everydayrails2章のセットアップがうまくいきません。(Could not find shared context "project setup")

前提・実現したいこと

Cloud9を使用して、『Everyday Rails - RSpecによるRailsテスト入門』の環境構築をしたいと思っています。ただ、書籍と同じような手順を行っても、エラーが出てしまい、困っています。

以下、手順
1　everydayrailsのコードをクローン
2　bundle install
3　bin/rails db:create:allでデータベース作成
4　bun/rspecでテスト←ここでエラーが出る

発生している問題・エラーメッセージ

ec2-user:~/environment/everydayrails-rspec-2017 (master) $ bin/rspec
/home/ec2-user/.rvm/gems/ruby-2.6.3/bundler/gems/shoulda-matchers-4b160bd19ecc/lib/shoulda/matchers/active_model/validate_inclusion_of_matcher.rb:273: warning: BigDecimal.new is deprecated; use BigDecimal() method instead.
Running via Spring preloader in process 15131
/home/ec2-user/.rvm/gems/ruby-2.6.3/bundler/gems/shoulda-matchers-4b160bd19ecc/lib/shoulda/matchers/active_model/validate_inclusion_of_matcher.rb:273: warning: BigDecimal.new is deprecated; use BigDecimal() method instead.

An error occurred while loading ./spec/controllers/tasks_controller_spec.rb.
Failure/Error: include_context "project setup"

ArgumentError:
  Could not find shared context "project setup"
# ./spec/controllers/tasks_controller_spec.rb:4:in `block in <top (required)>'
# ./spec/controllers/tasks_controller_spec.rb:3:in `<top (required)>'
# /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-commands-rspec-1.0.4/lib/spring/commands/rspec.rb:18:in `call'
# -e:1:in `<main>'

Finished in 0.00038 seconds (files took 3.23 seconds to load)
0 examples, 0 failures, 1 error occurred outside of examples

該当のソースコード

Gemfile
1source 'https://rubygems.org'
2
3git_source(:github) do |repo_name|
4  repo_name = "#{repo_name}/#{repo_name}" unless repo_name.include?("/")
5  "https://github.com/#{repo_name}.git"
6end
7
8gem 'rails', '~> 5.1.1'
9gem 'sqlite3'
10gem 'puma', '~> 3.7'
11gem 'sass-rails', '~> 5.0'
12gem 'uglifier', '>= 1.3.0'
13gem 'coffee-rails', '~> 4.2'
14gem 'turbolinks', '~> 5'
15gem 'jbuilder', '~> 2.5'
16
17group :development, :test do
18  gem 'rspec-rails', '~> 3.8.0'
19  gem 'factory_bot_rails', '~> 4.10.0'
20  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
21end
22
23group :development do
24  gem 'web-console', '>= 3.3.0'
25  gem 'listen', '>= 3.0.5', '< 3.2'
26  gem 'spring'
27  gem 'spring-watcher-listen', '~> 2.0.0'
28  gem 'faker', require: false # for sample data in development
29  gem 'spring-commands-rspec'
30end
31
32group :test do
33  gem 'capybara', '~> 2.15.4'
34  gem 'selenium-webdriver'
35  gem 'chromedriver-helper'
36  # Or use poltergeist and PhantomJS as an alternative to Selenium/Chrome
37  # gem 'poltergeist', '~> 1.15.0'
38  gem 'launchy', '~> 2.4.3'
39  gem 'shoulda-matchers',
40    git: 'https://github.com/thoughtbot/shoulda-matchers.git',
41    branch: 'rails-5'
42  gem 'vcr'
43  gem 'webmock'
44end
45
46gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
47
48gem 'bootstrap-sass'
49gem 'jquery-rails'
50gem 'devise'
51gem 'paperclip'
52gem 'geocoder'
53

require 'rails_helper'

RSpec.describe TasksController, type: :controller do
  include_context "project setup"

  describe "#show" do
    it "responds with JSON formatted output" do
      sign_in user
      get :show, format: :json,
        params: { project_id: project.id, id: task.id }
      expect(response).to have_content_type :json
    end
  end

  describe "#create" do
    it "responds with JSON formatted output" do
      new_task = { name: "New test task" }
      sign_in user
      post :create, format: :json,
        params: { project_id: project.id, task: new_task }
      expect(response).to have_content_type :json
    end

    it "adds a new task to the project" do
      new_task = { name: "New test task" }
      sign_in user
      expect {
        post :create, format: :json,
          params: { project_id: project.id, task: new_task }
      }.to change(project.tasks, :count).by(1)
    end

    it "requires authentication" do
      new_task = { name: "New test task" }
      # Don't sign in this time ...
      expect {
        post :create, format: :json,
          params: { project_id: project.id, task: new_task }
      }.to_not change(project.tasks, :count)
      expect(response).to_not be_success
    end
  end
end