require "cases/helper" require 'models/tag' require 'models/tagging' require 'models/post' require 'models/topic' require 'models/comment' require 'models/reply' require 'models/author' require 'models/comment' require 'models/entrant' require 'models/developer' require 'models/company' class RelationTest < ActiveRecord::TestCase fixtures :authors, :topics, :entrants, :developers, :companies, :developers_projects, :accounts, :categories, :categorizations, :posts, :comments, :taggings def test_scoped topics = Topic.scoped assert_kind_of ActiveRecord::Relation, topics assert_equal 4, topics.size end def test_scoped_all topics = Topic.scoped.all assert_kind_of Array, topics assert_no_queries { assert_equal 4, topics.size } end def test_loaded_all topics = Topic.scoped assert_queries(1) do 2.times { assert_equal 4, topics.all.size } end assert topics.loaded? end def test_scoped_first topics = Topic.scoped.order('id ASC') assert_queries(1) do 2.times { assert_equal "The First Topic", topics.first.title } end assert ! topics.loaded? end def test_loaded_first topics = Topic.scoped.order('id ASC') assert_queries(1) do topics.all # force load 2.times { assert_equal "The First Topic", topics.first.title } end assert topics.loaded? end def test_reload topics = Topic.scoped assert_queries(1) do 2.times { topics.to_a } end assert topics.loaded? topics.reload assert ! topics.loaded? assert_queries(1) { topics.to_a } end def test_finding_with_conditions assert_equal ["David"], Author.where(:name => 'David').map(&:name) assert_equal ['Mary'], Author.where(["name = ?", 'Mary']).map(&:name) assert_equal ['Mary'], Author.where("name = ?", 'Mary').map(&:name) end def test_finding_with_order topics = Topic.order('id') assert_equal 4, topics.to_a.size assert_equal topics(:first).title, topics.first.title end def test_finding_with_order_and_take entrants = Entrant.order("id ASC").limit(2).to_a assert_equal 2, entrants.size assert_equal entrants(:first).name, entrants.first.name end def test_finding_with_order_limit_and_offset entrants = Entrant.order("id ASC").limit(2).offset(1) assert_equal 2, entrants.to_a.size assert_equal entrants(:second).name, entrants.first.name entrants = Entrant.order("id ASC").limit(2).offset(2) assert_equal 1, entrants.to_a.size assert_equal entrants(:third).name, entrants.first.name end def test_finding_with_group developers = Developer.group("salary").select("salary").to_a assert_equal 4, developers.size assert_equal 4, developers.map(&:salary).uniq.size end def test_finding_with_hash_conditions_on_joined_table firms = DependentFirm.joins(:account).where({:name => 'RailsCore', :accounts => { :credit_limit => 55..60 }}).to_a assert_equal 1, firms.size assert_equal companies(:rails_core), firms.first end def test_find_all_with_join developers_on_project_one = Developer.joins('LEFT JOIN developers_projects ON developers.id = developers_projects.developer_id'). where('project_id=1').to_a assert_equal 3, developers_on_project_one.length developer_names = developers_on_project_one.map { |d| d.name } assert developer_names.include?('David') assert developer_names.include?('Jamis') end def test_find_on_hash_conditions assert_equal Topic.find(:all, :conditions => {:approved => false}), Topic.where({ :approved => false }).to_a end def test_joins_with_string_array person_with_reader_and_post = Post.joins([ "INNER JOIN categorizations ON categorizations.post_id = posts.id", "INNER JOIN categories ON categories.id = categorizations.category_id AND categories.type = 'SpecialCategory'" ] ).to_a assert_equal 1, person_with_reader_and_post.size end def test_scoped_responds_to_delegated_methods relation = Topic.scoped ["map", "uniq", "sort", "insert", "delete", "update"].each do |method| assert relation.respond_to?(method), "Topic.scoped should respond to #{method.inspect}" end end def test_respond_to_private_arel_methods relation = Topic.scoped assert ! relation.respond_to?(:matching_attributes) assert relation.respond_to?(:matching_attributes, true) end def test_respond_to_dynamic_finders relation = Topic.scoped ["find_by_title", "find_by_title_and_author_name", "find_or_create_by_title", "find_or_initialize_by_title_and_author_name"].each do |method| assert relation.respond_to?