require "cases/helper" require 'models/tag' require 'models/tagging' require 'models/post' require 'models/topic' require 'models/comment' require 'models/author' require 'models/entrant' require 'models/developer' require 'models/reply' require 'models/company' require 'models/bird' require 'models/car' require 'models/engine' require 'models/tyre' require 'models/minivan' class RelationTest < ActiveRecord::TestCase fixtures :authors, :topics, :entrants, :developers, :companies, :developers_projects, :accounts, :categories, :categorizations, :posts, :comments, :tags, :taggings, :cars, :minivans def test_do_not_double_quote_string_id van = Minivan.last assert van assert_equal van.id, Minivan.where(:minivan_id => van).to_a.first.minivan_id end def test_do_not_double_quote_string_id_with_array van = Minivan.last assert van assert_equal van, Minivan.where(:minivan_id => [van]).to_a.first end def test_bind_values relation = Post.all assert_equal [], relation.bind_values relation2 = relation.bind 'foo' assert_equal %w{ foo }, relation2.bind_values assert_equal [], relation.bind_values end def test_two_scopes_with_includes_should_not_drop_any_include car = Car.incl_engines.incl_tyres.first assert_no_queries { car.tyres.length } assert_no_queries { car.engines.length } end def test_dynamic_finder x = Post.where('author_id = ?', 1) assert x.klass.respond_to?(:find_by_id), '@klass should handle dynamic finders' end def test_multivalue_where posts = Post.where('author_id = ? AND id = ?', 1, 1) assert_equal 1, posts.to_a.size end def test_scoped topics = Topic.all assert_kind_of ActiveRecord::Relation, topics assert_equal 4, topics.size end def test_to_json assert_nothing_raised { Bird.all.to_json } assert_nothing_raised { Bird.all.to_a.to_json } end def test_to_yaml assert_nothing_raised { Bird.all.to_yaml } assert_nothing_raised { Bird.all.to_a.to_yaml } end def test_to_xml assert_nothing_raised { Bird.all.to_xml } assert_nothing_raised { Bird.all.to_a.to_xml } end def test_scoped_all topics = Topic.all.to_a assert_kind_of Array, topics assert_no_queries { assert_equal 4, topics.size } end def test_loaded_all topics = Topic.all assert_queries(1) do 2.times { assert_equal 4, topics.to_a.size } end assert topics.loaded? end def test_scoped_first topics = Topic.all.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.all.order('id ASC') assert_queries(1) do topics.to_a # force load 2.times { assert_equal "The First Topic", topics.first.title } end assert topics.loaded? end def test_reload topics = Topic.all assert_queries(1) do 2.times { topics.to_a } end assert topics.loaded? original_size = topics.to_a.size Topic.create! :title => 'fake' assert_queries(1) { topics.reload } assert_equal original_size + 1, topics.size assert topics.loaded? end def test_finding_with_subquery relation = Topic.where(:approved => true) assert_equal relation.to_a, Topic.select('*').from(relation).to_a assert_equal relation.to_a, Topic.select('subquery.*').from(relation).to_a assert_equal relation.to_a, Topic.select('a.*').from(relation, :a).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_arel_order topics = Topic.order(Topic.arel_table[:id].asc) assert_equal 4, topics.to_a.size assert_equal topics(:first).title, topics.first.title end def test_finding_with_assoc_order topics = Topic.order(:id => :desc) assert_equal 4, topics.to_a.size assert_equal topics(:fourth).title, topics.first.title end def test_finding_with_reverted_assoc_order topics = Topic.order(:id => :asc).reverse_order assert_equal 4, topics.to_a.size assert_equal topics(:fourth).title, topics.first.title end def test_raising_exception_on_invalid_hash_params assert_raise(ArgumentError) { Topic.order(:name, "id DESC", :id => :DeSc) } end def test_finding_last_with_arel_order topics = Topic.order(Topic.arel_table[:id].asc) assert_equal topics(:fourth).title, topics.last.title end def test_finding_with_order_concatenated topics = Topic.order('title').order('author_name') assert_equal 4, topics.to_a.size assert_equal topics(:fourth).title, topics.first.title end def test_finding_with_reorder topics = Topic.order('author_name').order('title').reorder('id').to_a topics_titles = topics.map{ |t| t.title } assert_equal ['The First Topic', 'The Second Topic of the day', 'The Third Topic of the day', 'The Fourth Topic of the day'], topics_titles 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_cross_table_order_and_limit tags = Tag.includes(:taggings). order("tags.name asc", "taggings.taggable_id asc", "REPLACE('abc', taggings.taggable_type, taggings.taggable_type)"). limit(1).to_a assert_equal 1, tags.length end def test_finding_with_complex_order_and_limit tags = Tag.includes(:taggings).references(:taggings).order("REPLACE('abc', taggings.taggable_type, taggings.taggable_type)").limit(1).to_a assert_equal 1, tags.length end def test_finding_with_complex_order tags = Tag.includes(:taggings).references(:taggings).order("REPLACE('abc', taggings.taggable_type, taggings.taggable_type)").to_a assert_equal 3, tags.length 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_select_with_block even_ids = Developer.all.select {|d| d.id % 2 == 0 }.map(&:id) assert_equal [2, 4, 6, 8, 10], even_ids.sort end def test_none assert_no_queries do assert_equal [], Developer.none assert_equal [], Developer.all.none end end def test_none_chainable assert_no_queries do assert_equal [], Developer.none.where(:name => 'David') end end def test_none_chainable_to_existing_scope_extension_method assert_no_queries do assert_equal 1, Topic.anonymous_extension.none.one end end def test_none_chained_to_methods_firing_queries_straight_to_db assert_no_queries do assert_equal [], Developer.none.pluck(:id) # => uses select_all assert_equal 0, Developer.none.delete_all assert_equal 0, Developer.none.update_all(:name => 'David') assert_equal 0, Developer.none.delete(1) assert_equal false, Developer.none.exists?(1) end end def test_null_relation_content_size_methods assert_no_queries do assert_equal 0, Developer.none.size assert_equal 0, Developer.none.count assert_equal true, Developer.none.empty? assert_equal false, Developer.none.any? assert_equal false, Developer.none.many? end end def test_null_relation_calculations_methods assert_no_queries do assert_equal 0, Developer.none.count assert_equal nil, Developer.none.calculate(:average, 'salary') end end def test_null_relation_metadata_methods assert_equal "", Developer.none.to_sql assert_equal({}, Developer.none.where_values_hash) end def test_joins_with_nil_argument assert_nothing_raised { DependentFirm.joins(nil).first } 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.all.merge!(:where => {:approved => false}).to_a, 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_no_arguments_to_query_methods_raise_errors assert_raises(ArgumentError) { Topic.references() } assert_raises(ArgumentError) { Topic.includes() } assert_raises(ArgumentError) { Topic.preload() } assert_raises(ArgumentError) { Topic.group() } assert_raises(ArgumentError) { Topic.reorder() } end def test_blank_like_arguments_to_query_methods_dont_raise_errors assert_nothing_raised { Topic.references([]) } assert_nothing_raised { Topic.includes([]) } assert_nothing_raised { Topic.preload([]) } assert_nothing_raised { Topic.group([]) } assert_nothing_raised { Topic.reorder([]) } end def test_scoped_responds_to_delegated_methods relation = Topic.all ["map", "uniq", "sort", "insert", "delete", "update"].each do |method| assert_respond_to relation, method, "Topic.all should respond to #{method.inspect}" end end def test_respond_to_delegates_to_relation relation = Topic.all fake_arel = Struct.new(:responds) { def respond_to? method, access = false responds << [method, access] end }.new [] relation.extend(Module.new { attr_accessor :arel }) relation.arel = fake_arel relation.respond_to?(:matching_attributes) assert_equal [:matching_attributes, false], fake_arel.responds.first fake_arel.responds = [] relation.respond_to?(:matching_attributes, true) assert_equal [:matching_attributes, true], fake_arel.responds.first end def test_respond_to_dynamic_finders relation = Topic.all ["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_respond_to relation, method, "Topic.all should respond to #{method.inspect}" end end def test_respond_to_class_methods_and_scopes assert Topic.all.respond_to?(:by_lifo) end def test_find_with_readonly_option Developer.all.each { |d| assert !d.readonly? } Developer.all.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_preloaded_associations assert_queries(2) do posts = Post.preload(:comments).order('posts.id') assert posts.first.comments.first end assert_queries(2) do posts = Post.preload(:comments).order('posts.id') assert posts.first.comments.first end assert_queries(2) do posts = Post.preload(:author).order('posts.id') assert posts.first.author end assert_queries(2) do posts = Post.preload(:author).order('posts.id') assert posts.first.author end assert_queries(3) do posts = Post.preload(:author, :comments).order('posts.id') assert posts.first.author assert posts.first.comments.first end end def test_preload_applies_to_all_chained_preloaded_scopes assert_queries(3) do post = Post.with_comments.with_tags.first assert post end end def test_find_with_included_associations assert_queries(2) do posts = Post.includes(:comments).order('posts.id') assert posts.first.comments.first end assert_queries(2) do posts = Post.all.includes(:comments).order('posts.id') assert posts.first.comments.first end assert_queries(2) do posts = Post.includes(:author).order('posts.id') assert posts.first.author end assert_queries(3) do posts = Post.includes(:author, :comments).order('posts.id') assert posts.first.author assert posts.first.comments.first end end def test_default_scope_with_conditions_string assert_equal Developer.where(name: 'David').map(&:id).sort, DeveloperCalledDavid.all.map(&:id).sort assert_nil DeveloperCalledDavid.create!.name end def test_default_scope_with_conditions_hash assert_equal Developer.where(name: 'Jamis').map(&:id).sort, DeveloperCalledJamis.all.