document-exit-fullscreen-timing.html (1829B)
1 <!DOCTYPE html> 2 <title>Document#exitFullscreen() timing</title> 3 <script src="/resources/testharness.js"></script> 4 <script src="/resources/testharnessreport.js"></script> 5 <script src="/resources/testdriver.js"></script> 6 <script src="/resources/testdriver-vendor.js"></script> 7 <script src="../trusted-click.js"></script> 8 <div id="log"></div> 9 <script> 10 promise_test(async (t) => { 11 const div = document.querySelector("div"); 12 await trusted_request(div); 13 14 await Promise.all([ 15 new Promise((r) => (document.onfullscreenchange = r)), 16 document.exitFullscreen(), 17 ]); 18 19 // If fullscreenchange is an animation frame event, then animation frame 20 // callbacks should be run after it is fired, before the timer callback. 21 // The resize event should fire before the fullscreenchange event. 22 const events = []; 23 const callback = t.step_func((event) => { 24 // fullscreenElement should have changed before either event is fired. 25 assert_equals( 26 document.fullscreenElement, 27 null, 28 `fullscreenElement in ${event.type} event` 29 ); 30 events.push(event.type); 31 if (event.type == "fullscreenchange") { 32 step_timeout(t.unreached_func("timer callback")); 33 requestAnimationFrame( 34 t.step_func_done(() => { 35 assert_array_equals( 36 events, 37 ["resize", "fullscreenchange"], 38 "event order" 39 ); 40 }) 41 ); 42 } 43 }); 44 document.onfullscreenchange = window.onresize = callback; 45 }, "Timing of fullscreenchange and resize events"); 46 </script>