Example Guardfile with annotate, cucumber, minitest and auto-migrate test database

Guardfile

guard 'annotate', notify: false do
  watch( 'db/schema.rb' )
end

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

guard 'minitest', drb: false do
  watch(%r{app/(.+)/(.+)\.rb})                  { |m| "test/#{m[1]}/#{m[2]}_test.rb" }
  watch(%r{test/(.+)/(.+)_test\.rb})
  watch(%r{test/test_helper.rb})                { "test" }
end

guard 'shell' do
  watch('db/schema.rb') { `rake test:prepare` }
end