```ruby
require "simplemvc/version"

module Simplemvc
  class Application
    def call(env)
      # env["PATH_INFO"] = "/pages/about" => "PagesController.send(:about)"
      controller_class, action = get_controller_and_action(env)
      response = controller_class.new.send(action)

      [ 200, { "Content-Type" => "text/html" }, [ response ] ]
    end

    def get_controller_and_action(env)
      _, controller_name, action = env["PATH_INFO"].split("/")
      controller_name = controller_name.capitalize + "Controller"
      [ Object.const_get(controller_name), action ]
    end
  end
end
```

Implement root redirect and favicon path base case
user
```ruby
require "simplemvc/version"

module Simplemvc
  class Application
    def call(env)
      return [ 302, { "Location" => "/pages/about" }, [] ] if env["PATH_INFO"] == "/"
      return [ 500, {}, []] if env["PATH_INFO"] == "/favicon.ico"
      # env["PATH_INFO"] = "/pages/about" => "PagesController.send(:about)"
      controller_class, action = get_controller_and_action(env)
      response = controller_class.new.send(action)

      [ 200, { "Content-Type" => "text/html" }, [ response ] ]
    end

    def get_controller_and_action(env)
      _, controller_name, action = env["PATH_INFO"].split("/")
      controller_name = controller_name.capitalize + "Controller"
      [ Object.const_get(controller_name), action ]
    end
  end
end
```
assistant