Every time I see an article claiming that TDD improves code quality, a part of me cries. It’s not that I don’t think it can be true. It’s because it’s not necessarily true, and those articles rarely bother to provide a satisfying explanation. Here’s my try.
TDD and Better Design
There’s a lot of talking about TDD making your codebase more modular and less coupled, and making the designs you produce being better in general. I think this might be true, mainly because of two factors: the act of design and characteristics of testable code.
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