# my_extension2_test.py
import unittest
import my_extension2

class MyExtension2Test(unittest.TestCase):
    def test_decimals(self):
        import decimal

        a = [decimal.Decimal(1), decimal.Decimal(2)]
        b = [decimal.Decimal(3), decimal.Decimal(4)]

        result = my_extension2.dot_product(a, b)
        self.assertEqual(11, result)

    def test_not_lists(self):
        result1 = my_extension2.dot_product(
            (1, 2),
            [3, 4], 
        )
        result2 = my_extension2.dot_product(
            [1, 2],
            (3, 4),
        )
        result3 = my_extension2.dot_product(
            range(1, 3),
            range(3, 5),
        )
        self.assertAlmostEqual(11, result1)
        self.assertAlmostEqual(11, result2)
        self.assertAlmostEqual(11, result3)

...

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