Testing gems for Rails, Capybara, Poltergeist, Rspec

Gemfile

# http://soupmatt.com/fixing-bundlewithout-on-heroku-cedar
# Hack to make heroku work. Works b/c on heroku, the ENV['HOME'] will be 'app'
                # and this will then return test, which heroku knows to exclude
def hg(g)
  (ENV['HOME'].gsub('/', '') == 'app' ? 'test' : g)
end

group :test, hg(:ci) do
  gem 'simplecov', require: false
  gem 'database_cleaner'
  gem 'turn', require: false
  gem 'factory_girl_rails'
  gem 'launchy' # this lets us call save_and_open_page to see what's on a page for debugging capybara tests
  gem 'capybara'
  gem 'capybara-screenshot', github: 'parndt/capybara-screenshot', branch: 'fix-rspec-3-0-0-deprecation'
  gem 'show_me_the_cookies'
  gem 'rspec-instafail'
  gem 'shoulda-matchers'
  gem 'poltergeist'
  gem 'rspec-retry', github: 'justin808/rspec-retry', branch: 'justin808-rspec-299'
  gem 'resque_spec', github: 'justin808/resque_spec', branch: 'fix-for-resque-heroku'
  gem 'vcr'
  gem 'fakeweb'
  gem 'zeus', '~> 0.13.4.pre2'
end

group :test, :development do
  # http://railscasts.com/episodes/413-fast-tests
  gem 'rspec-rails', '~> 2.99.0.beta2'
  gem 'rspec', '>= 2.9.9.beta2'
  gem 'rspec-its', '~> 1.0.0'
  gem 'parallel_tests'
  gem 'zeus-parallel_tests'
  gem 'heroku_san', '~> 4.3.2'
end