require "cases/helper" require 'models/post' require 'models/tagging' require 'models/tag' require 'models/comment' require 'models/author' require 'models/category' require 'models/company' require 'models/person' require 'models/reader' require 'models/owner' require 'models/pet' require 'models/reference' require 'models/job' require 'models/subscriber' require 'models/subscription' require 'models/book' require 'models/developer' require 'models/project' require 'models/member' require 'models/membership' require 'models/club' require 'models/categorization' require 'models/sponsor' class EagerAssociationTest < ActiveRecord::TestCase fixtures :posts, :comments, :authors, :author_addresses, :categories, :categories_posts, :companies, :accounts, :tags, :taggings, :people, :readers, :categorizations, :owners, :pets, :author_favorites, :jobs, :references, :subscribers, :subscriptions, :books, :developers, :projects, :developers_projects, :members, :memberships, :clubs, :sponsors def setup # preheat table existence caches Comment.find_by_id(1) end def test_eager_with_has_one_through_join_model_with_conditions_on_the_through member = Member.find(members(:some_other_guy).id, :include => :favourite_club) assert_nil member.favourite_club end def test_loading_with_one_association posts = Post.find(:all, :include => :comments) post = posts.find { |p| p.id == 1 } assert_equal 2, post.comments.size assert post.comments.include?(comments(:greetings)) post = Post.find(:first, :include => :comments, :conditions => "posts.title = 'Welcome to the weblog'") assert_equal 2, post.comments.size assert post.comments.include?(comments(:greetings)) posts = Post.find(:all, :include => :last_comment) post = posts.find { |p| p.id == 1 } assert_equal Post.find(1).last_comment, post.last_comment end def test_loading_with_one_association_with_non_preload posts = Post.find(:all, :include => :last_comment, :order => 'comments.id DESC') post = posts.find { |p| p.id == 1 } assert_equal Post.find(1).last_comment, post.last_comment end def test_loading_conditions_with_or posts = authors(:david).posts.find(:all, :include => :comments, :conditions => "comments.body like 'Normal%' OR comments.#{QUOTED_TYPE} = 'SpecialComment'") assert_nil posts.detect { |p| p.author_id != authors(:david).id }, "expected to find only david's posts" end def test_with_ordering list = Post.find(:all, :include => :comments, :order => "posts.id DESC") [:other_by_mary, :other_by_bob, :misc_by_mary, :misc_by_bob, :eager_other, :sti_habtm, :sti_post_and_comments, :sti_comments, :authorless, :thinking, :welcome ].each_with_index do |post, index| assert_equal posts(post), list[index] end end def test_with_two_tables_in_from_without_getting_double_quoted posts = Post.select("posts.*").from("authors, posts").eager_load(:comments).where("posts.author_id = authors.id").order("posts.id").to_a assert_equal 2, posts.first.comments.size end def test_loading_with_multiple_associations posts = Post.find(:all, :include => [ :comments, :author, :categories ], :order => "posts.id") assert_equal 2, posts.first.comments.size assert_equal 2, posts.first.categories.size assert posts.first.comments.include?(comments(:greetings)) end def test_duplicate_middle_objects comments = Comment.find :all, :conditions => 'post_id = 1', :include => [:post => :author] assert_no_queries do comments.each {|comment| comment.post.author.name} end end def test_preloading_has_many_in_multiple_queries_with_more_ids_than_database_can_handle Post.connection.expects(:in_clause_length).at_least_once.returns(5) posts = Post.find(:all, :include=>:comments) assert_equal 11, posts.size end def test_preloading_has_many_in_one_queries_when_database_has_no_limit_on_ids_it_can_handle Post.connection.expects(:in_clause_length).at_least_once.returns(nil) posts = Post.find(:all, :include=>:comments) assert_equal 11, posts.size end def test_preloading_habtm_in_multiple_queries_with_more_ids_than_database_can_handle Post.connection.expects(:in_clause_length).at_least_once.returns(5) posts = Post.find(:all, :include=>:categories) assert_equal 11, posts.size end def test_preloading_habtm_in_one_queries_when_database_has_no_limit_on_ids_it_can_handle Post.connection.expects(:in_clause_length).at_least_once.returns(nil) posts = Post.find(:all, :include=>:categories) assert_equal 11, posts.size end def test_load_associated_records_in_one_query_when_adapter_has_no_limit Post.connection.expects(:in_clause_length).at_least_once.returns(nil) post = posts(:welcome) assert_queries(2) do Post.includes(:comments).where(:id => post.id).to_a end end def test_load_associated_records_in_several_queries_when_many_ids_passed Post.connection.expects(:in_clause_length).at_least_once.returns(1) post1, post2 = posts(:welcome), posts(:thinking) assert_queries(3) do Post.includes(:comments).where(:id => [post1.id, post2.id]).to_a end end def test_load_associated_records_in_one_query_when_a_few_ids_passed Post.connection.expects(:in_clause_length).at_least_once.returns(3) post = posts(:welcome) assert_queries(2) do Post.includes(:comments).where(:id => post.id).to_a end end def test_including_duplicate_objects_from_belongs_to popular_post = Post.create!(:title => 'foo', :body => "I like cars!") comment = popular_post.comments.create!(:body => "lol") popular_post.readers.create!(:person => people(:michael)) popular_post.readers.create!(:person => people(:david)) readers = Reader.find(:all, :conditions => ["post_id = ?", popular_post.id], :include => {:post => :comments}) readers.each do |reader| assert_equal [comment], reader.post.comments end end def test_including_duplicate_objects_from_has_many car_post = Post.create!