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#!/usr/bin/env python
"""
Test for cpu.py
results format:
sched cpu received bits/sec
cfs 50% 8.14e+09
cfs 40% 6.48e+09
cfs 30% 4.56e+09
cfs 20% 2.84e+09
cfs 10% 1.29e+09
"""
import unittest
from mininet.util import pexpect
import sys
class testCPU( unittest.TestCase ):
prompt = 'mininet>'
@unittest.skipIf( '-quick' in sys.argv, 'long test' )
def testCPU( self ):
"Verify that CPU utilization is monotonically decreasing for each scheduler"
p = pexpect.spawn( 'python -m mininet.examples.cpu', timeout=300 )
# matches each line from results( shown above )
opts = [ '([a-z]+)\t([\d\.]+)%\t([\d\.e\+]+)',
pexpect.EOF ]
scheds = []
while True:
index = p.expect( opts )
if index == 0:
sched = p.match.group( 1 )
cpu = float( p.match.group( 2 ) )
bw = float( p.match.group( 3 ) )
if sched not in scheds:
scheds.append( sched )
else:
self.assertTrue( bw < previous_bw,
"%e should be less than %e\n" %
( bw, previous_bw ) )
previous_bw = bw
else:
break
self.assertTrue( len( scheds ) > 0 )
if __name__ == '__main__':
unittest.main()
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