chromium/third_party/blink/web_tests/wpt_internal/vibration/vibration.html

<!DOCTYPE html>
<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>
<h4 id="test">non-empty content to be clicked</h4>
<script type="module">
import {vibration_test} from './resources/vibration-helpers.js';

vibration_test(vibration => {
  assert_true(vibration instanceof Object);
  assert_true(vibration.mockVibrationManager instanceof Object);
}, 'VibrationManager Mojo bindings and mock interfaces are available to tests.');

// Ensure a click has occurred so we can vibrate; but only one is necessary,
// hence the single promise shared among tests.
const click = test_driver.click(document.getElementById('test'));

vibration_test(async vibration => {
  const msgPromise= new Promise(
      resolve => window.addEventListener('message', resolve, {once: true}));
  await click;
  navigator.vibrate(1234);
  const {data}  = await msgPromise;
  assert_equals(data, 'Vibrate');
  assert_equals(vibration.mockVibrationManager.getDuration(), 1234);
  assert_false(vibration.mockVibrationManager.isCancelled());
}, 'navigator.vibrate(1234) triggers vibration correctly.');

vibration_test(async vibration => {
  const msgPromise = new Promise(
      resolve => window.addEventListener('message', resolve, {once: true}));
  await click;
  navigator.vibrate(0);
  const {data} = await msgPromise;
  assert_equals(data, 'Cancel');
  assert_true(vibration.mockVibrationManager.isCancelled());
}, 'navigator.vibrate(0) triggers cancel correctly.');

</script>