The latest articles on DEV Community by Patson Chidari (@patmandee). https://dev.to/patmandee https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F1084470%2F9296bedd-b480-4c07-b239-27031dda95a9.jpeg https://dev.to/patmandee en Patson Chidari Wed, 04 Mar 2026 06:20:30 +0000 https://dev.to/patmandee/the-importance-of-tdd-g46 https://dev.to/patmandee/the-importance-of-tdd-g46 <p>I built an "awesome" API with 12 parameters.</p> <p>It was garbage.</p> <p>Nobody could use it without a PhD in my brain.</p> <p>After years of backend development, I learned Test Driven Development (TDD) the hard way. I was coding deep in the weeds, adding parameter after parameter because I needed the data.</p> <p>When I finally wrote tests, reality hit:</p> <ul> <li><p>Callers didn't have half the info I required</p></li> <li><p>My "beautiful" API was unusable </p></li> <li><p>I'd forgotten the most important person: the user</p></li> </ul> <p>TDD flips this backwards thinking.</p> <p>You write tests for code you wish existed. Then build code to pass those tests.</p> <p>Red → Green → Refactor. Repeat.</p> <p>It forces you to think like your caller, not your compiler.</p> <p>The best part? It saves massive debugging time later. Those test cases become your safety net when libraries update or teammates make changes.</p> <blockquote> <p>"If it's worth building, it's worth testing. If it's not worth testing, why waste time..."</p> </blockquote> webdev programming devops testing