adding first draft of tests for all examples, they need comments and clean up, some could be made more rebust

2013-09-11 14:45:46 -07:00
parent 5a646a0d20
commit a46fae0687
20 changed files with 914 additions and 0 deletions
@@ -0,0 +1,10 @@
+import glob
+import unittest
+
+test_file_strings = glob.glob('test_*.py')
+module_strings = [str[0:len(str)-3] for str in test_file_strings]
+print module_strings
+suites = [unittest.defaultTestLoader.loadTestsFromName(str) for str
+          in module_strings]
+testSuite = unittest.TestSuite(suites)
+text_runner = unittest.TextTestRunner().run(testSuite)
@@ -0,0 +1,60 @@
+#!/usr/bin/env python
+
+"""TEST"""
+
+import unittest
+import pexpect
+from time import sleep
+from mininet.log import setLogLevel
+from mininet.clean import cleanup, sh
+
+class testBareSSHD( unittest.TestCase ):
+    "Test ping with single switch topology (common code)."
+
+    opts = [ '\(yes/no\)\?', 'Welcome to h1', 'refused', pexpect.EOF, pexpect.TIMEOUT ]
+
+    def connected( self ):
+        "check connected"
+        p = pexpect.spawn( 'ssh 10.0.0.1 -i /tmp/ssh/test_rsa ' )
+        while True:
+            index = p.expect( self.opts )
+            if index == 0:
+                p.sendline( 'yes' )
+            elif index == 1:
+                return True
+            else:
+                return False
+
+    def setUp( self ):
+        self.assertFalse( self.connected() )
+        # create public key pair for testing
+        sh( 'mkdir /tmp/ssh' )
+        sh( "ssh-keygen -t rsa -P '' -f /tmp/ssh/test_rsa" )
+        sh( 'cat /tmp/ssh/test_rsa.pub >> /tmp/ssh/authorized_keys' )
+        cmd = ( 'python -m mininet.examples.baresshd '
+                '-o AuthorizedKeysFile=/tmp/ssh/authorized_keys '
+                '-o StrictModes=no' )
+        sh( cmd )
+
+    def testSSH( self ):
+        result = False
+        # try to connect up to 3 times
+        for _ in range( 3 ):
+            result = self.connected()
+            if result:
+                break
+            else:
+                sleep( 1 )
+        self.assertTrue( result )
+
+    def tearDown( self ):
+        # kill the ssh process
+        sh( "ps aux | grep 'ssh.*Banner' | awk '{ print $2 }' | xargs kill" )
+        cleanup()
+        # remove public key pair
+        sh( 'rm -rf /tmp/ssh' )
+
+
+if __name__ == '__main__':
+    setLogLevel( 'warning' )
+    unittest.main()
@@ -0,0 +1,59 @@
+#!/usr/bin/env python
+
+"""TEST"""
+
+import unittest
+import pexpect
+from time import sleep
+from mininet.log import setLogLevel
+from mininet.clean import cleanup, sh
+
+class testBind( unittest.TestCase ):
+    "Test ping with single switch topology (common code)."
