Remove usage of OpenStruct

spec/dummy_app/app/controllers/application_controller.rb

@@ -27,6 +27,6 @@ def info_for_paper_trail
   private
 
   def modify_current_user
-    @current_user = OpenStruct.new(id: 153)
+    @current_user = User.new(id: 153)
   end
 end

spec/dummy_app/app/models/user.rb

@@ -0,0 +1,4 @@
+# frozen_string_literal: true
+
+class User < ApplicationRecord
+end

spec/dummy_app/db/migrate/20110208155312_set_up_test_tables.rb

@@ -392,6 +392,8 @@ def up
       t.string :name
       t.text :supplier
     end
+
+    create_table :users, force: true
   end
 
   def down