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import unittest
import sh
import re
class Qethernet(unittest.TestCase):
__serverip = None
__numbytestx = None
__bwexpected = None
__port = None
params = None
# varlist content: serverip, bwexpected, port
def __init__(self, testname, testfunc, varlist):
self.params = varlist
super(Qethernet, self).__init__(testfunc)
if "serverip" in varlist:
self.__serverip = varlist["serverip"]
else:
raise Exception('sip param inside Qethernet have been be defined')
if "bwexpected" in varlist:
self.__bwexpected = varlist["bwexpected"]
else:
raise Exception('bwexpected param inside Qethernet must be defined')
if "port" in varlist:
self.__port = varlist["port"]
else:
raise Exception('port param inside Qethernet must be defined')
self.__numbytestx = "10M"
self._testMethodDoc = testname
def execute(self):
# execute iperf command against the server
try:
p = sh.iperf("-c", self.__serverip, "-x", "CMSV", "-n", self.__numbytestx, "-f", "m", "-p", self.__port,
_timeout=20)
except sh.TimeoutException:
self.fail("failed: iperf timeout reached")
# check if it was executed succesfully
if p.exit_code == 0:
if p.stdout == "":
self.fail("failed: error executing iperf command")
# analyze output string
# split by lines
lines = p.stdout.splitlines()
# get first line
dat = lines[1].decode('ascii')
# search for the BW value
a = re.search("\d+(\.\d)? Mbits/sec", dat)
b = a.group().split()
bwreal = b[0]
# check if BW is in the expected range
self.failUnless(float(bwreal) > float(self.__bwexpected) * 0.9,
"failed: speed is lower than spected. Speed(MB/s)" + str(bwreal))
else:
self.fail("failed: could not complete iperf command")
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