dashboard_controller_spec.rb

require 'rails_helper'

RSpec.describe DashboardController, type: :controller do

  describe "Dashboard" do
    
    before do
      sign_in_as_a_valid_user
    end

    describe "GET /dashboard/index" do

      it "Gives the expected status code." do
        get dashboard_index_path
        response.status.should be(200)
      end

      #it "Should contain Cirrus 2.0 in the masthead." do
        #get dashboard_index_path
        #response.body.should have_xpath('//*[@id="wrapper"]/nav/div[1]/a[contains(., "Cirrus 2.0")]')
      #end

      #it "Should should have the user's email address in a drop-down link." do
        #get dashboard_index_path
        #response.body.should have_xpath("//*[@id='wrapper']/nav/ul/li/a[contains(., '#{user.email}')]")
      #end

    end

  end

end

devise_support.rb

module ValidUserHelper
  def signed_in_as_a_valid_user
    @user ||= FactoryGirl.create :user
    sign_in @user
  end
end

module ValidUserRequestHelper
  def sign_in_as_a_valid_user
    @user ||= FactoryGirl.create :user
    post user_session_path, 'user[email]' => @user.email, 'user[password]' => @user.password
  end
end

RSpec.configure do |config|
  config.include ValidUserHelper
  config.include ValidUserRequestHelper
end

routes.rb

Rails.application.routes.draw do

  get 'dashboard/index'

  devise_for :users, skip: :registrations
  devise_scope :user do
    resource :registration,
      only: [:new, :create, :edit, :update],
      path: 'users',
      path_names: { new: 'sign_up' },
      controller: 'devise/registrations',
      as: :user_registration do
        get :cancel
    end    
  end

  namespace :api, :path => "", :constraints => { :subdomain => "api" }, :defaults => { :format => :json } do
    namespace :v1 do
      get '/echo/:message', to: 'status#echo'
    end
  end

  root "dashboard#index"

end

rspec-output

╭─max@hedgehog  ~/dev/cirrus-v2-api ‹ruby-2.1.5› ‹feature/user-model*›
╰─$ rspec
Run options: include {:focus=>true}

All examples were filtered out; ignoring {:focus=>true}

Randomized with seed 35411
F

Failures:

  1) DashboardController Dashboard GET /dashboard/index Gives the expected status code.
     Failure/Error: sign_in_as_a_valid_user
     ActionController::UrlGenerationError:
       No route matches {:action=>"/users/sign_in", :controller=>"dashboard", :"user[email]"=>"john.doe@example.co.uk", :"user[password]"=>"P@ssw0rd1!"}
     # /Users/max/.rvm/gems/ruby-2.1.5/gems/actionpack-4.1.8/lib/action_dispatch/journey/formatter.rb:39:in `generate'
     # /Users/max/.rvm/gems/ruby-2.1.5/gems/actionpack-4.1.8/lib/action_dispatch/routing/route_set.rb:599:in `generate'
     # /Users/max/.rvm/gems/ruby-2.1.5/gems/actionpack-4.1.8/lib/action_dispatch/routing/route_set.rb:629:in `generate'
     # /Users/max/.rvm/gems/ruby-2.1.5/gems/actionpack-4.1.8/lib/action_dispatch/routing/route_set.rb:624:in `generate_extras'
     # /Users/max/.rvm/gems/ruby-2.1.5/gems/actionpack-4.1.8/lib/action_dispatch/routing/route_set.rb:620:in `extra_keys'
     # /Users/max/.rvm/gems/ruby-2.1.5/gems/actionpack-4.1.8/lib/action_controller/test_case.rb:189:in `assign_parameters'
     # /Users/max/.rvm/gems/ruby-2.1.5/gems/actionpack-4.1.8/lib/action_controller/test_case.rb:582:in `process'
     # /Users/max/.rvm/gems/ruby-2.1.5/gems/actionpack-4.1.8/lib/action_controller/test_case.rb:64:in `process'
     # /Users/max/.rvm/gems/ruby-2.1.5/gems/actionpack-4.1.8/lib/action_controller/test_case.rb:501:in `post'
     # ./spec/support/devise_support.rb:11:in `sign_in_as_a_valid_user'
     # ./spec/controllers/dashboard_controller_spec.rb:8:in `block (3 levels) in <top (required)>'

Top 1 slowest examples (0.03485 seconds, 53.0% of total time):
  DashboardController Dashboard GET /dashboard/index Gives the expected status code.
    0.03485 seconds ./spec/controllers/dashboard_controller_spec.rb:13

Finished in 0.06579 seconds (files took 1.42 seconds to load)
1 example, 1 failure

Failed examples:

rspec ./spec/controllers/dashboard_controller_spec.rb:13 # DashboardController Dashboard GET /dashboard/index Gives the expected status code.

Randomized with seed 35411

show-routes

[7] pry(main)> show-routes
                  Prefix Verb   URI Pattern                    Controller#Action
         dashboard_index GET    /dashboard/index(.:format)     dashboard#index
        new_user_session GET    /users/sign_in(.:format)       devise/sessions#new
            user_session POST   /users/sign_in(.:format)       devise/sessions#create
    destroy_user_session DELETE /users/sign_out(.:format)      devise/sessions#destroy
           user_password POST   /users/password(.:format)      devise/passwords#create
       new_user_password GET    /users/password/new(.:format)  devise/passwords#new
      edit_user_password GET    /users/password/edit(.:format) devise/passwords#edit
                         PATCH  /users/password(.:format)      devise/passwords#update
                         PUT    /users/password(.:format)      devise/passwords#update
cancel_user_registration GET    /users/cancel(.:format)        devise/registrations#cancel
       user_registration POST   /users(.:format)               devise/registrations#create
   new_user_registration GET    /users/sign_up(.:format)       devise/registrations#new
  edit_user_registration GET    /users/edit(.:format)          devise/registrations#edit
                         PATCH  /users(.:format)               devise/registrations#update
                         PUT    /users(.:format)               devise/registrations#update
                  api_v1 GET    /v1/echo/:message(.:format)    api/v1/status#echo {:format=>:json, :subdomain=>"api"}
                    root GET    /