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.where(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.distinct.sort_by { |t| t.id } assert_equal expected_taggings, author.taggings.uniq.sort_by { |t| t.id } end authors = Author.all 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.all.find_by_id!(authors(:david).id) assert_equal "David", author.name assert_raises(ActiveRecord::RecordNotFound) { Author.all.find_by_id_and_name!(20, 'invalid') } end def test_find_id authors = Author.all 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_find_in_empty_array authors = Author.all.where(:id => []) assert authors.to_a.blank? end def test_where_with_ar_object author = Author.first authors = Author.all.where(:id => author) assert_equal 1, authors.to_a.length end def test_find_with_list_of_ar author = Author.first authors = Author.find([author]) assert_equal author, authors.first end class Mary < Author; end def test_find_by_classname Author.create!(:name => Mary.name) assert_equal 1, Author.where(:name => Mary).size end def test_find_by_id_with_list_of_ar author = Author.first authors = Author.find_by_id([author]) assert_equal author, authors end def test_find_all_using_where_twice_should_or_the_relation david = authors(:david) relation = Author.unscoped relation = relation.where(:name => david.name) relation = relation.where(:name => 'Santiago') relation = relation.where(:id => david.id) assert_equal [], relation.to_a end def test_multi_where_ands_queries relation = Author.unscoped david = authors(:david) sql = relation.where(:name => david.name).where(:name => 'Santiago').to_sql assert_match('AND', sql) end def test_find_all_with_multiple_should_use_and david = authors(:david) relation = [ { :name => david.name }, { :name => 'Santiago' }, { :name => 'tenderlove' }, ].inject(Author.unscoped) do |memo, param| memo.where(param) end assert_equal [], relation.to_a end def test_find_all_using_where_with_relation david = authors(:david) # switching the lines below would succeed in current rails # assert_queries(2) { assert_queries(1) { relation = Author.where(:id => Author.where(:id => david.id)) assert_equal [david], relation.to_a } end def test_find_all_using_where_with_relation_and_alternate_primary_key cool_first = minivans(:cool_first) # switching the lines below would succeed in current rails # assert_queries(2) { assert_queries(1) { relation = Minivan.where(:minivan_id => Minivan.where(:name => cool_first.name)) assert_equal [cool_first], relation.to_a } end def test_find_all_using_where_with_relation_does_not_alter_select_values david = authors(:david) subquery = Author.where(:id => david.id) assert_queries(1) { relation = Author.where(:id => subquery) assert_equal [david], relation.to_a } assert_equal 0, subquery.select_values.size end def test_find_all_using_where_with_relation_with_joins david = authors(:david) assert_queries(1) { relation = Author.where(:id => Author.joins(:posts).where(:id => david.id)) assert_equal [david], relation.to_a } end def test_find_all_using_where_with_relation_with_select_to_build_subquery david = authors(:david) assert_queries(1) { relation = Author.where(:name => Author.where(:id => david.id).select(:name)) assert_equal [david], relation.to_a } 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) assert ! davids.exists?(davids.new) fake = Author.where(:name => 'fake author') assert ! fake.exists? assert ! fake.exists?(authors(:david).id) end def test_last authors = Author.all assert_equal authors(:bob), 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_delete_all_limit_error assert_raises(ActiveRecord::ActiveRecordError) { Author.limit(10).delete_all } end def test_select_takes_a_variable_list_of_args david = developers(:david) developer = Developer.where(id: david.id).select(:name, :salary).first assert_equal david.name, developer.name assert_equal david.salary, developer.salary end def test_select_argument_error assert_raises(ArgumentError) { Developer.select } end def test_relation_merging devs = Developer.where("salary >= 80000").merge(Developer.limit(2)).merge(Developer.order('id ASC').where("id < 3")) assert_equal [developers(:david), developers(:jamis)], devs.to_a dev_with_count = Developer.limit(1).merge(Developer.order('id DESC')).merge(Developer.select('developers.