The Quest Begins (The "Why") I still remember the first time I tried to add a new feature to a legacy codebase. I opened the file, stared at a 200‑line function that did everything from validating input to talking to a database, and thought, “I’ll just slip my code in somewhere. ” Thirty minutes...

Source: [Dev.to](https://dev.to/timevolt/the-force-awakens-test-driven-development-why-and-how-to-start-44b3)

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