+
+    prompt = 'mininet>'
+
+    def connected( self, ip ):
+        "check connected"
+        p = pexpect.spawn( 'ssh -i /tmp/ssh/test_rsa %s' % ip )
+        while True:
+            index = p.expect( self.opts )
+            if index == 0:
+                print p.match.group(0)
+                p.sendline( 'yes' )
+            elif index == 1:
+                return False
+            elif index == 2:
+                p.sendline( 'exit' )
+                p.wait()    
+                return True
+            else:
+                return False
+
+    def setUp( self ):
+        self.net = pexpect.spawn( 'python -m mininet.examples.bind' )
+        self.net.expect( "Private Directories: \[([\w\s,'/]+)\]" )
+        self.directories = []
+        # parse directories from mn output
+        for d in self.net.match.group(1).split(', '):
+            self.directories.append( d.strip("'") )
+        self.net.expect( self.prompt )
+        self.assertTrue( len( self.directories ) > 0 )
+
+    def testCreateFile( self ):
+        fileName = 'a.txt'
+        directory = self.directories[ 0 ]
+        self.net.sendline( 'h1 touch %s/%s; ls %s' % ( directory, fileName, directory ) )
+        index = self.net.expect( [ fileName, self.prompt ] )
+        self.assertTrue( index == 0 )
+
+    # TODO: need more tests
+
+    def tearDown( self ):
+        self.net.sendline( 'exit' )
+        self.net.wait()
+
+if __name__ == '__main__':
+    setLogLevel( 'warning' )
+    unittest.main()
+
@@ -0,0 +1,55 @@
+#!/usr/bin/env python
+
+"""TEST"""
+
+import unittest
+import pexpect
+#from time import sleep
+from mininet.log import setLogLevel
+#from mininet.net import Mininet
+#from mininet.node import CPULimitedHost
+#from mininet.link import TCLink
+
+#from mininet.examples.simpleperf import SingleSwitchTopo
+
+class testControllers( unittest.TestCase ):
+    "Test ping with single switch topology (common code)."
+
+    prompt = 'mininet>'
+
+    def connectedTest( self, name, cmap ):
+        p = pexpect.spawn( 'python -m %s' % name )
+        p.expect( self.prompt )
+        p.sendline( 'pingall' )
+        p.expect ( '(\d+)% dropped' )
+        percent = int( p.match.group( 1 ) ) if p.match else -1
+        self.assertEqual( percent, 0 ) # or this
+        p.expect( self.prompt )
+        for switch in cmap:
+            p.sendline( 'sh ovs-vsctl get-controller %s' % switch )
+            p.expect( 'tcp:([\d.:]+)')
+            actual = p.match.group(1)
+            expected = cmap[ switch ]
+            self.assertEqual( actual, expected)
+        p.expect( self.prompt )
+        p.sendline( 'exit' )
+        p.wait()
+        #TODO remove this
+        self.assertEqual( percent, 0 )
+
+    def testControllers( self ):
+        c0 = '127.0.0.1:6633'
+        c1 = '127.0.0.1:6634'
+        cmap = { 's1': c0, 's2': c1, 's3': c0 }
+        self.connectedTest( 'mininet.examples.controllers', cmap )
+
+    def testControllers2( self ):
+        c0 = '127.0.0.1:6633'
+        c1 = '127.0.0.1:6634'
+        cmap = { 's1': c0, 's2': c1 }
+        self.connectedTest( 'mininet.examples.controllers2', cmap )
+
+
+if __name__ == '__main__':
+    setLogLevel( 'warning' )
+    unittest.main()
@@ -0,0 +1,51 @@
+#!/usr/bin/env python
+
+"""TEST"""
+
+import unittest
+import pexpect
+from mininet.log import setLogLevel
+#from mininet.net import Mininet
+#from mininet.node import CPULimitedHost
+#from mininet.link import TCLink
+
+#from mininet.examples.simpleperf import SingleSwitchTopo
+
+class testControlNet( unittest.TestCase ):
+    "Test ping with single switch topology (common code)."
