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from test.helpers.syscmd import SysCommand
import unittest
import uuid
import serial
import time
class Qserial(unittest.TestCase):
def __init__(self, testname, testfunc, varlist):
super(Qserial, self).__init__(testfunc)
if "port" in varlist:
self.__port = varlist["port"]
else:
raise Exception('port param inside Qserial must be defined')
self.__serial = serial.Serial(self.__port, timeout=1)
if "baudrate" in varlist:
self.__baudrate = varlist["baudrate"]
else:
raise Exception('baudrate param inside Qserial must be defined')
self._testMethodDoc = testname
def __del__(self):
self.__serial.close()
def execute(self):
self.__serial.flushInput()
self.__serial.flushOutput()
#generate a random uuid
test_uuid = str(uuid.uuid4()).encode()
#send the uuid through serial port
self.__serial.write(test_uuid)
time.sleep(0.05) # there might be a small delay
if self.__serial.inWaiting() == 0:
self.fail("failed: PORT {} wait timeout exceded, wrong communication?".format(self.__port))
else:
# check if what it was sent is equal to what has been received
if (self.__serial.readline() != test_uuid):
self.fail("failed: PORT {} write/read mismatch".format(self.__port))
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