Declare a `POST /notes` route

This commit resolves the previous error:

Error:
UserSharesAMessageTest#test_visiting_the_index:
ActionController::RoutingError: No route matches [POST] "/notes"

By declaring a post route with "/notes" as the path, controller: "notes“, and action: "create", we configure our router to route requests to the notes#create action.

When we run the test again, it raises a new error:

Error:
UserSharesAMessageTest#test_visiting_the_index:
AbstractController::ActionNotFound: The action 'create' could not be found for NotesController


      config/routes.rb

diff --git a/config/routes.rb b/config/routes.rb
index 136a40a..1d005be 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,6 +1,7 @@
 Rails.application.routes.draw do
   # For details on the DSL available within this file, see https://guides.rubyonrails.org/routing.html
   get "/notes/new", controller: "notes", action: "new"
+  post "/notes", controller: "notes", action: "create"
 
   get "/", controller: "notes", action: "index"
 end

Declare a POST /notes route

Declare a `POST /notes` route