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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))
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