added a check for the version added

spec/spec_helper.rb

@@ -47,6 +47,11 @@ CONFIG['key'] = ENV['BROWSERSTACK_ACCESS_KEY'] || ''
 ActiveRecord::Base.logger = nil
 OTR::ActiveRecord.migrations_paths = [File.join('core', 'main', 'ar-migrations')]
 OTR::ActiveRecord.configure_from_hash!(adapter:'sqlite3', database:':memory:')
+# otr-activerecord require you to manually establish the connection with the following line
+#Also a check to confirm that the correct Gem version is installed to require it, likely easier for old systems.
+if Gem.loaded_specs['otr-activerecord'].version > Gem::Version.create('2.0')
+  OTR::ActiveRecord.establish_connection!
+end
 ActiveRecord::Schema.verbose = false
 context = ActiveRecord::Migration.new.migration_context
 if context.needs_migration?