document-exit-fullscreen-nested-in-iframe.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-in-iframe.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Document#exitFullscreen() for nested fullscreen inside an iframe</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>

<iframe allowfullscreen></iframe>

<script>

    promise_test(async (t) => {

        const iframe = document.querySelector("iframe");

        await new Promise((resolve) => {

            iframe.onload = resolve;

            iframe.srcdoc = "<div id='outer'><div id='inner'></div></div>";

});

        const iframeDoc = iframe.contentDocument;

        const outer = iframeDoc.getElementById("outer");

        const inner = iframeDoc.getElementById("inner");

        // First request fullscreen for the outer element.

        await Promise.all([fullScreenChange(), trusted_request(outer)]);

        assert_equals(document.fullscreenElement, iframe);

        assert_equals(iframeDoc.fullscreenElement, outer);

        // Then request fullscreen for the inner element.

        await Promise.all([fullScreenChange(), trusted_request(inner)]);

        assert_equals(document.fullscreenElement, iframe);

        assert_equals(iframeDoc.fullscreenElement, inner);

        // Now exit fullscreen for the iframe's content document.

        await Promise.all([fullScreenChange(), iframeDoc.exitFullscreen()]);

        assert_equals(document.fullscreenElement, null);

        assert_equals(iframeDoc.fullscreenElement, null);

    }, "Exit fullscreen for nested fullscreen inside an iframe");

</script>