RSpec and ActiveRecord validations using Rails 3

Does anyone known any gem that works with RSpec 2.6 and Rails 3.0.9 and
support all or almost all ActiveRecord validations?

I found out Remarkable (GitHub - carlosbrando/remarkable: Simplifying tests!) but
looks, please correct me if I’m wrong, doesn’t support RSpect 2.6 and
3 yet.

Thanks in advance.