require 'abstract_unit' require 'fixtures/post' require 'fixtures/comment' require 'fixtures/author' require 'fixtures/category' require 'fixtures/company' require 'fixtures/person' require 'fixtures/reader' class EagerAssociationTest < Test::Unit::TestCase fixtures :posts, :comments, :authors, :categories, :categories_posts, :companies, :accounts, :tags, :people, :readers 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)) 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") [: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_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_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_with_no_associations assert_nil Post.find(posts(:authorless).id, :include => :author).author end def test_eager_association_loading_with_belongs_to comments = Comment.find(:all, :include => :post) assert_equal 10, 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_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_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) posts_with_author = people(:michael).posts.find(:all, :include => :author ) posts_with_comments_and_author = people(:michael).posts.find(:all, :include => [ :comments, :author ]) 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_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_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_ond_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_count_eager_with_has_many_and_limit_ond_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_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 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.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.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.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_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 posts = 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_equal "SpecialComment", special_comment.class.to_s 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_raises(ActiveRecord::ConfigurationError, "Association was not found; perhaps you misspelled it? You specified :include => :monkeys") { post = Post.find(6, :include=> :monkeys ) } assert_raises(ActiveRecord::ConfigurationError, "Association was not found; perhaps you misspelled it? You specified :include => :monkeys") { post = Post.find(6, :include=>[ :monkeys ]) } assert_raises(ActiveRecord::ConfigurationError, "Association was not found; perhaps you misspelled it? You specified :include => :monkeys") { post = Post.find(6, :include=>[ 'monkeys' ]) } assert_raises(ActiveRecord::ConfigurationError, "Association was not found; perhaps you misspelled it? You specified :include => :monkeys, :elephants") { post = Post.find(6, :include=>[ :monkeys, :elephants ]) } 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_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_preconfigured_includes_with_belongs_to author = posts(:welcome).author_with_posts assert_equal 5, author.posts.size end def test_preconfigured_includes_with_has_one comment = posts(:sti_comments).very_special_comment_with_post 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_equal 5, posts.size assert_equal 2, one.comments.size end def test_preconfigured_includes_with_habtm posts = authors(:david).posts_with_categories one = posts.detect { |p| p.id == 1 } assert_equal 5, posts.size assert_equal 2, one.categories.size 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_equal 5, posts.size assert_equal 2, one.comments.size assert_equal 2, one.categories.size end def test_count_with_include if current_adapter?(:SQLServerAdapter, :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 end