Hmm, for some reason, they don't work correctly. I evaluate the
elisp-koans.el file as per the instructions, then try and run the test. That gives an error about
ert-bound-p not being present.
(require 'ert) at the top of elisp-koans.el and tried again.
That worked, but then when I run
elisp-koans/run-test and run the test, it doesn't seem to find the test. Hmm.
Oh - I hadn't evaluated the test as per the instructions - whoops!