import unittest import uuid import serial import time class Qduplex(unittest.TestCase): params = None __port1 = None __port2 = None __baudrate = None # varlist: port1, port2, baudrate def __init__(self, testname, testfunc, varlist): self.params = varlist super(Qduplex, self).__init__(testfunc) if "port1" in varlist: self.__port1 = varlist["port1"] else: raise Exception('port1 param inside Qduplex must be defined') if "port2" in varlist: self.__port2 = varlist["port2"] else: raise Exception('port2 param inside Qduplex must be defined') if "baudrate" in varlist: self.__baudrate = varlist["baudrate"] else: raise Exception('baudrate param inside Qduplex must be defined') self._testMethodDoc = testname # open serial connection self.__serial1 = serial.Serial(self.__port1, self.__baudrate, timeout=1) self.__serial2 = serial.Serial(self.__port2, self.__baudrate, timeout=1) def __del__(self): self.__serial1.close() self.__serial2.close() def execute(self): # generate a random uuid test_uuid = str(uuid.uuid4()).encode() # clean serial ports self.__serial1.flushInput() self.__serial1.flushOutput() self.__serial2.flushInput() self.__serial2.flushOutput() # send the uuid through serial port self.__serial1.write(test_uuid) time.sleep(0.05) # there might be a small delay if self.__serial2.inWaiting() == 0: self.fail("failed: port {} wait timeout exceded".format(self.__port2)) else: if self.__serial2.readline() != test_uuid: self.fail("failed: port {} write/read mismatch".format(self.__port2)) time.sleep(0.05) # there might be a small delay # clean serial ports self.__serial1.flushInput() self.__serial1.flushOutput() self.__serial2.flushInput() self.__serial2.flushOutput() # send the uuid through serial port self.__serial2.write(test_uuid) time.sleep(0.05) # there might be a small delay if self.__serial1.inWaiting() == 0: self.fail("failed: port {} wait timeout exceded".format(self.__port1)) else: if self.__serial1.readline() != test_uuid: self.fail("failed: port {} write/read mismatch".format(self.__port1)) def getresults(self): # resultlist is a python list of python dictionaries resultlist = [] return resultlist