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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(1.1, 2.1, 3.1,
1.2, 2.2, 3.2,
1.3, 2.3, 3.3);
let firstListener = null;
let secondListener = null;
let firstEventCount = 0;
let firstPromise = new Promise(resolve => {
firstListener = (event) => {
assert_true(event instanceof DeviceMotionEvent, 'event is DeviceMotionEvent');
assert_equals(event.type, 'devicemotion', 'event.type is devicemotion');
assert_true(event.target instanceof Window, 'event is fired on the window object');
assertEventEquals(event, getExpectedMotionEvent(motionData));
window.removeEventListener('devicemotion', firstListener);
if (++firstEventCount == 1) {
window.addEventListener('devicemotion', secondListener);
}
resolve(event);
};
});
let secondEventCount = 0;
let secondPromise = new Promise(resolve => {
secondListener = (event) => {
assertEventEquals(event, getExpectedMotionEvent(motionData));
window.removeEventListener('devicemotion', secondListener);
++secondEventCount;
resolve(event);
};
});
await helper.setData(motionData);
window.addEventListener('devicemotion', firstListener);
await firstPromise;
await secondPromise;
assert_equals(firstEventCount, 1, "Too many events fired for the first listener");
assert_equals(secondEventCount, 1, "Too many events fired for the second listener");
}, 'Tests that adding a new devicemotion event listener from a callback works as expected.');
</script>
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