element-request-fullscreen-and-move.html

<!DOCTYPE html>
<title>
    Element#requestFullscreen() followed by moving the element within the
    document
</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="../trusted-click.js"></script>
<div id="log"></div>
<div id="target"></div>
<div id="moveto"></div>
<script>
    promise_test(async (t) => {
        document.onfullscreenerror = t.unreached_func("fullscreenerror event");
        const target = document.getElementById("target");
        const moveTo = document.getElementById("moveto");
        await trusted_click(document.body);
        const p = target.requestFullscreen();
        moveTo.appendChild(target);
        await Promise.all([p, fullScreenChange()]);
        assert_equals(document.fullscreenElement, target);
        assert_equals(target.parentNode, moveTo);
    }, "Element#requestFullscreen() followed by moving the element within the document");
</script>

chromium/third_party/blink/web_tests/external/wpt/fullscreen/api/element-request-fullscreen-and-move.html