Unit Testing and TDD in Python

Write reliable code! Learn to test your code with unittest, pytest, and Test-Driven Development.

Write reliable code! Learn to test your code with unittest, pytest, and Test-Driven Development.

Why test your code? (bugs, regressions)

Discover the unittest module

Simple test example

Red → Green → Refactor cycle

Write a test before writing the function

Workshop: code a function using TDD

Unit vs functional tests

Code coverage (concept)

Challenge: write 5 tests for an existing mini-module

Developer & Instructor

I make code bulletproof through testing. Learn to code with confidence and quality!

1 week ago

My code crashes much less since I started testing everything. A revolution!

At first, yes—but it saves you huge debugging time later. A worthwhile investment!

Test-Driven Development: you write the test BEFORE the code. It forces you to think clearly and produces cleaner code.

01 Is it time-consuming to set up?