diff options
Diffstat (limited to 'activerecord/test/cases/associations/eager_test.rb')
| -rw-r--r-- | activerecord/test/cases/associations/eager_test.rb | 110 |
1 files changed, 76 insertions, 34 deletions
diff --git a/activerecord/test/cases/associations/eager_test.rb b/activerecord/test/cases/associations/eager_test.rb index 0ecf2ddfd1..874d53c51f 100644 --- a/activerecord/test/cases/associations/eager_test.rb +++ b/activerecord/test/cases/associations/eager_test.rb @@ -24,6 +24,8 @@ require 'models/membership' require 'models/club' require 'models/categorization' require 'models/sponsor' +require 'models/mentor' +require 'models/contract' class EagerAssociationTest < ActiveRecord::TestCase fixtures :posts, :comments, :authors, :essays, :author_addresses, :categories, :categories_posts, @@ -108,53 +110,57 @@ class EagerAssociationTest < ActiveRecord::TestCase end def test_preloading_has_many_in_multiple_queries_with_more_ids_than_database_can_handle - Comment.connection.expects(:in_clause_length).at_least_once.returns(5) - posts = Post.all.merge!(:includes=>:comments).to_a - assert_equal 11, posts.size + assert_called(Comment.connection, :in_clause_length, returns: 5) do + posts = Post.all.merge!(:includes=>:comments).to_a + assert_equal 11, posts.size + end end def test_preloading_has_many_in_one_queries_when_database_has_no_limit_on_ids_it_can_handle - Comment.connection.expects(:in_clause_length).at_least_once.returns(nil) - posts = Post.all.merge!(:includes=>:comments).to_a - assert_equal 11, posts.size + assert_called(Comment.connection, :in_clause_length, returns: nil) do + posts = Post.all.merge!(:includes=>:comments).to_a + assert_equal 11, posts.size + end end def test_preloading_habtm_in_multiple_queries_with_more_ids_than_database_can_handle - Comment.connection.expects(:in_clause_length).at_least_once.returns(5) - posts = Post.all.merge!(:includes=>:categories).to_a - assert_equal 11, posts.size + assert_called(Comment.connection, :in_clause_length, times: 2, returns: 5) do + posts = Post.all.merge!(:includes=>:categories).to_a + assert_equal 11, posts.size + end end def test_preloading_habtm_in_one_queries_when_database_has_no_limit_on_ids_it_can_handle - Comment.connection.expects(:in_clause_length).at_least_once.returns(nil) - posts = Post.all.merge!(:includes=>:categories).to_a - assert_equal 11, posts.size + assert_called(Comment.connection, :in_clause_length, times: 2, returns: nil) do + posts = Post.all.merge!(:includes=>:categories).to_a + assert_equal 11, posts.size + end end def test_load_associated_records_in_one_query_when_adapter_has_no_limit - Comment.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 + assert_called(Comment.connection, :in_clause_length, returns: nil) do + post = posts(:welcome) + assert_queries(2) do + Post.includes(:comments).where(:id => post.id).to_a + end end end def test_load_associated_records_in_several_queries_when_many_ids_passed - Comment.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 + assert_called(Comment.connection, :in_clause_length, returns: 1) do + post1, post2 = posts(:welcome), posts(:thinking) + assert_queries(3) do + Post.includes(:comments).where(:id => [post1.id, post2.id]).to_a + end end end def test_load_associated_records_in_one_query_when_a_few_ids_passed - Comment.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 + assert_called(Comment.connection, :in_clause_length, returns: 3) do + post = posts(:welcome) + assert_queries(2) do + Post.includes(:comments).where(:id => post.id).to_a + end end end @@ -1167,12 +1173,30 @@ class EagerAssociationTest < ActiveRecord::TestCase assert_no_queries { assert client.accounts.empty? } end - def test_preloading_has_many_through_with_uniq + def test_preloading_has_many_through_with_distinct 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_has_one_using_reorder + klass = Class.new(ActiveRecord::Base) do + def self.name; "TempAuthor"; end + self.table_name = "authors" + has_one :post, class_name: "PostWithDefaultScope", foreign_key: :author_id + has_one :reorderd_post, -> { reorder(title: :desc) }, class_name: "PostWithDefaultScope", foreign_key: :author_id + end + + author = klass.first + # PRECONDITION: make sure ordering results in different results + assert_not_equal author.post, author.reorderd_post + + preloaded_reorderd_post = klass.preload(:reorderd_post).first.reorderd_post + + assert_equal author.reorderd_post, preloaded_reorderd_post + assert_equal Post.order(title: :desc).first.title, preloaded_reorderd_post.title + end + def test_preloading_polymorphic_with_custom_foreign_type sponsor = sponsors(:moustache_club_sponsor_for_groucho) groucho = members(:groucho) @@ -1197,12 +1221,6 @@ class EagerAssociationTest < ActiveRecord::TestCase end end - def test_join_eager_with_nil_order_should_generate_valid_sql - assert_nothing_raised(ActiveRecord::StatementInvalid) do - Post.includes(:comments).order(nil).where(:comments => {:body => "Thank you for the welcome"}).first - end - end - def test_deep_including_through_habtm # warm up habtm cache posts = Post.all.merge!(:includes => {:categories => :categorizations}, :order => "posts.id").to_a @@ -1214,6 +1232,16 @@ class EagerAssociationTest < ActiveRecord::TestCase assert_no_queries { assert_equal 2, posts[1].categories[0].categorizations.length } end + def test_eager_load_multiple_associations_with_references + mentor = Mentor.create!(name: "Barış Can DAYLIK") + developer = Developer.create!(name: "Mehmet Emin İNAÇ", mentor: mentor) + Contract.create!(developer: developer) + project = Project.create!(name: "VNGRS", mentor: mentor) + project.developers << developer + projects = Project.references(:mentors).includes(mentor: { developers: :contracts }, developers: :contracts) + assert_equal projects.last.mentor.developers.first.contracts, projects.last.developers.last.contracts + end + test "scoping with a circular preload" do assert_equal Comment.find(1), Comment.preload(:post => :comments).scoping { Comment.find(1) } end @@ -1325,6 +1353,14 @@ class EagerAssociationTest < ActiveRecord::TestCase assert_match message, error.message end + test "preload with invalid argument" do + exception = assert_raises(ArgumentError) do + Author.preload(10).to_a + end + assert_equal('10 was not recognized for preload', exception.message) + end + + test "preloading readonly association" do # has-one firm = Firm.where(id: "1").preload(:readonly_account).first! @@ -1366,4 +1402,10 @@ class EagerAssociationTest < ActiveRecord::TestCase post = Post.eager_load(:tags).where('tags.name = ?', 'General').first assert_equal posts(:welcome), post end + + # CollectionProxy#reader is expensive, so the preloader avoids calling it. + test "preloading has_many_through association avoids calling association.reader" do + ActiveRecord::Associations::HasManyAssociation.any_instance.expects(:reader).never + Author.preload(:readonly_comments).first! + end end |