Example of a unit test

unittest.py

import unittest


def multiply(a, b, c):
    return a * b * c + 1


class MathTest(unittest.TestCase):
    def testMultiply(self):

        a = 2
        b = 5
        c = 5

        expected = 50

        actual = multiply(a, b, c)

        self.assertEqual(expected, actual, 'Failed multiplication test.')


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