Pytest Assertions

Introduction

One of pytest’s key features is the set of built-in assertion functions it provides. Assertions are essential for unit testing because they allow us to verify that our code is producing the expected output.

In this lesson, we’ll explore the various types of assertions available in pytest, including some examples to help you get started with using them.

Pytest assertions

Let’s learn what assert statements do and take a look at some examples.

The assert statement

In the previous lesson, we saw how the assert built-in feature in Python works. You can experiment with the assert statement in Python by using the code given below. You can modify the code, run it, and observe the behavior when the assertions pass or fail. By doing so, you’ll gain a hands-on understanding of how assert statements can be used to check conditions and catch unexpected behavior during development and debugging. This will help you become familiar with the usage and behavior of assert statements in Python and how they can be utilized effectively in your own code.