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<!DOCTYPE html>
<html>
<head>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/test-only-api.js"></script>
<script src="resources/battery-status-helpers.js"></script>
</head>
<body>
<script>
function nextEvent(target, name) {
return new Promise(
resolve => target.addEventListener(name, resolve, {once: true}));
}
battery_status_test(async (t, mockBatteryMonitor) => {
mockBatteryMonitor.setBatteryStatus(false, 10, 20, 0.5);
const battery = await navigator.getBattery();
mockBatteryMonitor.verifyBatteryStatus(battery);
const events = Promise.all([
nextEvent(battery, 'chargingchange'),
nextEvent(battery, 'chargingtimechange'),
nextEvent(battery, 'dischargingtimechange'),
nextEvent(battery, 'levelchange'),
]);
t.step_timeout(() => mockBatteryMonitor.setBatteryStatus(true, 11, 22, 0.6));
await events;
mockBatteryMonitor.verifyBatteryStatus(battery);
}, 'event listeners fire as specified');
</script>
</body>
</html>
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