(:title => 'foo', :body => "I like cars!") car_post.categories << categories(:general) car_post.categories << categories(:technology) comment = car_post.comments.create!(:body => "hmm") categories = Category.find(:all, :conditions => ["posts.id=?", car_post.id], :include => {:posts => :comments}) categories.each do |category| assert_equal [comment], category.posts[0].comments end end def test_associations_loaded_for_all_records post = Post.create!(:title => 'foo', :body => "I like cars!") SpecialComment.create!(:body => 'Come on!', :post => post) first_category = Category.create! :name => 'First!', :posts => [post] second_category = Category.create! :name => 'Second!', :posts => [post] categories = Category.where(:id => [first_category.id, second_category.id]).includes(:posts => :special_comments) assert_equal categories.map { |category| category.posts.first.special_comments.loaded? }, [true, true] end def test_finding_with_includes_on_has_many_association_with_same_include_includes_only_once author_id = authors(:david).id author = assert_queries(3) { Author.find(author_id, :include => {:posts_with_comments => :comments}) } # find the author, then find the posts, then find the comments author.posts_with_comments.each do |post_with_comments| assert_equal post_with_comments.comments.length, post_with_comments.comments.count assert_nil post_with_comments.comments.uniq! end end def test_finding_with_includes_on_has_one_assocation_with_same_include_includes_only_once author = authors(:david) post = author.post_about_thinking_with_last_comment last_comment = post.last_comment author = assert_queries(ActiveRecord::IdentityMap.enabled? ? 2 : 3) { Author.find(author.id, :include => {:post_about_thinking_with_last_comment => :last_comment})} # find the author, then find the posts, then find the comments assert_no_queries do assert_equal post, author.post_about_thinking_with_last_comment assert_equal last_comment, author.post_about_thinking_with_last_comment.last_comment end end def test_finding_with_includes_on_belongs_to_association_with_same_include_includes_only_once post = posts(:welcome) author = post.author author_address = author.author_address post = assert_queries(ActiveRecord::IdentityMap.enabled? ? 2 : 3) { Post.find(post.id, :include => {:author_with_address => :author_address}) } # find the post, then find the author, then find the address assert_no_queries do assert_equal author, post.author_with_address assert_equal author_address, post.author_with_address.author_address end end def test_finding_with_includes_on_null_belongs_to_association_with_same_include_includes_only_once post = posts(:welcome) post.update_attributes!(:author => nil) post = assert_queries(1) { Post.find(post.id, :include => {:author_with_address => :author_address}) } # find the post, then find the author which is null so no query for the author or address assert_no_queries do assert_equal nil, post.author_with_address end end def test_finding_with_includes_on_null_belongs_to_polymorphic_association sponsor = sponsors(:moustache_club_sponsor_for_groucho) sponsor.update_attributes!(:sponsorable => nil) sponsor = assert_queries(1) { Sponsor.find(sponsor.id, :include => :sponsorable) } assert_no_queries do assert_equal nil, sponsor.sponsorable end end def test_loading_from_an_association posts = authors(:david).posts.find(:all, :include => :comments, :order => "posts.id") assert_equal 2, posts.first.comments.size end def test_loading_from_an_association_that_has_a_hash_of_conditions assert_nothing_raised do Author.find(:all, :include => :hello_posts_with_hash_conditions) end assert !Author.find(authors(:david).id, :include => :hello_posts_with_hash_conditions).hello_posts.empty? end def test_loading_with_no_associations assert_nil Post.find(posts(:authorless).id, :include => :author).author end def test_nested_loading_with_no_associations assert_nothing_raised do Post.find(posts(:authorless).id, :include => {:author => :author_addresss}) end end def test_nested_loading_through_has_one_association aa = AuthorAddress.find(author_addresses(:david_address).id, :include => {:author => :posts}) assert_equal aa.author.posts.count, aa.author.posts.length end def test_nested_loading_through_has_one_association_with_order aa = AuthorAddress.find(author_addresses(:david_address).id, :include => {:author => :posts}, :order => 'author_addresses.id') assert_equal aa.author.posts.count, aa.author.posts.length end def test_nested_loading_through_has_one_association_with_order_on_association aa = AuthorAddress.find(author_addresses(:david_address).id, :include => {:author => :posts}, :order => 'authors.id') assert_equal aa.author.posts.count, aa.author.posts.length end def test_nested_loading_through_has_one_association_with_order_on_nested_association aa = AuthorAddress.find(author_addresses(:david_address).id, :include => {:author => :posts}, :order => 'posts.id') assert_equal aa.author.posts.count, aa.author.posts.length end def test_nested_loading_through_has_one_association_with_conditions aa = AuthorAddress.find(author_addresses(:david_address).id, :include => {:author => :posts}, :conditions => "author_addresses.id > 0") assert_equal aa.author.posts.count, aa.author.posts.length end def test_nested_loading_through_has_one_association_with_conditions_on_association aa = AuthorAddress.find(author_addresses(:david_address).id, :include => {:author => :posts}, :conditions => "authors.id > 0") assert_equal aa.author.posts.count, aa.author.posts.length end def test_nested_loading_through_has_one_association_with_conditions_on_nested_association aa = AuthorAddress.find(author_addresses(:david_address).id, :include => {:author => :posts}, :conditions => "posts.id > 0") assert_equal aa.author.posts.count, aa.author.posts.length end def test_eager_association_loading_with_belongs_to_and_foreign_keys pets = Pet.find(:all, :include => :owner) assert_equal 3, pets.length end def test_eager_association_loading_with_belongs_to comments = Comment.find(:all, :include => :post) assert_equal 11, comments.length titles = comments.map { |c| c.post.title } assert titles.include?