def int_check():

    while True:
        error = "Please enter integer that is 13 or more."

        try:
            response = int(input("Enter an integer:"))

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

        except ValueError:
            print(error)




# Automated testing is below in the form (test_case, expected_value)
to_test = [
    ("yes", "yes"),
    ("Y", "yes"),
    ("No", "no"),
    ("N", "no"),
    ("YeS", "yes"),
    ("Maybe", "invalid"),
]

# 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 = string_checker(case, ["yes", "no"])

    # 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} ❌❌❌")