require 'abstract_unit' require 'fixtures/post' require 'fixtures/comment' require 'fixtures/author' require 'fixtures/category' require 'fixtures/company' class EagerAssociationTest < Test::Unit::TestCase fixtures :posts, :comments, :authors, :categories, :categories_posts, :companies, :accounts 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.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_multiple_associations posts = Post.find(:all, :include => [:author, :very_special_comment], :limit => 1) assert_equal 1, posts.length assert_equal [4], 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) assert_equal 0, posts.length assert_equal [], posts 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_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_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 assert_raises(ArgumentError) do posts = authors(:david).posts.find(:all, :include => :comments, :conditions => "comments.body like 'Normal%' OR comments.type = 'SpecialComment'", :limit => 2 ) 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_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 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 assert_equal 2, posts.first.comments.size end def test_preconfigured_includes_with_habtm posts = authors(:david).posts_with_categories assert_equal 2, posts.first.categories.size end def test_preconfigured_includes_with_has_many_and_habtm posts = authors(:david).posts_with_comments_and_categories assert_equal 2, posts.first.comments.size assert_equal 2, posts.first.categories.size end end