File: document-exit-fullscreen-active-document.html

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<!DOCTYPE html>
<title>
    Document#exitFullscreen() when the document is not the active document
</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>
<iframe allowfullscreen></iframe>
<script>
    promise_test(async (t) => {
        const iframe = document.querySelector("iframe");
        const stolenTypeError = iframe.contentWindow.TypeError;
        const documentBeforeNav = iframe.contentDocument;

        await new Promise((resolve) => {
            iframe.onload = resolve;
            iframe.src = "about:blank";
        });

        await promise_rejects_js(
            t,
            stolenTypeError,
            documentBeforeNav.documentElement.requestFullscreen(),
            "Promise should be undefined after navigation"
        );
    });
</script>