適当にテストしたいとき,rails consoleで以下のように試せる
> r = Qiita::Application.routes
> r.recognize_path '/items'
=> {:action=>"index", :controller=>"items"}
> r.recognize_path '/items', method: :post
=> {:action=>"create", :controller=>"items"}
また確認は http://localhost:3000/rails/info/routes にアクセスすると良い
via View your Routes without waiting on Rake by schneems · Pull Request #6461 · rails/rails