(posts(:welcome).title) assert titles.include?(posts(:sti_post_and_comments).title) end def test_eager_association_loading_with_belongs_to_and_limit comments = Comment.find(:all, :include => :post, :limit => 5, :order => 'comments.id') assert_equal 5, comments.length assert_equal [1,2,3,5,6], comments.collect { |c| c.id } end def test_eager_association_loading_with_belongs_to_and_limit_and_conditions comments = Comment.find(:all, :include => :post, :conditions => 'post_id = 4', :limit => 3, :order => 'comments.id') assert_equal 3, comments.length assert_equal [5,6,7], comments.collect { |c| c.id } end def test_eager_association_loading_with_belongs_to_and_limit_and_offset comments = Comment.find(:all, :include => :post, :limit => 3, :offset => 2, :order => 'comments.id') assert_equal 3, comments.length assert_equal [3,5,6], comments.collect { |c| c.id } end def test_eager_association_loading_with_belongs_to_and_limit_and_offset_and_conditions comments = Comment.find(:all, :include => :post, :conditions => 'post_id = 4', :limit => 3, :offset => 1, :order => 'comments.id') assert_equal 3, comments.length assert_equal [6,7,8], comments.collect { |c| c.id } end def test_eager_association_loading_with_belongs_to_and_limit_and_offset_and_conditions_array comments = Comment.find(:all, :include => :post, :conditions => ['post_id = ?',4], :limit => 3, :offset => 1, :order => 'comments.id') assert_equal 3, comments.length assert_equal [6,7,8], comments.collect { |c| c.id } end def test_eager_association_loading_with_belongs_to_and_conditions_string_with_unquoted_table_name assert_nothing_raised do Comment.find(:all, :include => :post, :conditions => ['posts.id = ?',4]) end end def test_eager_association_loading_with_belongs_to_and_conditions_hash comments = [] assert_nothing_raised do comments = Comment.find(:all, :include => :post, :conditions => {:posts => {:id => 4}}, :limit => 3, :order => 'comments.id') end assert_equal 3, comments.length assert_equal [5,6,7], comments.collect { |c| c.id } assert_no_queries do comments.first.post end end def test_eager_association_loading_with_belongs_to_and_conditions_string_with_quoted_table_name quoted_posts_id= Comment.connection.quote_table_name('posts') + '.' + Comment.connection.quote_column_name('id') assert_nothing_raised do Comment.find(:all, :include => :post, :conditions => ["#{quoted_posts_id} = ?",4]) end end def test_eager_association_loading_with_belongs_to_and_order_string_with_unquoted_table_name assert_nothing_raised do Comment.find(:all, :include => :post, :order => 'posts.id') end end def test_eager_association_loading_with_belongs_to_and_order_string_with_quoted_table_name quoted_posts_id= Comment.connection.quote_table_name('posts') + '.' + Comment.connection.quote_column_name('id') assert_nothing_raised do Comment.find(:all, :include => :post, :order => quoted_posts_id) end end def test_eager_association_loading_with_belongs_to_and_limit_and_multiple_associations posts = Post.find(:all, :include => [:author, :very_special_comment], :limit => 1, :order => 'posts.id') assert_equal 1, posts.length assert_equal [1], posts.collect { |p| p.id } end def test_eager_association_loading_with_belongs_to_and_limit_and_offset_and_multiple_associations posts = Post.find(:all, :include => [:author, :very_special_comment], :limit => 1, :offset => 1, :order => 'posts.id') assert_equal 1, posts.length assert_equal [2], posts.collect { |p| p.id } end def test_eager_association_loading_with_belongs_to_inferred_foreign_key_from_association_name author_favorite = AuthorFavorite.find(:first, :include => :favorite_author) assert_equal authors(:mary), assert_no_queries { author_favorite.favorite_author } end def test_eager_load_belongs_to_quotes_table_and_column_names job = Job.find jobs(:unicyclist).id, :include => :ideal_reference references(:michael_unicyclist) assert_no_queries{ assert_equal references(:michael_unicyclist), job.ideal_reference} end def test_eager_load_has_one_quotes_table_and_column_names michael = Person.find(people(:michael), :include => :favourite_reference) references(:michael_unicyclist) assert_no_queries{ assert_equal references(:michael_unicyclist), michael.favourite_reference} end def test_eager_load_has_many_quotes_table_and_column_names michael = Person.find(people(:michael), :include => :references) references(:michael_magician,:michael_unicyclist) assert_no_queries{ assert_equal references(:michael_magician,:michael_unicyclist), michael.references.sort_by(&:id) } end def test_eager_load_has_many_through_quotes_table_and_column_names michael = Person.find(people(:michael), :include => :jobs) jobs(:magician, :unicyclist) assert_no_queries{ assert_equal jobs(:unicyclist, :magician), michael.jobs.sort_by(&:id) } end def test_eager_load_has_many_with_string_keys subscriptions = subscriptions(:webster_awdr, :webster_rfr) subscriber =Subscriber.find(subscribers(:second).id, :include => :subscriptions) assert_equal subscriptions, subscriber.subscriptions.sort_by(&:id) end def test_string_id_column_joins s = Subscriber.create! do |c| c.id = "PL" end b = Book.create! Subscription.create!