This context doc string is a little odd -- usually contexts are phrased using `if ...` or `when ...`.  Maybe `context "when :use_spec_location_as_call_site => true"` is passed?

(Also, I think `:use_spec_location_as_call_site`, while more verbose, is much clearer about what it means. `:spec_location`, on its own, is, IMO, unclear what it means).