Improve test

Author: n-rodriguez

spec/ajax-datatables-rails/orm/active_record_sort_records_spec.rb

@@ -33,8 +33,13 @@
     it 'should not sort a column which is not orderable' do
       datatable.params[:order]['0'] = { column: '0', dir: 'asc' }
       datatable.params[:order]['1'] = { column: '4', dir: 'desc' }
+
+      expect(datatable.sort_records(records).to_sql).to include(
+        'ORDER BY users.username ASC'
+      )
+
       expect(datatable.sort_records(records).to_sql).to_not include(
-        'ORDER BY users.username ASC, users.post_id DESC'
+        'users.post_id DESC'
       )
     end
   end