opener-closed.html

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This WPT test may be referenced by the following Test IDs:
- /html/browsers/windows/auxiliary-browsing-contexts/opener-closed.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset="utf-8">

<html>

  <head>

    <title>Auxiliary Browsing Contexts: window.opener when Opener Removed/Closed</title>

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

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

    <script src="/common/PrefixedLocalStorage.js"></script>

  </head>

  <body>

    <div id="log"></div>

    <script>

    var prefixedLocalStorage;

    setup (() => prefixedLocalStorage = new PrefixedLocalStorageTest());

    async_test(t => {

      t.add_cleanup (() => prefixedLocalStorage.cleanup());

      var a       = document.createElement('a');

      a.href      = prefixedLocalStorage.url('resources/open-closer.html');

      a.target    = '_blank';

      prefixedLocalStorage.onSet('openerIsNull', t.step_func_done(e => {

        // The window for this auxiliary browsing context's opener

        // has been closed and discarded, so the aux browsing context

        // should now report `null` for `window.opener`

        assert_equals(e.newValue, 'true');

      }));

      document.body.append(a);

      a.click();

    }, 'An auxiliary browsing context should report `null` for `window.opener` when that browsing context is discarded');

    </script>

  </body>

</html>