Validate if my mini project game can be past through Test_Python.py?

So basically i am creating my version of rock ,paper, scissor game as a python project and i need help running it through by testing or passing it which i forgot how to becuase i took a few days break working on my project and forgot how to test it and this is my project:

import random
import math

def play():
    user = input("What's your choice? 'g' for gun, 'i' for ice, 'k' for knife\n")
    user = user.lower()

    computer = random.choice(['g', 'i', 'k'])

    if user == computer:
        return (0, user, computer)


    if is_win(user, computer):
        return (1, user, computer)

    return (-1, user, computer)

def is_win(player, opponent):

    if (player == 'g' and opponent == 'k') or (player == 'k' and opponent == 'i') or (player == 'i' and opponent == 'k'):
        return True
    return False

def play_best_of(n):

    player_wins = 0
    computer_wins = 0
    wins_necessary = math.ceil(n/2)
    while player_wins < wins_necessary and computer_wins < wins_necessary:
        result, user, computer = play()

        if result == 0:
            print('It is a tie. You and the Machine have both chosen {}. \n'.format(user))

        elif result == 1:
            player_wins += 1
            print('You chose {} and the Machine chose {}. Yippy You won! ;[\n'.format(user, computer))
        else:
            computer_wins += 1
            print('You chose {} and the Machine chose {}. Darn it You lost! :[\n'.format(user, computer))

    if player_wins > computer_wins:
        print('You have won the best of {} games Congrats! What a player :D'.format(n))
    else:
        print('Sadly, the Machine has won the best of {} games. Better luck next time!'.format(n))


if __name__ == '__main__':
    play_best_of(3)

(Note: This is all i came up with i just need help passing through it, how do i test it basically?)

i did tr but i keep getting pops up of a few problems here and there. i do have

from project import play, is_win, play_best_of

def play():

    
def is_win():



def play_best_of(n):




if __name__ == '__main__':
    play_best_of(3)

for my test prompt but i forgot how to assert i think? PLEASE HELP!

>Solution :

I believe you’re talking about writing unit tests. There are two libraries commonly used for unit testing in Python, the built in unittest library and the third-party pytest.

I would personally recommend that you use pytest because the syntax is much simpler. Refer to the unittest and pytest docs for further usage information.

A basic passing pytest example:
test_win.py

from project import is_win

def test_win_gk():
    assert is_win('g', 'k') == True

You can run this test by executing pytest in the same directory. This will execute every test in each file prefixed or suffixed with test. (test_something.py or something_test.py)