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, 7 insertions, 0 deletions

diff --git a/actionpack/test/dispatch/routing_test.rb b/actionpack/test/dispatch/routing_test.rb
index 46d16598f7..6ecf011694 100644
--- a/actionpack/test/dispatch/routing_test.rb
+++ b/actionpack/test/dispatch/routing_test.rb
@@ -515,6 +515,8 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
         match '/sculptors', :to => 'italians#sculptors'
         match '/painters/:painter', :to => 'italians#painters', :constraints => {:painter => /michelangelo/}
       end
+
+      get 'search' => 'search'
     end
   end
 
@@ -2477,6 +2479,11 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
     assert_equal "/posts/1/admin", post_admin_root_path(:post_id => '1')
   end
 
+  def test_action_from_path_is_not_frozen
+    get '/search'
+    assert !@request.params[:action].frozen?
+  end
+
 private
   def with_test_routes
     yield