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Glossary / Lexicon

What is Test Driven Development (TDD)?

05/15/2023 | by Patrick Fischer, M.Sc., Founder & Data Scientist: FDS

Test Driven Development (TDD) is a software development method in which developer:s first write tests before implementing code. The process consists of three steps: writing a test, implementing the code to pass the test, and refactoring the code to improve it.

In TDD, developer:s begin by formulating requirements for the system in the form of tests before writing the actual code. These tests are automated and run over and over again to ensure that the code continues to work as it is extended or changed.

The purpose of TDD is to ensure that the code does exactly what it is supposed to, and that it is clean, efficient, and easy to maintain. The method also helps identify bugs in the code early on, before they become major problems, and provides a way to measure and track the progress of development.

TDD can be used in many programming languages and environments, and is considered by many developer:s to be a proven method for producing high-quality code.

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