+
+    prompt = 'mininet>'
+
+    def testPingall( self ):
+        p = pexpect.spawn( 'python -m mininet.examples.controlnet' )
+        p.expect( self.prompt )
+        p.sendline( 'pingall' )
+        p.expect ( '(\d+)% dropped' )
+        percent = int( p.match.group( 1 ) ) if p.match else -1
+        self.assertEqual( percent, 0 )
+        p.expect( self.prompt )
+        p.sendline( 'exit' )
+        p.wait()
+
+    def testFailover( self ):
+        count = 1
+        p = pexpect.spawn( 'python -m mininet.examples.controlnet' )
+        p.expect( self.prompt )
+        lp = pexpect.spawn( 'tail -f /tmp/s1-ofp.log' )
+        lp.expect( 'tcp:\d+\.\d+\.\d+\.(\d+):\d+: connected' )
+        ip = int( lp.match.group( 1 ) )
+        self.assertEqual( count, ip )
+        count += 1
+        for c in [ 'c0', 'c1' ]:
+            p.sendline( '%s ifconfig %s-eth0 down' % ( c, c) )
+            p.expect( self.prompt )
+            lp.expect( 'tcp:\d+\.\d+\.\d+\.(\d+):\d+: connected' )
+            ip = int( lp.match.group( 1 ) )
+            self.assertEqual( count, ip )
+            count += 1
+        p.sendline( 'exit' )
+        p.wait()
+
+if __name__ == '__main__':
+    setLogLevel( 'warning' )
+    unittest.main()
@@ -0,0 +1,36 @@
+#!/usr/bin/env python
+
+"""TEST"""
+
+import unittest
+import pexpect
+from mininet.log import setLogLevel
+
+class testCPU( unittest.TestCase ):
+    "Test ping with single switch topology (common code)."
+
+    prompt = 'mininet>'
+
+    def testCPU( self ):
+        opts = [ '([a-z]+)\t([\d\.]+)%\t([\d\.]+)', pexpect.EOF ]
+        p = pexpect.spawn( 'python -m mininet.examples.cpu' )
+        scheds = []
+        while True:
+            index = p.expect( opts, timeout=600 )
+            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 )
+                    previous_bw = 10 ** 4 # 10 GB/s
+                self.assertTrue( bw < previous_bw )
+                previous_bw = bw
+            else:
+                break
+
+        self.assertTrue( len( scheds ) > 0 )
+
+if __name__ == '__main__':
+    setLogLevel( 'warning' )
+    unittest.main()
@@ -0,0 +1,39 @@
+#!/usr/bin/env python
+
+"""TEST"""
+
+import unittest
+import pexpect
+#from time import sleep
+from mininet.log import setLogLevel
+#from mininet.net import Mininet
+#from mininet.node import CPULimitedHost
+#from mininet.link import TCLink
+
+#from mininet.examples.simpleperf import SingleSwitchTopo
+
+class testEmptyNet( unittest.TestCase ):
+    "Test ping with single switch topology (common code)."
+
+    prompt = 'mininet>'
+
+    def testEmptyNet( self ):
+        p = pexpect.spawn( 'python -m mininet.examples.emptynet' )
+        p.expect( self.prompt )
+        p.sendline( 'pingall' )
+        p.expect ( '(\d+)% dropped' )
+        percent = int( p.match.group( 1 ) ) if p.match else -1
+        self.assertEqual( percent, 0 ) # or this
+        p.expect( self.prompt )
+        p.sendline( 'iperf' )
+        p.expect( "Results: \['[\d.]+ .bits/sec', '[\d.]+ .bits/sec'\]" )
+        #TODO check the results? maybe we dont care
+        p.expect( self.prompt )
+        p.sendline( 'exit' )
+        p.wait()
+        #TODO remove this
+        self.assertEqual( percent, 0 )
+
+if __name__ == '__main__':
+    setLogLevel( 'warning' )
+    unittest.main()
@@ -0,0 +1,113 @@
+#!/usr/bin/env python
+
+"""TEST"""
+
+import unittest
+import pexpect
+import re
+from time import sleep
+from mininet.log import setLogLevel
+from mininet.net import Mininet
+from mininet.node import Node
+from mininet.link import Link, Intf
+
+class testHwintf( unittest.TestCase ):
+    "Test ping with single switch topology (common code)."
