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import unittest
from test.helpers.amper import Amper
class Qamper(unittest.TestCase):
params = None
__resultlist = None # resultlist is a python list of python dictionaries
# varlist: undercurrent, overcurrent
def __init__(self, testname, testfunc, varlist):
self.params = varlist
super(Qamper, self).__init__(testfunc)
if "undercurrent" in varlist:
self._undercurrent = varlist["undercurrent"]
else:
raise Exception('undercurrent param inside Qamp must be defined')
if "overcurrent" in varlist:
self._overcurrent = varlist["overcurrent"]
else:
raise Exception('overcurrent param inside Qamp must be defined')
self._testMethodDoc = testname
self.__resultlist = []
def execute(self):
amp = Amper()
# open serial connection
if not amp.open():
self.__resultlist.append(
{
"desc": "Test result",
"data": "FAILED: can not open a serial port",
"type": "string"
}
)
self.fail("Error: can not open a serial port")
# check if the amperimeter is connected and working
# 2 ATTEMTS
if not amp.hello():
if not amp.hello():
self.__resultlist.append(
{
"desc": "Test result",
"data": "FAILED: can not communicate with the amperimeter",
"type": "string"
}
)
self.fail("Error: can not communicate")
# get current value (in Amperes)
current = amp.getCurrent()
# close serial connection
amp.close()
# Check current range
if float(current) > float(self._overcurrent):
# Overcurrent detected
self.__resultlist.append(
{
"desc": "Test result",
"data": "FAILED: Overcurrent detected ( {} A)".format(current),
"type": "string"
}
)
self.fail("failed: Overcurrent detected ( {} )".format(current))
elif float(current) < float(self._undercurrent):
# Undercurrent detected
self.__resultlist.append(
{
"desc": "Test result",
"data": "FAILED: Undercurrent detected ( {} A)".format(current),
"type": "string"
}
)
self.fail("failed: Undercurrent detected ( {} )".format(current))
# Test successful
self.__resultlist.append(
{
"desc": "Test result",
"data": "OK: Current {} A".format(current),
"type": "string"
}
)
def getresults(self):
return self.__resultlist
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