LayoutTests/fast/dom/Window/resources/dom-access-from-closure-window-child.html

<script>
    const opener = window.opener; // Save opener as the window will be detached when accessFrame() is called.

    opener.accessFrame = function()
    {
        function normalizeURL(url)
        {
            return url.substring(url.lastIndexOf("LayoutTests"));
        }

        try {
            opener.log("document.URL: " + normalizeURL(document.URL));
            opener.log("window.document.URL: " + normalizeURL(window.document.URL));
            opener.log("name: " + name);
            opener.log("window.name: " + window.name);
        } catch (e) {
            opener.log("An exception was thrown: " + e.message);
        }
    }

    window.location = "notify-opener-done.html";
</script>