mininet / mininet / test / test_walkthrough.py @ fc2a8fd5
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#!/usr/bin/env python
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"""
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Tests for the Mininet Walkthrough
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TODO: missing xterm test
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"""
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import unittest |
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import pexpect |
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import os |
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from time import sleep |
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from mininet.util import quietRun |
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class testWalkthrough( unittest.TestCase ): |
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prompt = 'mininet>'
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# PART 1
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def testHelp( self ): |
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"Check the usage message"
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p = pexpect.spawn( 'mn -h' )
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index = p.expect( [ 'Usage: mn', pexpect.EOF ] )
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self.assertEqual( index, 0 ) |
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def testWireshark( self ): |
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"Use tshark to test the of dissector"
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tshark = pexpect.spawn( 'tshark -i lo -R of' )
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tshark.expect( 'Capturing on lo' )
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mn = pexpect.spawn( 'mn --test pingall' )
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mn.expect( '0% dropped' )
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tshark.expect( 'OFP 74 Hello' )
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tshark.sendintr() |
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def testBasic( self ): |
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"Test basic CLI commands (help, nodes, net, dump)"
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p = pexpect.spawn( 'mn' )
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p.expect( self.prompt )
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# help command
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p.sendline( 'help' )
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index = p.expect( [ 'commands', self.prompt ] ) |
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self.assertEqual( index, 0, 'No output for "help" command') |
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# nodes command
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p.sendline( 'nodes' )
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p.expect( '([chs]\d ?){4}' )
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nodes = p.match.group( 0 ).split()
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self.assertEqual( len( nodes ), 4, 'No nodes in "nodes" command') |
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p.expect( self.prompt )
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# net command
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p.sendline( 'net' )
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expected = [ x for x in nodes ] |
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while len( expected ) > 0: |
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index = p.expect( expected ) |
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node = p.match.group( 0 )
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expected.remove( node ) |
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p.expect( '\n' )
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self.assertEqual( len( expected ), 0, '"nodes" and "net" differ') |
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p.expect( self.prompt )
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# dump command
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p.sendline( 'dump' )
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expected = [ '<\w+ (%s)' % n for n in nodes ] |
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actual = [] |
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for _ in nodes: |
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index = p.expect( expected ) |
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node = p.match.group( 1 )
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actual.append( node ) |
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p.expect( '\n' )
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self.assertEqual( actual.sort(), nodes.sort(), '"nodes" and "dump" differ' ) |
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p.expect( self.prompt )
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p.sendline( 'exit' )
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p.wait() |
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def testHostCommands( self ): |
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"Test ifconfig and ps on h1 and s1"
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p = pexpect.spawn( 'mn' )
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p.expect( self.prompt )
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interfaces = [ 'h1-eth0', 's1-eth1', '[^-]eth0', 'lo', self.prompt ] |
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# h1 ifconfig
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p.sendline( 'h1 ifconfig -a' )
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ifcount = 0
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while True: |
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index = p.expect( interfaces ) |
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if index == 0 or index == 3: |
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ifcount += 1
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elif index == 1: |
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self.fail( 's1 interface displayed in "h1 ifconfig"' ) |
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elif index == 2: |
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self.fail( 'eth0 displayed in "h1 ifconfig"' ) |
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else:
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break
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self.assertEqual( ifcount, 2, 'Missing interfaces on h1') |
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# s1 ifconfig
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p.sendline( 's1 ifconfig -a' )
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ifcount = 0
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while True: |
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index = p.expect( interfaces ) |
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if index == 0: |
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self.fail( 'h1 interface displayed in "s1 ifconfig"' ) |
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elif index == 1 or index == 2 or index == 3: |
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ifcount += 1
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else:
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break
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self.assertEqual( ifcount, 3, 'Missing interfaces on s1') |
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# h1 ps
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p.sendline( 'h1 ps -a' )
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p.expect( self.prompt )
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h1Output = p.before |
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# s1 ps
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p.sendline( 's1 ps -a' )
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p.expect( self.prompt )
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s1Output = p.before |
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# strip command from ps output
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h1Output = h1Output.split( '\n', 1 )[ 1 ] |
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s1Output = s1Output.split( '\n', 1 )[ 1 ] |
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self.assertEqual( h1Output, s1Output, 'h1 and s1 "ps" output differs') |
