vendor/rails/actionpack/test/controller/fake_models.rb

   1 class Customer < Struct.new(:name, :id)
   2   def to_param
   3     id.to_s
   4   end
   5 end
   6
   7 class BadCustomer < Customer
   8 end
   9
  10 class GoodCustomer < Customer
  11 end
  12
  13 module Quiz
  14   class Question < Struct.new(:name, :id)
  15     def to_param
  16       id.to_s
  17     end
  18   end
  19 end