That sounds reasonable to me. If anything, I might even go further and say that reading the manuals wouldn't be enough to fully convince me without also actually testing it by running a script on a given platform. It's not that I don't trust the manuals to be right, but I have less trust in myself to write bug-free code than probably any other language I've ever used, and I don't think I'd feel confident without verifying that I actually did what the manual said correctly.