require "cases/helper"
require 'models/post'
require 'models/tagging'
require 'models/tag'
require 'models/comment'
require 'models/author'
require 'models/category'
require 'models/company'
require 'models/person'
require 'models/reader'
require 'models/owner'
require 'models/pet'
require 'models/reference'
require 'models/job'
require 'models/subscriber'
require 'models/subscription'
require 'models/book'
require 'models/developer'
require 'models/project'
require 'models/member'
require 'models/membership'
require 'models/club'
require 'models/categorization'
require 'models/sponsor'
class EagerAssociationTest < ActiveRecord::TestCase
fixtures :posts, :comments, :authors, :author_addresses, :categories, :categories_posts,
:companies, :accounts, :tags, :taggings, :people, :readers, :categorizations,
:owners, :pets, :author_favorites, :jobs, :references, :subscribers, :subscriptions, :books,
:developers, :projects, :developers_projects, :members, :memberships, :clubs, :sponsors
def setup
# preheat table existence caches
Comment.find_by_id(1)
end
def test_eager_with_has_one_through_join_model_with_conditions_on_the_through
member = Member.find(members(:some_other_guy).id, :include => :favourite_club)
assert_nil member.favourite_club
end
def test_loading_with_one_association
posts = Post.find(:all, :include => :comments)
post = posts.find { |p| p.id == 1 }
assert_equal 2, post.comments.size
assert post.comments.include?(comments(:greetings))
post = Post.find(:first, :include => :comments, :conditions => "posts.title = 'Welcome to the weblog'")
assert_equal 2, post.comments.size
assert post.comments.include?(comments(:greetings))
posts = Post.find(:all, :include => :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.find(:all, :include => :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_loading_conditions_with_or
posts = authors(:david).posts.find(:all, :include => :comments, :conditions => "comments.body like 'Normal%' OR comments.#{QUOTED_TYPE} = 'SpecialComment'")
assert_nil posts.detect { |p| p.author_id != authors(:david).id },
"expected to find only david's posts"
end
def test_with_ordering
list = Post.find(:all, :include => :comments, :order => "posts.id DESC")
[:other_by_mary, :other_by_bob, :misc_by_mary, :misc_by_bob, :eager_other,
:sti_habtm, :sti_post_and_comments, :sti_comments, :authorless, :thinking, :welcome
].each_with_index do |post, index|
assert_equal posts(post), list[index]
end
end
def test_with_two_tables_in_from_without_getting_double_quoted
posts = Post.select("posts.*").from("authors, posts").eager_load(:comments).where("posts.author_id = authors.id").order("posts.id").to_a
assert_equal 2, posts.first.comments.size
end
def test_loading_with_multiple_associations
posts = Post.find(:all, :include => [ :comments, :author, :categories ], :order => "posts.id")
assert_equal 2, posts.first.comments.size
assert_equal 2, posts.first.categories.size
assert posts.first.comments.include?(comments(:greetings))
end
def test_duplicate_middle_objects
comments = Comment.find :all, :conditions => 'post_id = 1', :include => [:post => :author]
assert_no_queries do
comments.each {|comment| comment.post.author.name}
end
end
def test_preloading_has_many_in_multiple_queries_with_more_ids_than_database_can_handle
Post.connection.expects(:in_clause_length).at_least_once.returns(5)
posts = Post.find(:all, :include=>:comments)
assert_equal 11, posts.size
end
def test_preloading_has_many_in_one_queries_when_database_has_no_limit_on_ids_it_can_handle
Post.connection.expects(:in_clause_length).at_least_once.returns(nil)
posts = Post.find(:all, :include=>:comments)
assert_equal 11, posts.size
end
def test_preloading_habtm_in_multiple_queries_with_more_ids_than_database_can_handle
Post.connection.expects(:in_clause_length).at_least_once.returns(5)
posts = Post.find(:all, :include=>:categories)
assert_equal 11, posts.size
end
def test_preloading_habtm_in_one_queries_when_database_has_no_limit_on_ids_it_can_handle
Post.connection.expects(:in_clause_length).at_least_once.returns(nil)
posts = Post.find(:all, :include=>:categories)
assert_equal 11, posts.size
end
def test_load_associated_records_in_one_query_when_adapter_has_no_limit
Post.connection.expects(:in_clause_length).at_least_once.returns(nil)
post = posts(:welcome)
assert_queries(2) do
Post.includes(:comments).where(:id => post.id).to_a
end
end
def test_load_associated_records_in_several_queries_when_many_ids_passed
Post.connection.expects(:in_clause_length).at_least_once.returns(1)
post1, post2 = posts(:welcome), posts(:thinking)
assert_queries(3) do
Post.includes(:comments).where(:id => [post1.id, post2.id]).to_a
end
end
def test_load_associated_records_in_one_query_when_a_few_ids_passed
Post.connection.expects(:in_clause_length).at_least_once.returns(3)
post = posts(:welcome)
assert_queries(2) do
Post.includes(:comments).where(:id => post.id).to_a
end
end
def test_including_duplicate_objects_from_belongs_to
popular_post = Post.create!(:title => 'foo', :body => "I like cars!")