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p.sendline( 'exit' )
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p.wait() |
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def testConnectivity( self ): |
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"Test ping and pingall"
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p = pexpect.spawn( 'mn' )
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p.expect( self.prompt )
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p.sendline( 'h1 ping -c 1 h2' )
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p.expect( '1 packets transmitted, 1 received' )
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p.expect( self.prompt )
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p.sendline( 'pingall' )
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p.expect( '0% dropped' )
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p.expect( self.prompt )
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p.sendline( 'exit' )
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p.wait() |
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def testSimpleHTTP( self ): |
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"Start an HTTP server on h1 and wget from h2"
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p = pexpect.spawn( 'mn' )
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p.expect( self.prompt )
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p.sendline( 'h1 python -m SimpleHTTPServer 80 &' )
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p.expect( self.prompt )
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p.sendline( ' h2 wget -O - h1' )
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p.expect( '200 OK' )
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p.expect( self.prompt )
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p.sendline( 'h1 kill %python' )
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p.expect( self.prompt )
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p.sendline( 'exit' )
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p.wait() |
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# PART 2
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def testRegressionRun( self ): |
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"Test pingpair (0% drop) and iperf (bw > 0) regression tests"
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# test pingpair
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p = pexpect.spawn( 'mn --test pingpair' )
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p.expect( '0% dropped' )
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p.expect( pexpect.EOF ) |
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# test iperf
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p = pexpect.spawn( 'mn --test iperf' )
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p.expect( "Results: \['([\d\.]+) .bits/sec'," )
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bw = float( p.match.group( 1 ) ) |
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self.assertTrue( bw > 0 ) |
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p.expect( pexpect.EOF ) |
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def testTopoChange( self ): |
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"Test pingall on single,3 and linear,4 topos"
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# testing single,3
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p = pexpect.spawn( 'mn --test pingall --topo single,3' )
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p.expect( '(\d+)/(\d+) received')
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received = int( p.match.group( 1 ) ) |
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sent = int( p.match.group( 2 ) ) |
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self.assertEqual( sent, 6, 'Wrong number of pings sent in single,3' ) |
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self.assertEqual( sent, received, 'Dropped packets in single,3') |
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p.expect( pexpect.EOF ) |
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# testing linear,4
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p = pexpect.spawn( 'mn --test pingall --topo linear,4' )
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p.expect( '(\d+)/(\d+) received')
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received = int( p.match.group( 1 ) ) |
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sent = int( p.match.group( 2 ) ) |
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self.assertEqual( sent, 12, 'Wrong number of pings sent in linear,4' ) |
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self.assertEqual( sent, received, 'Dropped packets in linear,4') |
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p.expect( pexpect.EOF ) |
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def testLinkChange( self ): |
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"Test TCLink bw and delay"
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p = pexpect.spawn( 'mn --link tc,bw=10,delay=10ms' )
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# test bw
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p.expect( self.prompt )
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p.sendline( 'iperf' )
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p.expect( "Results: \['([\d\.]+) Mbits/sec'," )
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bw = float( p.match.group( 1 ) ) |
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self.assertTrue( bw < 10.1, 'Bandwidth > 10 Mb/s') |
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self.assertTrue( bw > 9.0, 'Bandwidth < 9 Mb/s') |
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p.expect( self.prompt )
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# test delay
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p.sendline( 'h1 ping -c 4 h2' )
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p.expect( 'rtt min/avg/max/mdev = ([\d\.]+)/([\d\.]+)/([\d\.]+)/([\d\.]+) ms' )
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delay = float( p.match.group( 2 ) ) |
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self.assertTrue( delay > 40, 'Delay < 40ms' ) |
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self.assertTrue( delay < 45, 'Delay > 40ms' ) |
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p.expect( self.prompt )
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p.sendline( 'exit' )
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p.wait() |
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def testVerbosity( self ): |
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"Test debug and output verbosity"
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# test output
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p = pexpect.spawn( 'mn -v output' )
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p.expect( self.prompt )
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self.assertEqual( len( p.before ), 0, 'Too much output for "output"' ) |
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p.sendline( 'exit' )
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p.wait() |
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# test debug
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p = pexpect.spawn( 'mn -v debug --test none' )
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p.expect( pexpect.EOF ) |
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lines = p.before.split( '\n' )
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self.assertTrue( len( lines ) > 100, "Debug output is too short" ) |
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def testCustomTopo( self ): |
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"Start Mininet using a custom topo, then run pingall"
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custom = os.path.dirname( os.path.realpath( __file__ ) ) |
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custom = os.path.join( custom, '../../custom/topo-2sw-2host.py' )
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custom = os.path.normpath( custom ) |
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p = pexpect.spawn( 'mn --custom %s --topo mytopo --test pingall' % custom )
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p.expect( '0% dropped' )
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p.expect( pexpect.EOF ) |
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def testStaticMAC( self ): |
