Guys,

I was trying to solve one puzzle[1] and could not think of a way to
write tests first, the problem which I faced was the problem requires
reading XML and CSV file formats so do we normally write tests to
check the values read from the file?

If not when should we start with TDD in situation like this as you can
process the data only when you have read the file. I want to know the
experiences and the way you guys will approach to such kind of
problems.

[1] http://puzzlenode.com/puzzles/2

-- 
Mayank Kohaley