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-rw-r--r--activerecord/test/cases/associations/has_many_associations_test.rb6
1 files changed, 5 insertions, 1 deletions
diff --git a/activerecord/test/cases/associations/has_many_associations_test.rb b/activerecord/test/cases/associations/has_many_associations_test.rb
index 545bc77fed..6c54c2f1cd 100644
--- a/activerecord/test/cases/associations/has_many_associations_test.rb
+++ b/activerecord/test/cases/associations/has_many_associations_test.rb
@@ -2932,8 +2932,12 @@ class HasManyAssociationsTest < ActiveRecord::TestCase
assert_equal [], reference.ideal_jobs
end
- private
+ def test_has_many_preloading_with_duplicate_records
+ posts = Post.joins(:comments).preload(:comments).to_a
+ assert_equal [1, 2], posts.first.comments.map(&:id)
+ end
+ private
def force_signal37_to_load_all_clients_of_firm
companies(:first_firm).clients_of_firm.load_target
end