Metabase clojure unit testing

Hi metabase team,

I am just trying to run unit testing in clojure (backend) via command lein test . But i have real data in my db how could i do test with that ? is there not testing db get created ?

Actually i do few changes and want to write it’s test case. There is an insertion into the user table. So when i run the testing command it show me fail by connection.

Can you please guide what will be the right path to do unit testing in Clojure ?

Thank you