page-visibility.https.html

Enable keyboard shortcuts

This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /battery-status/page-visibility.https.html - WPT Dashboard Interop Dashboard

<!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/testdriver.js"></script>

<script src="/resources/testdriver-vendor.js"></script>

<script src="/page-visibility/resources/window_state_context.js"></script>

<script src="resources/battery-status-helpers.js"></script>

</head>

<body>

<script>

battery_status_test(async (t, mockBatteryMonitor) => {

  mockBatteryMonitor.setBatteryStatus(false, 10, 20, 0.5);

  const battery = await navigator.getBattery();

  mockBatteryMonitor.verifyBatteryStatus(battery);

  const fail = () => { throw new Error('unexpected levelchange event'); };

  battery.addEventListener('levelchange', fail);

  const {minimize, restore} = window_state_context(t);

  await minimize();

  mockBatteryMonitor.setBatteryStatus(false, 10, 20, 0.55);

  battery.removeEventListener('levelchange', fail);

  const change =

      new Promise(resolve => battery.addEventListener('levelchange', resolve));

  await restore();

  mockBatteryMonitor.setBatteryStatus(false, 10, 20, 0.6);

  await change;

  mockBatteryMonitor.verifyBatteryStatus(battery);

}, 'battery status events only fire on visible pages');

</script>

</body>

</html>