Require minitest for Rails 4.0 or higher
Require minitest for Rails 4.0 or higher

ActiveSupport::TestCase is built on Test::Unit in 3.2, but on minitest
in 4.0 or higher.

kerrizor/rails-erd,kerrizor/rails-erd,sferik/rails-erd,sferik/rails-erd,qiujuer/rails-erd,voormedia/rails-erd,voormedia/rails-erd,nalabjp/rails-erd,nalabjp/rails-erd,qiujuer/rails-erd,mallikarjunayaddala/rails-erd,mallikarjunayaddala/rails-erd