comment = popular_post.comments.create!(:body => "lol")
popular_post.readers.create!(:person => people(:michael))
popular_post.readers.create!(:person => people(:david))
readers = Reader.find(:all, :conditions => ["post_id = ?", popular_post.id],
:include => {:post => :comments})
readers.each do |reader|
assert_equal [comment], reader.post.comments
end
end
def test_including_duplicate_objects_from_has_many
car_post = Post.create!(:title => 'foo', :body => "I like cars!")
car_post.categories << categories(:general)
car_post.categories << categories(:technology)
comment = car_post.comments.create!(:body => "hmm")
categories = Category.find(:all, :conditions => ["posts.id=?", car_post.id],
:include => {:posts => :comments})
categories.each do |category|
assert_equal [comment], category.posts[0].comments
end
end
def test_associations_loaded_for_all_records
post = Post.create!(:title => 'foo', :body => "I like cars!")
SpecialComment.create!(:body => 'Come on!', :post => post)
first_category = Category.create! :name => 'First!', :posts => [post]
second_category = Category.create! :name => 'Second!', :posts => [post]
categories = Category.where(:id => [first_category.id, second_category.id]).includes(:posts => :special_comments)
assert_equal categories.map { |category| category.posts.first.special_comments.loaded? }, [true, true]
end
def test_finding_with_includes_on_has_many_association_with_same_include_includes_only_once
author_id = authors(:david).id
author = assert_queries(3) { Author.find(author_id, :include => {:posts_with_comments => :comments}) } # find the author, then find the posts, then find the comments
author.posts_with_comments.each do |post_with_comments|
assert_equal post_with_comments.comments.length, post_with_comments.comments.count
assert_nil post_with_comments.comments.uniq!
end
end
def test_finding_with_includes_on_has_one_assocation_with_same_include_includes_only_once
author = authors(:david)
post = author.post_about_thinking_with_last_comment
last_comment = post.last_comment
author = assert_queries(ActiveRecord::IdentityMap.enabled? ? 2 : 3) { Author.find(author.id, :include => {:post_about_thinking_with_last_comment => :last_comment})} # find the author, then find the posts, then find the comments
assert_no_queries do
assert_equal post, author.post_about_thinking_with_last_comment
assert_equal last_comment, author.post_about_thinking_with_last_comment.last_comment
end
end
def test_finding_with_includes_on_belongs_to_association_with_same_include_includes_only_once
post = posts(:welcome)
author = post.author
author_address = author.author_address
post = assert_queries(ActiveRecord::IdentityMap.enabled? ? 2 : 3) { Post.find(post.id, :include => {:author_with_address => :author_address}) } # find the post, then find the author, then find the address
assert_no_queries do
assert_equal author, post.author_with_address
assert_equal author_address, post.author_with_address.author_address
end
end
def test_finding_with_includes_on_null_belongs_to_association_with_same_include_includes_only_once
post = posts(:welcome)
post.update_attributes!(:author => nil)
post = assert_queries(1) { Post.find(post.id, :include => {:author_with_address => :author_address}) } # find the post, then find the author which is null so no query for the author or address
assert_no_queries do
assert_equal nil, post.author_with_address
end
end
def test_finding_with_includes_on_null_belongs_to_polymorphic_association
sponsor = sponsors(:moustache_club_sponsor_for_groucho)
sponsor.update_attributes!(:sponsorable => nil)
sponsor = assert_queries(1) { Sponsor.find(sponsor.id, :include => :sponsorable) }
assert_no_queries do
assert_equal nil, sponsor.sponsorable
end
end
def test_loading_from_an_association
posts = authors(:david).posts.find(:all, :include => :comments, :order => "posts.id")
assert_equal 2, posts.first.comments.size
end
def test_loading_from_an_association_that_has_a_hash_of_conditions
assert_nothing_raised do
Author.find(:all, :include => :hello_posts_with_hash_conditions)
end
assert !Author.find(authors(:david).id, :include => :hello_posts_with_hash_conditions).hello_posts.empty?
