how can I test this interactive calculator using pytest

[medveeee]

hi,

I have small interactive calculator.
could you please give me a hint how could test it using pytest?
I found e.g. this approach, but have no idea how apply it:
https://stackoverflow.com/questions/5347...simulation
or maybe you have another idea.

thank you for any help!

#!/usr/bin/env python3


class Calculator:
    def __init__(self):
        pass

    def add(self, a, b):
        return a + b

    def sub(self, a, b):
        return a - b
		

#!/usr/bin/env python3
import calculator
import cmd


class InteractiveCalculator(cmd.Cmd):
    prompt = '(icalc) '
    cal = calculator.Calculator()

    def do_add(self, arg):
        """A + B"""
        print(self.cal.add(*parse(arg)))

    def do_sub(self, arg):
        """A - B"""
        print(self.cal.sub(*parse(arg)))

    def do_exit(self, arg):
        """quits from the program"""
        exit()


def parse(arg):
    """Convert a series of zero or more numbers to an argument tuple"""
    return tuple(map(int, arg.split()))


if __name__ == '__main__':
    InteractiveCalculator().cmdloop()

Yoriz write Dec-17-2022, 10:28 AM:
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