*')) assert_equal [developers(:poor_jamis)], dev_with_count.to_a end def test_relation_to_sql sql = Post.connection.unprepared_statement do Post.first.comments.to_sql end assert_no_match(/\?/, sql) end def test_relation_merging_with_arel_equalities_keeps_last_equality devs = Developer.where(Developer.arel_table[:salary].eq(80000)).merge( Developer.where(Developer.arel_table[:salary].eq(9000)) ) assert_equal [developers(:poor_jamis)], devs.to_a end def test_relation_merging_with_arel_equalities_keeps_last_equality_with_non_attribute_left_hand salary_attr = Developer.arel_table[:salary] devs = Developer.where( Arel::Nodes::NamedFunction.new('abs', [salary_attr]).eq(80000) ).merge( Developer.where( Arel::Nodes::NamedFunction.new('abs', [salary_attr]).eq(9000) ) ) assert_equal [developers(:poor_jamis)], devs.to_a end def test_relation_merging_with_eager_load relations = [] relations << Post.order('comments.id DESC').merge(Post.eager_load(:last_comment)).merge(Post.all) relations << Post.eager_load(:last_comment).merge(Post.order('comments.id DESC')).merge(Post.all) 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_locks devs = Developer.lock.where("salary >= 80000").order("id DESC").merge(Developer.limit(2)) assert devs.locked.present? end def test_relation_merging_with_preload [Post.all.merge(Post.preload(:author)), Post.preload(:author).merge(Post.all)].each do |posts| assert_queries(2) { assert posts.first.author } end end def test_relation_merging_with_joins comments = Comment.joins(:post).where(:body => 'Thank you for the welcome').merge(Post.where(:body => 'Such a lovely day')) assert_equal 1, comments.count end def test_relation_merging_with_association assert_queries(2) do # one for loading post, and another one merged query post = Post.where(:body => 'Such a lovely day').first comments = Comment.where(:body => 'Thank you for the welcome').merge(post.comments) assert_equal 1, comments.count end end def test_count posts = Post.all assert_equal 11, posts.count assert_equal 11, posts.count(:all) assert_equal 11, posts.count(:id) assert_equal 1, posts.where('comments_count > 1').count assert_equal 9, posts.where(:comments_count => 0).count end def test_count_with_distinct posts = Post.all assert_equal 3, posts.distinct(true).count(:comments_count) assert_equal 11, posts.distinct(false).count(:comments_count) assert_equal 3, posts.distinct(true).select(:comments_count).count assert_equal 11, posts.distinct(false).select(:comments_count).count end def test_count_explicit_columns Post.update_all(:comments_count => nil) posts = Post.all 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 11, 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_multiple_selects post = Post.all.select('comments_count').select('title').order("id ASC").first assert_equal "Welcome to the weblog", post.title assert_equal 2, post.comments_count end def test_size posts = Post.all assert_queries(1) { assert_equal 11, posts.size } assert ! posts.loaded? best_posts = posts.where(:comments_count => 0) best_posts.to_a # force load assert_no_queries { assert_equal 9, best_posts.size } end def test_size_with_limit posts = Post.limit(10) assert_queries(1) { assert_equal 10, posts.size } assert ! posts.loaded? best_posts = posts.where(:comments_count => 0) best_posts.to_a # force load assert_no_queries { assert_equal 9, best_posts.size } end def test_size_with_zero_limit posts = Post.limit(0) assert_no_queries { assert_equal 0, posts.size } assert ! posts.loaded? posts.to_a # force load assert_no_queries { assert_equal 0, posts.size } end def test_empty_with_zero_limit posts = Post.limit(0) assert_no_queries { assert_equal true, posts.empty? } assert ! posts.loaded? 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_empty posts = Post.all assert_queries(1) { assert_equal false, posts.empty? } assert ! posts.loaded? no_posts = posts.where(:title => "") assert_queries(1) { assert_equal true, no_posts.empty? } assert ! no_posts.loaded? best_posts = posts.where(:comments_count => 0) best_posts.to_a # force load assert_no_queries { assert_equal false, best_posts.empty? } end def test_empty_complex_chained_relations posts = Post.select("comments_count").where("id is not null").group("author_id").where("comments_count > 0") assert_queries(1) { assert_equal false, posts.empty? } assert ! posts.loaded? no_posts = posts.where(:title => "") assert_queries(1) { assert_equal true, no_posts.empty? } assert ! no_posts.loaded? end def test_any posts = Post.all # This test was failing when run on its own (as opposed to running the entire suite). # The second line in the assert_queries block was causing visit_Arel_Attributes_Attribute # in Arel::Visitors::ToSql to trigger a SHOW TABLES query. Running that line here causes # the SHOW TABLES result to be cached so we don't have to do it again in the block. # # This is obviously a rubbish fix but it's the best I can come up with for now... posts.where(:id => nil).any? 