Rspec testing in rails3 - ruby-on-rails-3

Question

I have a Queues controller and and QueueItems controller in my rails
application. In routes I have defined as below
match 'queues/:queue_id/next', :to=> 'queueitems#next'
In my QueueItems Controller I have a next action and it assigns an
instance variable.
def next
#queue = "Regular"
#other stuffs related to regular
end
How do I test this in Rspec. I am pretty very new to Rspec. Please help.
I tried like the below
describe QueuesController do
describe "next " do
it "routes /queues/:queue_id/next" do
{ :get => "/queues/regular_queue/next" }.should route_to(
:controller => "queue_items",
:action => "next",
:queue_id => "regular_queue",
:format => "json"
)
assigns(:queue).should_not be_nil
expect(response).to be_success
end
end
But it is not at all coming inside my next action in controller.
Update #2
spec/controllers/queue_items_controller_spec.rb
require 'spec_helper'
describe QueueItemsController do
describe 'GET next' do
it 'assigns #queue' do
get :next, format: :json
expect(assigns[:queue]).to eq('regular')
end
end
end
queue_items_controller.rb
def next
puts "Inside next action..."
#queue = "regular"
end
routes.rb
get '/queues/:queue_id/next', :to => 'queue_items#next', :format=>'json'
rake routes
GET /queues/:queue_id/next(.:format) queue_items#next {:format=>"json"}
/queues/:queue_id/delete(.:format) queue_items#delete {:method=>:delete, :format=>"json"}
/queues/:queue_id/clear(.:format) queue_items#clear {:format=>"json"}

Answer 1

First of all change match to get or post - it is better to use exactly verb. Let's say it is get.
Action next is in QueueItemsController so test should be in this queue_items_controller_spec.rb file (and in folder spec/controlers).
and test might be similar to
describe QueueItemsController do
describe "GET next " do
it "responses json" do
get :next, format: :json
expect(response).to be_success
end
it "does not response html" do
get :next, format: :html
expect(response).not_to be_success # or define more exactly response
end
it 'assigns #queue' do
get :next, format: :json
expect(assigns[:queue]).to eq('Regular')
end
end
end
if you would like to test your routes you should follow this articles:
https://www.relishapp.com/rspec/rspec-rails/v/2-14/docs/routing-specs
https://www.relishapp.com/rspec/rspec-rails/docs/routing-specs/route-to-matcher