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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, :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
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
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