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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, '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>
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