--- /dev/null
+require "cases/helper"
+require 'models/post'
+require 'models/person'
+require 'models/reader'
+require 'models/comment'
+
+class HasManyThroughAssociationsTest < ActiveRecord::TestCase
+ fixtures :posts, :readers, :people, :comments, :authors
+
+ def test_associate_existing
+ assert_queries(2) { posts(:thinking);people(:david) }
+
+ posts(:thinking).people
+
+ assert_queries(1) do
+ posts(:thinking).people << people(:david)
+ end
+
+ assert_queries(1) do
+ assert posts(:thinking).people.include?(people(:david))
+ end
+
+ assert posts(:thinking).reload.people(true).include?(people(:david))
+ end
+
+ def test_associating_new
+ assert_queries(1) { posts(:thinking) }
+ new_person = nil # so block binding catches it
+
+ assert_queries(0) do
+ new_person = Person.new :first_name => 'bob'
+ end
+
+ # Associating new records always saves them
+ # Thus, 1 query for the new person record, 1 query for the new join table record
+ assert_queries(2) do
+ posts(:thinking).people << new_person
+ end
+
+ assert_queries(1) do
+ assert posts(:thinking).people.include?(new_person)
+ end
+
+ assert posts(:thinking).reload.people(true).include?(new_person)
+ end
+
+ def test_associate_new_by_building
+ assert_queries(1) { posts(:thinking) }
+
+ assert_queries(0) do
+ posts(:thinking).people.build(:first_name=>"Bob")
+ posts(:thinking).people.new(:first_name=>"Ted")
+ end
+
+ # Should only need to load the association once
+ assert_queries(1) do
+ assert posts(:thinking).people.collect(&:first_name).include?("Bob")
+ assert posts(:thinking).people.collect(&:first_name).include?("Ted")
+ end
+
+ # 2 queries for each new record (1 to save the record itself, 1 for the join model)
+ # * 2 new records = 4
+ # + 1 query to save the actual post = 5
+ assert_queries(5) do
+ posts(:thinking).body += '-changed'
+ posts(:thinking).save
+ end
+
+ assert posts(:thinking).reload.people(true).collect(&:first_name).include?("Bob")
+ assert posts(:thinking).reload.people(true).collect(&:first_name).include?("Ted")
+ end
+
+ def test_delete_association
+ assert_queries(2){posts(:welcome);people(:michael); }
+
+ assert_queries(1) do
+ posts(:welcome).people.delete(people(:michael))
+ end
+
+ assert_queries(1) do
+ assert posts(:welcome).people.empty?
+ end
+
+ assert posts(:welcome).reload.people(true).empty?
+ end
+
+ def test_replace_association
+ assert_queries(4){posts(:welcome);people(:david);people(:michael); posts(:welcome).people(true)}
+
+ # 1 query to delete the existing reader (michael)
+ # 1 query to associate the new reader (david)
+ assert_queries(2) do
+ posts(:welcome).people = [people(:david)]
+ end
+
+ assert_queries(0){
+ assert posts(:welcome).people.include?(people(:david))
+ assert !posts(:welcome).people.include?(people(:michael))
+ }
+
+ assert posts(:welcome).reload.people(true).include?(people(:david))
+ assert !posts(:welcome).reload.people(true).include?(people(:michael))
+ end
+
+ def test_associate_with_create
+ assert_queries(1) { posts(:thinking) }
+
+ # 1 query for the new record, 1 for the join table record
+ # No need to update the actual collection yet!
+ assert_queries(2) do
+ posts(:thinking).people.create(:first_name=>"Jeb")
+ end
+
+ # *Now* we actually need the collection so it's loaded
+ assert_queries(1) do
+ assert posts(:thinking).people.collect(&:first_name).include?("Jeb")
+ end
+
+ assert posts(:thinking).reload.people(true).collect(&:first_name).include?("Jeb")
+ end
+
+ def test_associate_with_create_and_no_options
+ peeps = posts(:thinking).people.count
+ posts(:thinking).people.create(:first_name => 'foo')
+ assert_equal peeps + 1, posts(:thinking).people.count
+ end
+
+ def test_associate_with_create_exclamation_and_no_options
+ peeps = posts(:thinking).people.count
+ posts(:thinking).people.create!(:first_name => 'foo')
+ assert_equal peeps + 1, posts(:thinking).people.count
+ end
+
+ def test_clear_associations
+ assert_queries(2) { posts(:welcome);posts(:welcome).people(true) }
+
+ assert_queries(1) do
+ posts(:welcome).people.clear
+ end
+
+ assert_queries(0) do
+ assert posts(:welcome).people.empty?
