<head>

  <meta charset="utf-8">

  <title>Test referrer with going back</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <link rel="stylesheet" href="/tests/SimpleTest/test.css"/>

  <script>

    SimpleTest.waitForExplicitFinish();

    // file_bug1773192_1.html will send a message with some data on pageshow.

    function waitForData(bc) {

      return new Promise(resolve => {

        bc.addEventListener(

          "message",

          ({ data }) => {

            resolve(data);

},

          { once: true }

);

});

    async function runTest() {

      let bc = new BroadcastChannel("bug1743353");

      let getData = waitForData(bc);

      window.open("file_bug1773192_1.html", "", "noreferrer");

      await getData.then(({ referrer }) => {

        is(referrer, "", "Referrer should be empty at first.");

});

      getData = waitForData(bc);

      // When file_bug1773192_1.html receives this message it will navigate to

      // file_bug1773192_2.html. file_bug1773192_2.html removes itself from

      // history with replaceState and submits a form with the POST method to

      // file_bug1773192_3.sjs. file_bug1773192_3.sjs goes back in history.

      // We should end up back at file_bug1773192_1.html, which will send a

      // message with some data on pageshow.

      bc.postMessage("next");

      await getData.then(({ location, referrer }) => {

        let firstURL = new URL("file_bug1773192_1.html", location).toString();

        is(location, firstURL, "Location should be the first page again.");

        is(referrer, firstURL, "Referrer should also be the first page.");

});

      bc.postMessage("close");

      SimpleTest.finish();

  </script>

</head>

<body onload="runTest();">

<p id="display"></p>

<div id="content" style="display: none"></div>

<pre id="test"></pre>

</body>

</html>