| <!DOCTYPE html> |
| <html> |
| <meta charset=utf-8 /> |
| <title>Event Timing: keydown/up gap.</title> |
| <script src=/resources/testharness.js></script> |
| <script src=/resources/testharnessreport.js></script> |
| <script src=/resources/testdriver.js></script> |
| <script src=/resources/testdriver-actions.js></script> |
| <script src=/resources/testdriver-vendor.js></script> |
| <script src=resources/event-timing-test-utils.js></script> |
| <div id='target'>Click me</div> |
| <script> |
| promise_test(async t => { |
| const keyDowns = [] |
| const keyUps = [] |
| blockNextEventListener(window, 'keydown', 30) |
| blockNextEventListener(window, 'keyup', 30) |
| |
| // A pointerdown is used as an interleaving event, to make sure the keydown's |
| // timing entry had it's duration set before triggering the keyup. Using |
| // only `await afterNextPaint()` after the first event is not enough to |
| // guarantee this in all browsers. See discussion in |
| // https://github.com/web-platform-tests/wpt/pull/55577#discussion_r2466579023 |
| blockNextEventListener(window, 'pointerdown', 30) |
| const {promise: interleavingEventTimingEntryObserved, resolve: resolveInterleaving } = Promise.withResolvers(); |
| new PerformanceObserver( (entries) => { |
| entries.getEntries().forEach( (e) => { |
| if (e.name == 'keydown') |
| keyDowns.push(e) |
| if (e.name =='keyup') |
| keyUps.push(e) |
| if (e.name == 'pointerdown') |
| resolveInterleaving() |
| }) |
| }).observe({type: 'event', durationThreshold: 16}) |
| const keyDownHandled = new Promise( resolve => window.addEventListener('keydown', e => resolve(), true) ) |
| const keyUpHandled = new Promise( resolve => window.addEventListener('keyup', e => resolve(), true) ) |
| |
| await new test_driver.Actions() |
| .keyDown('a') |
| .send() |
| await keyDownHandled |
| await afterNextPaint() |
| await new test_driver.Actions() |
| .pointerMove(0, 0) |
| .pointerDown() |
| .pointerUp() |
| .send() |
| await interleavingEventTimingEntryObserved |
| const waitStart = performance.now() |
| await t.step_wait(() => (performance.now() - waitStart > 50)) |
| await new test_driver.Actions() |
| .keyUp('a') |
| .send() |
| await keyUpHandled |
| await t.step_wait(() => (keyDowns.length != 0 && keyUps.length != 0), 'Wait for the event timing entries to be processed.') |
| assert_equals(keyDowns.length, 1) |
| assert_equals(keyUps.length, 1) |
| assert_greater_than(keyUps[0].startTime, keyDowns[0].startTime + keyDowns[0].duration) |
| }, "keydown duration shouldn't wait for keyup.") |
| </script> |
| </html> |
