How do I handle exceptions in unit testing?

How do I handle exceptions in unit testing?

Handling exceptions in unit testing involves using assertions to check for expected exceptions. You can use frameworks like JUnit or pytest.

Can you give me an example of how to do that in Python?

Sure! In Python with pytest, you can use the 'pytest.raises' context manager to assert that an exception is raised. Here's an example:

import pytest

def test_divide_by_zero():
    with pytest.raises(ZeroDivisionError):
        divide(1, 0)

What if I want to test multiple exceptions?

You can use multiple 'with' statements or a loop to check for different exceptions. Here's an example:

for value in [0, 'a']:
    with pytest.raises((ZeroDivisionError, TypeError)):
        divide(1, value)

Are there any best practices for testing exceptions?

Yes! Some best practices include: testing only one exception per test, using descriptive messages, and ensuring your tests are isolated.