This document contains a Gemfile specifying dependencies for a Rails 3.0.7 application using SQLite3 for the database. It includes RSpec-Rails for testing in the development and test groups. The document also includes an RSpec example test for creating a new Book object and verifying that the Book count increases.

18. source 'http://rubygems.org'
gem 'rails', '3.0.7'
# Bundle edge Rails instead:
# gem 'rails', :git => 'git://github.com/rails/rails.git'
gem 'sqlite3'
group :development, :test do
gem 'rspec-rails'
end

19. $ bundle install

23. describe Book do
describe :create do
it "Book " do
Book.count.should == 0
Book.create({ title: "RBC ", description: " ", read: false})
Book.count.should == 1
end
end