fullscreen/api/element-request-fullscreen-namespaces.html

<!DOCTYPE html>
<title>Element#requestFullscreen() for an element in null namespace</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>
<script>
    const supportedNS = [
        { ns: "http://www.w3.org/1999/xhtml", elemName: "div" },
        { ns: "http://www.w3.org/2000/svg", elemName: "svg" },
        { ns: "http://www.w3.org/1998/Math/MathML", elemName: "math" },
    ];

    const unsupportedNS = [null, "https://unknown.namespace", ""];

    for (const ns of unsupportedNS) {
        promise_test(async (t) => {
            const element = document.createElementNS(ns, "element");
            document.body.appendChild(element);
            document.onfullscreenchange = t.unreached_func(
                "fullscreenchange event"
            );
            await promise_rejects_js(t, TypeError, trusted_request(element));
        }, `requestFullscreen() fails for an element in ${ns} namespace`);
    }

    for (const { ns, elemName } of supportedNS) {
        promise_test(async (t) => {
            const element = document.createElementNS(ns, elemName);
            document.body.appendChild(element);
            await Promise.all([trusted_request(element), fullScreenChange()]);
            await document.exitFullscreen();
        }, `requestFullscreen() succeed for an element in ${ns} namespace`);
    }
</script>