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.all 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.all assert posts.many? assert ! posts.limit(1).many? end def test_build posts = Post.all post = posts.new assert_kind_of Post, post end def test_scoped_build posts = Post.where(:title => 'You told a lie') post = posts.new assert_kind_of Post, post assert_equal 'You told a lie', post.title end def test_create birds = Bird.all sparrow = birds.create assert_kind_of Bird, sparrow assert !sparrow.persisted? hen = birds.where(:name => 'hen').create assert hen.persisted? assert_equal 'hen', hen.name end def test_create_bang birds = Bird.all assert_raises(ActiveRecord::RecordInvalid) { birds.create! } hen = birds.where(:name => 'hen').create! assert_kind_of Bird, hen assert hen.persisted? assert_equal 'hen', hen.name end def test_first_or_create parrot = Bird.where(:color => 'green').first_or_create(:name => 'parrot') assert_kind_of Bird, parrot assert parrot.persisted? assert_equal 'parrot', parrot.name assert_equal 'green', parrot.color same_parrot = Bird.where(:color => 'green').first_or_create(:name => 'parakeet') assert_kind_of Bird, same_parrot assert same_parrot.persisted? assert_equal parrot, same_parrot end def test_first_or_create_with_no_parameters parrot = Bird.where(:color => 'green').first_or_create assert_kind_of Bird, parrot assert !parrot.persisted? assert_equal 'green', parrot.color end def test_first_or_create_with_block parrot = Bird.where(:color => 'green').first_or_create { |bird| bird.name = 'parrot' } assert_kind_of Bird, parrot assert parrot.persisted? assert_equal 'green', parrot.color assert_equal 'parrot', parrot.name same_parrot = Bird.where(:color => 'green').first_or_create { |bird| bird.name = 'parakeet' } assert_equal parrot, same_parrot end def test_first_or_create_with_array several_green_birds = Bird.where(:color => 'green').first_or_create([{:name => 'parrot'}, {:name => 'parakeet'}]) assert_kind_of Array, several_green_birds several_green_birds.each { |bird| assert bird.persisted? } same_parrot = Bird.where(:color => 'green').first_or_create([{:name => 'hummingbird'}, {:name => 'macaw'}]) assert_kind_of Bird, same_parrot assert_equal several_green_birds.first, same_parrot end def test_first_or_create_bang_with_valid_options parrot = Bird.where(:color => 'green').first_or_create!(:name => 'parrot') assert_kind_of Bird, parrot assert parrot.persisted? assert_equal 'parrot', parrot.name assert_equal 'green', parrot.color same_parrot = Bird.where(:color => 'green').first_or_create!(:name => 'parakeet') assert_kind_of Bird, same_parrot assert same_parrot.persisted? assert_equal parrot, same_parrot end def test_first_or_create_bang_with_invalid_options assert_raises(ActiveRecord::RecordInvalid) { Bird.where(:color => 'green').first_or_create!(:pirate_id => 1) } end def test_first_or_create_bang_with_no_parameters assert_raises(ActiveRecord::RecordInvalid) { Bird.where(:color => 'green').first_or_create! } end def test_first_or_create_bang_with_valid_block parrot = Bird.where(:color => 'green').first_or_create! { |bird| bird.name = 'parrot' } assert_kind_of Bird, parrot assert parrot.persisted? assert_equal 'green', parrot.color assert_equal 'parrot', parrot.name same_parrot = Bird.where(:color => 'green').first_or_create! { |bird| bird.name = 'parakeet' } assert_equal parrot, same_parrot end def test_first_or_create_bang_with_invalid_block assert_raise(ActiveRecord::RecordInvalid) do Bird.where(:color => 'green').first_or_create! { |bird| bird.pirate_id = 1 } end end def test_first_or_create_with_valid_array several_green_birds = Bird.where(:color => 'green').first_or_create!([{:name => 'parrot'}, {:name => 'parakeet'}]) assert_kind_of Array, several_green_birds several_green_birds.each { |bird| assert bird.persisted? } same_parrot = Bird.where(:color => 'green').first_or_create!([{:name => 'hummingbird'}, {:name => 'macaw'}]) assert_kind_of Bird, same_parrot assert_equal several_green_birds.first, same_parrot end def test_first_or_create_with_invalid_array assert_raises(ActiveRecord::RecordInvalid) { Bird.where(:color => 'green').first_or_create!