This is a pretty minor erratum, but I feel the need to point out that on page 12, the book states:
Your setups can build on top of each other…the setup in your
describecan accept values passed to it from the higher-updescribe…
Although the meaning is pretty clear, we were told on page 10 that nested describe blocks are disallowed.
Solution
The text should read something like:
…the
setupin yourdescribecan accept values passed to it from thesetupblock at the top level of the module…
Or something to that effect.