def test_product_of_two_digit_numbers(self): """ the largest palindrome which is the product of 2, 2 digit numbers is 9009: 99 x 91 """ self.assertEqual(largest_palindrome(2), 9009)
def test_product_of_four_digit_numbers(self): """ the largest palindrome which is the product 2, 4 digit numbers is 99000099 """ self.assertEqual(largest_palindrome(4), 99000099)