def int_check(to_check):
    while True:
        error = "Please enter an integer mor then / equal to 13."

        # check for infinite mode
        if to_check == "":
            return "infinite"

        try:
            response = int(to_check)

            # checks that the number is more / equal to 13
            if game_goal < 13:
                print(error)
            else:
                return response

        except ValueError:
            print(error)

# Automated testing is below in the form (test_case, expected value)
to_test = [
    ("xlii", "invalid"),
    ("0.5", "invalid"),
    ("0", "invalid"),
    (1, 1),
    (2, 2),
    ("", "infinite"),
]

# run tests!
for item in to_test:
    #retrive test case and expected value
    case = item[0]
    expected = item [1]

    # get actual value (ie: test ticket function)
    actual = int_check(case, ["rock", "paper", "scissors"])

    # compare actual and expected and output pass / fail