+ end
+
+ assert posts(:welcome).reload.people(true).empty?
+ end
+
+ def test_association_callback_ordering
+ Post.reset_log
+ log = Post.log
+ post = posts(:thinking)
+
+ post.people_with_callbacks << people(:michael)
+ assert_equal [
+ [:added, :before, "Michael"],
+ [:added, :after, "Michael"]
+ ], log.last(2)
+
+ post.people_with_callbacks.push(people(:david), Person.create!(:first_name => "Bob"), Person.new(:first_name => "Lary"))
+ assert_equal [
+ [:added, :before, "David"],
+ [:added, :after, "David"],
+ [:added, :before, "Bob"],
+ [:added, :after, "Bob"],
+ [:added, :before, "Lary"],
+ [:added, :after, "Lary"]
+ ],log.last(6)
+
+ post.people_with_callbacks.build(:first_name => "Ted")
+ assert_equal [
+ [:added, :before, "Ted"],
+ [:added, :after, "Ted"]
+ ], log.last(2)
+
+ post.people_with_callbacks.create(:first_name => "Sam")
+ assert_equal [
+ [:added, :before, "Sam"],
+ [:added, :after, "Sam"]
+ ], log.last(2)
+
+ post.people_with_callbacks = [people(:michael),people(:david), Person.new(:first_name => "Julian"), Person.create!(:first_name => "Roger")]
+ assert_equal (%w(Ted Bob Sam Lary) * 2).sort, log[-12..-5].collect(&:last).sort
+ assert_equal [
+ [:added, :before, "Julian"],
+ [:added, :after, "Julian"],
+ [:added, :before, "Roger"],
+ [:added, :after, "Roger"]
+ ], log.last(4)
+
+ post.people_with_callbacks.clear
+ assert_equal (%w(Michael David Julian Roger) * 2).sort, log.last(8).collect(&:last).sort
+ end
+
+ def test_dynamic_find_should_respect_association_include
+ # SQL error in sort clause if :include is not included
+ # due to Unknown column 'comments.id'
+ assert Person.find(1).posts_with_comments_sorted_by_comment_id.find_by_title('Welcome to the weblog')
+ end
+
+ def test_count_with_include_should_alias_join_table
+ assert_equal 2, people(:michael).posts.count(:include => :readers)
+ end
+
+ def test_get_ids
+ assert_equal [posts(:welcome).id, posts(:authorless).id].sort, people(:michael).post_ids.sort
+ end
+
+ def test_get_ids_for_loaded_associations
+ person = people(:michael)
+ person.posts(true)
+ assert_queries(0) do
+ person.post_ids
+ person.post_ids
+ end
+ end
+
+ def test_get_ids_for_unloaded_associations_does_not_load_them
+ person = people(:michael)
+ assert !person.posts.loaded?
+ assert_equal [posts(:welcome).id, posts(:authorless).id].sort, person.post_ids.sort
+ assert !person.posts.loaded?
+ end
+
+ uses_mocha 'mocking Tag.transaction' do
+ def test_association_proxy_transaction_method_starts_transaction_in_association_class
+ Tag.expects(:transaction)
+ Post.find(:first).tags.transaction do
+ # nothing
+ end
+ end
+ end
+
+ def test_has_many_association_through_a_belongs_to_association_where_the_association_doesnt_exist
+ author = authors(:mary)
+ post = Post.create!(:title => "TITLE", :body => "BODY")
+ assert_equal [], post.author_favorites
+ end
+
+ def test_has_many_association_through_a_belongs_to_association
+ author = authors(:mary)
+ post = Post.create!(:author => author, :title => "TITLE", :body => "BODY")
+ author.author_favorites.create(:favorite_author_id => 1)
+ author.author_favorites.create(:favorite_author_id => 2)
+ author.author_favorites.create(:favorite_author_id => 3)
+ assert_equal post.author.author_favorites, post.author_favorites
+ end
+end
projects / depot.git / blobdiff