Merge pull request #381 from cdburkard/examples/interfaces

adding example and test for intf.config()
2014-09-20 23:31:30 -07:00
parent 8396960ec0 706229da77
commit 57686d3149
2 changed files with 94 additions and 0 deletions
@@ -0,0 +1,45 @@
+#!/usr/bin/env python
+
+"""
+Test for intfOptions.py
+"""
+
+import unittest
+import pexpect
+import sys
+
+class testIntfOptions( unittest.TestCase ):
+
+    def testIntfOptions( self ):
+        "verify that intf.config is correctly limiting traffic"
+        p = pexpect.spawn( 'python -m mininet.examples.intfOptions ' )
+        tolerance = .8
+        opts = [ "Results: \['([\d\.]+) .bits/sec",
+                 "(\d+) packets transmitted, (\d+) received, (\d+)% packet loss, time (\d+)ms",
+                 "h(\d+)->h(\d+): (\d)/(\d), rtt min/avg/max/mdev ([\d\.]+)/([\d\.]+)/([\d\.]+)/([\d\.]+) ms",
+                 pexpect.EOF ]
+        while True:
+            index = p.expect( opts, timeout=600 )
+            if index == 0:
+                bw = float( p.match.group( 1 ) )
+                self.assertGreaterEqual( bw, float( 5 * tolerance ) )
+                self.assertLessEqual( bw, float( 5 + 5 * ( 1 - tolerance ) ) )
+            elif index == 1:
+                loss = int( p.match.group( 3 ) )
+                msg = ( "testing packet loss at 50%\n",
+                        "this test will sometimes fail\n",
+                        "ran 20 pings accross network\n",
+                        "packet loss is %d%%\n\n"
+                        % loss )
+                self.assertGreaterEqual( loss, 50 * .8, msg )
+                self.assertLessEqual( loss,  50 + 50 * ( 1 - tolerance ), msg )
+            elif index == 2:
+                delay = float( p.match.group( 6 ) )
+                self.assertGreaterEqual( delay, 15 * .8 )
+                self.assertLessEqual( delay,  15 + 15 * ( 1 - tolerance ) )
+            else:
+                break
+
+
+if __name__ == '__main__':
+    unittest.main()