([ {:name => 'parrot'}, {:pirate_id => 1} ]) } end def test_first_or_initialize parrot = Bird.where(:color => 'green').first_or_initialize(:name => 'parrot') assert_kind_of Bird, parrot assert !parrot.persisted? assert parrot.valid? assert parrot.new_record? assert_equal 'parrot', parrot.name assert_equal 'green', parrot.color end def test_first_or_initialize_with_no_parameters parrot = Bird.where(:color => 'green').first_or_initialize assert_kind_of Bird, parrot assert !parrot.persisted? assert !parrot.valid? assert parrot.new_record? assert_equal 'green', parrot.color end def test_first_or_initialize_with_block parrot = Bird.where(:color => 'green').first_or_initialize { |bird| bird.name = 'parrot' } assert_kind_of Bird, parrot assert !parrot.persisted? assert parrot.valid? assert parrot.new_record? assert_equal 'green', parrot.color assert_equal 'parrot', parrot.name end def test_find_or_create_by assert_nil Bird.find_by(name: 'bob') bird = Bird.find_or_create_by(name: 'bob') assert bird.persisted? assert_equal bird, Bird.find_or_create_by(name: 'bob') end def test_find_or_create_by_with_create_with assert_nil Bird.find_by(name: 'bob') bird = Bird.create_with(color: 'green').find_or_create_by(name: 'bob') assert bird.persisted? assert_equal 'green', bird.color assert_equal bird, Bird.create_with(color: 'blue').find_or_create_by(name: 'bob') end def test_find_or_create_by! assert_raises(ActiveRecord::RecordInvalid) { Bird.find_or_create_by!(color: 'green') } end def test_find_or_initialize_by assert_nil Bird.find_by(name: 'bob') bird = Bird.find_or_initialize_by(name: 'bob') assert bird.new_record? bird.save! assert_equal bird, Bird.find_or_initialize_by(name: 'bob') end def test_explicit_create_scope hens = Bird.where(:name => 'hen') assert_equal 'hen', hens.new.name hens = hens.create_with(:name => 'cock') assert_equal 'cock', hens.new.name end def test_except relation = Post.where(:author_id => 1).order('id ASC').limit(1) assert_equal [posts(:welcome)], relation.to_a author_posts = relation.except(:order, :limit) assert_equal Post.where(:author_id => 1).to_a, author_posts.to_a all_posts = relation.except(:where, :order, :limit) assert_equal Post.all, all_posts end def test_only relation = Post.where(:author_id => 1).order('id ASC').limit(1) assert_equal [posts(:welcome)], relation.to_a author_posts = relation.only(:where) assert_equal Post.where(:author_id => 1).to_a, author_posts.to_a all_posts = relation.only(:limit) assert_equal Post.limit(1).to_a.first, all_posts.first end def test_anonymous_extension relation = Post.where(:author_id => 1).order('id ASC').extending do def author 'lifo' end end assert_equal "lifo", relation.author assert_equal "lifo", relation.limit(1).author end def test_named_extension relation = Post.where(:author_id => 1).order('id ASC').extending(Post::NamedExtension) assert_equal "lifo", relation.author assert_equal "lifo", relation.limit(1).author end def test_order_by_relation_attribute assert_equal Post.order(Post.arel_table[:title]).to_a, Post.order("title").to_a end def test_default_scope_order_with_scope_order assert_equal 'honda', CoolCar.order_using_new_style.limit(1).first.name assert_equal 'honda', FastCar.order_using_new_style.limit(1).first.name end def test_order_using_scoping car1 = CoolCar.order('id DESC').scoping do CoolCar.all.merge!(:order => 'id asc').first end assert_equal 'honda', car1.name car2 = FastCar.order('id DESC').scoping do FastCar.all.merge!(:order => 'id asc').first end assert_equal 'honda', car2.name end def test_unscoped_block_style assert_equal 'honda', CoolCar.unscoped { CoolCar.order_using_new_style.limit(1).first.name} assert_equal 'honda', FastCar.unscoped { FastCar.order_using_new_style.limit(1).first.name} end def test_intersection_with_array relation = Author.where(:name => "David") rails_author = relation.first assert_equal [rails_author], [rails_author] & relation assert_equal [rails_author], relation & [rails_author] end def test_primary_key assert_equal "id", Post.all.primary_key end def test_eager_loading_with_conditions_on_joins scope = Post.includes(:comments) # This references the comments table, and so it should cause the comments to be eager # loaded via a JOIN, rather than by subsequent queries. scope = scope.joins( Post.arel_table.create_join( Post.arel_table, Post.arel_table.create_on(Comment.arel_table[:id].eq(3)) ) ) assert_deprecated do assert scope.eager_loading? end end def test_turn_off_eager_loading_with_conditions_on_joins original_value = ActiveRecord::Base.disable_implicit_join_references ActiveRecord::Base.disable_implicit_join_references = true scope = Topic.where(author_email_address: 'my.example@gmail.com').includes(:replies) assert_not scope.eager_loading? ensure