reconnect-during.js

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'use strict';

const test_desc = 'disconnect() and connect() called during ' +

    'FUNCTION_NAME. Reject with NetworkError.';

const expected = new DOMException(

    'GATT Server is disconnected. Cannot retrieve characteristics. ' +

    '(Re)connect first with `device.gatt.connect`.',

    'NetworkError');

let device;

bluetooth_test(() => getHealthThermometerDeviceWithServicesDiscovered({

  filters: [{services: [health_thermometer.name]}],

})

    .then(_ => ({device} = _))

    .then(() => device.gatt.getPrimaryService(health_thermometer.name))

    .then(service => Promise.all([

      // 1. Make a call to service.FUNCTION_NAME, while the service is still

      // valid.

      assert_promise_rejects_with_message(service.CALLS([

        getCharacteristic(measurement_interval.name)|

        getCharacteristics()|

        getCharacteristics(measurement_interval.name)[UUID]

      ]), expected),

      // 2. disconnect() and connect before the initial call completes.

      // This is accomplished by making the calls without waiting for the

      // earlier promises to resolve.

      // connect() guarantees on OS-level connection, but disconnect()

      // only disconnects the current instance.

      // getHealthThermometerDeviceWithServicesDiscovered holds another

      // connection in an iframe, so disconnect() and connect() are certain to

      // reconnect.  However, disconnect() will invalidate the service object so

      // the subsequent calls made to it will fail, even after reconnecting.

      device.gatt.disconnect(),

      device.gatt.connect()

    ])),

    test_desc);