Although I'm no Floyd fan, what he and Mosley did in the run up to the fight with regard to testing can only be a good thing. Surely nobody can disagree with that? A totally level playing field is best for every sport.
If Manny truly respects the sport, he'll take the tests and will contribute to a better and safer future for boxing in the process. Mayweather didn't invent the testing system, he is simply using the most comprehensive one currently in place. A good thing, no?