+
+    prompt = 'mininet>'
+
+    def _testE2E( self ):
+        results = [ "Results:", pexpect.EOF, pexpect.TIMEOUT ]
+        p = pexpect.spawn( 'python -m mininet.examples.simpleperf' )
+        index = p.expect( results, timeout=600 )
+        self.assertEqual( index, 0 )
+        p.wait()
+
+    def setUp( self ):
+        self.h3 = Node( 't0', ip='10.0.0.3/8' )
+        self.n0 = Node( 't1', inNamespace=False)
+        Link( self.h3, self.n0 )
+        self.h3.configDefault()
+
+    def testLocalPing( self ):
+        p = pexpect.spawn( 'python -m mininet.examples.hwintf %s' % self.n0.intf() )
+        p.expect( self.prompt )
+        p.sendline( 'pingall' )
+        p.expect ( '(\d+)% dropped' )
+        percent = int( p.match.group( 1 ) ) if p.match else -1
+        self.assertEqual( percent, 0 )
+        p.expect( self.prompt )
+        p.sendline( 'exit' )
+        p.wait()
+
+    def testExternalPing( self ):
+        expectStr = '(\d+) packets transmitted, (\d+) received'
+        p = pexpect.spawn( 'python -m mininet.examples.hwintf %s' % self.n0.intf() )
+        p.expect( self.prompt )
+
+        m = re.search( expectStr, self.h3.cmd( 'ping -v -c 1 10.0.0.1' ) )
+        tx = m.group( 1 )
+        rx = m.group( 2 )
+        self.assertEqual( tx, rx )
+
+        p.sendline( 'h1 ping -c 1 10.0.0.3')
+        p.expect( expectStr )
+        tx = p.match.group( 1 )
+        rx = p.match.group( 2 )
+        self.assertEqual( tx, rx )
+        p.expect( self.prompt )
+        p.sendline( 'exit' )
+        p.wait()
+
+    def tearDown( self ):
+        self.h3.terminate()
+        self.n0.terminate()
+
+
+            
+    ''' TAP garbage 
+     def testHwintf( self ):
+        ifname = 'br3'
+        #sudo ip tuntap add mode tap br0
+        #sudo ip tuntap del mode tap br0
+        #sudo ip link add name test0 type veth peer name test1
+        #sudo ip link del test0
+        t0 = Node( 't0', inNamespace=False, ip='10.0.0.3/8' )
+
+        t1 = Node( 't1', inNamespace=False)
+        #t0.cmd( 'ip tuntap add mode tap %s' % ifname )
+        #Intf( ifname, t0 )
+        print Link( t0, t1 )
+        t0.configDefault()
+
+        print t0.cmd( 'ifconfig' )
+        ifname =  t1.intf()
+
+
+        try:
+            foo = pexpect.spawn( 'wireshark' )
+            p = pexpect.spawn( 'python -m mininet.examples.hwintf %s' % ifname )
+            p.expect( self.prompt )
+            #t0.cmd( 'ip link set dev %s up' % ifname )
+            #t0.cmd( "bash -c 'echo 1 > /proc/sys/net/ipv4/ip_forward'" )
+            #t0.cmd( "bash -c 'echo 1 > /proc/sys/net/ipv4/conf/%s/proxy_arp'" % ifname)
+            #t0.cmd( 'arp -Ds 10.0.0.3 s1 pub' )
+
+            #p.sendline( 'x s1 wireshark' )
+            print t0.cmd( 'ifconfig %s' % ifname )
+            print t0.cmd( 'ip route' )
+            print t0.cmd( 'ping -v -c 1 10.0.0.3' )
+            print t0.cmd( 'ping -v -c 1 10.0.0.1' )
+
+            p.interact()
+            #p.wait()
+        finally:
+            #t0.cmd( 'ip tuntap del mode tap %s' % ifname )
+            t0.terminate()
+            t1.terminate()
+        #t0.configDefault()
+    '''
+
+if __name__ == '__main__':
+    setLogLevel( 'warning' )
+    unittest.main()
@@ -0,0 +1,38 @@
+#!/usr/bin/env python
+
+"""TEST"""
+
+import unittest
+import pexpect
+from mininet.log import setLogLevel
+
+class testLimit( unittest.TestCase ):
+    "Test ping with single switch topology (common code)."
