HeFDI Code School - Part 4 - Introduction to Test Driven Development

Continuously changing requirements lead to rapidly evolving software. While adapting the source code to fit the requirements, we have to ensure that code changes work as intended and don’t break existing features. At the same time the source code needs to stay maintainable and extensible to allow changes for new features in the future.This is where the development approach of Test-Driven Development comes in. It emphasizes writing automated tests before writing the code. The developer writes a failing test, then writes the code to make the test pass, and finally refactors the code to improve its quality. This cycle is repeated for each new feature or change to the code and therefore ensures that every new or existing feature is always tested and working as intended. In this workshop we will collaboratively work through a TDD example.