Welcome! Please see the About page for a little more info on how this works.
Both of these should generate a better variety of values (strings, keywords, symbols, numbers) in addition to collections and nil.
Comment made by: seancorfield
See also http://dev.clojure.org/jira/browse/TCHECK-111 which may solve this directly?
Comment made by: gfredericks
This is probably http://dev.clojure.org/jira/browse/TCHECK-83, which is fixed on test.check master.
Comment made by: alexmiller
I'm going to leave this open pending a new release and dependency update to test.check, which I presume will address it.