ruby on rails - custom route via POST -

i'm using rails 4.0

in routes.rb have code

get "test/index" 

it works fine. when add custom route like:

post "test/some_controller_action" 

and send file via curl

curl -x post -h "content-type: application/json" -d @result.json http://localhost:3000/test/some_controller_action 

i error

started post "/test/some_controller_action" 127.0.0.1 @ 2013-07-15 14:28:11 +0700 actioncontroller::routingerror (no route matches [post] "/test/some_controller_action"):   actionpack (4.0.0) lib/action_dispatch/middleware/debug_exceptions.rb:21:in `call'   actionpack (4.0.0) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'   railties (4.0.0) lib/rails/rack/logger.rb:38:in `call_app'   railties (4.0.0) lib/rails/rack/logger.rb:21:in `block in call'   activesupport (4.0.0) lib/active_support/tagged_logging.rb:67:in `block in tagged'   activesupport (4.0.0) lib/active_support/tagged_logging.rb:25:in `tagged'   activesupport (4.0.0) lib/active_support/tagged_logging.rb:67:in `tagged'   railties (4.0.0) lib/rails/rack/logger.rb:21:in `call'   actionpack (4.0.0) lib/action_dispatch/middleware/request_id.rb:21:in `call'   rack (1.5.2) lib/rack/methodoverride.rb:21:in `call'   rack (1.5.2) lib/rack/runtime.rb:17:in `call'   activesupport (4.0.0) lib/active_support/cache/strategy/local_cache.rb:83:in `call'   rack (1.5.2) lib/rack/lock.rb:17:in `call'   actionpack (4.0.0) lib/action_dispatch/middleware/static.rb:64:in `call'   railties (4.0.0) lib/rails/engine.rb:511:in `call'   railties (4.0.0) lib/rails/application.rb:97:in `call'   rack (1.5.2) lib/rack/lock.rb:17:in `call'   rack (1.5.2) lib/rack/content_length.rb:14:in `call'   rack (1.5.2) lib/rack/handler/webrick.rb:60:in `service' 

rake routes:

prefix verb uri pattern                   controller#action test_index  /test/index(.:format)      test#index test_some_controller_action post /test/some_controller_action(.:format) test#some_controller_action 

what wrong route?

try adding routes , see routes running rake routes

 match '/test/some_controller_action' => 'test#some_controller_action', :via => :post, :as => :some_controller_action