Originally Posted by Fou-Lu
All I can tell you is if you are using RoR, that won't take long to do at all.
Yes, it takes a few minutes to download an e-commerce gem.
The point is, this is from scratch, and also using TDD, single table inheritance, build web page etc.
I used an online tool to count words just in tests for 1 feature for a similar project of mine (practically the same feature), and used 50 words as an average typing speed. It takes 10 minutes typing tests for 1 feature, I would put another 5 minutes typing in view/controller, 15 minutes just pure typing for a feature. I would put another 5 minutes finding/opening/closing files and running the tests. Given, they give 20 minutes per feature, all this time is spent only for file manipulation.