gistfile1.rb

require 'spec_helper'

describe PeopleController do
  before do
    controller.stub(:authenticate_user!)
    controller.stub(:authorize_resource!)
  end

  describe "PUT 'update'" do
    let :person do
      Person.make!(:nohup)
    end

    it 'destroy personable_was when personable is changed' do
      company = person.personable
      company.update_column(:cnpj, nil)
      
      individual = Individual.make(:sobrinho)
      identity = Identity.make(:sobrinho, :individual => nil)
      
      attributes = individual.attributes.except('created_at', 'updated_at')
      attributes.merge!({ :identity_attributes => identity.attributes.except('created_at', 'updated_at') })

      expect do
        put :update, :id => person.id, :person => { :personable_type => "Individual", 
                                                    :personable_attributes => attributes }
      end.to change(Company, :count).by(-1)
    end
  end
end