Guardfile

group :test do
  guard :test do
    watch(%r{^lib/(.+)\.rb$})     { |m| "test/#{m[1]}_test.rb" }
    watch(%r{^test/.+_test\.rb$})
    watch('test/test_helper.rb')  { "test" }

    watch(%r{^app/models/(.+)\.rb$})                   { |m| "test/unit/#{m[1]}_test.rb" }
    watch(%r{^app/controllers/(.+)\.rb$})              { |m| "test/functional/#{m[1]}_test.rb" }
    watch(%r{^app/views/.+\.rb$})                      { "test/integration" }
    watch('app/controllers/application_controller.rb') { ["test/functional", "test/integration"] }
  end
end

group :run do
  guard 'process', :name => 'Rails', :command => 'bundle exec rails s', :stop_signal => "KILL"  do
    watch('Gemfile.lock')
  end
end