How can I test faye rack server with rspec?

I have Faye-Rails integrated into my Rails Apps. And I want to ensure the default methods I built in the controller are available and behaves as expected when the rails app is running.

I've added the initializer to the application.rb:

config.middleware.delete Rack::Lock
config.middleware.use FayeRails::Middleware, mount: '/names, :timeout => 25 do
  map '/client/*' => ClientWebsocketController
  map default: :block
end

And I've created a controller to handle the requests:

require 'faye'
require 'json'

class ClientWebsocketController < FayeRails::Controller

  channel '/client/*' do

    monitor :subscribe do
      puts "Client #{client_id} subscribed to #{channel}."
    end
end

I've tryed testing with Rack::Test as per this answer:

How can I test Rack middleware?

I've tryed to replicate Faye-Rails test:

http://ift.tt/1FKiqq9

And did some research around in google:

http://ift.tt/1NIQ6ya

But none of this worked for me. I've been researching around this script which seems to do the job perfect. But I'm unable to extract the call sequence:

http://ift.tt/1FKiqqi

Any help or clue will be greatly appreciated.