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"Verify that MACs are set to easy to read numbers"
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p = pexpect.spawn( 'mn --mac' )
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p.expect( self.prompt )
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for i in range( 1, 3 ): |
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p.sendline( 'h%d ifconfig' % i )
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p.expect( 'HWaddr 00:00:00:00:00:0%d' % i )
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p.expect( self.prompt )
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def testSwitches( self ): |
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"Run iperf test using user and ovsk switches"
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switches = [ 'user', 'ovsk' ] |
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for sw in switches: |
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p = pexpect.spawn( 'mn --switch %s --test iperf' % sw )
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p.expect( "Results: \['([\d\.]+) .bits/sec'," )
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bw = float( p.match.group( 1 ) ) |
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self.assertTrue( bw > 0 ) |
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p.expect( pexpect.EOF ) |
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def testBenchmark( self ): |
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"Run benchmark and verify that it takes less than 2 seconds"
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p = pexpect.spawn( 'mn --test none' )
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p.expect( 'completed in ([\d\.]+) seconds' )
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time = float( p.match.group( 1 ) ) |
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self.assertTrue( time < 2, 'Benchmark takes more than 2 seconds' ) |
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def testOwnNamespace( self ): |
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"Test running user switch in its own namespace"
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p = pexpect.spawn( 'mn --innamespace --switch user' )
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p.expect( self.prompt )
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interfaces = [ 'h1-eth0', 's1-eth1', '[^-]eth0', 'lo', self.prompt ] |
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p.sendline( 's1 ifconfig -a' )
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ifcount = 0
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while True: |
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index = p.expect( interfaces ) |
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if index == 1 or index == 3: |
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ifcount += 1
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elif index == 0: |
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self.fail( 'h1 interface displayed in "s1 ifconfig"' ) |
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elif index == 2: |
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self.fail( 'eth0 displayed in "s1 ifconfig"' ) |
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else:
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break
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self.assertEqual( ifcount, 2, 'Missing interfaces on s1' ) |
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# verify that all hosts a reachable
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p.sendline( 'pingall' )
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p.expect( '(\d+)% dropped' )
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dropped = int( p.match.group( 1 ) ) |
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self.assertEqual( dropped, 0, 'pingall failed') |
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p.expect( self.prompt )
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p.sendline( 'exit' )
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p.wait() |
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# PART 3
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def testPythonInterpreter( self ): |
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"Test py and px by checking IP for h1 and adding h3"
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p = pexpect.spawn( 'mn' )
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p.expect( self.prompt )
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# test host IP
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p.sendline( 'py h1.IP()' )
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p.expect( '10.0.0.1' )
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p.expect( self.prompt )
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# test adding host
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p.sendline( "px net.addHost('h3')" )
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p.expect( self.prompt )
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p.sendline( "px net.addLink(s1, h3)" )
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p.expect( self.prompt )
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p.sendline( 'net' )
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p.expect( 'h3' )
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p.expect( self.prompt )
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p.sendline( 'py h3.MAC()' )
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p.expect( '([a-f0-9]{2}:?){6}' )
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p.expect( self.prompt )
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p.sendline( 'exit' )
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p.wait() |
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def testLink( self ): |
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"Test link CLI command using ping"
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p = pexpect.spawn( 'mn' )
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p.expect( self.prompt )
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p.sendline( 'link s1 h1 down' )
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p.expect( self.prompt )
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p.sendline( 'h1 ping -c 1 h2' )
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p.expect( 'unreachable' )
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p.expect( self.prompt )
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p.sendline( 'link s1 h1 up' )
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p.expect( self.prompt )
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p.sendline( 'h1 ping -c 1 h2' )
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p.expect( '0% packet loss' )
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p.expect( self.prompt )
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p.sendline( 'exit' )
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p.wait() |
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@unittest.skipUnless( os.path.exists( '/tmp/pox' ) or |
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'1 received' in quietRun( 'ping -c 1 github.com' ), |
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'Github is not reachable; cannot download Pox' )
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def testRemoteController( self ): |
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"Test Mininet using Pox controller"
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if not os.path.exists( '/tmp/pox' ): |
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p = pexpect.spawn( 'git clone https://github.com/noxrepo/pox.git /tmp/pox' )
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p.expect( pexpect.EOF ) |
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pox = pexpect.spawn( '/tmp/pox/pox.py forwarding.l2_learning' )
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net = pexpect.spawn( 'mn --controller=remote,ip=127.0.0.1,port=6633 --test pingall' )
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net.expect( '0% dropped' )
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net.expect( pexpect.EOF ) |
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pox.sendintr() |
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pox.wait() |
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if __name__ == '__main__': |
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unittest.main() |