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chromium/third_party/blink/web_tests/wpt_internal/bluetooth/descriptor/writeValue/gen-io-op-device-reconnects-during-error.https.html 

<!-- Generated by //third_party/blink/web_tests/bluetooth/generate.py -->
<!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 src="/common/gc.js"></script>
<script>
bluetooth_test(
    () => {
      let val = new Uint8Array([1]);
      return setBluetoothFakeAdapter(
                 'DisconnectingDuringFailureGATTOperationAdapter')
          .then(
              () => requestDeviceWithTrustedClick(
                  {filters: [{services: ['health_thermometer']}]}))
          .then(device => device.gatt.connect())
          .then(gatt => gatt.getPrimaryService('health_thermometer'))
          .then(service => service.getCharacteristic('measurement_interval'))
          .then(
              characteristic =>
                  characteristic.getDescriptor(user_description.name))
          .then(descriptor => {
            let disconnected = eventPromise(
                descriptor.characteristic.service.device,
                'gattserverdisconnected');
            let promise = assert_promise_rejects_with_message(
                descriptor.writeValue(val),
                new DOMException(
                  'GATT Server is disconnected. Cannot perform GATT operations. ' +
                    '(Re)connect first with `device.gatt.connect`.',
                    'NetworkError'));
            return disconnected
                .then(
                    () =>
                        descriptor.characteristic.service.device.gatt.connect())
                .then(() => promise);
          });
    },
    'Device reconnects during a writeValue call that fails. Reject ' +
        'with NetworkError.');

</script>