RSpec：ActionController :: UrlGenerationError：用于自定义网址

Question

经历了其他类似问题，但问题仍未解决。

测试：

expect{
   post message_direct_create_path(friend.id), params: {message_direct: 
   FactoryBot.attributes_for(:message_direct, user_id: user.id, 
                             friend_id: friend.id)}
}.to change{MessageDirect.count}.by(1)

路线：

post '/message_directs/:friend_id', to: 'message_directs#create', as: 'message_direct_create'

错误：

ActionController::UrlGenerationError:
    No route matches {:action=>"/message_directs/1", 
:controller=>"message_directs", :message_direct=>{:text=>"Sends 
Message", :user_id=>1, :friend_id=>1}}

我也尝试过 :create和"/message_directs/#{friend.id}"，但错误仍然相同