#264 Guard

May 02, 2011 | 8 minutes | Testing, Tools

Guard watches files and runs a command after a file is modified. This allows you to automatically run tests in the background, restart your development server, reload the browser, and more.

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          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