add-during-dispatch.https.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /orientation-event/motion/add-during-dispatch.https.html - WPT Dashboard Interop Dashboard

<!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, 'devicemotion');

  await helper.grantSensorsPermissions();

  await helper.initializeSensors();

  const motionData = generateMotionData(1, 2, 3,

                                        4, 5, 6,

                                        7, 8, 9);

  await helper.setData(motionData);

  return new Promise((resolve, reject) => {

    let result = reject;

    window.addEventListener('devicemotion', event1 => {

      // Now we are in event dispatch.

      assertEventEquals(event1, getExpectedMotionEvent(motionData));

      window.addEventListener('devicemotion', event2 => {

        // Not called until the outer function returns.

        assertEventEquals(event2, getExpectedMotionEvent(motionData));

        result();

      }, {once: true});

      result = resolve;

    }, {once: true});

});

}, 'Test no fire listeners added during event dispatch.');

</script>