1 files changed, 9 insertions, 0 deletions
diff --git a/activerecord/test/cases/associations/belongs_to_associations_test.rb b/activerecord/test/cases/associations/belongs_to_associations_test.rb
index 4190f6d76d..818902beb5 100644
--- a/activerecord/test/cases/associations/belongs_to_associations_test.rb
+++ b/activerecord/test/cases/associations/belongs_to_associations_test.rb
@@ -681,4 +681,13 @@ class BelongsToAssociationsTest < ActiveRecord::TestCase
     firm = client.create_firm! :name => "baa"
     assert_equal firm.id, client.client_of
   end
+
+  def test_self_referential_belongs_to_with_counter_cache_assigning_nil
+    comment = Comment.create! :post => posts(:thinking), :body => "fuu"
+    comment.parent = nil
+    comment.save!
+
+    assert_equal nil, comment.reload.parent
+    assert_equal 0, comments(:greetings).reload.children_count
+  end
 end