(:subscriber_id => "PL", :book_id => b.id) s.reload s.book_ids = s.book_ids end def test_eager_load_has_many_through_with_string_keys books = books(:awdr, :rfr) subscriber = Subscriber.find(subscribers(:second).id, :include => :books) assert_equal books, subscriber.books.sort_by(&:id) end def test_eager_load_belongs_to_with_string_keys subscriber = subscribers(:second) subscription = Subscription.find(subscriptions(:webster_awdr).id, :include => :subscriber) assert_equal subscriber, subscription.subscriber end def test_eager_association_loading_with_explicit_join posts = Post.find(:all, :include => :comments, :joins => "INNER JOIN authors ON posts.author_id = authors.id AND authors.name = 'Mary'", :limit => 1, :order => 'author_id') assert_equal 1, posts.length end def test_eager_with_has_many_through posts_with_comments = people(:michael).posts.find(:all, :include => :comments, :order => 'posts.id') posts_with_author = people(:michael).posts.find(:all, :include => :author, :order => 'posts.id') posts_with_comments_and_author = people(:michael).posts.find(:all, :include => [ :comments, :author ], :order => 'posts.id') assert_equal 2, posts_with_comments.inject(0) { |sum, post| sum += post.comments.size } assert_equal authors(:david), assert_no_queries { posts_with_author.first.author } assert_equal authors(:david), assert_no_queries { posts_with_comments_and_author.first.author } end def test_eager_with_has_many_through_a_belongs_to_association author = authors(:mary) Post.create!(:author => author, :title => "TITLE", :body => "BODY") author.author_favorites.create(:favorite_author_id => 1) author.author_favorites.create(:favorite_author_id => 2) posts_with_author_favorites = author.posts.find(:all, :include => :author_favorites) assert_no_queries { posts_with_author_favorites.first.author_favorites.first.author_id } end def test_eager_with_has_many_through_an_sti_join_model author = Author.find(:first, :include => :special_post_comments, :order => 'authors.id') assert_equal [comments(:does_it_hurt)], assert_no_queries { author.special_post_comments } end def test_eager_with_has_many_through_an_sti_join_model_with_conditions_on_both author = Author.find(:first, :include => :special_nonexistant_post_comments, :order => 'authors.id') assert_equal [], author.special_nonexistant_post_comments end def test_eager_with_has_many_through_join_model_with_conditions assert_equal Author.find(:first, :include => :hello_post_comments, :order => 'authors.id').hello_post_comments.sort_by(&:id), Author.find(:first, :order => 'authors.id').hello_post_comments.sort_by(&:id) end def test_eager_with_has_many_through_join_model_with_conditions_on_top_level assert_equal comments(:more_greetings), Author.find(authors(:david).id, :include => :comments_with_order_and_conditions).comments_with_order_and_conditions.first end def test_eager_with_has_many_through_join_model_with_include author_comments = Author.find(authors(:david).id, :include => :comments_with_include).comments_with_include.to_a assert_no_queries do author_comments.first.post.title end end def test_eager_with_has_many_through_with_conditions_join_model_with_include post_tags = Post.find(posts(:welcome).id).misc_tags eager_post_tags = Post.find(1, :include => :misc_tags).misc_tags assert_equal post_tags, eager_post_tags end def test_eager_with_has_many_through_join_model_ignores_default_includes assert_nothing_raised do authors(:david).comments_on_posts_with_default_include.to_a end end def test_eager_with_has_many_and_limit posts = Post.find(:all, :order => 'posts.id asc', :include => [ :author, :comments ], :limit => 2) assert_equal 2, posts.size assert_equal 3, posts.inject(0) { |sum, post| sum += post.comments.size } end def test_eager_with_has_many_and_limit_and_conditions if current_adapter?(:OpenBaseAdapter) posts = Post.find(:all, :include => [ :author, :comments ], :limit => 2, :conditions => "FETCHBLOB(posts.body) = 'hello'", :order => "posts.id") else posts = Post.find(:all, :include => [ :author, :comments ], :limit => 2, :conditions => "posts.body = 'hello'", :order => "posts.id") end assert_equal 2, posts.size assert_equal [4,5], posts.collect { |p| p.id } end def test_eager_with_has_many_and_limit_and_conditions_array if current_adapter?(:OpenBaseAdapter) posts = Post.find(:all, :include => [ :author, :comments ], :limit => 2, :conditions => [ "FETCHBLOB(posts.body) = ?", 'hello' ], :order => "posts.id") else posts = Post.find(:all, :include => [ :author, :comments ], :limit => 2, :conditions => [ "posts.body = ?", 'hello' ], :order => "posts.id") end assert_equal 2, posts.size assert_equal [4,5], posts.collect { |p| p.id } end def test_eager_with_has_many_and_limit_and_conditions_array_on_the_eagers posts = Post.find(:all, :include => [ :author, :comments ], :limit => 2, :conditions => [ "authors.name = ?", 'David' ]) assert_equal 2, posts.size count = Post.count(:include => [ :author, :comments ], :limit => 2, :conditions => [ "authors.name = ?", 'David' ]) assert_equal count, posts.size end def test_eager_with_has_many_and_limit_and_high_offset posts = Post.find(:all, :include => [ :author, :comments ], :limit => 2, :offset => 10, :conditions => [ "authors.name = ?", 'David' ]) assert_equal 0, posts.size end def test_eager_with_has_many_and_limit_and_high_offset_and_multiple_array_conditions assert_queries(1) do posts = Post.find(:all, :include => [ :author, :comments ], :limit => 2, :offset => 10, :conditions => [ "authors.name = ? and comments.body = ?", 'David', 'go crazy' ]) assert_equal 0, posts.size end