lantz
54 lines
1.8 KiB
Python
Executable File
54 lines
1.8 KiB
Python
Executable File
#!/usr/bin/env python
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"""
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Test for simpleperf.py
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"""
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import unittest
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import pexpect
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import re
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import sys
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from mininet.log import setLogLevel
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from mininet.net import Mininet
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from mininet.node import CPULimitedHost
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from mininet.link import TCLink
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from mininet.examples.simpleperf import SingleSwitchTopo
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class testSimplePerf( unittest.TestCase ):
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@unittest.skipIf( '-quick' in sys.argv, 'long test' )
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def testE2E( self ):
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"Run the example and verify ping and iperf results"
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p = pexpect.spawn( 'python -m mininet.examples.simpleperf' )
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# check ping results
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p.expect( "Results: (\d+)% dropped", timeout=120 )
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loss = int( p.match.group( 1 ) )
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self.assertTrue( 0 < loss < 100 )
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# check iperf results
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p.expect( "Results: \['([\d\.]+) .bits/sec", timeout=480 )
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bw = float( p.match.group( 1 ) )
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self.assertTrue( bw > 0 )
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p.wait()
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def testTopo( self ):
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"""Import SingleSwitchTopo from example and test connectivity between two hosts
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Note: this test may fail very rarely because it is non-deterministic
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i.e. links are configured with 10% packet loss, but if we get unlucky and
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none or all of the packets are dropped, the test will fail"""
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topo = SingleSwitchTopo( n=4 )
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net = Mininet( topo=topo, host=CPULimitedHost, link=TCLink )
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net.start()
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h1, h4 = net.get( 'h1', 'h4' )
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# have h1 ping h4 ten times
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expectStr = '(\d+) packets transmitted, (\d+) received, (\d+)% packet loss'
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output = h1.cmd( 'ping -c 10 %s' % h4.IP() )
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m = re.search( expectStr, output )
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loss = int( m.group( 3 ) )
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net.stop()
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self.assertTrue( 0 < loss < 100 )
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if __name__ == '__main__':
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setLogLevel( 'warning' )
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unittest.main()
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