aboutsummaryrefslogblamecommitdiffstats
path: root/activerecord/test/cases/relation/delegation_test.rb
blob: 29c9d0e2afa8d2504468f0ee5dda290a2c12c4ba (plain) (tree)
1
2
3
4
5
6
7
8
9
10







                                               

                                                     
 
                           
                                  

                              
                                    
            
                                       
           
                              
                                     

                                 



         
                                          





                                                                     
                                                


                                    
                                                          
                                        


         
                                                                        
                                                                 
                                                                    



         

                                                  
 
              
                         
       
     
 

                                               
 



                      


       
require 'cases/helper'
require 'models/post'
require 'models/comment'

module ActiveRecord
  class DelegationTest < ActiveRecord::TestCase
    fixtures :posts

    def call_method(target, method)
      method_arity = target.to_a.method(method).arity

      if method_arity.zero?
        target.public_send(method)
      elsif method_arity < 0
        if method == :shuffle!
          target.public_send(method)
        else
          target.public_send(method, 1)
        end
       elsif method_arity == 1
        target.public_send(method, 1)
      else
        raise NotImplementedError
      end
    end
  end

  module DelegationWhitelistBlacklistTests
    ARRAY_DELEGATES = [
      :+, :-, :|, :&, :[],
      :all?, :collect, :detect, :each, :each_cons, :each_with_index,
      :exclude?, :find_all, :flat_map, :group_by, :include?, :length,
      :map, :none?, :one?, :partition, :reject, :reverse,
      :sample, :second, :sort, :sort_by, :third,
      :to_ary, :to_set, :to_xml, :to_yaml, :join
    ]

    ARRAY_DELEGATES.each do |method|
      define_method "test_delegates_#{method}_to_Array" do
        assert_respond_to target, method
      end
    end

    ActiveRecord::Delegation::BLACKLISTED_ARRAY_METHODS.each do |method|
      define_method "test_#{method}_is_not_delegated_to_Array" do
        assert_raises(NoMethodError) { call_method(target, method) }
      end
    end
  end

  class DelegationAssociationTest < DelegationTest
    include DelegationWhitelistBlacklistTests

    def target
      Post.first.comments
    end
  end

  class DelegationRelationTest < DelegationTest
    include DelegationWhitelistBlacklistTests

    fixtures :comments

    def target
      Comment.all
    end
  end
end