Duplicate possible frozen string from route

Ruby 1.9 freezes Hash string keys by default so where a route is
defined like this:

  get 'search' => 'search'

then the Mapper will derive the action from the key. This blows up
later when the action is added to the parameters hash and the
encoding is forced.

Closes #3429

1 files changed, 9 insertions, 0 deletions

diff --git a/actionpack/test/dispatch/routing_test.rb b/actionpack/test/dispatch/routing_test.rb
index da7474e73c..9f31ce8127 100644
--- a/actionpack/test/dispatch/routing_test.rb
+++ b/actionpack/test/dispatch/routing_test.rb
@@ -2678,6 +2678,15 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
     assert_equal '0c0c0b68-d24b-11e1-a861-001ff3fffe6f', @request.params[:download]
   end
 
+  def test_action_from_path_is_not_frozen
+    draw do
+      get 'search' => 'search'
+    end
+
+    get '/search'
+    assert !@request.params[:action].frozen?
+  end
+
 private
 
   def draw(&block)