| <!DOCTYPE html> |
| <title>Element#requestFullscreen() for dialog element</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> |
| <div id="log"></div> |
| <dialog></dialog> |
| <script> |
| promise_test(async (t) => { |
| const dialog = document.querySelector("dialog"); |
| assert_true(dialog instanceof HTMLDialogElement); |
| document.onfullscreenchange = t.unreached_func( |
| "fullscreenchange event" |
| ); |
| const errorEventPromise = new Promise( |
| (resolve) => (document.onfullscreenerror = resolve) |
| ); |
| Promise.all([ |
| promise_rejects_js(t, TypeError, dialog.requestFullscreen()), |
| errorEventPromise, |
| ]); |
| }); |
| </script> |