end def test_eager_with_has_many_and_limit_and_high_offset_and_multiple_hash_conditions assert_queries(1) do posts = Post.find(:all, :include => [ :author, :comments ], :limit => 2, :offset => 10, :conditions => { 'authors.name' => 'David', 'comments.body' => 'go crazy' }) assert_equal 0, posts.size end end def test_count_eager_with_has_many_and_limit_and_high_offset posts = Post.count(:all, :include => [ :author, :comments ], :limit => 2, :offset => 10, :conditions => [ "authors.name = ?", 'David' ]) assert_equal 0, posts end def test_eager_with_has_many_and_limit_with_no_results posts = Post.find(:all, :include => [ :author, :comments ], :limit => 2, :conditions => "posts.title = 'magic forest'") assert_equal 0, posts.size end def test_eager_count_performed_on_a_has_many_association_with_multi_table_conditional author = authors(:david) author_posts_without_comments = author.posts.select { |post| post.comments.blank? } assert_equal author_posts_without_comments.size, author.posts.count(:all, :include => :comments, :conditions => 'comments.id is null') end def test_eager_count_performed_on_a_has_many_through_association_with_multi_table_conditional person = people(:michael) person_posts_without_comments = person.posts.select { |post| post.comments.blank? } assert_equal person_posts_without_comments.size, person.posts_with_no_comments.count end def test_eager_with_has_and_belongs_to_many_and_limit posts = Post.find(:all, :include => :categories, :order => "posts.id", :limit => 3) assert_equal 3, posts.size assert_equal 2, posts[0].categories.size assert_equal 1, posts[1].categories.size assert_equal 0, posts[2].categories.size assert posts[0].categories.include?(categories(:technology)) assert posts[1].categories.include?(categories(:general)) end # This is only really relevant when the identity map is off. Since the preloader for habtm # gets raw row hashes from the database and then instantiates them, this test ensures that # it only instantiates one actual object per record from the database. def test_has_and_belongs_to_many_should_not_instantiate_same_records_multiple_times categories = Category.includes(:posts) general = categories.find { |c| c == categories(:general) } technology = categories.find { |c| c == categories(:technology) } post1 = general.posts.to_a.find { |p| p == posts(:welcome) } post2 = technology.posts.to_a.find { |p| p == posts(:welcome) } assert_equal post1.object_id, post2.object_id end def test_eager_with_has_many_and_limit_and_conditions_on_the_eagers posts = authors(:david).posts.find(:all, :include => :comments, :conditions => "comments.body like 'Normal%' OR comments.#{QUOTED_TYPE}= 'SpecialComment'", :limit => 2 ) assert_equal 2, posts.size count = Post.count( :include => [ :comments, :author ], :conditions => "authors.name = 'David' AND (comments.body like 'Normal%' OR comments.#{QUOTED_TYPE}= 'SpecialComment')", :limit => 2 ) assert_equal count, posts.size end def test_eager_with_has_many_and_limit_and_scoped_conditions_on_the_eagers posts = nil Post.send(:with_scope, :find => { :include => :comments, :conditions => "comments.body like 'Normal%' OR comments.#{QUOTED_TYPE}= 'SpecialComment'" }) do posts = authors(:david).posts.find(:all, :limit => 2) assert_equal 2, posts.size end Post.send(:with_scope, :find => { :include => [ :comments, :author ], :conditions => "authors.name = 'David' AND (comments.body like 'Normal%' OR comments.#{QUOTED_TYPE}= 'SpecialComment')" }) do count = Post.count(:limit => 2) assert_equal count, posts.size end end def test_eager_with_has_many_and_limit_and_scoped_and_explicit_conditions_on_the_eagers Post.send(:with_scope, :find => { :conditions => "1=1" }) do posts = authors(:david).posts.find(:all, :include => :comments, :conditions => "comments.body like 'Normal%' OR comments.#{QUOTED_TYPE}= 'SpecialComment'", :limit => 2 ) assert_equal 2, posts.size count = Post.count( :include => [ :comments, :author ], :conditions => "authors.name = 'David' AND (comments.body like 'Normal%' OR comments.#{QUOTED_TYPE}= 'SpecialComment')", :limit => 2 ) assert_equal count, posts.size end end def test_eager_with_scoped_order_using_association_limiting_without_explicit_scope posts_with_explicit_order = Post.find(:all, :conditions => 'comments.id is not null', :include => :comments, :order => 'posts.id DESC', :limit => 2) posts_with_scoped_order = Post.send(:with_scope, :find => {:order => 'posts.id DESC'}) do Post.find(:all, :conditions => 'comments.id is not null', :include => :comments, :limit => 2) end assert_equal posts_with_explicit_order, posts_with_scoped_order end def test_eager_association_loading_with_habtm posts = Post.find(:all, :include => :categories, :order => "posts.id") assert_equal 2, posts[0].categories.size assert_equal 1, posts[1].categories.size assert_equal 0, posts[2].categories.size assert posts[0].categories.include?(categories(:technology)) assert posts[1].categories.include?(categories(:general)) end def test_eager_with_inheritance SpecialPost.find(:all, :include => [ :comments ]) end def test_eager_has_one_with_association_inheritance post = Post.find(4, :include => [ :very_special_comment ]) assert_equal "VerySpecialComment", post.very_special_comment.class.to_s end def test_eager_has_many_with_association_inheritance post = Post.find(4, :include => [ :special_comments ]) post.special_comments.each do |special_comment| assert special_comment.is_a?