(method), "Topic.scoped should respond to #{method.inspect}" end end def test_find_with_readonly_option Developer.scoped.each { |d| assert !d.readonly? } Developer.scoped.readonly.each { |d| assert d.readonly? } end def test_eager_association_loading_of_stis_with_multiple_references authors = Author.eager_load(:posts => { :special_comments => { :post => [ :special_comments, :very_special_comment ] } }). order('comments.body, very_special_comments_posts.body').where('posts.id = 4').to_a assert_equal [authors(:david)], authors assert_no_queries do authors.first.posts.first.special_comments.first.post.special_comments authors.first.posts.first.special_comments.first.post.very_special_comment end end def test_find_with_included_associations assert_queries(2) do posts = Post.preload(:comments) assert posts.first.comments.first end assert_queries(2) do posts = Post.preload(:comments).to_a assert posts.first.comments.first end assert_queries(2) do posts = Post.preload(:author) assert posts.first.author end assert_queries(2) do posts = Post.preload(:author).to_a assert posts.first.author end assert_queries(3) do posts = Post.preload(:author, :comments).to_a assert posts.first.author assert posts.first.comments.first end end def test_default_scope_with_conditions_string assert_equal Developer.find_all_by_name('David').map(&:id).sort, DeveloperCalledDavid.scoped.map(&:id).sort assert_equal nil, DeveloperCalledDavid.create!.name end def test_default_scope_with_conditions_hash assert_equal Developer.find_all_by_name('Jamis').map(&:id).sort, DeveloperCalledJamis.scoped.map(&:id).sort assert_equal 'Jamis', DeveloperCalledJamis.create!.name end def test_default_scoping_finder_methods developers = DeveloperCalledDavid.order('id').map(&:id).sort assert_equal Developer.find_all_by_name('David').map(&:id).sort, developers end def test_loading_with_one_association posts = Post.preload(:comments) post = posts.find { |p| p.id == 1 } assert_equal 2, post.comments.size assert post.comments.include?(comments(:greetings)) post = Post.where("posts.title = 'Welcome to the weblog'").preload(:comments).first assert_equal 2, post.comments.size assert post.comments.include?(comments(:greetings)) posts = Post.preload(: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.eager_load(: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_dynamic_find_by_attributes david = authors(:david) author = Author.preload(:taggings).find_by_id(david.id) expected_taggings = taggings(:welcome_general, :thinking_general) assert_no_queries do assert_equal expected_taggings, author.taggings.uniq.sort_by { |t| t.id } end authors = Author.scoped assert_equal david, authors.find_by_id_and_name(david.id, david.name) assert_equal david, authors.find_by_id_and_name!(david.id, david.name) end def test_dynamic_find_by_attributes_bang author = Author.scoped.find_by_id!(authors(:david).id) assert_equal "David", author.name assert_raises(ActiveRecord::RecordNotFound) { Author.scoped.find_by_id_and_name!(20, 'invalid') } end def test_dynamic_find_all_by_attributes authors = Author.scoped davids = authors.find_all_by_name('David') assert_kind_of Array, davids assert_equal [authors(:david)], davids end def test_dynamic_find_or_initialize_by_attributes authors = Author.scoped lifo = authors.find_or_initialize_by_name('Lifo') assert_equal "Lifo", lifo.name assert lifo.new_record? assert_equal authors(:david), authors.find_or_initialize_by_name(:name => 'David') end def test_dynamic_find_or_create_by_attributes authors = Author.scoped lifo = authors.find_or_create_by_name('Lifo') assert_equal "Lifo", lifo.name assert ! lifo.new_record? assert_equal authors(:david), authors.find_or_create_by_name(:name => 'David') end def test_find_id authors = Author.scoped david = authors.find(authors(:david).id) assert_equal 'David', david.name assert_raises(ActiveRecord::RecordNotFound) { authors.where(:name => 'lifo').find('42') } end def test_find_ids authors = Author.order('id ASC') results = authors.find(authors(:david).id, authors(:mary).id) assert_kind_of Array, results assert_equal 2, results.size assert_equal 'David', results[0].name assert_equal 'Mary', results[1].name assert_equal results, authors.find([authors(:david).id, authors(:mary).id]) assert_raises(ActiveRecord::RecordNotFound) { authors.where(:name => 'lifo').find(authors(:david).id, '42') } assert_raises(ActiveRecord::RecordNotFound) { authors.find(['42', 43]) } end def test_exists davids = Author.where(:name => 'David') assert davids.exists? assert davids.exists?