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A comment on Ask HN: Do you write tests before the implementation?. Parent comment

Re:Ask HN: Do you write tests before the implementation? by jswizzy on Friday November 15, 2019 @10:11AM (#21545401)
From what I understand about TDD it's more about getting the design right then testing for bugs.
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Re:Ask HN: Do you write tests before the implementation? by hackerm0nkey on Friday November 15, 2019 @10:16AM (#21545462)
TDD is also a design tool. I agree for newly written code, yes.

Writing a test before fixing a bug reveals the bug and solidify a proof that the fix addresses it adequately. So in this context, it's less about the design (since it's already there) and more about fixing and proving that the fix works.

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Re:Ask HN: Do you write tests before the implementation? by eyelidlessness on Friday November 15, 2019 @01:03PM (#21547098)
TDD is about getting design right, but it's also about ensuring that the design's functionality is defined, demonstrated and protected from regression.
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