require "cases/helper" require "models/computer" require "models/developer" require "models/project" require "models/company" require "models/categorization" require "models/category" require "models/post" require "models/author" require "models/comment" require "models/tag" require "models/tagging" require "models/person" require "models/reader" require "models/ship_part" require "models/ship" require "models/liquid" require "models/molecule" require "models/electron" require "models/man" require "models/interest" class AssociationsTest < ActiveRecord::TestCase fixtures :accounts, :companies, :developers, :projects, :developers_projects, :computers, :people, :readers, :authors, :author_favorites def test_eager_loading_should_not_change_count_of_children liquid = Liquid.create(name: "salty") molecule = liquid.molecules.create(name: "molecule_1") molecule.electrons.create(name: "electron_1") molecule.electrons.create(name: "electron_2") liquids = Liquid.includes(molecules: :electrons).references(:molecules).where("molecules.id is not null") assert_equal 1, liquids[0].molecules.length end def test_subselect author = authors :david favs = author.author_favorites fav2 = author.author_favorites.where(author: Author.where(id: author.id)).to_a assert_equal favs, fav2 end def test_loading_the_association_target_should_keep_child_records_marked_for_destruction ship = Ship.create!(name: "The good ship Dollypop") part = ship.parts.create!(name: "Mast") part.mark_for_destruction assert ship.parts[0].marked_for_destruction? end def test_loading_the_association_target_should_load_most_recent_attributes_for_child_records_marked_for_destruction ship = Ship.create!(name: "The good ship Dollypop") part = ship.parts.create!(name: "Mast") part.mark_for_destruction ShipPart.find(part.id).update_columns(name: "Deck") assert_equal "Deck", ship.parts[0].name end def test_include_with_order_works assert_nothing_raised { Account.all.merge!(order: "id", includes: :firm).first } assert_nothing_raised { Account.all.merge!(order: :id, includes: :firm).first } end def test_bad_collection_keys assert_raise(ArgumentError, "ActiveRecord should have barked on bad collection keys") do Class.new(ActiveRecord::Base).has_many(:wheels, name: "wheels") end end def test_should_construct_new_finder_sql_after_create person = Person.new first_name: "clark" assert_equal [], person.readers.to_a person.save! reader = Reader.create! person: person, post: Post.new(title: "foo", body: "bar") assert person.readers.find(reader.id) end def test_force_reload firm = Firm.new("name" => "A New Firm, Inc") firm.save firm.clients.each {} # forcing to load all clients assert firm.clients.empty?, "New firm shouldn't have client objects" assert_equal 0, firm.clients.size, "New firm should have 0 clients" client = Client.new("name" => "TheClient.com", "firm_id" => firm.id) client.save assert firm.clients.empty?, "New firm should have cached no client objects" assert_equal 0, firm.clients.size, "New firm should have cached 0 clients count" firm.clients.reload assert !firm.clients.empty?, "New firm should have reloaded client objects" assert_equal 1, firm.clients.size, "New firm should have reloaded clients count" end def test_using_limitable_reflections_helper using_limitable_reflections = lambda { |reflections| Tagging.all.send :using_limitable_reflections?, reflections } belongs_to_reflections = [Tagging.reflect_on_association(:tag), Tagging.reflect_on_association(:super_tag)] has_many_reflections = [Tag.reflect_on_association(:taggings), Developer.reflect_on_association(:projects)] mixed_reflections = (belongs_to_reflections + has_many_reflections).uniq assert using_limitable_reflections.call(belongs_to_reflections), "Belong to associations are limitable" assert !using_limitable_reflections.call(has_many_reflections), "All has many style associations are not limitable" assert !using_limitable_reflections.call(mixed_reflections), "No collection associations (has many style) should pass" end def test_association_with_references firm = companies(:first_firm) assert_includes firm.association_with_references.references_values, "foo" end end class AssociationProxyTest < ActiveRecord::TestCase fixtures :authors, :posts, :categorizations, :categories, :developers, :projects, :developers_projects def test_push_does_not_load_target david = authors(:david) david.posts << (post = Post.new(title: "New on Edge", body: "More cool stuff!")) assert !david.posts.loaded? assert_includes david.posts, post end def test_push_has_many_through_does_not_load_target david = authors(:david) david.categories << categories(:technology) assert !david.categories.loaded? assert_includes david.categories, categories(:technology) end def test_push_followed_by_save_does_not_load_target david = authors(:david) david.posts << (post = Post.new(title: "New on Edge", body: "More cool stuff!")) assert !david.posts.loaded? david.save assert !david.posts.loaded? assert_includes david.posts, post end def test_push_does_not_lose_additions_to_new_record josh = Author.new(name: "Josh") josh.posts << Post.new(title: "New on Edge", body: "More cool stuff!") assert josh.posts.loaded? assert_equal 1, josh.posts.size end def test_append_behaves_like_push josh = Author.new(name: "Josh") josh.posts.append Post.new(title: "New on Edge", body: "More cool stuff!") assert josh.posts.loaded? assert_equal 1, josh.posts.size end def test_prepend_is_not_defined josh = Author.new(name: "Josh") assert_raises(NoMethodError) { josh.posts.prepend Post.new } end def test_save_on_parent_does_not_load_target david = developers(:david) assert !david.projects.loaded? david.update_columns(created_at: