Clojurians Log v2

In the (presumably unlikely) case where test/check does not find any failures in a function I've spec'ed, what is the expected output? e.g., I have a function foo and I check it like so

(->> (test/check 'foo) test/summarize-results)

In my case I'm just getting back a map of {:total 0} which seems suspect to me given the docs for these functions.