Test-Driven Development

Gain confidence in your software with Test-Driven Development (TDD). Practice the red-green-refactor loop with Python and pytest—writing tests before you write your code. Learn how unit, integration, and end-to-end tests fit together to provide a comprehensive safety net. Organize clean test suites using advanced techniques: fixtures, mocking, and parameterization. Deploy with confidence at scale by incorporating testing into CI/CD and pre-flight checklists. Leverage TDD to use AI tools the right way—encode your requirements as tests, then let AI help implement the code that passes them. By the end of this course, you will be able to refactor with confidence, catch regressions early, and ship features faster with less risk.