I'm not sure why you can't write a normal rspec against these objects--- generally rspec tests the objects themselves and how their public methods are implemented (and, when appropriate, the internals of the object implementation).
The decision to make the attachment polymorphic -- which incidentally looks like a fine choice in this case -- is an implementation decision. In these cases, I would test * That a User can have many (add/remove) addresses * That a Company can have many (add/remove) addresses) * That an address that belongs to a User can be correctly instantiated (and addressable is the user you are expecting) * That an address that belongs to a Company can be correctly instantiated (and addressable is the company you are expecting) (Some might argue that the things I listed above are over-kill testing, since all you're really doing is testing active record. I generally do write a few of these style of tests for sanity, but tend to not go overboard testing every feature of the association interface --- those features provided by AR itself --- in my unit tests) Remember, your rspec will say something like address.addressable.should eq(user) The decision to implement as polymorphic is an implementation decision, so although in your case addressable is a belong_to polymorphic association, it could easily be implemented as a method on the object itself. Your unit test should be abstract from that, making your implementation de-coupled from your test expectation. -Jason On Sep 26, 2014, at 11:01 AM, Jan Yo <li...@ruby-forum.com> wrote: > class Address < ActiveRecord::Base > belongs_to :addressable, polymorphic: true > end > > My Second Model: app/models/user.rb > > class User < ActiveRecord::Base > has_many :addresses, as: :addressable > end > > My third model: app/models/company.rb > > class Company < ActiveRecord::Base > has_many :addresses, as: :addressable > end > > For Address table, I have this migration: > > class CreateAddresses < ActiveRecord::Migration > def change > create_table :addresses do |t| > t.string :description > t.references :addressable, polymorphic: true > t.timestamps > end > end > end > > -- > Posted via http://www.ruby-forum.com/. > > -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to rubyonrails-talk+unsubscr...@googlegroups.com. > To post to this group, send email to rubyonrails-talk@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/rubyonrails-talk/5eb515f9f606ff97fca7967dc3b96e66%40ruby-forum.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-talk+unsubscr...@googlegroups.com. To post to this group, send email to rubyonrails-talk@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/5B777EC1-098F-4CE6-9E04-A08BB590C20A%40datatravels.com. For more options, visit https://groups.google.com/d/optout.
