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<!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>
<script src="../resources/orientation-event-helpers.js"></script>
<script>
'use strict';

promise_test(async (t) => {
  const helper = new SensorTestHelper(t, 'deviceorientation');
  await helper.grantSensorsPermissions();
  await helper.initializeSensors();

  const orientationData = generateOrientationData(1.1, 2.2, 3.3, false);
  await helper.setData(orientationData);

  return new Promise((resolve, reject) => {
    let result = reject;
    window.addEventListener('deviceorientation', event => result());
    result = resolve;
  });
}, 'Tests that events are never fired synchronously from a call to window.addEventListener().');
</script>