ActiveRecord::Base.disable_implicit_join_references = original_value end def test_ordering_with_extra_spaces assert_equal authors(:david), Author.order('id DESC , name DESC').last end def test_update_all_with_blank_argument assert_raises(ArgumentError) { Comment.update_all({}) } end def test_update_all_with_joins comments = Comment.joins(:post).where('posts.id' => posts(:welcome).id) count = comments.count assert_equal count, comments.update_all(:post_id => posts(:thinking).id) assert_equal posts(:thinking), comments(:greetings).post end def test_update_all_with_joins_and_limit comments = Comment.joins(:post).where('posts.id' => posts(:welcome).id).limit(1) assert_equal 1, comments.update_all(:post_id => posts(:thinking).id) end def test_update_all_with_joins_and_limit_and_order comments = Comment.joins(:post).where('posts.id' => posts(:welcome).id).order('comments.id').limit(1) assert_equal 1, comments.update_all(:post_id => posts(:thinking).id) assert_equal posts(:thinking), comments(:greetings).post assert_equal posts(:welcome), comments(:more_greetings).post end def test_update_all_with_joins_and_offset all_comments = Comment.joins(:post).where('posts.id' => posts(:welcome).id) count = all_comments.count comments = all_comments.offset(1) assert_equal count - 1, comments.update_all(:post_id => posts(:thinking).id) end def test_update_all_with_joins_and_offset_and_order all_comments = Comment.joins(:post).where('posts.id' => posts(:welcome).id).order('posts.id', 'comments.id') count = all_comments.count comments = all_comments.offset(1) assert_equal count - 1, comments.update_all(:post_id => posts(:thinking).id) assert_equal posts(:thinking), comments(:more_greetings).post assert_equal posts(:welcome), comments(:greetings).post end def test_distinct tag1 = Tag.create(:name => 'Foo') tag2 = Tag.create(:name => 'Foo') query = Tag.select(:name).where(:id => [tag1.id, tag2.id]) assert_equal ['Foo', 'Foo'], query.map(&:name) assert_sql(/DISTINCT/) do assert_equal ['Foo'], query.distinct.map(&:name) assert_equal ['Foo'], query.uniq.map(&:name) end assert_sql(/DISTINCT/) do assert_equal ['Foo'], query.distinct(true).map(&:name) assert_equal ['Foo'], query.uniq(true).map(&:name) end assert_equal ['Foo', 'Foo'], query.distinct(true).distinct(false).map(&:name) assert_equal ['Foo', 'Foo'], query.uniq(true).uniq(false).map(&:name) end def test_doesnt_add_having_values_if_options_are_blank scope = Post.having('') assert_equal [], scope.having_values scope = Post.having([]) assert_equal [], scope.having_values end def test_references_triggers_eager_loading scope = Post.includes(:comments) assert !scope.eager_loading? assert scope.references(:comments).eager_loading? end def test_references_doesnt_trigger_eager_loading_if_reference_not_included scope = Post.references(:comments) assert !scope.eager_loading? end def test_automatically_added_where_references scope = Post.where(:comments => { :body => "Bla" }) assert_equal ['comments'], scope.references_values scope = Post.where('comments.body' => 'Bla') assert_equal ['comments'], scope.references_values end def test_automatically_added_having_references scope = Post.having(:comments => { :body => "Bla" }) assert_equal ['comments'], scope.references_values scope = Post.having('comments.body' => 'Bla') assert_equal ['comments'], scope.references_values end def test_automatically_added_order_references scope = Post.order('comments.body') assert_equal ['comments'], scope.references_values scope = Post.order('comments.body', 'yaks.body') assert_equal ['comments', 'yaks'], scope.references_values # Don't infer yaks, let's not go down that road again... scope = Post.order('comments.body, yaks.body') assert_equal ['comments'], scope.references_values scope = Post.order('comments.body asc') assert_equal ['comments'], scope.references_values scope = Post.order('foo(comments.body)') assert_equal [], scope.references_values end def test_presence topics = Topic.all # the first query is triggered because there are no topics yet. assert_queries(1) { assert topics.present? } # checking if there are topics is used before you actually display them, # thus it shouldn't invoke an extra count query. assert_no_queries { assert topics.present? } assert_no_queries { assert !topics.blank? } # shows count of topics and loops after loading the query should not trigger extra queries either. assert_no_queries { topics.size } assert_no_queries { topics.length } assert_no_queries { topics.each } # count always trigger the COUNT query. assert_queries(1) { topics.count } assert topics.loaded? end test "find_by with hash conditions returns the first matching record" do assert_equal posts(:eager_other), Post.order(:id).find_by(author_id: 2) end test "find_by with non-hash conditions returns the first matching record" do assert_equal posts(:eager_other), Post.order(:id).find_by("author_id = 2") end test "find_by with multi-arg conditions returns the first matching record" do assert_equal posts(:eager_other), Post.order(:id).find_by('author_id = ?', 2) end test "find_by returns nil if the record is missing" do assert_equal nil, Post.all.find_by("1 = 0") end test "find_by doesn't have implicit ordering" do assert_sql(/^((?!ORDER).)