“Program testing can be a very effective way to show the presence of bugs, but it is hopelessly inadequate for showing their absence.” Edsger W. Dijkstra 1972 “The Humble Programmer,”.
Imagine fixing a critical bug in a complex, undocumented legacy codebase. A comprehensive automated test suite gives you instant feedback, ensuring your changes work and nothing else breaks. Automated testing isn’t just for catching bugs, it’s a safety net that enables confident maintenance, refactoring, and scaling.