3 files changed, 18 insertions, 0 deletions
diff --git a/actionpack/test/controller/helper_test.rb b/actionpack/test/controller/helper_test.rb
index ad66f138eb..4f8ff4140f 100644
--- a/actionpack/test/controller/helper_test.rb
+++ b/actionpack/test/controller/helper_test.rb
@@ -25,6 +25,13 @@ class AllHelpersController < ActionController::Base
   helper :all
 end
 
+class JustMeController < ActionController::Base
+  clear_helpers
+end
+
+class MeTooController < JustMeController
+end
+
 module LocalAbcHelper
   def a() end
   def b() end
@@ -92,6 +99,11 @@ class HelperTest < ActiveSupport::TestCase
     # assert_equal 'test: baz', Fun::PdfController.process(request, response).body
   end
 
+  def test_default_helpers_only
+    assert_equal [JustMeHelper], JustMeController._helpers.ancestors.reject(&:anonymous?)
+    assert_equal [MeTooHelper, JustMeHelper], MeTooController._helpers.ancestors.reject(&:anonymous?)
+  end
+
   def test_all_helpers
     methods = AllHelpersController._helpers.instance_methods.map {|m| m.to_s}
 
diff --git a/actionpack/test/fixtures/helpers/just_me_helper.rb b/actionpack/test/fixtures/helpers/just_me_helper.rb
new file mode 100644
index 0000000000..b140a7b9b4
--- /dev/null
+++ b/actionpack/test/fixtures/helpers/just_me_helper.rb
@@ -0,0 +1,3 @@
+module JustMeHelper
+  def me() "mine!" end
+end
+\ No newline at end of file
diff --git a/actionpack/test/fixtures/helpers/me_too_helper.rb b/actionpack/test/fixtures/helpers/me_too_helper.rb
new file mode 100644
index 0000000000..ce56042143
--- /dev/null
+++ b/actionpack/test/fixtures/helpers/me_too_helper.rb
@@ -0,0 +1,3 @@
+module MeTooHelper
+  def me() "me too!" end
+end
+\ No newline at end of file