There is a written test and followed by a gruelling rounds (6 intervies and a written test in 7 hrs - single day) of interview that were interesting but at times too stereotyped.
I think the Adobe people (i mean those who took my interview) are obsessed with the idea that a person who can solve the puzzles fast is suited best to their job.
Well, as my talks are indicating I was not selected but it was a good overall experience.
One thing I would like to state is that in Adobe the work in more or less related to graphics and pixel testing as far as testing is concerned. So beware if you are not interested in the pixel matchinmg stuff as it can be hell of a work there.
But overall USP of the company is good, so it is worth a try