document-exit-fullscreen-nested.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /fullscreen/api/document-exit-fullscreen-nested.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Document#exitFullscreen() for nested fullscreen</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><div></div></div>

<script>

    promise_test(async (t) => {

        const outer = document.querySelector("div");

        const inner = outer.firstChild;

        document.onfullscreenerror = t.unreached_func("fullscreenerror event");

        // First request fullscreen for the outer element.

        await Promise.all([

            fullScreenChange(),

            trusted_request(outer),

]);

        assert_equals(document.fullscreenElement, outer);

        // Then request fullscreen for the inner element.

        const p = trusted_request(inner);

        // Even though we are already in fullscreen, the change in

        // document.fullscreenElement should not happen synchronously.

        assert_equals(document.fullscreenElement, outer);

        await Promise.all([

            fullScreenChange(),

p,

]);

        assert_equals(document.fullscreenElement, inner);

        // Now exit fullscreen.

        const exitP = document.exitFullscreen();

        // Even though we don't need to exit fullscreen, the change in

        // document.fullscreenElement should not happen synchronously.

        assert_equals(document.fullscreenElement, inner);

        await Promise.all([

            exitP,

            fullScreenChange(),

]);

        assert_equals(document.fullscreenElement, outer);

    }, "Exit fullscreen for nested fullscreen");

</script>