end
def test_loading_with_no_associations
assert_nil Post.find(posts(:authorless).id, :include => :author).author
end
def test_nested_loading_with_no_associations
assert_nothing_raised do
Post.find(posts(:authorless).id, :include => {:author => :author_addresss})
end
end
def test_eager_association_loading_with_belongs_to_and_foreign_keys
pets = Pet.find(:all, :include => :owner)
assert_equal 3, pets.length
end
def test_eager_association_loading_with_belongs_to
comments = Comment.find(:all, :include => :post)
assert_equal 11, comments.length
titles = comments.map { |c| c.post.title }
assert titles.include?(posts(:welcome).title)
assert titles.include?(posts(:sti_post_and_comments).title)
end
def test_eager_association_loading_with_belongs_to_and_limit
comments = Comment.find(:all, :include => :post, :limit => 5, :order => 'comments.id')
assert_equal 5, comments.length
assert_equal [1,2,3,5,6], comments.collect { |c| c.id }
end
def test_eager_association_loading_with_belongs_to_and_limit_and_conditions
comments = Comment.find(:all, :include => :post, :conditions => 'post_id = 4', :limit => 3, :order => 'comments.id')
assert_equal 3, comments.length
assert_equal [5,6,7], comments.collect { |c| c.id }
end
def test_eager_association_loading_with_belongs_to_and_limit_and_offset
comments = Comment.find(:all, :include => :post, :limit => 3, :offset => 2, :order => 'comments.id')
assert_equal 3, comments.length
assert_equal [3,5,6], comments.collect { |c| c.id }
end
def test_eager_association_loading_with_belongs_to_and_limit_and_offset_and_conditions
comments = Comment.find(:all, :include => :post, :conditions => 'post_id = 4', :limit => 3, :offset => 1, :order => 'comments.id')
assert_equal 3, comments.length
assert_equal [6,7,8], comments.collect { |c| c.id }
end
def test_eager_association_loading_with_belongs_to_and_limit_and_offset_and_conditions_array
comments = Comment.find(:all, :include => :post, :conditions => ['post_id = ?',4], :limit => 3, :offset => 1, :order => 'comments.id')
assert_equal 3, comments.length
assert_equal [6,7,8], comments.collect { |c| c.id }
end
def test_eager_association_loading_with_belongs_to_and_conditions_string_with_unquoted_table_name
assert_nothing_raised do
Comment.find(:all, :include => :post, :conditions => ['posts.id = ?',4])
end
end
def test_eager_association_loading_with_belongs_to_and_conditions_hash
comments = []
assert_nothing_raised do
comments = Comment.find(:all, :include => :post, :conditions => {:posts => {:id => 4}}, :limit => 3, :order => 'comments.id')
end
assert_equal 3, comments.length
assert_equal [5,6,7], comments.collect { |c| c.id }
assert_no_queries do
comments.first.post
end
end
def test_eager_association_loading_with_belongs_to_and_conditions_string_with_quoted_table_name
quoted_posts_id= Comment.connection.quote_table_name('posts') + '.' + Comment.connection.quote_column_name('id')
assert_nothing_raised do
Comment.find(:all, :include => :post, :conditions => ["#{quoted_posts_id} = ?",4])
end
end
def test_eager_association_loading_with_belongs_to_and_order_string_with_unquoted_table_name
assert_nothing_raised do
Comment.find(:all, :include => :post, :order => 'posts.id')
end
end
def test_eager_association_loading_with_belongs_to_and_order_string_with_quoted_table_name
quoted_posts_id= Comment.connection.quote_table_name('posts') + '.' + Comment.connection.quote_column_name('id')
assert_nothing_raised do
Comment.find(:all, :include => :post, :order => quoted_posts_id)
end
end
def test_eager_association_loading_with_belongs_to_and_limit_and_multiple_associations
posts = Post.find(:all, :include => [:author, :very_special_comment], :limit => 1, :order => 'posts.id')
assert_equal 1, posts.length
assert_equal [1], posts.collect { |p| p.id }
end
def test_eager_association_loading_with_belongs_to_and_limit_and_offset_and_multiple_associations
posts = Post.find(:all, :include => [:author, :very_special_comment], :limit => 1, :offset => 1, :order => 'posts.id')
assert_equal 1, posts.length
assert_equal [2], posts.collect { |p| p.id }
end
def test_eager_association_loading_with_belongs_to_inferred_foreign_key_from_association_name
author_favorite = AuthorFavorite.find(:first, :include => :favorite_author)
assert_equal authors(:mary), assert_no_queries { author_favorite.favorite_author }
end
def test_eager_load_belongs_to_quotes_table_and_column_names
job = Job.find jobs(:unicyclist).id, :include => :ideal_reference
references(:michael_unicyclist)
assert_no_queries{ assert_equal references(:michael_unicyclist), job.ideal_reference}
end
def test_eager_load_has_one_quotes_table_and_column_names
michael = Person.find(people(:michael), :include => :favourite_reference)
references(:michael_unicyclist)
assert_no_queries{ assert_equal references(:michael_unicyclist), michael.favourite_reference}
end
def test_eager_load_has_many_quotes_table_and_column_names
michael = Person.find(people(:michael), :include => :references)
references(:michael_magician,:michael_unicyclist)
assert_no_queries{ assert_equal references(:michael_magician,:michael_unicyclist), michael.references.sort_by(&:id) }
