Making TDD [Somewhat] Bearable on OpenStack

1. Hart Hoover Making Test-Driven Development [Somewhat] Bearable on OpenStack @hhoover #rackstackatl

2. #rackstackatl RACKSPACE VISION To be recognized as   one of the world’s great   service companies.

3. #rackstackatl WELL TESTED = GOOD SERVICE

4. #rackstackatl TEST-DRIVEN DEVELOPMENT (TRADITIONAL) Test-driven development is a software development process that relies on the repetition of a very short development cycle. First the developer writes an (initially failing) automated test case that defines a desired improvement or new function, then produces the minimum amount of code to pass that test, then finally refactors the new code to acceptable standards.

5. #rackstackatl PLAN CODE BUILD TEST RELEASE DEPLOY OPS THIS IS NOT TDD THIS IS NOT “DEVOPS”

6. #rackstackatl PLAN CODE BUILD TEST RELEASE DEPLOY OPS TEST THAT’S A BIT BETTER (STILL NOT “DEVOPS”)

7. #rackstackatl TESTING IS A GOOD IDEA FIND MISTAKES BEFORE THEY HAPPEN

8. #rackstackatl TESTING IS A GOOD IDEA YOUR TEAM WON’T HATE YOU

9. #rackstackatl TESTING IS A GOOD IDEA YOUR CUSTOMERS WON’T HATE YOU

10. #rackstackatl THE PROBLEM…

11. #rackstackatl Object Placeholder HERO CULTURE

12. #rackstackatl LAZINESS OR ARROGANCE “I just want to write code, not tests.” “My code works when I push it.” “It works on my machine.” “QA does the tests.”

13. #rackstackatl LEADERSHIP PRESSURE

14. #rackstackatl TIME IS MONEY DEV TIME IS A LOT OF MONEY &

15. #rackstackatl ONE SOLUTION: BE THE CHANGE YOU WANT TO SEE IN THE WORLD

16. #rackstackatl ANOTHER SOLUTION: CONTINUOUS TESTING

17. #rackstackatl TOOLS OF THE TRADE…

18. #rackstackatl http://hart.io

19. #rackstackatl

20. #rackstackatl

21. #rackstackatl

22. #rackstackatl DEPLOY A CHEF SERVER WITH HEAT https://github.com/rackspace-orchestration-templates/chef-server

23. #rackstackatl CHEF DEVELOPMENT KIT http://www.getchef.com/downloads/chef-dk/

24. #rackstackatl chef CHEF DEVELOPMENT KIT: CLI TOOLS knife chef-‐client Chef Zero Ohai

25. #rackstackatl CHEF DEVELOPMENT KIT

26. #rackstackatl CHEF DEVELOPMENT KIT - BERKSHELF source ‘https://api.berkshelf.com' metadata ! cookbook ‘apt’, ‘~> 2.0’ cookbook ‘minitest-‐handler’ cookbook ‘yum’, ‘~> 2.0’ cookbook ‘build-‐essential’, github: ‘opscode-‐cookbooks/build-‐essential’ cookbook ‘mysql_test’, :path => ‘test/cookbooks/mysql_test’

31. #rackstackatl kitchen.ci/docs/guide CHEF DEVELOPMENT KIT Test Kitchen

32. #rackstackatl -‐-‐-‐ provisioner: name: chef_solo ! platforms: -‐ name: ubuntu-‐14.04 ! driver: name: rackspace rackspace_region: IAD server_name: rackspace-‐ubuntu1404 image_id: bb02b1a3-‐bc77-‐4d17-‐ab5b-‐421d89850fca flavor_id: performance1-‐1 require_chef_omnibus: latest ! suites: -‐ name: default run_list: recipe[cookbook::default] attributes:

37. #rackstackatl CHEF DEVELOPMENT KIT

38. #rackstackatl CHEF DEVELOPMENT KIT ChefSpec • Built on RSpec • Converges a Chef run in memory • Overrides all providers to take no action • Mock Ohai data with Fauxhai

39. #rackstackatl CHEF DEVELOPMENT KIT: CHEFSPEC https://github.com/sethvargo/chefspec/tree/master/examples

40. #rackstackatl CHEF DEVELOPMENT KIT: CHEFSPEC require 'chefspec' ! describe 'apt_package::install' do let(:chef_run) { ChefSpec::Runner.new.converge(described_recipe) } ! it 'installs a apt_package with the default action' do expect(chef_run).to install_apt_package('default_action') expect(chef_run).to_not install_apt_package('not_default_action') end end

43. #rackstackatl HONORABLE MENTIONS

44. #rackstackatl SERVERSPEC • Built on RSpec • Uses SSH to test your servers’ state

45. #rackstackatl SERVERSPEC 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

46. #rackstackatl meez https://github.com/paulczar/meez

47. #rackstackatl RUBOCOP: STYLE RUBY STYLE GUIDE • code layout • strings • syntax • regex • more

48. #rackstackatl GUARD: TEST WHILE YOU WORK

49. #rackstackatl

50. #rackstackatl source 'https://rubygems.org' ! gem 'berkshelf' gem 'chef' gem 'meez' gem 'guard' gem 'guard-‐kitchen' gem 'rubocop' gem 'foodcritic' gem 'chefspec' gem 'test-‐kitchen' gem 'kitchen-‐rackspace' gem 'kitchen-‐openstack'

51. #rackstackatl GET TO THE OPENSTACK STUFF

52. #rackstackatl source 'https://rubygems.org' ! gem 'berkshelf' gem 'chef' gem 'meez' gem 'guard' gem 'guard-‐kitchen' gem 'rubocop' gem 'foodcritic' gem 'chefspec' gem 'test-‐kitchen' gem 'kitchen-‐rackspace' gem 'kitchen-‐openstack'

53. #rackstackatl DEMO TIME!

54. #rackstackatl54

55. #rackstackatl55

56. #rackstackatl 162.242.253.111 LET’S PLAY ON THE CLOUD

57. #rackstackatl WE’RE HIRING http://rackertalent.com

58. #rackstackatl RACKSPACE® HOSTING | 5000 WALZEM ROAD | SAN ANTONIO, TX 78218 US SALES: 1-800-961-2888 | US SUPPORT: 1-800-961-4454 | WWW.RACKSPACE.COM RACKSPACE® HOSTING | © RACKSPACE US, INC. | RACKSPACE® AND FANATICAL SUPPORT® ARE SERVICE MARKS OF RACKSPACE US, INC. REGISTERED IN THE UNITED STATES AND OTHER COUNTRIES. | WWW.RACKSPACE.COMRACKSPACE® HOSTING | © RACKSPACE US, INC. | RACKSPACE® AND FANATICAL SUPPORT® ARE SERVICE MARKS OF RACKSPACE US, INC. REGISTERED IN THE UNITED STATES AND OTHER COUNTRIES. | WWW.RACKSPACE.COM Hart Hoover @hhoover

Making TDD [Somewhat] Bearable on OpenStack

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