(SpecialComment) end end def test_eager_habtm_with_association_inheritance post = Post.find(6, :include => [ :special_categories ]) assert_equal 1, post.special_categories.size post.special_categories.each do |special_category| assert_equal "SpecialCategory", special_category.class.to_s end end def test_eager_with_has_one_dependent_does_not_destroy_dependent assert_not_nil companies(:first_firm).account f = Firm.find(:first, :include => :account, :conditions => ["companies.name = ?", "37signals"]) assert_not_nil f.account assert_equal companies(:first_firm, :reload).account, f.account end def test_eager_with_multi_table_conditional_properly_counts_the_records_when_using_size author = authors(:david) posts_with_no_comments = author.posts.select { |post| post.comments.blank? } assert_equal posts_with_no_comments.size, author.posts_with_no_comments.size assert_equal posts_with_no_comments, author.posts_with_no_comments end def test_eager_with_invalid_association_reference assert_raise(ActiveRecord::ConfigurationError, "Association was not found; perhaps you misspelled it? You specified :include => :monkeys") { Post.find(6, :include=> :monkeys ) } assert_raise(ActiveRecord::ConfigurationError, "Association was not found; perhaps you misspelled it? You specified :include => :monkeys") { Post.find(6, :include=>[ :monkeys ]) } assert_raise(ActiveRecord::ConfigurationError, "Association was not found; perhaps you misspelled it? You specified :include => :monkeys") { Post.find(6, :include=>[ 'monkeys' ]) } assert_raise(ActiveRecord::ConfigurationError, "Association was not found; perhaps you misspelled it? You specified :include => :monkeys, :elephants") { Post.find(6, :include=>[ :monkeys, :elephants ]) } end def test_eager_with_default_scope developer = EagerDeveloperWithDefaultScope.where(:name => 'David').first projects = Project.order(:id).all assert_no_queries do assert_equal(projects, developer.projects) end end def test_eager_with_default_scope_as_class_method developer = EagerDeveloperWithClassMethodDefaultScope.where(:name => 'David').first projects = Project.order(:id).all assert_no_queries do assert_equal(projects, developer.projects) end end def test_eager_with_default_scope_as_lambda developer = EagerDeveloperWithLambdaDefaultScope.where(:name => 'David').first projects = Project.order(:id).all assert_no_queries do assert_equal(projects, developer.projects) end end def test_eager_with_default_scope_as_block developer = EagerDeveloperWithBlockDefaultScope.where(:name => 'David').first projects = Project.order(:id).all assert_no_queries do assert_equal(projects, developer.projects) end end def test_eager_with_default_scope_as_callable developer = EagerDeveloperWithCallableDefaultScope.where(:name => 'David').first projects = Project.order(:id).all assert_no_queries do assert_equal(projects, developer.projects) end end def find_all_ordered(className, include=nil) className.find(:all, :order=>"#{className.table_name}.#{className.primary_key}", :include=>include) end def test_limited_eager_with_order assert_equal posts(:thinking, :sti_comments), Post.find(:all, :include => [:author, :comments], :conditions => "authors.name = 'David'", :order => 'UPPER(posts.title)', :limit => 2, :offset => 1) assert_equal posts(:sti_post_and_comments, :sti_comments), Post.find(:all, :include => [:author, :comments], :conditions => "authors.name = 'David'", :order => 'UPPER(posts.title) DESC', :limit => 2, :offset => 1) end def test_limited_eager_with_multiple_order_columns assert_equal posts(:thinking, :sti_comments), Post.find(:all, :include => [:author, :comments], :conditions => "authors.name = 'David'", :order => ['UPPER(posts.title)', 'posts.id'], :limit => 2, :offset => 1) assert_equal posts(:sti_post_and_comments, :sti_comments), Post.find(:all, :include => [:author, :comments], :conditions => "authors.name = 'David'", :order => ['UPPER(posts.title) DESC', 'posts.id'], :limit => 2, :offset => 1) end def test_limited_eager_with_numeric_in_association assert_equal people(:david, :susan), Person.find(:all, :include => [:readers, :primary_contact, :number1_fan], :conditions => "number1_fans_people.first_name like 'M%'", :order => 'people.id', :limit => 2, :offset => 0) end def test_preload_with_interpolation post = Post.includes(:comments_with_interpolated_conditions).find(posts(:welcome).id) assert_equal [comments(:greetings)], post.comments_with_interpolated_conditions post = Post.joins(:comments_with_interpolated_conditions).find(posts(:welcome).id) assert_equal [comments(:greetings)], post.comments_with_interpolated_conditions end def test_polymorphic_type_condition post = Post.find(posts(:thinking).id, :include => :taggings) assert post.taggings.include?(taggings(:thinking_general)) post = SpecialPost.find(posts(:thinking).id, :include => :taggings) assert post.taggings.include?(taggings(:thinking_general)) end def test_eager_with_multiple_associations_with_same_table_has_many_and_habtm # Eager includes of has many and habtm associations aren't necessarily sorted in the same way def assert_equal_after_sort(item1, item2, item3 = nil) assert_equal(item1.sort{|a,b| a.id <=> b.id}, item2.sort{|a,b| a.id <=> b.id}) assert_equal(item3.sort{|a,b| a.id <=> b.id}, item2.sort{|a,b| a.id <=> b.id}) if item3 end # Test regular association, association with conditions, association with # STI, and association with conditions assured not to be true post_types = [:posts, :other_posts, :special_posts] # test both has_many and has_and_belongs_to_many [Author, Category].each do |className| d1 = find_all_ordered(className) # test including all post types at once d2 = find_all_ordered(className, post_types) d1.each_index do |i| assert_equal(d1[i], d2[i]) assert_equal_after_sort(d1[i].posts, d2[i].posts) post_types[1..