+
+    def testLimit( self ):
+        opts = [ '\*\*\* Testing network ([\d\.]+) Mbps', 
+                 '\*\*\* Results: \[([\d\., ]+)\]', 
+                 pexpect.EOF ]
+        p = pexpect.spawn( 'python -m mininet.examples.limit' )
+        count = 0
+        bw = 0
+        tolerance = 1
+        while True:
+            index = p.expect( opts )
+            if index == 0:
+                bw = float( p.match.group( 1 ) )
+                count += 1
+            elif index == 1:
+                results = p.match.group( 1 )
+                for x in results.split(','):
+                    result = float( x )
+                    self.assertTrue( result < bw + tolerance )
+                    self.assertTrue( result > bw - tolerance)
+            else:
+                break
+
+        self.assertTrue( count > 0 )
+
+if __name__ == '__main__':
+    setLogLevel( 'warning' )
+    unittest.main()
@@ -0,0 +1,48 @@
+#!/usr/bin/env python
+
+"""TEST"""
+
+import unittest
+import pexpect
+from mininet.log import setLogLevel
+#from mininet.net import Mininet
+#from mininet.node import CPULimitedHost
+#from mininet.link import TCLink
+
+#from mininet.examples.simpleperf import SingleSwitchTopo
+
+class testLinearBandwidth( unittest.TestCase ):
+    "Test ping with single switch topology (common code)."
+
+    prompt = 'mininet>'
+
+    def testLinearBandwidth( self ):
+        count = 0
+        tolerance = 0.5
+        opts = [ '\*\*\* Linear network results', '(\d+)\s+([\d\.]+) (.bits)', pexpect.EOF ]
+        p = pexpect.spawn( 'python -m mininet.examples.linearbandwidth' )
+        while True:
+            index = p.expect( opts, timeout=600 )
+            if index == 0:
+                previous_bw = 10 ** 10 # 10 Gbits
+                count += 1
+            elif index == 1:
+                n = int( p.match.group( 1 ) )
+                bw = float( p.match.group( 2 ) )
+                unit = p.match.group( 3 )
+                if unit[ 0 ] == 'K':
+                    bw *= 10 ** 3
+                elif unit[ 0 ] == 'M':
+                    bw *= 10 ** 6
+                elif unit[ 0 ] == 'G':
+                    bw *= 10 ** 9
+                self.assertTrue( bw < previous_bw )
+                previous_bw = bw
+            else:
+                break
+
+        self.assertTrue( count > 0 )
+
+if __name__ == '__main__':
+    setLogLevel( 'warning' )
+    unittest.main()
@@ -0,0 +1,48 @@
+#!/usr/bin/env python
+
+"""TEST"""
+
+import unittest
+import pexpect
+from collections import defaultdict
+from mininet.log import setLogLevel
+
+class testMultiPing( unittest.TestCase ):
+    "Test ping with single switch topology (common code)."
+
+    def testMultiPing( self ):
+        p = pexpect.spawn( 'python -m mininet.examples.multiping' )
+        opts = []
+        opts.append( "Host (h\d+) \(([\d.]+)\) will be pinging ips: ([\d. ]+)" )
+        opts.append( "(h\d+): ([\d.]+) -> ([\d.]+) \d packets transmitted, (\d) received" )
+        opts.append( pexpect.EOF )
+        pings = defaultdict( list )
+        while True:
+            index = p.expect( opts )
+            if index == 0:
+                name = p.match.group(1)
+                ip = p.match.group(2)
+                targets = p.match.group(3).split()
+                pings[ name ] += targets
+            elif index == 1:
+                name = p.match.group(1)
+                ip = p.match.group(2)
+                target = p.match.group(3)
+                received = int( p.match.group(4) )
+                if target == '10.0.0.200':
+                    self.assertEqual( received, 0 )
+                else:
+                    self.assertEqual( received, 1 )
+                try:
+                    pings[ name ].remove( target )
+                except:
+                    pass
+            else:
+                break
+        self.assertTrue( len(pings) > 0 )
+        for t in pings.values():
+            self.assertEqual( len( t ), 0 )
+
+if __name__ == '__main__':
+    setLogLevel( 'warning' )
+    unittest.main()
@@ -0,0 +1,40 @@
+#!/usr/bin/env python
+
+"""TEST"""
+
+import unittest
+import pexpect
+from collections import defaultdict
+from mininet.log import setLogLevel
+
+class testMultiPoll( unittest.TestCase ):
+    "Test ping with single switch topology (common code)."