(authors(:david).id) assert ! davids.exists?(authors(:mary).id) assert ! davids.exists?("42") assert ! davids.exists?(42) fake = Author.where(:name => 'fake author') assert ! fake.exists? assert ! fake.exists?(authors(:david).id) end def test_last authors = Author.scoped assert_equal authors(:mary), authors.last end def test_destroy_all davids = Author.where(:name => 'David') # Force load assert_equal [authors(:david)], davids.to_a assert davids.loaded? assert_difference('Author.count', -1) { davids.destroy_all } assert_equal [], davids.to_a assert davids.loaded? end def test_delete_all davids = Author.where(:name => 'David') assert_difference('Author.count', -1) { davids.delete_all } assert ! davids.loaded? end def test_delete_all_loaded davids = Author.where(:name => 'David') # Force load assert_equal [authors(:david)], davids.to_a assert davids.loaded? assert_difference('Author.count', -1) { davids.delete_all } assert_equal [], davids.to_a assert davids.loaded? end def test_relation_merging devs = Developer.where("salary >= 80000") & Developer.limit(2) & Developer.order('id ASC').where("id < 3") assert_equal [developers(:david), developers(:jamis)], devs.to_a dev_with_count = Developer.limit(1) & Developer.order('id DESC') & Developer.select('developers.*') assert_equal [developers(:poor_jamis)], dev_with_count.to_a end def test_relation_merging_with_eager_load relations = [] relations << (Post.order('comments.id DESC') & Post.eager_load(:last_comment) & Post.scoped) relations << (Post.eager_load(:last_comment) & Post.order('comments.id DESC') & Post.scoped) relations.each do |posts| post = posts.find { |p| p.id == 1 } assert_equal Post.find(1).last_comment, post.last_comment end end def test_relation_merging_with_preload [Post.scoped & Post.preload(:author), Post.preload(:author) & Post.scoped].each do |posts| assert_queries(2) { assert posts.first.author } end end def test_invalid_merge assert_raises(ArgumentError) { Post.scoped & Developer.scoped } end def test_count posts = Post.scoped assert_equal 7, posts.count assert_equal 7, posts.count(:all) assert_equal 7, posts.count(:id) assert_equal 1, posts.where('comments_count > 1').count assert_equal 5, posts.where(:comments_count => 0).count end def test_count_with_distinct posts = Post.scoped assert_equal 3, posts.count(:comments_count, :distinct => true) assert_equal 7, posts.count(:comments_count, :distinct => false) assert_equal 3, posts.select(:comments_count).count(:distinct => true) assert_equal 7, posts.select(:comments_count).count(:distinct => false) end def test_count_explicit_columns Post.update_all(:comments_count => nil) posts = Post.scoped assert_equal [0], posts.select('comments_count').where('id is not null').group('id').order('id').count.values.uniq assert_equal 0, posts.where('id is not null').select('comments_count').count assert_equal 7, posts.select('comments_count').count('id') assert_equal 0, posts.select('comments_count').count assert_equal 0, posts.count(:comments_count) assert_equal 0, posts.count('comments_count') end def test_size posts = Post.scoped assert_queries(1) { assert_equal 7, posts.size } assert ! posts.loaded? best_posts = posts.where(:comments_count => 0) best_posts.to_a # force load assert_no_queries { assert_equal 5, best_posts.size } end def test_count_complex_chained_relations posts = Post.select('comments_count').where('id is not null').group("author_id").where("comments_count > 0") expected = { 1 => 2 } assert_equal expected, posts.count end def test_any posts = Post.scoped assert_queries(3) do assert posts.any? # Uses COUNT() assert ! posts.where(:id => nil).any? assert posts.any? {|p| p.id > 0 } assert ! posts.any? {|p| p.id <= 0 } end assert posts.loaded? end def test_many posts = Post.scoped assert_queries(2) do assert posts.many? # Uses COUNT() assert posts.many? {|p| p.id > 0 } assert ! posts.many? {|p| p.id < 2 } end assert posts.loaded? end def test_many_with_limits posts = Post.scoped assert posts.many? assert ! posts.limit(1).many? end end