2 files changed, 10 insertions, 2 deletions
diff --git a/activerecord/test/cases/scoping/named_scoping_test.rb b/activerecord/test/cases/scoping/named_scoping_test.rb
index ea71a5ce28..03f8a4f7c9 100644
--- a/activerecord/test/cases/scoping/named_scoping_test.rb
+++ b/activerecord/test/cases/scoping/named_scoping_test.rb
@@ -303,6 +303,13 @@ class NamedScopingTest < ActiveRecord::TestCase
     assert_equal "lifo", topic.author_name
   end
 
+  def test_deprecated_delegating_private_method
+    assert_deprecated do
+      scope = Topic.all.by_private_lifo
+      assert_not scope.instance_variable_get(:@delegate_to_klass)
+    end
+  end
+
   def test_reserved_scope_names
     klass = Class.new(ActiveRecord::Base) do
       self.table_name = "topics"
diff --git a/activerecord/test/models/topic.rb b/activerecord/test/models/topic.rb
index a924cf86ae..fa50eeb6a4 100644
--- a/activerecord/test/models/topic.rb
+++ b/activerecord/test/models/topic.rb
@@ -12,12 +12,13 @@ class Topic < ActiveRecord::Base
 
   scope :scope_with_lambda, lambda { all }
 
-  scope :by_lifo, -> { where(author_name: author_name) }
+  scope :by_private_lifo, -> { where(author_name: private_lifo) }
+  scope :by_lifo, -> { where(author_name: "lifo") }
   scope :replied, -> { where "replies_count > 0" }
 
   class << self
     private
-      def author_name
+      def private_lifo
         "lifo"
       end
   end