test_storage_copied.html

Enable keyboard shortcuts

<!DOCTYPE HTML>

<html>

<!--

Test sessionStorage is copied over when a new window opens to the

same domain as the opener.

-->

<head>

  <meta charset="utf-8">

  <title>Test storage copied</title>

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

  <script src="head.js" type="application/javascript"></script>

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

</head>

<body>

  <script type="application/javascript">

    "use strict";

    function waitForMessage(win) {

      return new Promise(resolve => {

        win.addEventListener("message", function(event) {

          resolve(event.data);

        }, {once: true});

});

    add_task(async function() {

      const TEST_VALUE = "test-value";

      // This magic value of 2 means that by default, when content tries

      // to open a new window, it'll actually open in a new window instead

      // of a new tab.

      await SpecialPowers.pushPrefEnv({"set": [

        ["browser.link.open_newwindow", 2],

      ]});

      window.sessionStorage.setItem("test-item", TEST_VALUE);

      let win = window.open("file_storage_copied.html", "my_window");

      let data = await waitForMessage(win);

      is(data, TEST_VALUE, "Should have cloned the test value");

      win.close();

});

  </script>

</body>

</html>