*$/) { Post.find_by(author_id: 2) } end test "find_by! with hash conditions returns the first matching record" do assert_equal posts(:eager_other), Post.order(:id).find_by!(author_id: 2) end test "find_by! with non-hash conditions returns the first matching record" do assert_equal posts(:eager_other), Post.order(:id).find_by!("author_id = 2") end test "find_by! with multi-arg conditions returns the first matching record" do assert_equal posts(:eager_other), Post.order(:id).find_by!('author_id = ?', 2) end test "find_by! doesn't have implicit ordering" do assert_sql(/^((?!ORDER).)*$/) { Post.find_by!(author_id: 2) } end test "find_by! raises RecordNotFound if the record is missing" do assert_raises(ActiveRecord::RecordNotFound) do Post.all.find_by!("1 = 0") end end test "loaded relations cannot be mutated by multi value methods" do relation = Post.all relation.to_a assert_raises(ActiveRecord::ImmutableRelation) do relation.where! 'foo' end end test "loaded relations cannot be mutated by single value methods" do relation = Post.all relation.to_a assert_raises(ActiveRecord::ImmutableRelation) do relation.limit! 5 end end test "loaded relations cannot be mutated by merge!" do relation = Post.all relation.to_a assert_raises(ActiveRecord::ImmutableRelation) do relation.merge! where: 'foo' end end test "loaded relations cannot be mutated by extending!" do relation = Post.all relation.to_a assert_raises(ActiveRecord::ImmutableRelation) do relation.extending! Module.new end end test "relations show the records in #inspect" do relation = Post.limit(2) assert_equal "#", relation.inspect end test "relations limit the records in #inspect at 10" do relation = Post.limit(11) assert_equal "#", relation.inspect end test "already-loaded relations don't perform a new query in #inspect" do relation = Post.limit(2) relation.to_a expected = "#" assert_no_queries do assert_equal expected, relation.inspect end end test 'using a custom table affects the wheres' do table_alias = Post.arel_table.alias('omg_posts') relation = ActiveRecord::Relation.new Post, table_alias relation.where!(:foo => "bar") node = relation.arel.constraints.first.grep(Arel::Attributes::Attribute).first assert_equal table_alias, node.relation end test '#load' do relation = Post.all assert_queries(1) do assert_equal relation, relation.load end assert_no_queries { relation.to_a } end test 'group with select and includes' do authors_count = Post.select('author_id, COUNT(author_id) AS num_posts'). group('author_id').order('author_id').includes(:author).to_a assert_no_queries do result = authors_count.map do |post| [post.num_posts, post.author.try(:name)] end expected = [[1, nil], [5, "David"], [3, "Mary"], [2, "Bob"]] assert_equal expected, result end end test "delegations do not leak to other classes" do Topic.all.by_lifo assert Topic.all.class.method_defined?(:by_lifo) assert !Post.all.respond_to?(:by_lifo) end class OMGTopic < ActiveRecord::Base self.table_name = 'topics' def self.__omg__ "omgtopic" end end test "delegations do not clash across classes" do begin class ::Array def __omg__ "array" end end assert_equal "array", Topic.all.__omg__ assert_equal "omgtopic", OMGTopic.all.__omg__ ensure Array.send(:remove_method, :__omg__) end end test "merge collapses wheres from the LHS only" do left = Post.where(title: "omg").where(comments_count: 1) right = Post.where(title: "wtf").where(title: "bbq") expected = [left.where_values[1]] + right.where_values merged = left.merge(right) assert_equal expected, merged.where_values assert !merged.to_sql.include?("omg") assert merged.to_sql.include?("wtf") assert merged.to_sql.include?("bbq") end def test_merging_removes_rhs_bind_parameters left = Post.where(id: Arel::Nodes::BindParam.new('?')) column = Post.columns_hash['id'] left.bind_values += [[column, 20]] right = Post.where(id: 10) merged = left.merge(right) assert_equal [], merged.bind_values end def test_merging_keeps_lhs_bind_parameters column = Post.columns_hash['id'] binds = [[column, 20]] right = Post.where(id: Arel::Nodes::BindParam.new('?')) right.bind_values += binds left = Post.where(id: 10) merged = left.merge(right) assert_equal binds, merged.bind_values end end