<!DOCTYPE html> <title> Element#requestFullscreen() in iframe followed by removing the 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> <div id="log"></div> <iframe allowfullscreen></iframe> <script> promise_test(async (t) => { const iframe = document.querySelector("iframe"); await new Promise((resolve) => { iframe.onload = resolve; iframe.src = "about:blank"; }); const iframeDocument = iframe.contentDocument; document.onfullscreenchange = t.unreached_func( "fullscreenchange event" ); document.onfullscreenerror = t.unreached_func("fullscreenerror event"); iframeDocument.onfullscreenchange = t.unreached_func( "iframe fullscreenchange event" ); iframeDocument.onfullscreenerror = t.unreached_func( "iframe fullscreenerror event" ); await trusted_click(document.body); const p = iframeDocument.body.requestFullscreen(); const typeErrorConstructor = iframe.contentWindow.TypeError; iframe.remove(); // Prevent the tests from hanging if the promise never rejects. const errorPromise = new Promise((_, reject) => t.step_timeout(() => { assert_unreached("Promise didn't reject."); reject(new Error("Promise didn't reject.")); }, 1000) ); await Promise.race([ promise_rejects_js(t, typeErrorConstructor, p), errorPromise, ]); assert_equals(document.fullscreenElement, null); assert_equals(iframeDocument.fullscreenElement, null); }, "requestFullscreen() in iframe followed by removing the iframe"); </script>