# Created by Egor Kostan.
# GitHub: https://github.com/ikostan
# LinkedIn: https://www.linkedin.com/in/egor-kostan/
# FUNDAMENTALS ALGORITHMS NUMBERS
import unittest
import allure
from utils.log_func import print_log
from kyu_7.factorial.factorial import factorial
[docs]@allure.epic('7 kyu')
@allure.parent_suite('Beginner')
@allure.suite("Algorithms")
@allure.sub_suite("Unit Tests")
@allure.feature("Addition")
@allure.story('Sum of Numbers')
@allure.tag()
@allure.link(url='',
name='Source/Kata')
class FactorialTestCase(unittest.TestCase):
"""
Testing 'factorial' function
"""
[docs] def test_factorial(self):
"""
Testing 'factorial' function
In mathematics, the factorial of a non-negative integer n,
denoted by n!, is the product of all positive integers less
than or equal to n. For example: 5! = 5 * 4 * 3 * 2 * 1 = 120.
By convention the value of 0! is 1.
Write a function to calculate factorial for a given input.
If input is below 0 or above 12 throw an exception of type
ValueError (Python).
:return:
"""
allure.dynamic.title("Testing 'factorial' function")
allure.dynamic.severity(allure.severity_level.NORMAL)
allure.dynamic.description_html('<h3>Codewars badge:</h3>'
'<img src="https://www.codewars.com/users/myFirstCode'
'/badges/large">'
'<h3>Test Description:</h3>'
"<p></p>")
with allure.step("Enter a number and verify the output"):
data = [
(0, 1, "factorial for 0 is 1"),
(1, 1, "factorial for 1 is 1"),
(2, 2, "factorial for 2 is 2"),
(3, 6, "factorial for 3 is 6"),
]
for n, expected, msg in data:
print_log(n=n,
expected=expected,
msg=msg)
self.assertEqual(expected,
factorial(n),
msg)