Rspec view undefined method stub_model - ruby-on-rails

Question

i'm trying to find out what is wrong with this code. Namely it cannot find method 'stub_model'. Tried to look for solution for this but everywhere i look my files seems to be good. Please take a look on it maybe i just can't see a simple mistake. Thanks a lot :)
Book model is created in db.
My view spec (spec/view/books_spec.rb) looks like this:
require 'rails_helper'
describe 'books/new' do
it 'displays the book form' do
book = stub_model(Book)
assign(:book, book)
render
expect(rendered).to have_selector("form label[for *= 'Title']")
expect(rendered).to have_selector("form label[for *= 'Author']")
expect(rendered).to have_selector("form label[for *= 'Cover Photo']")
expect(rendered).to have_button "Add Book"
end
end
and the error is following:
1) books/new displays the book form
Failure/Error: book = stub_model(Book)
NoMethodError:
undefined method `stub_model' for #<RSpec::ExampleGroups::BooksNew:0x00000103e61870>
# ./spec/views/books_spec.rb:6:in `block (2 levels) in <top (required)>'
My rails_helper.rb looks like:
# This file is copied to spec/ when you run 'rails generate rspec:install'
ENV["RAILS_ENV"] ||= 'test'
require 'spec_helper'
require File.expand_path("../../config/environment", __FILE__)
require 'rspec/rails'
# Requires supporting ruby files with custom matchers and macros, etc, in
# spec/support/ and its subdirectories. Files matching `spec/**/*_spec.rb` are
# run as spec files by default. This means that files in spec/support that end
# in _spec.rb will both be required and run as specs, causing the specs to be
# run twice. It is recommended that you do not name files matching this glob to
# end with _spec.rb. You can configure this pattern with with the --pattern
# option on the command line or in ~/.rspec, .rspec or `.rspec-local`.
Dir[Rails.root.join("spec/support/**/*.rb")].each { |f| require f }
# Checks for pending migrations before tests are run.
# If you are not using ActiveRecord, you can remove this line.
ActiveRecord::Migration.maintain_test_schema!
RSpec.configure do |config|
# Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
config.fixture_path = "#{::Rails.root}/spec/fixtures"
# If you're not using ActiveRecord, or you'd prefer not to run each of your
# examples within a transaction, remove the following line or assign false
# instead of true.
config.use_transactional_fixtures = true
# RSpec Rails can automatically mix in different behaviours to your tests
# based on their file location, for example enabling you to call `get` and
# `post` in specs under `spec/controllers`.
#
# You can disable this behaviour by removing the line below, and instead
# explicitly tag your specs with their type, e.g.:
#
# RSpec.describe UsersController, :type => :controller do
# # ...
# end
#
# The different available types are documented in the features, such as in
# https://relishapp.com/rspec/rspec-rails/docs
config.infer_spec_type_from_file_location!
end
and my Gemfile.rb:
source 'https://rubygems.org'
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.1.2.rc1'
# Use postgresql as the database for Active Record
gem 'pg'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 4.0.3'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .js.coffee assets and views
gem 'coffee-rails', '~> 4.0.0'
# See https://github.com/sstephenson/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby
# Use jquery as the JavaScript library
gem 'jquery-rails'
# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.0'
# bundle exec rake doc:rails generates the API under doc/api.
gem 'sdoc', '~> 0.4.0', group: :doc
# Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
gem 'spring', group: :development
group :test do
gem 'cucumber-rails', :require => false
gem 'database_cleaner'
end
group :development, :test do
gem 'rspec-rails'
gem 'factory_girl_rails'
end
# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'
# Use unicorn as the app server
# gem 'unicorn'
# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development
# Use debugger
# gem 'debugger', group: [:development, :test]

Answer 1

What is your rspec-rails version?
According to the Changelog and this Commit mock_model and stub_model are removed since version 3.0.0 of rspec-rails.
rspec mocks are externalized in an another gem rspec-activemodel-mocks . You should include it in your Gemfile and try it.
Hope it helps

Answer 2

this should be a comment to ahnbizcad's comment, but I lack the reputation to do it properly.
It should be fixed by adding
require 'rspec/active_model/mocks'
to spec_helper.rb