Test ordering by polymorphic field

spec/searchlogic/named_scopes/association_ordering_spec.rb

@@ -24,4 +24,8 @@
   it "should work through #order" do
     Company.order('ascend_by_users_username').proxy_options.should == Company.ascend_by_users_username.proxy_options
   end
+
+  it "should ascend with a polymorphic belongs to" do
+    Audit.ascend_by_auditable_user_type_username.proxy_options.should == User.descend_by_username.proxy_options.merge(:joins => :users)
+  end
 end

spec/spec_helper.rb

@@ -99,6 +99,7 @@ class ::User < ActiveRecord::Base
       belongs_to :company, :counter_cache => true
       has_many :orders, :dependent => :destroy
       has_many :orders_big, :class_name => 'Order', :conditions => 'total > 100'
+      has_many :audits, :as => :auditable
       has_and_belongs_to_many :user_groups
 
       self.skip_time_zone_conversion_for_attributes = [:whatever_at]