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require 'abstract_unit'
require 'active_record/acts/list'
require 'fixtures/post'
require 'fixtures/comment'
require 'fixtures/author'
require 'fixtures/category'
require 'fixtures/categorization'
require 'fixtures/mixin'
require 'fixtures/company'
require 'fixtures/topic'
require 'fixtures/reply'
class CascadedEagerLoadingTest < Test::Unit::TestCase
fixtures :authors, :mixins, :companies, :posts, :categorizations, :topics
def test_eager_association_loading_with_cascaded_two_levels
authors = Author.find(:all, :include=>{:posts=>:comments}, :order=>"authors.id")
assert_equal 2, authors.size
assert_equal 5, authors[0].posts.size
assert_equal 1, authors[1].posts.size
assert_equal 9, authors[0].posts.collect{|post| post.comments.size }.inject(0){|sum,i| sum+i}
end
def test_eager_association_loading_with_cascaded_two_levels_and_one_level
authors = Author.find(:all, :include=>[{:posts=>:comments}, :categorizations], :order=>"authors.id")
assert_equal 2, authors.size
assert_equal 5, authors[0].posts.size
assert_equal 1, authors[1].posts.size
assert_equal 9, authors[0].posts.collect{|post| post.comments.size }.inject(0){|sum,i| sum+i}
assert_equal 1, authors[0].categorizations.size
assert_equal 1, authors[1].categorizations.size
end
def test_eager_association_loading_with_cascaded_two_levels_with_two_has_many_associations
authors = Author.find(:all, :include=>{:posts=>[:comments, :categorizations]}, :order=>"authors.id")
assert_equal 2, authors.size
assert_equal 5, authors[0].posts.size
assert_equal 1, authors[1].posts.size
assert_equal 9, authors[0].posts.collect{|post| post.comments.size }.inject(0){|sum,i| sum+i}
end
def test_eager_association_loading_with_cascaded_two_levels_and_self_table_reference
authors = Author.find(:all, :include=>{:posts=>[:comments, :author]}, :order=>"authors.id")
assert_equal 2, authors.size
assert_equal 5, authors[0].posts.size
assert_equal authors(:david).name, authors[0].name
assert_equal [authors(:david).name], authors[0].posts.collect{|post| post.author.name}.uniq
end
def test_eager_association_loading_with_cascaded_two_levels_with_condition
authors = Author.find(:all, :include=>{:posts=>:comments}, :conditions=>"authors.id=1", :order=>"authors.id")
assert_equal 1, authors.size
assert_equal 5, authors[0].posts.size
end
def test_eager_association_loading_with_acts_as_tree
roots = TreeMixin.find(:all, :include=>"children", :conditions=>"mixins.parent_id IS NULL", :order=>"mixins.id")
assert_equal [mixins(:tree_1), mixins(:tree2_1), mixins(:tree3_1)], roots
assert_no_queries do
assert_equal 2, roots[0].children.size
assert_equal 0, roots[1].children.size
assert_equal 0, roots[2].children.size
end
end
def test_eager_association_loading_with_cascaded_three_levels_by_ping_pong
firms = Firm.find(:all, :include=>{:account=>{:firm=>:account}}, :order=>"companies.id")
assert_equal 2, firms.size
assert_equal firms.first.account, firms.first.account.firm.account
assert_equal companies(:first_firm).account, assert_no_queries { firms.first.account.firm.account }
assert_equal companies(:first_firm).account.firm.account, assert_no_queries { firms.first.account.firm.account }
end
def test_eager_association_loading_with_has_many_sti
topics = Topic.find(:all, :include => :replies, :order => 'topics.id')
assert_equal [topics(:first), topics(:second)], topics
assert_no_queries do
assert_equal 1, topics[0].replies.size
assert_equal 0, topics[1].replies.size
end
end
def test_eager_association_loading_with_belongs_to_sti
replies = Reply.find(:all, :include => :topic, :order => 'topics.id')
assert_equal [topics(:second)], replies
assert_equal topics(:first), assert_no_queries { replies.first.topic }
end
end
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