# checks for an integer more than 0 (allows <enter>)
def int_checker(to_check):
    while True:
        error = "Please enter an integer that is 1 or more."

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

        try:
            response = int(to_check)

            # checks that the number is more than / equal to 13
            if response < 1:
                print(error)
                return "invalid"
            else:
                return response

        except ValueError:
            print(error)
            return "invalid"


# 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:
    # retrieve test case and expected value
    case = item[0]
    expected = item[1]

    # get actual value (ie: test ticket function)
    actual = int_checker(case)

    # compare actual and expected and output pass / fail
    if actual == expected:
        print(f" ✅✅✅Passed! Case: {case}, expected: {expected}, received: {actual} ✅✅✅")
    else:
        print(f"❌❌❌ Failed! Case: {case}, expected: {expected}, received: {actual} ❌❌❌")