Today I remembered an excellent video by GeePaw Hill about The Five Underplayed Premises Of TDD, which presents five fundamental premises that explain why TDD brings real value to software development.
1. The money premise: When writing tests, we do not do it for aesthetics or abstract principles; we do it because TDD allows us to build more features faster and with less rework, which directly translates into time and cost savings.
2. The judgment premise: There is no single recipe for achieving quality software. Developers who apply TDD continuously use human judgment to decide what to test and how, adapting the practice to the real needs of the system.
3. The chain premise: It is preferable to test very small subsystems that make up the larger system. Small tests are easier to read, maintain, and run than massive end-to-end tests. This is a pragmatic preference, not an absolute rule.
4. The correlation premise: The internal quality of the code is directly correlated with the productivity of the team working on it. When quality goes up, productivity goes up; when quality goes down, productivity also falls.
5. The momentum premise: Tests and testability guide the system's design. Highly testable code shows characteristics associated with good design. Changing the design to facilitate testing is part of the TDD process, and it is precisely how a small practice can drive significant design improvements.
These five premises form the basis of many decisions made by a developer who practices TDD. Reviewing materials like GeePaw Hill's video helps understand not only the how but also the why behind the technique, and to invest those ten minutes in improving the way we work.
At Q2BSTUDIO, we are a custom software and application development company specialized in creating practical and scalable solutions. We offer custom software services, custom applications, artificial intelligence and AI for businesses, AI agents, cybersecurity, AWS and Azure cloud services, business intelligence and Power BI services to transform data into decisions. We integrate practices like TDD to ensure high-quality code that accelerates deliveries and reduces risks, combining expertise in artificial intelligence with solid cybersecurity processes and cloud deployment.
If you are looking to optimize the development of your products through good practices like TDD and leverage cutting-edge technologies in artificial intelligence, cybersecurity, and AWS and Azure cloud services, at Q2BSTUDIO we help you design and implement custom solutions that drive your business.
