fix specs

Author: wendelfabianchinsamy

spec/rails_helper.rb

@@ -7,8 +7,6 @@
 abort("The Rails environment is running in production mode!") if Rails.env.production?
 
 require "rspec/rails"
-require "active_record"
-require "nulldb"
 
 # begin
 #   ActiveRecord::Migration.maintain_test_schema!
@@ -28,5 +26,5 @@
   config.filter_rails_from_backtrace!
 
   # Use the activerecord-nulldb-adapter to skip db dependency for specs
-  ActiveRecord.establish_connection(adapter: :nulldb)
+  ActiveRecord::Base.establish_connection(adapter: :nulldb)
 end