diff options
Diffstat (limited to 'activerecord/test/cases/associations')
| -rw-r--r-- | activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb b/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb index 20af436e02..e9f679e6de 100644 --- a/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb +++ b/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb @@ -957,4 +957,23 @@ class HasAndBelongsToManyAssociationsTest < ActiveRecord::TestCase projects = ProjectUnscopingDavidDefaultScope.includes(:developers).where(id: project.id) assert_equal 1, projects.first.developers.size end + + def test_preloaded_associations_size + assert_equal Project.first.salaried_developers.size, + Project.preload(:salaried_developers).first.salaried_developers.size + + assert_equal Project.includes(:salaried_developers).references(:salaried_developers).first.salaried_developers.size, + Project.preload(:salaried_developers).first.salaried_developers.size + + # Nested HATBM + first_project = Developer.first.projects.first + preloaded_first_project = + Developer.preload(projects: :salaried_developers). + first. + projects. + detect { |p| p.id == first_project.id } + + assert preloaded_first_project.salaried_developers.loaded?, true + assert_equal first_project.salaried_developers.size, preloaded_first_project.salaried_developers.size + end end |