+
+    def testMultiPoll( self ):
+        p = pexpect.spawn( 'python -m mininet.examples.multipoll' )
+        opts = []
+        opts.append( "\*\*\* (h\d) :" )
+        opts.append( "(h\d+): \d+ bytes from" )
+        opts.append( "Monitoring output for (\d+) seconds" )
+        opts.append( pexpect.EOF )
+        pings = {}
+        while True:
+            index = p.expect( opts )
+            if index == 0:
+                name = p.match.group( 1 )
+                pings[ name ] = 0
+            elif index == 1:
+                name = p.match.group( 1 )
+                pings[ name ] += 1
+            elif index == 2:
+                seconds = int( p.match.group( 1 ) )
+            else:
+                break
+        self.assertTrue( len(pings) > 0 )
+        # make sure we have received at least one ping per second
+        for count in pings.values():
+            self.assertTrue( count >= seconds )
+
+if __name__ == '__main__':
+    setLogLevel( 'warning' )
+    unittest.main()
@@ -0,0 +1,32 @@
+#!/usr/bin/env python
+
+"""TEST"""
+
+import unittest
+import pexpect
+from mininet.log import setLogLevel
+
+class testMultiTest( unittest.TestCase ):
+    "Test ping with single switch topology (common code)."
+
+    prompt = 'mininet>'
+
+    def testMultiTest( self ):
+        p = pexpect.spawn( 'python -m mininet.examples.multitest' )
+        p.expect( '(\d+)% dropped' )
+        dropped = int( p.match.group(1) )
+        self.assertEqual( dropped, 0 )
+        ifCount = 0
+        while True:
+            index = p.expect( [ 'h\d-eth0', self.prompt ] )
+            if index == 0:
+                ifCount += 1
+            elif index == 1:
+                p.sendline( 'exit' )
+                break
+        p.wait()
+        self.assertEqual( ifCount, 4 )
+
+if __name__ == '__main__':
+    setLogLevel( 'warning' )
+    unittest.main()
@@ -0,0 +1,44 @@
+#!/usr/bin/env python
+
+"""TEST"""
+
+import unittest
+import pexpect
+#from time import sleep
+from mininet.log import setLogLevel
+#from mininet.net import Mininet
+#from mininet.node import CPULimitedHost
+#from mininet.link import TCLink
+
+#from mininet.examples.simpleperf import SingleSwitchTopo
+
+class testNAT( unittest.TestCase ):
+    "Test ping with single switch topology (common code)."
+
+    prompt = 'mininet>'
+
+    # skip if 8.8.8.8 unreachable
+    def testNAT( self ):
+        p = pexpect.spawn( 'python -m mininet.examples.nat' )
+        p.expect( self.prompt )
+        p.sendline( 'h1 ping -c 1 8.8.8.8' )
+        p.expect ( '(\d+)% packet loss' )
+        percent = int( p.match.group( 1 ) ) if p.match else -1
+        p.expect( self.prompt )
+        p.sendline( 'exit' )
+        p.wait()
+        self.assertEqual( percent, 0 )
+    '''
+    def testTopo( self ):
+        topo = SingleSwitchTopo(n=4)
+        net = Mininet(topo=topo,
+                  host=CPULimitedHost, link=TCLink)
+        net.start()
+        h1, h4 = net.get('h1', 'h4')
+        h1.cmd( 'ping -c 1 %s' % h4.IP() )
+        net.stop()
+    '''
+
+if __name__ == '__main__':
+    setLogLevel( 'warning' )
+    unittest.main()
@@ -0,0 +1,45 @@
+#!/usr/bin/env python
+
+"""TEST"""
+
+import unittest
+import pexpect
+from collections import defaultdict
+from mininet.log import setLogLevel
+
+class testPopen( unittest.TestCase ):
+    "Test ping with single switch topology (common code)."
