No wonder we have such hopeless toilets. They tried golf balls and, wow, it passed all of them. And then little pieces of hose and again wow, they all passed (for the sarcasm-impaired, this is sarcastic). And then they had a bunch of single sheets of toilet paper and those--wow--passed as well. A couple of other equally useless tests the details I don't remember and of course the dumper passed those too.
(If only people would ask me....<g>) In the case of toilet paper what they should have tested are three feet of paper wadded up and glued (loosely) together, and another three foot piece similarly wadded into a couple of inches, and another...about five in total. Then put in a couple of ripe, peeled but uncut bananas. Let all this settle for a couple of minutes to simulate the reading of yet another chapter of War and Peace and then flush. Break out the plunger!
To simulate certain members of my family a banana is only about half the required size (length and diameter) so the mfg is getting off really easily.