How can I effectively test modular code in Python?

How can I effectively test modular code in Python?

You can use the unittest module in Python to create test cases for your modular code. Would you like an example?

Yes, please provide an example of how to write a test case.

Sure! Here's a simple example:

import unittest
from my_module import my_function

class TestMyFunction(unittest.TestCase):
    def test_case_1(self):
        self.assertEqual(my_function(1), 2)

if __name__ == '__main__':
    unittest.main()

This tests if my_function returns 2 when given 1.

What if I want to test multiple cases?

You can add more methods to your test class, each testing different inputs. For example:

def test_case_2(self):
    self.assertEqual(my_function(2), 3)