+
+    def pingTest( self, name ):
+        p = pexpect.spawn( 'python -m %s' % name )
+        opts = []
+        opts.append( "<(h\d+)>: PING " )
+        opts.append( "<(h\d+)>: (\d+) packets transmitted, (\d+) received" )
+        opts.append( pexpect.EOF )
+        pings = {}
+        while True:
+            index = p.expect( opts )
+            if index == 0:
+                name = p.match.group(1)
+                pings[ name ] = 0
+            elif index == 1:
+                name = p.match.group(1)
+                transmitted = p.match.group(2)
+                received = p.match.group(3)
+                self.assertEqual( received, transmitted )
+                pings[ name ] += 1
+            else:
+                break
+        self.assertTrue( len(pings) > 0 )
+        for count in pings.values():
+            self.assertEqual( count, 1 )
+
+    def testPopen( self ):
+        self.pingTest( 'mininet.examples.popen' )
+
+    def testPopenPoll( self ):
+        self.pingTest( 'mininet.examples.popenpoll')
+
+if __name__ == '__main__':
+    setLogLevel( 'warning' )
+    unittest.main()
@@ -0,0 +1,29 @@
+#!/usr/bin/env python
+
+"""TEST"""
+
+import unittest
+import pexpect
+from mininet.log import setLogLevel
+
+class testScratchNet( unittest.TestCase ):
+    "Test ping with single switch topology (common code)."
+
+    results = [ "1 packets transmitted, 1 received, 0% packet loss", pexpect.EOF ]
+
+    def pingTest( self, name ):
+        p = pexpect.spawn( 'python -m %s' % name )
+        index = p.expect( self.results )
+        self.assertEqual( index, 0 )
+
+
+    def testPingKernel( self ):
+        self.pingTest( 'mininet.examples.scratchnet' )
+
+
+    def testPingUser( self ):
+        self.pingTest( 'mininet.examples.scratchnetuser' )
+
+if __name__ == '__main__':
+    setLogLevel( 'warning' )
+    unittest.main()
@@ -0,0 +1,37 @@
+#!/usr/bin/env python
+
+"""TEST"""
+
+import unittest
+import pexpect
+from time import sleep
+from mininet.log import setLogLevel
+from mininet.net import Mininet
+from mininet.node import CPULimitedHost
+from mininet.link import TCLink
+
+from mininet.examples.simpleperf import SingleSwitchTopo
+
+class testSimplePerf( unittest.TestCase ):
+    "Test ping with single switch topology (common code)."
+
+
+    def testE2E( self ):
+        results = [ "Results:", pexpect.EOF, pexpect.TIMEOUT ]
+        p = pexpect.spawn( 'python -m mininet.examples.simpleperf' )
+        index = p.expect( results, timeout=600 )
+        self.assertEqual( index, 0 )
+        p.wait()
+
+    def testTopo( self ):
+        topo = SingleSwitchTopo(n=4)
+        net = Mininet(topo=topo,
+                  host=CPULimitedHost, link=TCLink)
+        net.start()
+        h1, h4 = net.get('h1', 'h4')
+        h1.cmd( 'ping -c 1 %s' % h4.IP() )
+        net.stop()
+
+if __name__ == '__main__':
+    setLogLevel( 'warning' )
+    unittest.main()
@@ -0,0 +1,57 @@
+#!/usr/bin/env python
+
+"""TEST"""
+
+import unittest
+import pexpect
+from time import sleep
+from mininet.log import setLogLevel
+from mininet.clean import cleanup, sh
+
+class testBareSSHD( unittest.TestCase ):
+    "Test ping with single switch topology (common code)."
