Garrett Honeycutt gh@learnpuppet.com

learnpuppet.com @learnpuppet

Garrett Honeycutt gh@learnpuppet.com learnpuppet.com @learnpuppet

TDD?

Why Test?

DEVELOPERS! DEVELOPERS! DEVELOPERS! DEVELOPERS! DEVELOPERS! DEVELOPERS! DEVELOPERS! DEVELOPERS! DEVELOPERS! DEVELOPERS!

Why Test First?

What to Test?

Tooling

require 'spec_helper' !

describe package('httpd') do it { should be_installed } end !

describe service('httpd') do it { should be_enabled } it { should be_running } end !

describe port(80) do it { should be_listening } end

$ rake spec !

Package "httpd" should be installed !

Service "httpd" should be enabled should be running !

Port "80" should be listening !

4 examples, 0 failures

Monitoring

$ ping -c1 example.com PING example.com (93.184.216.119): 56 data bytes 64 bytes from 93.184.216.119: icmp_seq=0 ttl=58 time=4.947 ms !

--- example.com ping statistics --- 1 packets transmitted, 1 packets received, 0.0% packet loss round-trip min/avg/max/stddev = 4.947/4.947/4.947/0.000 ms

$ curl example.com -I HTTP/1.1 200 OK Accept-Ranges: bytes Cache-Control: max-age=604800 Content-Type: text/html Date: Thu, 13 Nov 2014 03:52:15 GMT Etag: "359670651" Expires: Thu, 20 Nov 2014 03:52:15 GMT Last-Modified: Fri, 09 Aug 2013 23:54:35 GMT Server: ECS (pae/3796) X-Cache: HIT x-ec-custom-error: 1 Content-Length: 1270

write tests (which fail)

just enough code to pass

refactor

Garrett Honeycutt gh@learnpuppet.com

learnpuppet.com @learnpuppet