diff options
Diffstat (limited to 'activerecord/test/cases')
-rw-r--r-- | activerecord/test/cases/associations/inverse_associations_test.rb | 25 |
1 files changed, 25 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..c8cad84013 100644 --- a/activerecord/test/cases/associations/inverse_associations_test.rb +++ b/activerecord/test/cases/associations/inverse_associations_test.rb @@ -278,6 +278,31 @@ 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_trying_to_use_inverses_that_dont_exist_should_raise_an_error assert_raise(ActiveRecord::InverseOfAssociationNotFoundError) { Man.first.secret_interests } end |