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

examples/test/test_controllers.py

@@ -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()