Guardfile

guard 'rspec', :cmd => 'bundle exec rspec --tag ~slow --tag ~no_ci' 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$})                           { |m|
    "spec/#{m[1]}_spec.rb" }
  watch(%r{^app/(.*)(\.erb|\.haml|\.slim)$})          { |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' }
end

guard 'migrate', :run_on_start => true, :rails_env => :test,
  :test_clone => false, :reset => true do
  watch(%r{^db/migrate/(\d+).+\.rb})
end