Fix for “`require’: cannot load such file” Error

While working through Chapter 3 of the RailsTutorial for Rails 4.0, I encountered an error when running the first integration test using RSpec.

Upon running the command:

bundle exec rspec spec/requests/static_pages_spec.rb

for the first time, I got the following error:

/Users/davidyoung/.rvm/gems/ruby-2.0.0-p451@railstutorial_rails_4_0/gems/selenium-webdriver-2.0.0/lib/selenium/webdriver/common/zipper.rb:1:in `require': cannot load such file -- zip/zip (LoadError)
	from /Users/davidyoung/.rvm/gems/ruby-2.0.0-p451@railstutorial_rails_4_0/gems/selenium-webdriver-2.0.0/lib/selenium/webdriver/common/zipper.rb:1:in `<top (required)>'
	from /Users/davidyoung/.rvm/gems/ruby-2.0.0-p451@railstutorial_rails_4_0/gems/selenium-webdriver-2.0.0/lib/selenium/webdriver/common.rb:9:in `require'
.
.
.

It appears this is caused by a bug in version 2.0.0 of the ‘selenium-webdriver’ gem. If you change the Gemfile line to use a newer version, this error goes away.

Gemfile:

source 'https://rubygems.org'
ruby '2.0.0'
#ruby-gemset=railstutorial_rails_4_0

gem 'rails', '4.0.0'

group :development, :test do
	gem 'sqlite3', '1.3.7'
	gem 'rspec-rails', '2.13.1'
end

group :test do
	gem 'selenium-webdriver', '~> 2.35.1'
	gem 'capybara', '2.1.0'
end

	
gem 'sass-rails', '~> 4.0.0'
gem 'uglifier', '2.1.1'
gem 'coffee-rails', '~> 4.0.0'
gem 'jquery-rails', '2.2.1'
gem 'turbolinks', '1.1.1'
gem 'jbuilder', '1.0.2'

group :doc do
  gem 'sdoc', '0.3.20', require: false
end 

group :production do
	gem 'pg', '0.15.1'
	gem 'rails_12factor', '0.0.2'
end

Now when the command is run, I get the proper output:

F

Failures:

  1) Static pages Home page should have the content 'Sample App'
     Failure/Error: expect(page).to have_content('Sample App')
       expected #has_content?("Sample App") to return true, got false
     # ./spec/requests/static_pages_spec.rb:7:in `block (3 levels) in <top (required)>'

Finished in 0.86025 seconds
1 example, 1 failure

Failed examples:

rspec ./spec/requests/static_pages_spec.rb:5 # Static pages Home page should have the content 'Sample App'

Randomized with seed 48261