What is a good test strategy for a new ActiveRecord Adapter?

Hello,

We have written an ActiveRecord Adapter, and while it works, I am not
sure to what extent it is fully compatible with ActiveRecord. There
are lots of tests in the rails project for ActiveRecord. Perhaps there
is a good subset to start testing against? Or should if I simply added
a new test_nuodb section in the Rakefile, would it automatically pick
up whatever compliance tests already may exist?

What is a good test strategy that folks would recommend?

Thank you,

Bob