<!DOCTYPE html>
<meta charset="utf-8">
<title>Battery Test: navigator.getBattery() always return same battery promise</title>
<link rel="author" title="YuichiNukiyama" href="https://github.com/YuichiNukiyama">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>
<script>
promise_test(function () {
return navigator.getBattery().then(function (result) {
assert_class_string(result, 'BatteryManager',
'getBattery should return BatteryManager Object.');
});
}, 'navigator.getBattery() shall return BatteryManager as a promise');
test(function () {
assert_equals(navigator.getBattery(), navigator.getBattery());
}, 'navigator.getBattery() shall always return the same promise');
</script>