/activerecord/test/cases/associations/left_outer_join_association_test.rb
Ruby | 91 lines | 72 code | 17 blank | 2 comment | 0 complexity | 7c95a6a32adc339deb7abcd32eb45c29 MD5 | raw file
- # frozen_string_literal: true
- require "cases/helper"
- require "models/post"
- require "models/comment"
- require "models/author"
- require "models/essay"
- require "models/category"
- require "models/categorization"
- require "models/person"
- class LeftOuterJoinAssociationTest < ActiveRecord::TestCase
- fixtures :authors, :author_addresses, :essays, :posts, :comments, :categorizations, :people
- def test_construct_finder_sql_applies_aliases_tables_on_association_conditions
- result = Author.left_outer_joins(:thinking_posts, :welcome_posts).to_a
- assert_equal authors(:david), result.first
- end
- def test_construct_finder_sql_does_not_table_name_collide_on_duplicate_associations
- assert_nothing_raised do
- queries = capture_sql do
- Person.left_outer_joins(agents: { agents: :agents })
- .left_outer_joins(agents: { agents: { primary_contact: :agents } }).to_a
- end
- assert queries.any? { |sql| /agents_people_4/i.match?(sql) }
- end
- end
- def test_left_outer_joins_count_is_same_as_size_of_loaded_results
- assert_equal 17, Post.left_outer_joins(:comments).to_a.size
- assert_equal 17, Post.left_outer_joins(:comments).count
- end
- def test_left_joins_aliases_left_outer_joins
- assert_equal Post.left_outer_joins(:comments).to_sql, Post.left_joins(:comments).to_sql
- end
- def test_left_outer_joins_return_has_value_for_every_comment
- all_post_ids = Post.pluck(:id)
- assert_equal all_post_ids, all_post_ids & Post.left_outer_joins(:comments).pluck(:id)
- end
- def test_left_outer_joins_actually_does_a_left_outer_join
- queries = capture_sql { Author.left_outer_joins(:posts).to_a }
- assert queries.any? { |sql| /LEFT OUTER JOIN/i.match?(sql) }
- end
- def test_construct_finder_sql_ignores_empty_left_outer_joins_hash
- queries = capture_sql { Author.left_outer_joins({}).to_a }
- assert queries.none? { |sql| /LEFT OUTER JOIN/i.match?(sql) }
- end
- def test_construct_finder_sql_ignores_empty_left_outer_joins_array
- queries = capture_sql { Author.left_outer_joins([]).to_a }
- assert queries.none? { |sql| /LEFT OUTER JOIN/i.match?(sql) }
- end
- def test_left_outer_joins_forbids_to_use_string_as_argument
- assert_raise(ArgumentError) { Author.left_outer_joins('LEFT OUTER JOIN "posts" ON "posts"."user_id" = "users"."id"').to_a }
- end
- def test_join_conditions_added_to_join_clause
- queries = capture_sql { Author.left_outer_joins(:essays).to_a }
- assert queries.any? { |sql| /writer_type.*?=.*?(Author|\?|\$1|\:a1)/i.match?(sql) }
- assert queries.none? { |sql| /WHERE/i.match?(sql) }
- end
- def test_find_with_sti_join
- scope = Post.left_outer_joins(:special_comments).where(id: posts(:sti_comments).id)
- # The join should match SpecialComment and its subclasses only
- assert_empty scope.where("comments.type" => "Comment")
- assert_not_empty scope.where("comments.type" => "SpecialComment")
- assert_not_empty scope.where("comments.type" => "SubSpecialComment")
- end
- def test_does_not_override_select
- authors = Author.select("authors.name, #{%{(authors.author_address_id || ' ' || authors.author_address_extra_id) as addr_id}}").left_outer_joins(:posts)
- assert_predicate authors, :any?
- assert_respond_to authors.first, :addr_id
- end
- test "the default scope of the target is applied when joining associations" do
- author = Author.create! name: "Jon"
- author.categorizations.create!
- author.categorizations.create! special: true
- assert_equal [author], Author.where(id: author).left_outer_joins(:special_categorizations)
- end
- end