Bring up rails test environment. Bootstrap test environment.

console

rails new app --skip-test-unit
#Or on existing app (be carefull)
#rm -r test/
rails generate cucumber:install
rails generate rspec:install
spork cucumber --bootstrap
spork rspec --bootstrap
vim features/support/env.rb
vim spec/spec_helper.rb
guard init #Check for spork goes first and add :cli => '--drb' for cucumber and rspec

Gemfile

group :test do
  gem 'rspec'
  gem 'cucumber', '1.2.5' #Version needed explicity for a bug at 23.05.13
  gem 'cucumber-rails', '1.3.0', require: false #Version needed explicity for a bug at 23.05.13
  gem 'capybara'
  gem 'spork'
  gem 'guard'
  gem 'guard-rspec'
  gem 'guard-spork'
  gem 'guard-cucumber'
  gem 'libnotify'
  gem 'rb-inotify', '~> 0.9'
  gem 'database_cleaner'
end

Guardfile

guard 'spork', :cucumber_env => { 'RAILS_ENV' => 'test' }, :rspec_env => { 'RAILS_ENV' => 'test' } do
  watch('config/application.rb')
  watch('config/environment.rb')
  watch('config/environments/test.rb')
  watch(%r{^config/initializers/.+\.rb$})
  watch('Gemfile')
  watch('Gemfile.lock')
  watch('spec/spec_helper.rb') { :rspec }
  watch('test/test_helper.rb') { :test_unit }
  watch(%r{features/support/}) { :cucumber }
end

guard 'cucumber', :cli => '--drb --format progress --no-profile' do
  watch(%r{^features/.+\.feature$})
  watch(%r{^features/support/.+$})          { 'features' }
  watch(%r{^features/step_definitions/(.+)_steps\.rb$}) { |m| Dir[File.join("**/#{m[1]}.feature")][0] || 'features' }
end

guard 'rspec', :all_after_pass => false, :cli => '--drb' do
  watch(%r{^spec/.+_spec\.rb$})
  watch(%r{^lib/(.+)\.rb$})     { |m| "spec/lib/#{m[1]}_spec.rb" }
  watch('spec/spec_helper.rb')  { "spec" }

  # Rails example
  watch(%r{^app/(.+)\.rb$})                           { |m| "spec/#{m[1]}_spec.rb" }
  watch(%r{^app/(.*)(\.erb|\.haml)$})                 { |m| "spec/#{m[1]}#{m[2]}_spec.rb" }
  watch(%r{^app/controllers/(.+)_(controller)\.rb$})  { |m| ["spec/routing/#{m[1]}_routing_spec.rb", "spec/#{m[2]}s/#{m[1]}_#{m[2]}_spec.rb", "spec/acceptance/#{m[1]}_spec.rb"] }
  watch(%r{^spec/support/(.+)\.rb$})                  { "spec" }
  watch('config/routes.rb')                           { "spec/routing" }
  watch('app/controllers/application_controller.rb')  { "spec/controllers" }

  # Capybara features specs
  watch(%r{^app/views/(.+)/.*\.(erb|haml)$})          { |m| "spec/features/#{m[1]}_spec.rb" }

  # Turnip features and steps
  watch(%r{^spec/acceptance/(.+)\.feature$})
  watch(%r{^spec/acceptance/steps/(.+)_steps\.rb$})   { |m| Dir[File.join("**/#{m[1]}.feature")][0] || 'spec/acceptance' }
end