Torture test was intially designed by Cliff Biffle. He was one of the testers involved with MAKE magazine, which conducted this test on 15 different machines. This test was designed to push the printer to the limits with all kinds of solid structures having surfaces at different gradients. However this cannot be construed as an industry standard, atleast not yet.
You can download the Torture Test files from Thingiverse here to try it on your printer.