Added tests for the ActiveRecord version model.
Added tests for the ActiveRecord version model.

Leadformance/vestal_versions,Skalar/vestal_versions,bnadav/vestal_versions,rthais/vestal_versions,scottwillson/vestal_versions,houston/vestal_versions,alexcrichton/vestal_versions,robertleelittleiii/vestal_versions,laserlemon/vestal_versions