-1].each do |post_type| # test including post_types together d3 = find_all_ordered(className, [:posts, post_type]) assert_equal(d1[i], d3[i]) assert_equal_after_sort(d1[i].posts, d3[i].posts) assert_equal_after_sort(d1[i].send(post_type), d2[i].send(post_type), d3[i].send(post_type)) end end end end def test_eager_with_multiple_associations_with_same_table_has_one d1 = find_all_ordered(Firm) d2 = find_all_ordered(Firm, :account) d1.each_index do |i| assert_equal(d1[i], d2[i]) assert_equal(d1[i].account, d2[i].account) end end def test_eager_with_multiple_associations_with_same_table_belongs_to firm_types = [:firm, :firm_with_basic_id, :firm_with_other_name, :firm_with_condition] d1 = find_all_ordered(Client) d2 = find_all_ordered(Client, firm_types) d1.each_index do |i| assert_equal(d1[i], d2[i]) firm_types.each { |type| assert_equal(d1[i].send(type), d2[i].send(type)) } end end def test_eager_with_valid_association_as_string_not_symbol assert_nothing_raised { Post.find(:all, :include => 'comments') } end def test_eager_with_floating_point_numbers assert_queries(2) do # Before changes, the floating point numbers will be interpreted as table names and will cause this to run in one query Comment.find :all, :conditions => "123.456 = 123.456", :include => :post end end def test_preconfigured_includes_with_belongs_to author = posts(:welcome).author_with_posts assert_no_queries {assert_equal 5, author.posts.size} end def test_preconfigured_includes_with_has_one comment = posts(:sti_comments).very_special_comment_with_post assert_no_queries {assert_equal posts(:sti_comments), comment.post} end def test_preconfigured_includes_with_has_many posts = authors(:david).posts_with_comments one = posts.detect { |p| p.id == 1 } assert_no_queries do assert_equal 5, posts.size assert_equal 2, one.comments.size end end def test_preconfigured_includes_with_habtm posts = authors(:david).posts_with_categories one = posts.detect { |p| p.id == 1 } assert_no_queries do assert_equal 5, posts.size assert_equal 2, one.categories.size end end def test_preconfigured_includes_with_has_many_and_habtm posts = authors(:david).posts_with_comments_and_categories one = posts.detect { |p| p.id == 1 } assert_no_queries do assert_equal 5, posts.size assert_equal 2, one.comments.size assert_equal 2, one.categories.size end end def test_count_with_include if current_adapter?(:SybaseAdapter) assert_equal 3, authors(:david).posts_with_comments.count(:conditions => "len(comments.body) > 15") elsif current_adapter?(:OpenBaseAdapter) assert_equal 3, authors(:david).posts_with_comments.count(:conditions => "length(FETCHBLOB(comments.body)) > 15") else assert_equal 3, authors(:david).posts_with_comments.count(:conditions => "length(comments.body) > 15") end end def test_load_with_sti_sharing_association assert_queries(2) do #should not do 1 query per subclass Comment.find :all, :include => :post end end def test_conditions_on_join_table_with_include_and_limit assert_equal 3, Developer.find(:all, :include => 'projects', :conditions => 'developers_projects.access_level = 1', :limit => 5).size end def test_dont_create_temporary_active_record_instances Developer.instance_count = 0 developers = Developer.find(:all, :include => 'projects', :conditions => 'developers_projects.access_level = 1', :limit => 5).to_a assert_equal developers.count, Developer.instance_count end def test_order_on_join_table_with_include_and_limit assert_equal 5, Developer.find(:all, :include => 'projects', :order => 'developers_projects.joined_on DESC', :limit => 5).size end def test_eager_loading_with_order_on_joined_table_preloads posts = assert_queries(2) do Post.find(:all, :joins => :comments, :include => :author, :order => 'comments.id DESC') end assert_equal posts(:eager_other), posts[1] assert_equal authors(:mary), assert_no_queries { posts[1].author} end def test_eager_loading_with_conditions_on_joined_table_preloads posts = assert_queries(2) do Post.find(:all, :select => 'distinct posts.*', :include => :author, :joins => [:comments], :conditions => "comments.body like 'Thank you%'", :order => 'posts.id') end assert_equal [posts(:welcome)], posts assert_equal authors(:david), assert_no_queries { posts[0].author} posts = assert_queries(ActiveRecord::IdentityMap.enabled? ? 1 : 2) do Post.find(:all, :select => 'distinct posts.*', :include => :author, :joins => [:comments], :conditions => "comments.body like 'Thank you%'", :order => 'posts.id') end assert_equal [posts(:welcome)], posts assert_equal authors(:david), assert_no_queries { posts[0].author} posts = assert_queries(ActiveRecord::IdentityMap.enabled? ? 1 : 2) do Post.find(:all, :include => :author, :joins => {:taggings => :tag}, :conditions => "tags.name = 'General'", :order => 'posts.id') end assert_equal posts(:welcome, :thinking), posts posts = assert_queries(ActiveRecord::IdentityMap.enabled? ? 1 : 2) do Post.find(:all, :include => :author, :joins => {:taggings => {:tag => :taggings}}, :conditions => "taggings_tags.super_tag_id=2", :order => 'posts.id') end assert_equal posts(:welcome, :thinking), posts end def test_eager_loading_with_conditions_on_string_joined_table_preloads posts = assert_queries(2) do Post.find(:all, :select => 'distinct posts.*', :include => :author, :joins => "INNER JOIN comments on comments.post_id = posts.id", :conditions => "comments.body like 'Thank you%'", :order => 'posts.id') end assert_equal [posts(:welcome)], posts assert_equal authors(:david), assert_no_queries { posts[0].author} posts = assert_queries(ActiveRecord::IdentityMap.enabled? ? 1 : 2) do Post.find(:all, :select => 'distinct posts.