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 = [ :+, :-, :|, :&, :[], :shuffle, :all?, :collect, :compact, :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 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