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-rw-r--r--activerecord/test/cases/associations/has_many_through_associations_test.rb5
1 files changed, 5 insertions, 0 deletions
diff --git a/activerecord/test/cases/associations/has_many_through_associations_test.rb b/activerecord/test/cases/associations/has_many_through_associations_test.rb
index b703c96ec1..2f4dd9e55c 100644
--- a/activerecord/test/cases/associations/has_many_through_associations_test.rb
+++ b/activerecord/test/cases/associations/has_many_through_associations_test.rb
@@ -825,4 +825,9 @@ class HasManyThroughAssociationsTest < ActiveRecord::TestCase
def test_explicitly_joining_join_table
assert_equal owners(:blackbeard).toys, owners(:blackbeard).toys.with_pet
end
+
+ def test_has_many_through_with_polymorphic_source
+ post = tags(:general).tagged_posts.create! :title => "foo", :body => "bar"
+ assert_equal [tags(:general)], post.reload.tags
+ end
end