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-rw-r--r--activerecord/test/associations_join_model_test.rb8
1 files changed, 8 insertions, 0 deletions
diff --git a/activerecord/test/associations_join_model_test.rb b/activerecord/test/associations_join_model_test.rb
index f7ca3d6a84..a2f42f060e 100644
--- a/activerecord/test/associations_join_model_test.rb
+++ b/activerecord/test/associations_join_model_test.rb
@@ -104,4 +104,12 @@ class AssociationsJoinModelTest < Test::Unit::TestCase
assert_equal [], posts(:thinking).authors
assert_equal [authors(:mary)], posts(:authorless).authors
end
+
+ def test_belongs_to_polymorphic_with_counter_cache
+ assert_equal 0, posts(:welcome)[:taggings_count]
+ tagging = posts(:welcome).taggings.create(:tag => tags(:general))
+ assert_equal 1, posts(:welcome, :reload)[:taggings_count]
+ tagging.destroy
+ assert posts(:welcome, :reload)[:taggings_count].zero?
+ end
end