def test_group_all_devices(self):
        dev_id = 'test_entity'
        entity_id = device_tracker.ENTITY_ID_FORMAT.format(dev_id)
        device = device_tracker.Device(
            self.hass, timedelta(seconds=180), 0, True, dev_id, None,
            away_hide=True)
        device_tracker.update_config(self.yaml_devices, dev_id, device)

        scanner = get_component('device_tracker.test').SCANNER
        scanner.reset()

        self.assertTrue(device_tracker.setup(self.hass, {
            device_tracker.DOMAIN: {CONF_PLATFORM: 'test'}}))

        state = self.hass.states.get(device_tracker.ENTITY_ID_ALL_DEVICES)
        self.assertIsNotNone(state)
        self.assertEqual(STATE_NOT_HOME, state.state)
        self.assertSequenceEqual((entity_id,),
                                 state.attributes.get(ATTR_ENTITY_ID))
Get bootconfig, either as full dict or specific value for key.
dataset/ETHPy150Open home-assistant/home-assistant/tests/components/device_tracker/test_init.py/TestComponentsDeviceTracker.test_group_all_devices--crossover with--dataset/ETHPy150Open google/openhtf/openhtf/plugs/usb/fastboot_device.py/FastbootDevice.GetBootconfig