How do I use assertions in Python tests?

How do I use assertions in Python tests?

You can use the assert statement in Python to test if a condition is true. If it is false, an AssertionError is raised.

Can you give me an example of using assertions in a test?

Sure! Here's a simple example:

def test_addition():
    result = 1 + 1
    assert result == 2, "Test failed: 1 + 1 should equal 2"

This test checks if the addition is correct.

What happens if the assertion fails?

If the assertion fails, Python raises an AssertionError and stops the execution of the test, providing the error message you specified.

Are there any best practices for using assertions?

Yes! It's best to keep assertions simple, use clear messages, and avoid using them for validating user input.