A Beginner's Guide to Unit Testing with Pytest | Better Stack Community

Unit testing is a crucial part of software development. It ensures that specificcode components work as intended, helps identify and fix bugs, documents code,and instils confidence in your application.Python's built-in tool, unittest, lacks advanced features likeparameterization and concise syntax, and requires using classes, which can berestrictive.Pytest is a third-party framework developedto address these shortcomings. It offers features like parameterization, fixturesupport, and concise syntax. Tests can be written using functions or classes,providing flexibility.This tutorial will guide you through writing unit tests with Pytest.PrerequisitesBefore proceeding with this tutorial, ensure that you have arecent version of Python installed, and abasic understanding of writing Python programs.Step 1 — Setting up the project directoryBefore you can start learning about Pytest, you need to have a program to test.In this section, you will create a small program that formats file sizes inby...