1 files changed, 9 insertions, 1 deletions
diff --git a/activerecord/test/associations_join_model_test.rb b/activerecord/test/associations_join_model_test.rb
index 2d74895664..58208ced65 100644
--- a/activerecord/test/associations_join_model_test.rb
+++ b/activerecord/test/associations_join_model_test.rb
@@ -38,7 +38,15 @@ class AssociationsJoinModelTest < Test::Unit::TestCase
   def test_polymorphic_has_many_going_through_join_model
     assert_equal tags(:general), posts(:welcome).tags.first
   end
-  
+
+  def test_polymorphic_has_many_create_model_with_inheritance_and_custom_base_class
+    post = SubStiPost.create :title => 'SubStiPost', :body => 'SubStiPost body'
+    assert_instance_of SubStiPost, post
+    
+    tagging = tags(:misc).taggings.create(:taggable => post)
+    assert_equal "SubStiPost", tagging.taggable_type
+  end
+
   def test_polymorphic_has_many_going_through_join_model_with_inheritance
     assert_equal tags(:general), posts(:thinking).tags.first
   end