end
def test_eager_load_has_many_through_quotes_table_and_column_names
michael = Person.find(people(:michael), :include => :jobs)
jobs(:magician, :unicyclist)
assert_no_queries{ assert_equal jobs(:unicyclist, :magician), michael.jobs.sort_by(&:id) }
end
def test_eager_load_has_many_with_string_keys
subscriptions = subscriptions(:webster_awdr, :webster_rfr)
subscriber =Subscriber.find(subscribers(:second).id, :include => :subscriptions)
assert_equal subscriptions, subscriber.subscriptions.sort_by(&:id)
end
def test_eager_load_has_many_through_with_string_keys
books = books(:awdr, :rfr)
subscriber = Subscriber.find(subscribers(:second).id, :include => :books)
assert_equal books, subscriber.books.sort_by(&:id)
end
def test_eager_load_belongs_to_with_string_keys
subscriber = subscribers(:second)
subscription = Subscription.find(subscriptions(:webster_awdr).id, :include => :subscriber)
assert_equal subscriber, subscription.subscriber
end
def test_eager_association_loading_with_explicit_join
posts = Post.find(:all, :include => :comments, :joins => "INNER JOIN authors ON posts.author_id = authors.id AND authors.name = 'Mary'", :limit => 1, :order => 'author_id')
assert_equal 1, posts.length
end
def test_eager_with_has_many_through
posts_with_comments = people(:michael).posts.find(:all, :include => :comments, :order => 'posts.id')
posts_with_author = people(:michael).posts.find(:all, :include => :author, :order => 'posts.id')
posts_with_comments_and_author = people(:michael).posts.find(:all, :include => [ :comments, :author ], :order => 'posts.id')
assert_equal 2, posts_with_comments.inject(0) { |sum, post| sum += post.comments.size }
assert_equal authors(:david), assert_no_queries { posts_with_author.first.author }
assert_equal authors(:david), assert_no_queries { posts_with_comments_and_author.first.author }
end
def test_eager_with_has_many_through_a_belongs_to_association
author = authors(:mary)
Post.create!(:author => author, :title => "TITLE", :body => "BODY")
author.author_favorites.create(:favorite_author_id => 1)
author.author_favorites.create(:favorite_author_id => 2)
posts_with_author_favorites = author.posts.find(:all, :include => :author_favorites)
assert_no_queries { posts_with_author_favorites.first.author_favorites.first.author_id }
end
def test_eager_with_has_many_through_an_sti_join_model
author = Author.find(:first, :include => :special_post_comments, :order => 'authors.id')
assert_equal [comments(:does_it_hurt)], assert_no_queries { author.special_post_comments }
end
def test_eager_with_has_many_through_an_sti_join_model_with_conditions_on_both
author = Author.find(:first, :include => :special_nonexistant_post_comments, :order => 'authors.id')
assert_equal [], author.special_nonexistant_post_comments
end
def test_eager_with_has_many_through_join_model_with_conditions
assert_equal Author.find(:first, :include => :hello_post_comments,
:order => 'authors.id').hello_post_comments.sort_by(&:id),
Author.find(:first, :order => 'authors.id').hello_post_comments.sort_by(&:id)
end
def test_eager_with_has_many_through_join_model_with_conditions_on_top_level
assert_equal comments(:more_greetings), Author.find(authors(:david).id, :include => :comments_with_order_and_conditions).comments_with_order_and_conditions.first
end
def test_eager_with_has_many_through_join_model_with_include
author_comments = Author.find(authors(:david).id, :include => :comments_with_include).comments_with_include.to_a
assert_no_queries do
author_comments.first.post.title
end
end
def test_eager_with_has_many_through_with_conditions_join_model_with_include
post_tags = Post.find(posts(:welcome).id).misc_tags
eager_post_tags = Post.find(1, :include => :misc_tags).misc_tags
assert_equal post_tags, eager_post_tags
end
def test_eager_with_has_many_and_limit
posts = Post.find(:all, :order => 'posts.id asc', :include => [ :author, :comments ], :limit => 2)
assert_equal 2, posts.size
assert_equal 3, posts.inject(0) { |sum, post| sum += post.comments.size }
end
def test_eager_with_has_many_and_limit_and_conditions
if current_adapter?(:OpenBaseAdapter)
posts = Post.find(:all, :include => [ :author, :comments ], :limit => 2, :conditions => "FETCHBLOB(posts.body) = 'hello'", :order => "posts.id")
else
posts = Post.find(:all, :include => [ :author, :comments ], :limit => 2, :conditions => "posts.body = 'hello'", :order => "posts.id")
end
assert_equal 2, posts.size
assert_equal [4,5], posts.collect { |p| p.id }
end
def test_eager_with_has_many_and_limit_and_conditions_array
if current_adapter?(:OpenBaseAdapter)
posts = Post.find(:all, :include => [ :author, :comments ], :limit => 2, :conditions => [ "FETCHBLOB(posts.body) = ?", 'hello' ], :order => "posts.id")
else
posts = Post.find(:all, :include => [ :author, :comments ], :limit => 2, :conditions => [ "posts.body = ?", 'hello' ], :order => "posts.id")
end
assert_equal 2, posts.size
assert_equal [4,5], posts.collect { |p| p.id }
end
def test_eager_with_has_many_and_limit_and_conditions_array_on_the_eagers
