Python Unittest

import unittest

class TestStringMethods(unittest.TestCase):

    def test_upper(self):

         self.assertEqual('foo'.upper(), 'FOO')

    def test_isupper(self):

         self.assertTrue('FOO'.isupper())

         self.assertFalse('Foo'.isupper())

    def test_split(self):

         s = 'hello world'

         self.assertEqual(s.split(), ['hello', 'world'])

         # check that s.split fails when the separator is not a string

         with self.assertRaises(TypeError):

              s.split(2)

if __name__ == '__main__':

    unittest.main()