Time.now) assert !david.projects.loaded? end def test_load_does_load_target david = developers(:david) assert !david.projects.loaded? david.projects.load assert david.projects.loaded? end def test_inspect_does_not_reload_a_not_yet_loaded_target andreas = Developer.new name: "Andreas", log: "new developer added" assert !andreas.audit_logs.loaded? assert_match(/message: "new developer added"/, andreas.audit_logs.inspect) end def test_save_on_parent_saves_children developer = Developer.create name: "Bryan", salary: 50_000 assert_equal 1, developer.reload.audit_logs.size end def test_create_via_association_with_block post = authors(:david).posts.create(title: "New on Edge") { |p| p.body = "More cool stuff!" } assert_equal post.title, "New on Edge" assert_equal post.body, "More cool stuff!" end def test_create_with_bang_via_association_with_block post = authors(:david).posts.create!(title: "New on Edge") { |p| p.body = "More cool stuff!" } assert_equal post.title, "New on Edge" assert_equal post.body, "More cool stuff!" end def test_reload_returns_association david = developers(:david) assert_nothing_raised do assert_equal david.projects, david.projects.reload.reload end end def test_proxy_association_accessor david = developers(:david) assert_equal david.association(:projects), david.projects.proxy_association end def test_scoped_allows_conditions assert developers(:david).projects.merge(where: "foo").to_sql.include?("foo") end test "getting a scope from an association" do david = developers(:david) assert david.projects.scope.is_a?(ActiveRecord::Relation) assert_equal david.projects, david.projects.scope end test "inverses get set of subsets of the association" do man = Man.create man.interests.create man = Man.find(man.id) assert_queries(1) do assert_equal man, man.interests.where("1=1").first.man end end test "first! works on loaded associations" do david = authors(:david) assert_equal david.posts.first, david.posts.reload.first! assert david.posts.loaded? assert_no_queries { david.posts.first! } end def test_pluck_uses_loaded_target david = authors(:david) assert_equal david.posts.pluck(:title), david.posts.load.pluck(:title) assert david.posts.loaded? assert_no_queries { david.posts.pluck(:title) } end def test_reset_unloads_target david = authors(:david) david.posts.reload assert david.posts.loaded? david.posts.reset assert !david.posts.loaded? end end class OverridingAssociationsTest < ActiveRecord::TestCase class DifferentPerson < ActiveRecord::Base; end class PeopleList < ActiveRecord::Base has_and_belongs_to_many :has_and_belongs_to_many, before_add: :enlist has_many :has_many, before_add: :enlist belongs_to :belongs_to has_one :has_one end class DifferentPeopleList < PeopleList # Different association with the same name, callbacks should be omitted here. has_and_belongs_to_many :has_and_belongs_to_many, class_name: "DifferentPerson" has_many :has_many, class_name: "DifferentPerson" belongs_to :belongs_to, class_name: "DifferentPerson" has_one :has_one, class_name: "DifferentPerson" end def test_habtm_association_redefinition_callbacks_should_differ_and_not_inherited # redeclared association on AR descendant should not inherit callbacks from superclass callbacks = PeopleList.before_add_for_has_and_belongs_to_many assert_equal(1, callbacks.length) callbacks = DifferentPeopleList.before_add_for_has_and_belongs_to_many assert_equal([], callbacks) end def test_has_many_association_redefinition_callbacks_should_differ_and_not_inherited # redeclared association on AR descendant should not inherit callbacks from superclass callbacks = PeopleList.before_add_for_has_many assert_equal(1, callbacks.length) callbacks = DifferentPeopleList.before_add_for_has_many assert_equal([], callbacks) end def test_habtm_association_redefinition_reflections_should_differ_and_not_inherited assert_not_equal( PeopleList.reflect_on_association(:has_and_belongs_to_many), DifferentPeopleList.reflect_on_association(:has_and_belongs_to_many) ) end def test_has_many_association_redefinition_reflections_should_differ_and_not_inherited assert_not_equal( PeopleList.reflect_on_association(:has_many), DifferentPeopleList.reflect_on_association(:has_many) ) end def test_belongs_to_association_redefinition_reflections_should_differ_and_not_inherited assert_not_equal( PeopleList.reflect_on_association(:belongs_to), DifferentPeopleList.reflect_on_association(:belongs_to) ) end def test_has_one_association_redefinition_reflections_should_differ_and_not_inherited assert_not_equal( PeopleList.reflect_on_association(:has_one), DifferentPeopleList.reflect_on_association(:has_one) ) end def test_requires_symbol_argument assert_raises ArgumentError do Class.new(Post) do belongs_to "author" end end end end class GeneratedMethodsTest < ActiveRecord::TestCase fixtures :developers, :computers, :posts, :comments def test_association_methods_override_attribute_methods_of_same_name assert_equal(developers(:david), computers(:workstation).developer) # this next line will fail if the attribute methods module is generated lazily # after the association methods module is generated assert_equal(developers(:david), computers(:workstation).developer) assert_equal(developers(:david).id, computers(:workstation)[:developer]) end def test_model_method_overrides_association_method assert_equal(comments(:greetings).body, posts(:welcome).first_comment) end module MyModule def comments; :none end end class MyArticle < ActiveRecord::Base self.table_name = "articles" include MyModule has_many :comments, inverse_of: false end def test_included_module_overwrites_association_methods assert_equal :none, MyArticle.new.comments end end