chromium/third_party/blink/web_tests/external/wpt/event-timing/interactionid-auxclick.html

<!DOCTYPE html>
<html>
<meta charset=utf-8 />
<title>Event Timing: interactionId-auxclick.</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'>Right click me to bring up OS level contextmenu popup.</div>

<script>
  const map = new Map();
  const events = ['pointerdown', 'pointerup'];

  promise_test(async t => {
    assert_implements(window.PerformanceEventTiming, 'Event Timing is not supported.');

    const callback = (entryList) => { entryList.getEntries().filter(filterAndAddToMap(events, map)); };
    const readyToResolve = () => { return map.has('pointerup'); };
    const observerPromise = createPerformanceObserverPromise(['event'], callback, readyToResolve);

    await interactAndObserve('auxclick', document.getElementById('target'), observerPromise);

    assert_true(map.has('pointerdown'), 'Pointerdown should be reported.');
    assert_greater_than(map.get('pointerdown'), 0, 'The pointerdown entry should have a non-trivial interactionId');
    assert_equals(map.get('pointerdown'), map.get('pointerup'), 'The pointerdown and the pointerup should have the same interactionId');
  }, "Event Timing: verify pointerdown & pointerup reporting for mouse aux click triggered contextmenu.");

</script>
</html>