Our Guardfile

Guardfile

guard 'spork', :rspec_env => { 'RAILS_ENV' => 'test' }, :wait => 60, :notify_on_start => true do
  watch('config/application.rb')
  watch('config/environment.rb')
  watch(%r{^config/environments/.+\.rb$})
  watch(%r{^config/initializers/.+\.rb$})
  watch('Gemfile')
  watch('Gemfile.lock')
  watch('spec/spec_helper.rb') { :rspec }
  watch(%r{^spec/support/(requests|controllers|mailers|models)_helpers\.rb}) { :rspec }
  watch(%r{^spec/acceptance/support/(.*)\.rb}) { :rspec }
  watch('config/routes.rb') { :rspec }
  watch('test/test_helper.rb') { :test_unit }
end

guard :rspec, :version => 2, :cli => "--color --drb -r rspec/instafail -f RSpec::Instafail", :bundler => false, :all_after_pass => false, :all_on_start => false, :keep_failed => false do
  watch('spec/spec_helper.rb')                        { "spec" }
  #watch('config/routes.rb')                           { "spec/routing" }
  #watch('app/controllers/application_controller.rb')  { "spec/controllers" }
  watch(%r{^spec/.+_spec\.rb$})
  watch(%r{^app/(.+)\.rb$})                           { |m| "spec/#{m[1]}_spec.rb" }
  watch(%r{^lib/(.+)\.rb$})                           { |m| "spec/lib/#{m[1]}_spec.rb" }
  watch(%r{^app/(.*)(\.erb|\.haml)$})                 { |m| ["spec/acceptance/#{m[1]}_spec.rb", "spec/acceptance/#{m[1]}s_spec.rb"] }
  watch(%r{^app/controllers/(.+)_(controller)\.rb$})  { |m| ["spec/acceptance/#{m[1]}_spec.rb", "spec/acceptance/#{m[1]}s_spec.rb"] }
  watch(%r{^spec/support/(requests|controllers|mailers|models)_helpers\.rb}) { |m| "spec/#{m[1]}" }
end