posts = Post.find(:all, :include => [ :author, :comments ], :limit => 2, :conditions => [ "authors.name = ?", 'David' ])
assert_equal 2, posts.size
count = Post.count(:include => [ :author, :comments ], :limit => 2, :conditions => [ "authors.name = ?", 'David' ])
assert_equal count, posts.size
end
def test_eager_with_has_many_and_limit_and_high_offset
posts = Post.find(:all, :include => [ :author, :comments ], :limit => 2, :offset => 10, :conditions => [ "authors.name = ?", 'David' ])
assert_equal 0, posts.size
end
def test_eager_with_has_many_and_limit_and_high_offset_and_multiple_array_conditions
assert_queries(1) do
posts = Post.find(:all, :include => [ :author, :comments ], :limit => 2, :offset => 10,
:conditions => [ "authors.name = ? and comments.body = ?", 'David', 'go crazy' ])
assert_equal 0, posts.size
end
end
def test_eager_with_has_many_and_limit_and_high_offset_and_multiple_hash_conditions
assert_queries(1) do
posts = Post.find(:all, :include => [ :author, :comments ], :limit => 2, :offset => 10,
:conditions => { 'authors.name' => 'David', 'comments.body' => 'go crazy' })
assert_equal 0, posts.size
end
end
def test_count_eager_with_has_many_and_limit_and_high_offset
posts = Post.count(:all, :include => [ :author, :comments ], :limit => 2, :offset => 10, :conditions => [ "authors.name = ?", 'David' ])
assert_equal 0, posts
end
def test_eager_with_has_many_and_limit_with_no_results
posts = Post.find(:all, :include => [ :author, :comments ], :limit => 2, :conditions => "posts.title = 'magic forest'")
assert_equal 0, posts.size
end
def test_eager_count_performed_on_a_has_many_association_with_multi_table_conditional
author = authors(:david)
author_posts_without_comments = author.posts.select { |post| post.comments.blank? }
assert_equal author_posts_without_comments.size, author.posts.count(:all, :include => :comments, :conditions => 'comments.id is null')
end
def test_eager_count_performed_on_a_has_many_through_association_with_multi_table_conditional
person = people(:michael)
person_posts_without_comments = person.posts.select { |post| post.comments.blank? }
assert_equal person_posts_without_comments.size, person.posts_with_no_comments.count
end
def test_eager_with_has_and_belongs_to_many_and_limit
posts = Post.find(:all, :include => :categories, :order => "posts.id", :limit => 3)
assert_equal 3, posts.size
assert_equal 2, posts[0].categories.size
assert_equal 1, posts[1].categories.size
assert_equal 0, posts[2].categories.size
assert posts[0].categories.include?(categories(:technology))
assert posts[1].categories.include?(categories(:general))
end
# This is only really relevant when the identity map is off. Since the preloader for habtm
# gets raw row hashes from the database and then instantiates them, this test ensures that
# it only instantiates one actual object per record from the database.
def test_has_and_belongs_to_many_should_not_instantiate_same_records_multiple_times
welcome = posts(:welcome)
categories = Category.includes(:posts)
general = categories.find { |c| c == categories(:general) }
technology = categories.find { |c| c == categories(:technology) }
post1 = general.posts.to_a.find { |p| p == posts(:welcome) }
post2 = technology.posts.to_a.find { |p| p == posts(:welcome) }
assert_equal post1.object_id, post2.object_id
end
def test_eager_with_has_many_and_limit_and_conditions_on_the_eagers
posts = authors(:david).posts.find(:all,
:include => :comments,
:conditions => "comments.body like 'Normal%' OR comments.#{QUOTED_TYPE}= 'SpecialComment'",
:limit => 2
)
assert_equal 2, posts.size
count = Post.count(
:include => [ :comments, :author ],
:conditions => "authors.name = 'David' AND (comments.body like 'Normal%' OR comments.#{QUOTED_TYPE}= 'SpecialComment')",
:limit => 2
)
assert_equal count, posts.size
end
def test_eager_with_has_many_and_limit_and_scoped_conditions_on_the_eagers
posts = nil
Post.send(:with_scope, :find => {
:include => :comments,
:conditions => "comments.body like 'Normal%' OR comments.#{QUOTED_TYPE}= 'SpecialComment'"
}) do
posts = authors(:david).posts.find(:all, :limit => 2)
assert_equal 2, posts.size
end
Post.send(:with_scope, :find => {
:include => [ :comments, :author ],
:conditions => "authors.name = 'David' AND (comments.body like 'Normal%' OR comments.#{QUOTED_TYPE}= 'SpecialComment')"
}) do
count = Post.count(:limit => 2)
assert_equal count, posts.size
end
end
def test_eager_with_has_many_and_limit_and_scoped_and_explicit_conditions_on_the_eagers
Post.send(:with_scope, :find => { :conditions => "1=1" }) do
posts = authors(:david).posts.find(:all,
:include => :comments,
:conditions => "comments.body like 'Normal%' OR comments.#{QUOTED_TYPE}= 'SpecialComment'",
:limit => 2
)
assert_equal 2, posts.size
count = Post.count(
:include => [ :comments, :author ],
:conditions => "authors.name = 'David' AND (comments.body like 'Normal%' OR comments.#{QUOTED_TYPE}= 'SpecialComment')",
:limit => 2
)
assert_equal count, posts.size
end
end
def test_eager_with_scoped_order_using_association_limiting_without_explicit_scope
