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I agree.

I've been doing TDD for 4 years now, and I would totally agree that it takes a lot of time to hone the skills. My experiences of TDD on projects is quite similar to yours. However, it took me a year to simply really understand how to do TDD in any kind of sane way.

TDD is not something you can easily pick up in 6 months without a lot of mentoring and training from experienced TDD'ers.

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Part of the problem is that there are not that many TDD codebases or TDD'ers around. Also, this is probably not something you can pick up while doing toy projects or school assignments. The benefits start to show in the 100 kloc and above magnitudes, and as there are so many ways to paint yourself into a corner with bad overall design, coupling, unmaintainable (or slow!) tests, chances are, you don't figure out all the necessary things yourself. On top of that, there is no time to learn this much in most dev jobs, so you are left to learn with hobby projects (which do not usually grow big enough).

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