def __init__(self):
    self.serial = serial_mock.Serial(port=constants.ARDUINO_PORT, baudrate=constants.ARDUINO_BAUD, timeout=constants.ARDUINO_TIMEOUT)
    self.volume_in_pump = constants.volume_in_pump
    self.max_pump_capacity = constants.MAX_PUMP_CAPACITY
def __init__(self):
    self.serial = serial_mock.Serial(port=constants.ARDUINO_PORT, baudrate=constants.ARDUINO_BAUD, timeout=constants.ARDUINO_TIMEOUT)
    self.volume_in_pump = constants.volume_in_pump
    self.max_pump_capacity = constants.MAX_PUMP_CAPACITY