posts_with_explicit_order = Post.find(:all, :conditions => 'comments.id is not null', :include => :comments, :order => 'posts.id DESC', :limit => 2)
posts_with_scoped_order = Post.send(:with_scope, :find => {:order => 'posts.id DESC'}) do
Post.find(:all, :conditions => 'comments.id is not null', :include => :comments, :limit => 2)
end
assert_equal posts_with_explicit_order, posts_with_scoped_order
end
def test_eager_association_loading_with_habtm
posts = Post.find(:all, :include => :categories, :order => "posts.id")
assert_equal 2, posts[0].categories.size
assert_equal 1, posts[1].categories.size
assert_equal 0, posts[2].categories.size
assert posts[0].categories.include?(categories(:technology))
assert posts[1].categories.include?(categories(:general))
end
def test_eager_with_inheritance
SpecialPost.find(:all, :include => [ :comments ])
end
def test_eager_has_one_with_association_inheritance
post = Post.find(4, :include => [ :very_special_comment ])
assert_equal "VerySpecialComment", post.very_special_comment.class.to_s
end
def test_eager_has_many_with_association_inheritance
post = Post.find(4, :include => [ :special_comments ])
post.special_comments.each do |special_comment|
assert special_comment.is_a?(SpecialComment)
end
end
def test_eager_habtm_with_association_inheritance
post = Post.find(6, :include => [ :special_categories ])
assert_equal 1, post.special_categories.size
post.special_categories.each do |special_category|
assert_equal "SpecialCategory", special_category.class.to_s
end
end
def test_eager_with_has_one_dependent_does_not_destroy_dependent
assert_not_nil companies(:first_firm).account
f = Firm.find(:first, :include => :account,
:conditions => ["companies.name = ?", "37signals"])
assert_not_nil f.account
assert_equal companies(:first_firm, :reload).account, f.account
end
def test_eager_with_multi_table_conditional_properly_counts_the_records_when_using_size
author = authors(:david)
posts_with_no_comments = author.posts.select { |post| post.comments.blank? }
assert_equal posts_with_no_comments.size, author.posts_with_no_comments.size
assert_equal posts_with_no_comments, author.posts_with_no_comments
end
def test_eager_with_invalid_association_reference
assert_raise(ActiveRecord::ConfigurationError, "Association was not found; perhaps you misspelled it? You specified :include => :monkeys") {
Post.find(6, :include=> :monkeys )
}
assert_raise(ActiveRecord::ConfigurationError, "Association was not found; perhaps you misspelled it? You specified :include => :monkeys") {
Post.find(6, :include=>[ :monkeys ])
}
assert_raise(ActiveRecord::ConfigurationError, "Association was not found; perhaps you misspelled it? You specified :include => :monkeys") {
Post.find(6, :include=>[ 'monkeys' ])
}
assert_raise(ActiveRecord::ConfigurationError, "Association was not found; perhaps you misspelled it? You specified :include => :monkeys, :elephants") {
Post.find(6, :include=>[ :monkeys, :elephants ])
}
end
def find_all_ordered(className, include=nil)
className.find(:all, :order=>"#{className.table_name}.#{className.primary_key}", :include=>include)
end
def test_limited_eager_with_order
assert_equal posts(:thinking, :sti_comments), Post.find(:all, :include => [:author, :comments], :conditions => "authors.name = 'David'", :order => 'UPPER(posts.title)', :limit => 2, :offset => 1)
assert_equal posts(:sti_post_and_comments, :sti_comments), Post.find(:all, :include => [:author, :comments], :conditions => "authors.name = 'David'", :order => 'UPPER(posts.title) DESC', :limit => 2, :offset => 1)
end
def test_limited_eager_with_multiple_order_columns
assert_equal posts(:thinking, :sti_comments), Post.find(:all, :include => [:author, :comments], :conditions => "authors.name = 'David'", :order => ['UPPER(posts.title)', 'posts.id'], :limit => 2, :offset => 1)
assert_equal posts(:sti_post_and_comments, :sti_comments), Post.find(:all, :include => [:author, :comments], :conditions => "authors.name = 'David'", :order => ['UPPER(posts.title) DESC', 'posts.id'], :limit => 2, :offset => 1)
end
def test_limited_eager_with_numeric_in_association
assert_equal people(:david, :susan), Person.find(:all, :include => [:readers, :primary_contact, :number1_fan], :conditions => "number1_fans_people.first_name like 'M%'", :order => 'people.id', :limit => 2, :offset => 0)
end
def test_preload_with_interpolation
post = Post.includes(:comments_with_interpolated_conditions).find(posts(:welcome).id)
assert_equal [comments(:greetings)], post.comments_with_interpolated_conditions
post = Post.joins(:comments_with_interpolated_conditions).find(posts(:welcome).id)
assert_equal [comments(:greetings)], post.comments_with_interpolated_conditions
end
def test_polymorphic_type_condition
post = Post.find(posts(:thinking).id, :include => :taggings)
assert post.taggings.include?(taggings(:thinking_general))
post = SpecialPost.find(posts(:thinking).id, :include => :taggings)
assert post.taggings.include?(taggings(:thinking_general))
end
def test_eager_with_multiple_associations_with_same_table_has_many_and_habtm
# Eager includes of has many and habtm associations aren't necessarily sorted in the same way
def assert_equal_after_sort(item1, item2, item3 = nil)
