test.js

...
test(peripheral) {
    if (peripheral) {
      if (peripheral.connected) {
        BleManager.disconnect(peripheral.id);
      } else {
        BleManager.connect(peripheral.id)
          .then(() => {
            let peripherals = this.state.peripherals;
            let p = peripherals.get(peripheral.id);
            this.setState({connectedTo: peripheral.name});
            if (p) {
              p.connected = true;
              this.setState({peripheral});
              peripherals.set(peripheral.id, p);
              this.setState({peripherals});
            }
            console.log('Connected to ' + peripheral.id);

            console.log('Starting to retreive all services');
            BleManager.retrieveServices(peripheral.id).then(() => {
              BleManager.readRSSI(peripheral.id).then(rssi => {
                console.log('Retrieved actual RSSI value', rssi);
                this.setState({rssi: rssi});
              });
            });
            BleManager.createBond(peripheral.id)
              .then(() => {
                console.log(
                  'createBond success or there is already an existing one',
                );
              })
              .catch(() => {
                console.log('fail to bond');
              });
            this.handleBattery(peripheral);
            this.handleDeviceInfo(peripheral);
            this.handlePedometerStats(peripheral);
            this.getHeartRate(peripheral);
          })
          .catch(error => {
            console.log('Connection error', error);
          });
      }
    }
  }
  ...