diff options
Diffstat (limited to 'activerecord/test/cases/associations/inverse_associations_test.rb')
-rw-r--r-- | activerecord/test/cases/associations/inverse_associations_test.rb | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/activerecord/test/cases/associations/inverse_associations_test.rb b/activerecord/test/cases/associations/inverse_associations_test.rb index 8c9b4fb921..60df4e14dd 100644 --- a/activerecord/test/cases/associations/inverse_associations_test.rb +++ b/activerecord/test/cases/associations/inverse_associations_test.rb @@ -5,6 +5,113 @@ require 'models/interest' require 'models/zine' require 'models/club' require 'models/sponsor' +require 'models/rating' +require 'models/comment' +require 'models/car' +require 'models/bulb' +require 'models/mixed_case_monkey' + +class AutomaticInverseFindingTests < ActiveRecord::TestCase + fixtures :ratings, :comments, :cars + + def test_has_one_and_belongs_to_should_find_inverse_automatically_on_multiple_word_name + monkey_reflection = MixedCaseMonkey.reflect_on_association(:man) + man_reflection = Man.reflect_on_association(:mixed_case_monkey) + + assert_respond_to monkey_reflection, :has_inverse? + assert monkey_reflection.has_inverse?, "The monkey reflection should have an inverse" + assert_equal man_reflection, monkey_reflection.inverse_of, "The monkey reflection's inverse should be the man reflection" + + assert_respond_to man_reflection, :has_inverse? + assert man_reflection.has_inverse?, "The man reflection should have an inverse" + assert_equal monkey_reflection, man_reflection.inverse_of, "The man reflection's inverse should be the monkey reflection" + end + + def test_has_one_and_belongs_to_should_find_inverse_automatically + car_reflection = Car.reflect_on_association(:bulb) + bulb_reflection = Bulb.reflect_on_association(:car) + + assert_respond_to car_reflection, :has_inverse? + assert car_reflection.has_inverse?, "The Car reflection should have an inverse" + assert_equal bulb_reflection, car_reflection.inverse_of, "The Car reflection's inverse should be the Bulb reflection" + + assert_respond_to bulb_reflection, :has_inverse? + assert bulb_reflection.has_inverse?, "The Bulb reflection should have an inverse" + assert_equal car_reflection, bulb_reflection.inverse_of, "The Bulb reflection's inverse should be the Car reflection" + end + + def test_has_many_and_belongs_to_should_find_inverse_automatically + comment_reflection = Comment.reflect_on_association(:ratings) + rating_reflection = Rating.reflect_on_association(:comment) + + assert_respond_to comment_reflection, :has_inverse? + assert comment_reflection.has_inverse?, "The Comment reflection should have an inverse" + assert_equal rating_reflection, comment_reflection.inverse_of, "The Comment reflection's inverse should be the Rating reflection" + end + + def test_has_one_and_belongs_to_automatic_inverse_shares_objects + car = Car.first + bulb = Bulb.create!(car: car) + + assert_equal car.bulb, bulb, "The Car's bulb should be the original bulb" + + car.bulb.color = "Blue" + assert_equal car.bulb.color, bulb.color, "Changing the bulb's color on the car association should change the bulb's color" + + bulb.color = "Red" + assert_equal bulb.color, car.bulb.color, "Changing the bulb's color should change the bulb's color on the car association" + end + + def test_has_many_and_belongs_to_automatic_inverse_shares_objects_on_rating + comment = Comment.first + rating = Rating.create!(comment: comment) + + assert_equal rating.comment, comment, "The Rating's comment should be the original Comment" + + rating.comment.body = "Brogramming is the act of programming, like a bro." + assert_equal rating.comment.body, comment.body, "Changing the Comment's body on the association should change the original Comment's body" + + comment.body = "Broseiden is the king of the sea of bros." + assert_equal comment.body, rating.comment.body, "Changing the original Comment's body should change the Comment's body on the association" + end + + def test_has_many_and_belongs_to_automatic_inverse_shares_objects_on_comment + rating = Rating.create! + comment = Comment.first + rating.comment = comment + + assert_equal rating.comment, comment, "The Rating's comment should be the original Comment" + + rating.comment.body = "Brogramming is the act of programming, like a bro." + assert_equal rating.comment.body, comment.body, "Changing the Comment's body on the association should change the original Comment's body" + + comment.body = "Broseiden is the king of the sea of bros." + assert_equal comment.body, rating.comment.body, "Changing the original Comment's body should change the Comment's body on the association" + end + + def test_polymorphic_and_has_many_through_relationships_should_not_have_inverses + sponsor_reflection = Sponsor.reflect_on_association(:sponsorable) + + assert_respond_to sponsor_reflection, :has_inverse? + assert !sponsor_reflection.has_inverse?, "A polymorphic association should not find an inverse automatically" + + club_reflection = Club.reflect_on_association(:members) + + assert_respond_to club_reflection, :has_inverse? + assert !club_reflection.has_inverse?, "A has_many_through association should not find an inverse automatically" + end + + def test_polymorphic_relationships_should_still_not_have_inverses_when_non_polymorphic_relationship_has_the_same_name + man_reflection = Man.reflect_on_association(:polymorphic_face_without_inverse) + face_reflection = Face.reflect_on_association(:man) + + assert_respond_to face_reflection, :has_inverse? + assert face_reflection.has_inverse?, "For this test, the non-polymorphic association must have an inverse" + + assert_respond_to man_reflection, :has_inverse? + assert !man_reflection.has_inverse?, "The target of a polymorphic association should not find an inverse automatically" + end +end class InverseAssociationTests < ActiveRecord::TestCase def test_should_allow_for_inverse_of_options_in_associations @@ -235,6 +342,22 @@ class InverseHasManyTests < ActiveRecord::TestCase assert_equal m.name, i.man.name, "Name of man should be the same after changes to newly-created-child-owned instance" end + def test_parent_instance_should_be_shared_within_create_block_of_new_child + man = Man.first + interest = man.interests.create do |i| + assert i.man.equal?(man), "Man of child should be the same instance as a parent" + end + assert interest.man.equal?(man), "Man of the child should still be the same instance as a parent" + end + + def test_parent_instance_should_be_shared_within_build_block_of_new_child + man = Man.first + interest = man.interests.build do |i| + assert i.man.equal?(man), "Man of child should be the same instance as a parent" + end + assert interest.man.equal?(man), "Man of the child should still be the same instance as a parent" + end + def test_parent_instance_should_be_shared_with_poked_in_child m = men(:gordon) i = Interest.create(:topic => 'Industrial Revolution Re-enactment') @@ -278,9 +401,75 @@ class InverseHasManyTests < ActiveRecord::TestCase assert interests[1].man.equal? man end + def test_parent_instance_should_find_child_instance_using_child_instance_id + man = Man.create! + interest = Interest.create! + man.interests = [interest] + + assert interest.equal?(man.interests.first), "The inverse association should use the interest already created and held in memory" + assert interest.equal?(man.interests.find(interest.id)), "The inverse association should use the interest already created and held in memory" + assert man.equal?(man.interests.first.man), "Two inversion should lead back to the same object that was originally held" + assert man.equal?(man.interests.find(interest.id).man), "Two inversions should lead back to the same object that was originally held" + end + + def test_parent_instance_should_find_child_instance_using_child_instance_id_when_created + man = Man.create! + interest = Interest.create!(man: man) + + assert man.equal?(man.interests.first.man), "Two inverses should lead back to the same object that was originally held" + assert man.equal?(man.interests.find(interest.id).man), "Two inversions should lead back to the same object that was originally held" + + assert_equal man.name, man.interests.find(interest.id).man.name, "The name of the man should match before the name is changed" + man.name = "Ben Bitdiddle" + assert_equal man.name, man.interests.find(interest.id).man.name, "The name of the man should match after the parent name is changed" + man.interests.find(interest.id).man.name = "Alyssa P. Hacker" + assert_equal man.name, man.interests.find(interest.id).man.name, "The name of the man should match after the child name is changed" + end + + def test_find_on_child_instance_with_id_should_not_load_all_child_records + man = Man.create! + interest = Interest.create!(man: man) + + man.interests.find(interest.id) + assert_not man.interests.loaded? + end + + def test_raise_record_not_found_error_when_invalid_ids_are_passed + # delete all interest records to ensure that hard coded invalid_id(s) + # are indeed invalid. + Interest.delete_all + + man = Man.create! + + invalid_id = 245324523 + assert_raise(ActiveRecord::RecordNotFound) { man.interests.find(invalid_id) } + + invalid_ids = [8432342, 2390102913, 2453245234523452] + assert_raise(ActiveRecord::RecordNotFound) { man.interests.find(invalid_ids) } + end + + def test_raise_record_not_found_error_when_no_ids_are_passed + man = Man.create! + + assert_raise(ActiveRecord::RecordNotFound) { man.interests.find() } + end + def test_trying_to_use_inverses_that_dont_exist_should_raise_an_error assert_raise(ActiveRecord::InverseOfAssociationNotFoundError) { Man.first.secret_interests } end + + def test_child_instance_should_point_to_parent_without_saving + man = Man.new + i = Interest.create(:topic => 'Industrial Revolution Re-enactment') + + man.interests << i + assert_not_nil i.man + + i.man.name = "Charles" + assert_equal i.man.name, man.name + + assert !man.persisted? + end end class InverseBelongsToTests < ActiveRecord::TestCase @@ -425,6 +614,18 @@ class InversePolymorphicBelongsToTests < ActiveRecord::TestCase assert_equal face.description, new_man.polymorphic_face.description, "Description of face should be the same after changes to replaced-parent-owned instance" end + def test_inversed_instance_should_not_be_reloaded_after_stale_state_changed + new_man = Man.new + face = Face.new + new_man.face = face + + old_inversed_man = face.man + new_man.save! + new_inversed_man = face.man + + assert_equal old_inversed_man.object_id, new_inversed_man.object_id + end + def test_should_not_try_to_set_inverse_instances_when_the_inverse_is_a_has_many i = interests(:llama_wrangling) m = i.polymorphic_man |