*', :include => :author, :joins => ["INNER JOIN comments on comments.post_id = posts.id"], :conditions => "comments.body like 'Thank you%'", :order => 'posts.id') end assert_equal [posts(:welcome)], posts assert_equal authors(:david), assert_no_queries { posts[0].author} end def test_eager_loading_with_select_on_joined_table_preloads posts = assert_queries(2) do Post.find(:all, :select => 'posts.*, authors.name as author_name', :include => :comments, :joins => :author, :order => 'posts.id') end assert_equal 'David', posts[0].author_name assert_equal posts(:welcome).comments, assert_no_queries { posts[0].comments} end def test_eager_loading_with_conditions_on_join_model_preloads Author.columns authors = assert_queries(2) do Author.find(:all, :include => :author_address, :joins => :comments, :conditions => "posts.title like 'Welcome%'") end assert_equal authors(:david), authors[0] assert_equal author_addresses(:david_address), authors[0].author_address end def test_preload_belongs_to_uses_exclusive_scope people = Person.males.find(:all, :include => :primary_contact) assert_not_equal people.length, 0 people.each do |person| assert_no_queries {assert_not_nil person.primary_contact} assert_equal Person.find(person.id).primary_contact, person.primary_contact end end def test_preload_has_many_uses_exclusive_scope people = Person.males.find :all, :include => :agents people.each do |person| assert_equal Person.find(person.id).agents, person.agents end end def test_preload_has_many_using_primary_key expected = Firm.find(:first).clients_using_primary_key.to_a firm = Firm.find :first, :include => :clients_using_primary_key assert_no_queries do assert_equal expected, firm.clients_using_primary_key end end def test_preload_has_many_with_association_condition_and_default_scope post = Post.create!(:title => 'Beaches', :body => "I like beaches!") Reader.create! :person => people(:david), :post => post LazyReader.create! :person => people(:susan), :post => post assert_equal 1, post.lazy_readers.to_a.size assert_equal 2, post.lazy_readers_skimmers_or_not.to_a.size post_with_readers = Post.includes(:lazy_readers_skimmers_or_not).find(post.id) assert_equal 2, post_with_readers.lazy_readers_skimmers_or_not.to_a.size end def test_include_has_many_using_primary_key expected = Firm.find(1).clients_using_primary_key.sort_by(&:name) # Oracle adapter truncates alias to 30 characters if current_adapter?(:OracleAdapter) firm = Firm.find 1, :include => :clients_using_primary_key, :order => 'clients_using_primary_keys_companies'[0,30]+'.name' else firm = Firm.find 1, :include => :clients_using_primary_key, :order => 'clients_using_primary_keys_companies.name' end assert_no_queries do assert_equal expected, firm.clients_using_primary_key end end def test_preload_has_one_using_primary_key expected = accounts(:signals37) firm = Firm.find :first, :include => :account_using_primary_key, :order => 'companies.id' assert_no_queries do assert_equal expected, firm.account_using_primary_key end end def test_include_has_one_using_primary_key expected = accounts(:signals37) firm = Firm.find(:all, :include => :account_using_primary_key, :order => 'accounts.id').detect {|f| f.id == 1} assert_no_queries do assert_equal expected, firm.account_using_primary_key end end def test_preloading_empty_belongs_to c = Client.create!(:name => 'Foo', :client_of => Company.maximum(:id) + 1) client = assert_queries(2) { Client.preload(:firm).find(c.id) } assert_no_queries { assert_nil client.firm } end def test_preloading_empty_belongs_to_polymorphic t = Tagging.create!(:taggable_type => 'Post', :taggable_id => Post.maximum(:id) + 1, :tag => tags(:general)) tagging = assert_queries(ActiveRecord::IdentityMap.enabled? ? 1 : 2) { Tagging.preload(:taggable).find(t.id) } assert_no_queries { assert_nil tagging.taggable } end def test_preloading_through_empty_belongs_to c = Client.create!(:name => 'Foo', :client_of => Company.maximum(:id) + 1) client = assert_queries(2) { Client.preload(:accounts).find(c.id) } assert_no_queries { assert client.accounts.empty? } end def test_preloading_has_many_through_with_uniq mary = Author.includes(:unique_categorized_posts).where(:id => authors(:mary).id).first assert_equal 1, mary.unique_categorized_posts.length assert_equal 1, mary.unique_categorized_post_ids.length end def test_preloading_polymorphic_with_custom_foreign_type sponsor = sponsors(:moustache_club_sponsor_for_groucho) groucho = members(:groucho) sponsor = assert_queries(2) { Sponsor.includes(:thing).where(:id => sponsor.id).first } assert_no_queries { assert_equal groucho, sponsor.thing } end def test_joins_with_includes_should_preload_via_joins post = assert_queries(1) { Post.includes(:comments).joins(:comments).order('posts.id desc').to_a.first } assert_queries(0) do assert_not_equal 0, post.comments.to_a.count end end def test_join_eager_with_empty_order_should_generate_valid_sql assert_nothing_raised(ActiveRecord::StatementInvalid) do Post.includes(:comments).order("").where(:comments => {:body => "Thank you for the welcome"}).first end end def test_join_eager_with_nil_order_should_generate_valid_sql assert_nothing_raised(ActiveRecord::StatementInvalid) do Post.includes(:comments).order(nil).where(:comments => {:body => "Thank you for the welcome"}).first end end test "preloading does not cache has many association subset when preloaded with a through association" do author = Author.order(:id).includes(:comments_with_order_and_conditions, :posts).first assert_no_queries { assert_equal 2, author.comments_with_order_and_conditions.size } assert_no_queries { assert_equal 5, author.posts.size, "should not cache a subset of the association" } end end