| <!DOCTYPE html> |
| <title>Document#onfullscreenchange</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> |
| <script> |
| promise_test(async (t) => { |
| const div = document.querySelector("div"); |
| assert_equals( |
| document.onfullscreenchange, |
| null, |
| "initial onfullscreenchange" |
| ); |
| const [, event] = await Promise.all([ |
| trusted_request(div), |
| new Promise((r) => |
| document.addEventListener("fullscreenchange", r) |
| ), |
| ]); |
| assert_true(event instanceof Event); |
| assert_equals(event.target, div); |
| }, "Checks that the fullscreenchange event is fired when entering fullscreen"); |
| </script> |
