my snippet.. found some edge cases with interest-rate computation. I made a gist to show to others later, very compact and sums up everything I learned today. 1) Modeling my problem domain with generators (unfortunately, we have interest rates up to 400% an year for some loans here in Brazil.. i'm not too pessimistic in my model lol), 2) testing invariants [round-trips operations ] https://gist.github.com/wandersoncferreira/183c56da92c4fe388efef05ca51af4fa
three namespaces all covered. thanks guys o/