Last week, we had the author of TDD for a Shopping Website LiveProject. Friday at 11am Ranch time, Steven Solomon will be hosting a live TDD session just for us. See for the agenda and registration link
Its Better to map the data Types if you are sending any type other than String or Boolean. e.g., you can convert Int to a String and later remap it to int when u will have to perform any operation. I hope It will be helpful for you.