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test_multilink.py
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test_multilink.py
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#!/usr/bin/env python
'''
Test for multiple links between nodes
validates mininet interfaces against systems interfaces
'''
import unittest
from mininet.util import pexpect
class testMultiLink( unittest.TestCase ):
prompt = 'mininet>'
def testMultiLink(self):
p = pexpect.spawn( 'python -m mininet.examples.multilink' )
p.expect( self.prompt )
p.sendline( 'intfs' )
p.expect( 's(\d): lo' )
intfsOutput = p.before
# parse interfaces from mininet intfs, and store them in a list
hostToIntfs = intfsOutput.split( '\r\n' )[ 1:3 ]
intfList = []
for hostToIntf in hostToIntfs:
intfList += [ intf for intf in
hostToIntf.split()[1].split(',') ]
# get interfaces from system by running ifconfig on every host
sysIntfList = []
opts = [ 'h(\d)-eth(\d)', self.prompt ]
p.expect( self.prompt )
p.sendline( 'h1 ifconfig' )
while True:
p.expect( opts )
if p.after == self.prompt:
break
sysIntfList.append( p.after )
p.sendline( 'h2 ifconfig' )
while True:
p.expect( opts )
if p.after == self.prompt:
break
sysIntfList.append( p.after )
failMsg = ( 'The systems interfaces and mininet interfaces\n'
'are not the same' )
self.assertEqual( sysIntfList, intfList, msg=failMsg )
p.sendline( 'exit' )
p.wait()
if __name__ == '__main__':
unittest.main()