if __name__ == '__main__':
unittest.main()

#!/usr/bin/python
#coding=utf-8

class Computer(object):
 @staticmethod
 def add(a, b):
  return a + b;
 
 @staticmethod
 def sub(a, b):
  return a - b;<strong> </strong>

#!/usr/bin/python
#coding=utf-8
import unittest
from Testee import Computer

class Tester(unittest.TestCase): 
 def test_add(self):
  self.assertEqual(Computer.add(2, 3), 5, "test add function")
  
 def test_sub(self):
  self.assertEqual(Computer.sub(5, 1), 4, "test sub function") 

if __name__ == '__main__':
  unittest.main()

----------------------------------------------------------------------
Ran 2 tests in 0.000s
OK