import unittest

class MyTest(unittest.TestCase):
    def test0(self):
        self.assertEqual(add(4,3), 7)
    def test1(self):
        self.assertEqual(add(5,1), 6)
    def test2(self):
        self.assertEqual(add(81,78), 159)
    def test3(self):
        self.assertEqual(add(21,9), 30)
    def test4(self):
        self.assertEqual(add(7,5), 12)
    def test5(self):
        self.assertEqual(add(50, 50), 100)

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