Rspec: Testing registarion routing in rails with devise - ruby-on-rails

Question

I'm Trying to build a simple Blog using rails 4 and For authentication I'm using Devise.
The blog is simple and it will only have one registered user which is the admin. so the registration page should be available when there are no users in the database else it will redirect to the home page.
I'm trying to learn testing in the process. So I started testing the RegistrationContrroler However it doesn't seem to pass.
class RegistrationsController < Devise::RegistrationsController
before_action :one_user_registered?, only: [:new, :create]
protected
def one_user_registered?
if ((User.count == 1) & (user_signed_in?))
redirect_to root_path
elsif User.count == 1
redirect_to new_user_session_path
end
end
end
Specs:
RSpec.describe RegistrationsController, type: :controller do
context "Admin already registred" do
it "cannot create new user" do
#user_attr = FactoryGirl.attributes_for(:user)
# Create Admin
User.create!(#user_attr)
#request.env["devise.mapping"] = Devise.mappings[:user]
post :create, user: #user_attr
User.count should eq_to(1)
end
end
end
spec/factories.rb :
FactoryGirl.define do
factory :user do
sequence(:email) { |n| "user#{n}#example.com" }
password "secure"
end
factory :post do
sequence(:id){ |n| n }
sequence(:title) { |n| "Post title #{n}" }
body "Post body"
sequence(:slug) { |n| "Post title #{n}" }
end
end
routes.rb
Rails.application.routes.draw do
devise_for :users, controllers: { registrations: "registrations" }
authenticated :user do
resources :posts
end
unauthenticated :user do
resources :posts, only: [:show, :index]
end
root 'posts#index'
end
Stacktrace :
F
Failures:
1) RegistrationsController Admin already registred cannot create new user
Failure/Error: User.count should eq_to(1)
expected: 1
got: #<RegistrationsController:0x00000003a413b8 #_action_has_layout=true, #_routes=nil, #_headers={"Conten...enticatable]>, #req touest_format=:html, #marked_for_same_origin_verification=false, #current_user=nil>
(compared using ==)
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-support-3.5.0/lib/rspec/support.rb:87:in `block in <module:Support>'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-support-3.5.0/lib/rspec/support.rb:96:in `notify_failure'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-expectations-3.5.0/lib/rspec/expectations/fail_with.rb:27:in `fail_with'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-expectations-3.5.0/lib/rspec/expectations/handler.rb:38:in `handle_failure'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-expectations-3.5.0/lib/rspec/expectations/handler.rb:50:in `block in handle_matcher'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-expectations-3.5.0/lib/rspec/expectations/handler.rb:27:in `with_matcher'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-expectations-3.5.0/lib/rspec/expectations/handler.rb:48:in `handle_matcher'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/memoized_helpers.rb:81:in `should'
# ./spec/controllers/registrations_controller_spec.rb:13:in `block (3 levels) in <top (required)>'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/example.rb:252:in `instance_exec'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/example.rb:252:in `block in run'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/example.rb:494:in `block in with_around_and_singleton_context_hooks'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/example.rb:451:in `block in with_around_example_hooks'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/hooks.rb:471:in `block in run'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/hooks.rb:611:in `block in run_around_example_hooks_for'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/example.rb:336:in `call'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-rails-3.5.1/lib/rspec/rails/example/controller_example_group.rb:191:in `block (2 levels) in <module:ControllerExampleGroup>'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/example.rb:441:in `instance_exec'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/example.rb:441:in `instance_exec'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/hooks.rb:382:in `execute_with'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/hooks.rb:613:in `block (2 levels) in run_around_example_hooks_for'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/example.rb:336:in `call'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-rails-3.5.1/lib/rspec/rails/adapters.rb:127:in `block (2 levels) in <module:MinitestLifecycleAdapter>'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/example.rb:441:in `instance_exec'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/example.rb:441:in `instance_exec'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/hooks.rb:382:in `execute_with'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/hooks.rb:613:in `block (2 levels) in run_around_example_hooks_for'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/example.rb:336:in `call'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/hooks.rb:614:in `run_around_example_hooks_for'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/hooks.rb:471:in `run'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/example.rb:451:in `with_around_example_hooks'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/example.rb:494:in `with_around_and_singleton_context_hooks'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/example.rb:249:in `run'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/example_group.rb:627:in `block in run_examples'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/example_group.rb:623:in `map'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/example_group.rb:623:in `run_examples'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/example_group.rb:589:in `run'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/example_group.rb:590:in `block in run'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/example_group.rb:590:in `map'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/example_group.rb:590:in `run'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/runner.rb:113:in `block (3 levels) in run_specs'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/runner.rb:113:in `map'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/runner.rb:113:in `block (2 levels) in run_specs'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/configuration.rb:1836:in `with_suite_hooks'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/runner.rb:112:in `block in run_specs'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/reporter.rb:77:in `report'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/runner.rb:111:in `run_specs'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/runner.rb:87:in `run'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/runner.rb:71:in `run'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/lib/rspec/core/runner.rb:45:in `invoke'
# /home/chaker/.rvm/gems/ruby-2.3.1/gems/rspec-core-3.5.1/exe/rspec:4:in `<top (required)>'
# /home/chaker/.rvm/gems/ruby-2.3.1/bin/rspec:23:in `load'
# /home/chaker/.rvm/gems/ruby-2.3.1/bin/rspec:23:in `<main>'
# /home/chaker/.rvm/gems/ruby-2.3.1/bin/ruby_executable_hooks:15:in `eval'
# /home/chaker/.rvm/gems/ruby-2.3.1/bin/ruby_executable_hooks:15:in `<main>'
Finished in 0.08188 seconds (files took 1.95 seconds to load)
1 example, 1 failure
Failed examples:
rspec ./spec/controllers/registrations_controller_spec.rb:7 # RegistrationsController Admin already registred cannot create new user

Answer 1

You're missing a dot!
User.count.should eq_to(1)
Adding a should method is the way rspec patches all objects to support the should comparisons.
Preferable would be...
expect(User.count).to eq(1)
The error showed that the should by itself was received by the RegistrationsController, not by the User.count... and of course the RegistrationsController doesn't equal 1.