The description of the video the example was taken from (http://vimeo.com/8569257 http://vimeo.com/8569257) notes that the tests are done using his (Gary Bernha

The description of the video the example was taken from (http://vimeo.com/8569257 http://vimeo.com/8569257) notes that the tests are done using his (Gary Bernhardt) own Mote framework (https://github.com/garybernhardt/mote https://github.com/garybernhardt/mote) From a quick look, it does indeed use some very black and rather... funky magic to locate and call the inner functions.