1 files changed, 15 insertions, 0 deletions
diff --git a/actionpack/test/controller/mime/respond_with_test.rb b/actionpack/test/controller/mime/respond_with_test.rb
index 76af9e3414..a70592fa1b 100644
--- a/actionpack/test/controller/mime/respond_with_test.rb
+++ b/actionpack/test/controller/mime/respond_with_test.rb
@@ -65,7 +65,17 @@ class RespondWithController < ActionController::Base
     respond_with(resource, :responder => responder)
   end
 
+  def respond_with_additional_params
+    @params = RespondWithController.params
+    respond_with({:result => resource}, @params)
+  end
+
 protected
+  def self.params
+    {
+        :foo => 'bar'
+    }
+  end
 
   def resource
     Customer.new("david", request.delete? ? nil : 13)
@@ -145,6 +155,11 @@ class RespondWithControllerTest < ActionController::TestCase
     Mime::Type.unregister(:mobile)
   end
 
+  def test_respond_with_shouldnt_modify_original_hash
+    get :respond_with_additional_params
+    assert_equal RespondWithController.params, assigns(:params)
+  end
+
   def test_using_resource
     @request.accept = "application/xml"
     get :using_resource