2 files changed, 24 insertions, 2 deletions
diff --git a/actionpack/test/abstract/helper_test.rb b/actionpack/test/abstract/helper_test.rb
index 73941222dc..b28a5b5afb 100644
--- a/actionpack/test/abstract/helper_test.rb
+++ b/actionpack/test/abstract/helper_test.rb
@@ -38,6 +38,10 @@ module AbstractController
       end
     end
 
+    class ::HelperyTestController < AbstractHelpers
+      clear_helpers
+    end
+
     class AbstractHelpersBlock < ControllerWithHelpers
       helper do
         include ::AbstractController::Testing::HelperyTest
@@ -45,7 +49,6 @@ module AbstractController
     end
 
     class TestHelpers < ActiveSupport::TestCase
-
       def setup
         @controller = AbstractHelpers.new
       end
@@ -74,8 +77,22 @@ module AbstractController
         @controller.process(:with_module)
         assert_equal "Module Included", @controller.response_body
       end
-
     end
 
+    class ClearHelpersTest < ActiveSupport::TestCase
+      def setup
+        @controller = HelperyTestController.new
+      end
+
+      def test_clears_up_previous_helpers
+        @controller.process(:with_symbol)
+        assert_equal "I respond to bare_a: false", @controller.response_body
+      end
+
+      def test_includes_controller_default_helper
+        @controller.process(:with_block)
+        assert_equal "Hello Default", @controller.response_body
+      end
+    end
   end
 end
diff --git a/actionpack/test/fixtures/helpers/helpery_test_helper.rb b/actionpack/test/fixtures/helpers/helpery_test_helper.rb
new file mode 100644
index 0000000000..a4f2951efa
--- /dev/null
+++ b/actionpack/test/fixtures/helpers/helpery_test_helper.rb
@@ -0,0 +1,5 @@
+module HelperyTestHelper
+  def helpery_test
+    "Default"
+  end
+end