device-goes-out-of-range.https.html

<!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="/bluetooth/resources/bluetooth-test.js"></script>
<script src="/bluetooth/resources/bluetooth-fake-devices.js"></script>
<script>
'use strict';
bluetooth_test(() => {
  return setBluetoothFakeAdapter('HeartRateAdapter')
    .then(() => requestDeviceWithTrustedClick({
      filters: [{services: ['heart_rate']}]}))
    .then(device => device.gatt.connect())
    .then(gattServer => gattServer.getPrimaryService('heart_rate'))
    .then(service => service.getCharacteristic('heart_rate_measurement'))
    .then(characteristic => {
      return setBluetoothFakeAdapter('EmptyAdapter')
        .then(() => assert_promise_rejects_with_message(
          characteristic.startNotifications(),
          new DOMException(
            'Bluetooth Device is no longer in range.', 'NetworkError'),
          'Device went out of range.'));
    });
}, 'Device goes out of range. Reject with NetworkError.');
</script>

chromium/third_party/blink/web_tests/wpt_internal/bluetooth/characteristic/notifications/device-goes-out-of-range.https.html