assert_equal(item1.sort{|a,b| a.id <=> b.id}, item2.sort{|a,b| a.id <=> b.id})
assert_equal(item3.sort{|a,b| a.id <=> b.id}, item2.sort{|a,b| a.id <=> b.id}) if item3
end
# Test regular association, association with conditions, association with
# STI, and association with conditions assured not to be true
post_types = [:posts, :other_posts, :special_posts]
# test both has_many and has_and_belongs_to_many
[Author, Category].each do |className|
d1 = find_all_ordered(className)
# test including all post types at once
d2 = find_all_ordered(className, post_types)
d1.each_index do |i|
assert_equal(d1[i], d2[i])
assert_equal_after_sort(d1[i].posts, d2[i].posts)
post_types[1..-1].each do |post_type|
# test including post_types together
d3 = find_all_ordered(className, [:posts, post_type])
assert_equal(d1[i], d3[i])
assert_equal_after_sort(d1[i].posts, d3[i].posts)
assert_equal_after_sort(d1[i].send(post_type), d2[i].send(post_type), d3[i].send(post_type))
end
end
end
end
def test_eager_with_multiple_associations_with_same_table_has_one
d1 = find_all_ordered(Firm)
d2 = find_all_ordered(Firm, :account)
d1.each_index do |i|
assert_equal(d1[i], d2[i])
assert_equal(d1[i].account, d2[i].account)
end
end
def test_eager_with_multiple_associations_with_same_table_belongs_to
firm_types = [:firm, :firm_with_basic_id, :firm_with_other_name, :firm_with_condition]
d1 = find_all_ordered(Client)
d2 = find_all_ordered(Client, firm_types)
d1.each_index do |i|
assert_equal(d1[i], d2[i])
firm_types.each { |type| assert_equal(d1[i].send(type), d2[i].send(type)) }
end
end
def test_eager_with_valid_association_as_string_not_symbol
assert_nothing_raised { Post.find(:all, :include => 'comments') }
end
def test_eager_with_floating_point_numbers
assert_queries(2) do
# Before changes, the floating point numbers will be interpreted as table names and will cause this to run in one query
Comment.find :all, :conditions => "123.456 = 123.456", :include => :post
end
end
def test_preconfigured_includes_with_belongs_to
author = posts(:welcome).author_with_posts
assert_no_queries {assert_equal 5, author.posts.size}
end
def test_preconfigured_includes_with_has_one
comment = posts(:sti_comments).very_special_comment_with_post
assert_no_queries {assert_equal posts(:sti_comments), comment.post}
end
def test_preconfigured_includes_with_has_many
posts = authors(:david).posts_with_comments
one = posts.detect { |p| p.id == 1 }
assert_no_queries do
assert_equal 5, posts.size
assert_equal 2, one.comments.size
end
end
def test_preconfigured_includes_with_habtm
posts = authors(:david).posts_with_categories
one = posts.detect { |p| p.id == 1 }
assert_no_queries do
assert_equal 5, posts.size
assert_equal 2, one.categories.size
end
end
def test_preconfigured_includes_with_has_many_and_habtm
posts = authors(:david).posts_with_comments_and_categories
one = posts.detect { |p| p.id == 1 }
assert_no_queries do
assert_equal 5, posts.size
assert_equal 2, one.comments.size
assert_equal 2, one.categories.size
end
end
def test_count_with_include
if current_adapter?(:SybaseAdapter)
assert_equal 3, authors(:david).posts_with_comments.count(:conditions => "len(comments.body) > 15")
elsif current_adapter?(:OpenBaseAdapter)
assert_equal 3, authors(:david).posts_with_comments.count(:conditions => "length(FETCHBLOB(comments.body)) > 15")
else
assert_equal 3, authors(:david).posts_with_comments.count(:conditions => "length(comments.body) > 15")
end
end
def test_load_with_sti_sharing_association
assert_queries(2) do #should not do 1 query per subclass
Comment.find :all, :include => :post
end
end
def test_conditions_on_join_table_with_include_and_limit
assert_equal 3, Developer.find(:all, :include => 'projects', :conditions => 'developers_projects.access_level = 1', :limit => 5).size
end
def test_order_on_join_table_with_include_and_limit
assert_equal 5, Developer.find(:all, :include => 'projects', :order => 'developers_projects.joined_on DESC', :limit => 5).size
end
def test_eager_loading_with_order_on_joined_table_preloads
posts = assert_queries(2) do
Post.find(:all, :joins => :comments, :include => :author, :order => 'comments.id DESC')
end
assert_equal posts(:eager_other), posts[1]
assert_equal authors(:mary), assert_no_queries { posts[1].author}
end
def test_eager_loading_with_conditions_on_joined_table_preloads
posts = assert_queries(2) do
Post.find(:all, :select => 'distinct posts.*', :include => :author, :joins => [:comments], :conditions => "comments.body like 'Thank you%'", :order => 'posts.id')
end
assert_equal [posts(:welcome)], posts
assert_equal authors(:david), assert_no_queries { posts[0].author}
posts = assert_queries(ActiveRecord::IdentityMap.enabled? ? 1 : 2) do
Post.find(:all, :select => 'distinct posts.*', :include => :author, :joins => [:comments], :conditions => "comments.body like 'Thank you%'", :order => 'posts.id')
end
assert_equal [posts(:welcome)], posts
assert_equal authors(:david), assert_no_queries { posts[0].author}
posts = assert_queries(ActiveRecord::IdentityMap.enabled? ? 1 : 2) do
