RSpec, Devise - Could not find valid mapping error - ruby-on-rails-4

Question

I have a Devise User model and in my application I have different roles which I am specifying through an enum in my User model. When I am running the tests for the admin role, I am receiving the following error when running RSpec tests with Devise. I have tried some of the other answers to similar issues but nothing seems to be working. I hope you can point me in the right direction. Thanks!
RuntimeError:
Could not find a valid mapping for {:email=>"collin_cain#torpdoyle.info", :password=>"12345678", :password_confirmation=>"12345678", :role=>2}
Here is the User model:
class User < ActiveRecord::Base
# Include default devise modules. Others available are:
# :confirmable, :lockable, :timeoutable and :omniauthable
devise :database_authenticatable, :registerable,
:recoverable, :rememberable, :trackable, :validatable
has_many :comments
enum role: [:member, :moderator, :admin]
before_save :set_default_role
def set_default_role
self.role ||= 0
end
end
The user factory:
FactoryGirl.define do
factory :user do
email { Faker::Internet.email }
password "12345678"
password_confirmation "12345678"
role 0
end
end
The categories controller spec
require 'rails_helper'
RSpec.describe Admin::CategoriesController, type: :controller do
it 'should redirect to sign in path for non signed users' do
get :index
expect(response).to redirect_to(new_user_session_path)
end
it 'should redirect to root path for non admin users' do
user = create(:user)
sign_in user
get :index
expect(response).to redirect_to(root_path)
end
describe 'GET #index' do
context 'when admin signed in' do
it 'renders the index template' do
admin = attributes_for(:user, role: 2)
sign_in admin
get :index
expect(response).to render_template(:index)
end
it 'assigns a list of categories' do
admin = attributes_for(:user, role: 2)
sign_in admin
category = create(:category)
expect(assigns(:categories)).to eq([category])
end
end
end
end
and the routes file
Rails.application.routes.draw do
devise_for :users
namespace :admin do
get '', to: 'dashboard#index', as: '/'
resources :categories
end
resources :topics do
resources :comments, only: :create
end
resources :categories do
resources :topics
end
root 'categories#index'
end
I am also adding the User schema
create_table "users", force: :cascade do |t|
t.string "email", default: "", null: false
t.string "encrypted_password", default: "", null: false
t.string "reset_password_token"
t.datetime "reset_password_sent_at"
t.datetime "remember_created_at"
t.integer "sign_in_count", default: 0, null: false
t.datetime "current_sign_in_at"
t.datetime "last_sign_in_at"
t.inet "current_sign_in_ip"
t.inet "last_sign_in_ip"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.integer "role"
t.string "image"
end
UPDATE:
I have updated the admin categories controller spec, specifically Devise's sign_in method from sign_in user to sign_in(:admin, user) as shown below.
describe 'GET #index' do
context 'when admin signed in' do
it 'renders the index template' do
user = create(:user)
user.role = 2
sign_in(:admin, user)
get :index
expect(response).to render_template(:index)
end
...
Now I am getting the following error
1) Admin::CategoriesController GET #index when admin signed in renders the index template
Failure/Error: expect(response).to render_template(:index)
expecting <"index"> but was a redirect to <http://test.host/users/sign_in>
For some reason the admin is not being signed in, I have included Devise Test Helpers in rails_helper.rb file, unfortunately the error continues. Any help will be greatly appreciated.

Answer 1

Have you declared the role in the migration like
t.integer :role
As this would need to be in there to be included in the migration created structure.
If not
Add the line, in your database drop the table and run your rake again

Answer 2

I was able to troubleshoot my own question and decided to post the answer in hope that it will help someone in the future.
Instead of setting the user role to admin in the the admin_categories_controller_spec file, instead I added a nested Factory inside the Users Factory.
FactoryGirl.define do
factory :user do
email { Faker::Internet.email }
password "12345678"
password_confirmation "12345678"
role 0
factory :admin do
role 2
end
end
end
and the test ends up like this:
describe 'GET #index' do
context 'when admin signed in' do
it 'renders the index template' do
admin = create(:admin)
sign_in admin
get :index
expect(response).to render_template(:index)
end
it 'assigns a list of categories' do
admin = create(:admin)
sign_in admin
category = create(:category)
get :index
expect(assigns(:categories)).to eq([category])
end
end
end