gap-pointerdown-pointerup.html

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This WPT test may be referenced by the following Test IDs:
- /event-timing/gap-pointerdown-pointerup.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

<meta charset=utf-8 />

<title>Event Timing: pointerdown/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 pointerDowns = []

    const pointerUps = []

    blockNextEventListener(window, 'pointerdown', 30)

    blockNextEventListener(window, 'pointerup', 30)

    // A keydown is used as an interleaving event, to make sure the pointerdown's

    // timing entry had it's duration set before triggering the pointerup. 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, 'keydown', 30)

    const {promise: interleavingEventTimingEntryObserved, resolve: resolveInterleaving } = Promise.withResolvers();

    new PerformanceObserver( (entries) => {

      entries.getEntries().forEach(  (e) => {

        if (e.name == 'pointerdown')

          pointerDowns.push(e)

        if (e.name =='pointerup')

          pointerUps.push(e)

        if (e.name == 'keydown')

          resolveInterleaving()

})

    }).observe({type: 'event', durationThreshold: 16})

    const pointerDownHandled = new Promise( resolve => window.addEventListener('pointerdown', e => resolve(), true) )

    const pointerUpHandled = new Promise( resolve => window.addEventListener('pointerup', e => resolve(), true) )

    await new test_driver.Actions()

      .pointerMove(0, 0)

      .pointerDown()

      .send()

    await pointerDownHandled

    await afterNextPaint()

    await new test_driver.Actions()

      .keyDown('k')

      .keyUp('k')

      .send()

    await interleavingEventTimingEntryObserved

    const waitStart = performance.now()

    await t.step_wait(() => (performance.now() - waitStart > 50))

    await new test_driver.Actions()

      .pointerUp()

      .send()

    await pointerUpHandled

    await t.step_wait(() => (pointerDowns.length != 0 && pointerUps.length != 0), 'Wait for the event timing entries to be processed.')

    assert_equals(pointerDowns.length, 1)

    assert_equals(pointerUps.length, 1)

    assert_greater_than(pointerUps[0].startTime, pointerDowns[0].startTime + pointerDowns[0].duration)

  }, "pointerdown duration shouldn't wait for pointerup.")

</script>

</html>