Once again I have occasion to test some software by sending several hundred bytes through it. Today it's to see how much power my board will consume while sending serial, but who knows what tomorrow will bring?
Whenever I need to do this, I pay homage to Abe Lincoln by finding a copy of the Gettysburg Address, putting it in a string, and feeding it through my interface.
Not only is it the Best Speech Ever, but I always get a tickle to my irony-bone by the phrase "the world will little note nor long remember what is said here, ..."