Guard

Guard 使用視頻
http://railscasts.com/episodes/264-guard

Guard列表
https://github.com/guard/guard/wiki/List-of-available-Guards

# bash
bundle
guard init rspec
guard init livereload
guard

# Gemfile
group :development, :test do
  # ...
  gem 'rb-fsevent', :require => false if RUBY_PLATFORM =~ /darwin/i
  gem 'guard-rspec'
  gem 'guard-livereload'
end

# Guardfile
guard 'livereload' do
  watch(%r{app/.+\.(erb|haml)})
  watch(%r{app/helpers/.+\.rb})
  watch(%r{public/.+\.(css|js|html)})
  watch(%r{config/locales/.+\.yml})
end

guard 'rspec', :version => 2 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('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/controllers/(.+)_(controller)\.rb})  { |m| ["spec/routing/#{m[1]}_routing_spec.rb", "spec/#{m[2]}s/#{m[1]}_#{m[2]}_spec.rb", "spec/requests/#{m[1]}_spec.rb"] }
  watch(%r{^app/views/(.+)/})                        { |m| "spec/requests/#{m[1]}_spec.rb" }
end

# guard-sass
監聽 sass 文件並轉換成 css 文件

# guard-coffeescript
監聽 coffeescript 文件並轉換成 js 文件

# guard-rspec
自動跑 rspec test

# guard-livereload
配合瀏覽器的輔助工具，做到無需手動刷新頁面即可看到 html/css/js 的修改變化，瀏覽器需要安裝配套插件。

# guard-zeus
自動接管 zeus

# guard-puma
puma 是目前流行的 web 服務器，這個擴展可以監聽配置變化從而自動重啓服務器。