Post.find(:all, :include => :author, :joins => {:taggings => :tag}, :conditions => "tags.name = 'General'", :order => 'posts.id')
end
assert_equal posts(:welcome, :thinking), posts
posts = assert_queries(ActiveRecord::IdentityMap.enabled? ? 1 : 2) do
Post.find(:all, :include => :author, :joins => {:taggings => {:tag => :taggings}}, :conditions => "taggings_tags.super_tag_id=2", :order => 'posts.id')
end
assert_equal posts(:welcome, :thinking), posts
end
def test_eager_loading_with_conditions_on_string_joined_table_preloads
posts = assert_queries(2) do
Post.find(:all, :select => 'distinct posts.*', :include => :author, :joins => "INNER JOIN comments on comments.post_id = posts.id", :conditions => "comments.body like 'Thank you%'", :order => 'posts.id')
end
assert_equal [posts(:welcome)], posts
assert_equal authors(:david), assert_no_queries { posts[0].author}
posts = assert_queries(ActiveRecord::IdentityMap.enabled? ? 1 : 2) do
Post.find(:all, :select => 'distinct posts.*', :include => :author, :joins => ["INNER JOIN comments on comments.post_id = posts.id"], :conditions => "comments.body like 'Thank you%'", :order => 'posts.id')
end
assert_equal [posts(:welcome)], posts
assert_equal authors(:david), assert_no_queries { posts[0].author}
end
def test_eager_loading_with_select_on_joined_table_preloads
posts = assert_queries(2) do
Post.find(:all, :select => 'posts.*, authors.name as author_name', :include => :comments, :joins => :author, :order => 'posts.id')
end
assert_equal 'David', posts[0].author_name
assert_equal posts(:welcome).comments, assert_no_queries { posts[0].comments}
end
def test_eager_loading_with_conditions_on_join_model_preloads
Author.columns
authors = assert_queries(2) do
Author.find(:all, :include => :author_address, :joins => :comments, :conditions => "posts.title like 'Welcome%'")
end
assert_equal authors(:david), authors[0]
assert_equal author_addresses(:david_address), authors[0].author_address
end
def test_preload_belongs_to_uses_exclusive_scope
people = Person.males.find(:all, :include => :primary_contact)
assert_not_equal people.length, 0
people.each do |person|
assert_no_queries {assert_not_nil person.primary_contact}
assert_equal Person.find(person.id).primary_contact, person.primary_contact
end
end
def test_preload_has_many_uses_exclusive_scope
people = Person.males.find :all, :include => :agents
people.each do |person|
assert_equal Person.find(person.id).agents, person.agents
end
end
def test_preload_has_many_using_primary_key
expected = Firm.find(:first).clients_using_primary_key.to_a
firm = Firm.find :first, :include => :clients_using_primary_key
assert_no_queries do
assert_equal expected, firm.clients_using_primary_key
end
end
def test_include_has_many_using_primary_key
expected = Firm.find(1).clients_using_primary_key.sort_by(&:name)
# Oracle adapter truncates alias to 30 characters
if current_adapter?(:OracleAdapter)
firm = Firm.find 1, :include => :clients_using_primary_key, :order => 'clients_using_primary_keys_companies'[0,30]+'.name'
else
firm = Firm.find 1, :include => :clients_using_primary_key, :order => 'clients_using_primary_keys_companies.name'
end
assert_no_queries do
assert_equal expected, firm.clients_using_primary_key
end
end
def test_preload_has_one_using_primary_key
expected = accounts(:signals37)
firm = Firm.find :first, :include => :account_using_primary_key, :order => 'companies.id'
assert_no_queries do
assert_equal expected, firm.account_using_primary_key
end
end
def test_include_has_one_using_primary_key
expected = accounts(:signals37)
firm = Firm.find(:all, :include => :account_using_primary_key, :order => 'accounts.id').detect {|f| f.id == 1}
assert_no_queries do
assert_equal expected, firm.account_using_primary_key
end
end
def test_preloading_empty_belongs_to
c = Client.create!(:name => 'Foo', :client_of => Company.maximum(:id) + 1)
client = assert_queries(2) { Client.preload(:firm).find(c.id) }
assert_no_queries { assert_nil client.firm }
end
def test_preloading_empty_belongs_to_polymorphic
t = Tagging.create!(:taggable_type => 'Post', :taggable_id => Post.maximum(:id) + 1, :tag => tags(:general))
tagging = assert_queries(ActiveRecord::IdentityMap.enabled? ? 1 : 2) { Tagging.preload(:taggable).find(t.id) }
assert_no_queries { assert_nil tagging.taggable }
end
def test_preloading_through_empty_belongs_to
c = Client.create!(:name => 'Foo', :client_of => Company.maximum(:id) + 1)
client = assert_queries(2) { Client.preload(:accounts).find(c.id) }
assert_no_queries { assert client.accounts.empty? }
end
def test_preloading_has_many_through_with_uniq
mary = Author.includes(:unique_categorized_posts).where(:id => authors(:mary).id).first
assert_equal 1, mary.unique_categorized_posts.length
assert_equal 1, mary.unique_categorized_post_ids.length
end
def test_preloading_polymorphic_with_custom_foreign_type
sponsor = sponsors(:moustache_club_sponsor_for_groucho)
groucho = members(:groucho)
sponsor = assert_queries(2) {
Sponsor.includes(:thing).where(:id => sponsor.id).first
}
assert_no_queries { assert_equal groucho, sponsor.thing }
end
end