+
+    opts = [ '\(yes/no\)\?', 'refused', 'Welcome', pexpect.EOF, pexpect.TIMEOUT ]
+
+    def connected( self, ip ):
+        "check connected"
+        p = pexpect.spawn( 'ssh -i /tmp/ssh/test_rsa %s' % ip )
+        while True:
+            index = p.expect( self.opts )
+            if index == 0:
+                print p.match.group(0)
+                p.sendline( 'yes' )
+            elif index == 1:
+                return False
+            elif index == 2:
+                p.sendline( 'exit' )
+                p.wait()    
+                return True
+            else:
+                return False
+
+    def setUp( self ):
+        # create public key pair for testing
+        sh( 'mkdir /tmp/ssh' )
+        sh( "ssh-keygen -t rsa -P '' -f /tmp/ssh/test_rsa" )
+        sh( 'cat /tmp/ssh/test_rsa.pub >> /tmp/ssh/authorized_keys' )
+        cmd = ( 'python -m mininet.examples.sshd -D '
+                '-o AuthorizedKeysFile=/tmp/ssh/authorized_keys '
+                '-o StrictModes=no' )
+        self.net = pexpect.spawn( cmd )
+        self.net.expect( 'mininet>' )
+
+    def testSSH( self ):
+        for h in range( 1, 5 ):
+            self.assertTrue( self.connected( '10.0.0.%d' % h ) )
+
+    def tearDown( self ):
+        self.net.sendline( 'exit' )
+        self.net.wait()
+        # remove public key pair
+        sh( 'rm -rf /tmp/ssh' )
+
+if __name__ == '__main__':
+    setLogLevel( 'warning' )
+    unittest.main()
+
@@ -0,0 +1,37 @@
+#!/usr/bin/env python
+
+"""TEST"""
+
+import unittest
+import pexpect
+#from time import sleep
+from mininet.log import setLogLevel
+#from mininet.net import Mininet
+#from mininet.node import CPULimitedHost
+#from mininet.link import TCLink
+
+#from mininet.examples.simpleperf import SingleSwitchTopo
+
+class testTree1024( unittest.TestCase ):
+    "Test ping with single switch topology (common code)."
+
+    prompt = 'mininet>'
+
+    def testTree1024( self ):
+        p = pexpect.spawn( 'python -m mininet.examples.tree1024' )
+        p.expect( self.prompt, timeout=6000 ) # it takes awhile to set up
+        p.sendline( 'h1 ping -c 1 h1024' )
+        p.expect ( '(\d+)% packet loss' )
+        percent = int( p.match.group( 1 ) ) if p.match else -1
+        #self.assertEqual( percent, 0 )
+        #p.expect( self.prompt )
+        #p.sendline( 'iperf' )
+        #p.expect( "Results: \['\d+ .bits/sec', '\d+ .bits/sec'\]" )
+        p.expect( self.prompt )
+        p.sendline( 'exit' )
+        p.wait()
+        self.assertEqual( percent, 0 )
+
+if __name__ == '__main__':
+    setLogLevel( 'warning' )
+    unittest.main()
@@ -0,0 +1,36 @@
+#!/usr/bin/env python
+
+"""TEST"""
+
+import unittest
+import pexpect
+#from time import sleep
+from mininet.log import setLogLevel
+#from mininet.net import Mininet
+#from mininet.node import CPULimitedHost
+#from mininet.link import TCLink
+
+#from mininet.examples.simpleperf import SingleSwitchTopo
+
+class testTreePing64( unittest.TestCase ):
+    "Test ping with single switch topology (common code)."
+
+    prompt = 'mininet>'
+
+    def testTreePing64( self ):
+        p = pexpect.spawn( 'python -m mininet.examples.treeping64' )
+        p.expect( 'Tree network ping results:', timeout=6000 )
+        count = 0
+        while True:
+            index = p.expect( [ '(\d+)% packet loss', pexpect.EOF ] )
+            if index == 0:
+                percent = int( p.match.group( 1 ) ) if p.match else -1
+                self.assertEqual( percent, 0 )
+                count += 1
+            else:
+                break
+        self.assertTrue( count > 0 )
+
+if __name__ == '__main__':
+    setLogLevel( 'warning' )
+    unittest.main()