| import minimalmodbus | |
| from serial.serialutil import SerialException | |
| # We can't test proper behaviour in emulation, because there is | |
| # actually no emulated modbus hardware, so we rely on the module | |
| # to fail in an expected way to consider it is working correctly. | |
| # Failure (of the script) is success (of the test)! | |
| try: | |
| instrument = minimalmodbus.Instrument('/dev/ttyUSB99', 1) | |
| except SerialException: | |
| pass |