| <!DOCTYPE html> |
| <title>Document#onfullscreenerror</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <div id="log"></div> |
| <script> |
| promise_test(async (t) => { |
| assert_equals( |
| document.onfullscreenerror, |
| null, |
| "initial onfullscreenerror" |
| ); |
| const [, event] = await Promise.all([ |
| promise_rejects_js( |
| t, |
| TypeError, |
| document.documentElement.requestFullscreen() |
| ), |
| new Promise((r) => document.addEventListener("fullscreenerror", r)), |
| ]); |
| assert_equals(event.target, document.documentElement); |
| assert_true(event instanceof Event); |
| }, "Checks that the fullscreenerror event is fired when entering fullscreen fails"); |
| </script> |
