Unit in Python

import unittest
# define a test class which extends TestCase, and define a test method"test_add"
class TestDriver( unittest.TestCase ):
    def setUp( self ):
        pass
    def tearDown( self ):
        pass
    def test_add( self ):
        self.a = 2
        self.b = 3
        self.assertTrue( self.a + self.b >= 5 )
        
suite = unittest.makeSuite(TestDriver,'test')
runner = unittest.TextTestRunner()
runner.run( suite )