api routing

api_routing_spec.rb

require 'spec_helper'

describe Api do
  describe "routing" do
    it "routes to entry point" do
      ['1','v1'].each do |version_spec|
        get("api/#{version_spec}").should route_to 'api/v1/entry_point#index'
      end
    end
  end
end

output from spec runner

1) Api routing routes to entry point
     Failure/Error: get("api/#{version_spec}.json/").should route_to 'api/v1/entry_point#index'
       No route matches "/api/v1.json"
     # ./spec/routing/api_routing_spec.rb:7:in `block (4 levels) in <top (required)>'
     # ./spec/routing/api_routing_spec.rb:6:in `each'
     # ./spec/routing/api_routing_spec.rb:6:in `block (3 levels) in <top (required)>'


---------------------------

  1) Api routing routes to entry point
     Failure/Error: get("api/#{version_spec}").should route_to 'api/v1/entry_point#index'
       The recognized options <{"format"=>"json",
        "controller"=>"api/v1/entry_point",
        "action"=>"index",
        "version"=>"1"}> did not match <{"controller"=>"api/v1/entry_point", "action"=>"index"}>, difference: <{"format"=>"json", "version"=>"1"}>.
       <{"controller"=>"api/v1/entry_point", "action"=>"index"}> expected but was
       <{"format"=>"json",
        "controller"=>"api/v1/entry_point",
        "action"=>"index",
        "version"=>"1"}>.
     # ./spec/routing/api_routing_spec.rb:7:in `block (4 levels) in <top (required)>'
     # ./spec/routing/api_routing_spec.rb:6:in `each'
     # ./spec/routing/api_routing_spec.rb:6:in `block (3 levels) in <top (required)>'

output of rake routes

 api_entry_point GET    /api/:version(.:format)                         api/api/v1/entry_point#index {:version=>/(v?1)/, :format=>"json"}

routes.rb

  namespace :api do
    api version: 1, allow_prefix: 'v' do
      get "/", to:'v1/entry_point#index', as: :entry_point
    end
  end