Chef Cookbook Testing

A brief overview of how to test, what to test, and who to test with Chef.

Transcript

1. CHEF TESTING COOKBOOK
2. WANTED @ SETHVARGO EATING BACON AND TESTING ALL THE THINGS!
3. CHEF TESTING COOKBOOK
4. CHEF TESTING
5. CHEF TESTING
6. CHEF TESTING COOKBOOK
7. TESTING COOKBOOK
8. TESTING COOKBOOK
9. CHEF TESTING COOKBOOK
10. TESTING
11. TESTING ?
12. TESTING LINT
13. TESTING LINT semantic and best-practice coding standards for Chef cookbooks
14. TESTING LINT semantic and best-practice coding standards for Chef cookbooks Foodcritic https://github.com/acrmp/foodcritic
15. TESTING UNIT
16. TESTING UNIT universe-controlled, self-contained, singular test surrounding a particular function
17. TESTING UNIT universe-controlled, self-contained, singular test surrounding a particular function ChefSpec RSpec ServerSpec https://github.com/acrmp/chefspec https://github.com/mizzy/serverspec https://github.com/rspec/rspec
18. it 'writes cheese' do expect(chef_run).to create_file 'cheese.txt' end it 'installs apache2' do expect(chef_run).to install_package 'apache' end it 'starts bacon' do expect(chef_run).to start_service 'bacon' end
19. TESTING REGRESSION
20. TESTING REGRESSION a test, typically accompanying a bug fix, ensuring the fix is not reverted in the future
21. TESTING INTEGRATION
22. TESTING INTEGRATION high level, post-convergence test
23. TESTING INTEGRATION high level, post-convergence test Test Kitchen https://github.com/opscode/test-kitchen
24. TESTING ACCEPTANCE
25. TESTING ACCEPTANCE YOU
26. TESTING STRAIGHT UP
27. MOCKS it 'writes cheese' do expect(chef_run).to create_file 'cheese.txt' end object with a controlled response
28. MOCKS let(:aws) { double('aws') } before { AWS.stub(:initialize).and_return(aws) }
29. STUBS it 'writes cheese' do expect(chef_run).to create_file 'cheese.txt' end method with a canned response
30. STUBS before { AWS.stub(:connect).and_return(true) }
31. EXAMPLE search(:node, 'role:web') do |web_node| Chef::Log.warn web_node['ipaddress'] end it 'warns the IP Addresses' do Chef::Recipe.any_instance.stub(:search) .with(:node, 'role:web') .and_yield(Hashie::Mash.new(ipaddress: '1.2.3.4')) expect(chef_run).to warn('1.2.3.4') end
32. EXAMPLE it 'warns the IP Addresses' do Chef::Recipe.any_instance.stub(:search) .with(:node, 'role:web') .and_yield(JSON.parse(File.read('support/ips.json'))) expect(chef_run).to warn('1.2.3.4') end
33. EXAMPLE 2.0 data_bag_item(:users) do |user| Chef::Log.warn user['username'] end it 'warns the username' do Chef::Recipe.any_instance.stub(:data_bag_item) .with(:users) .and_return(Hashie::Mash.new(username: 'seth')) expect(chef_run).to warn('seth') end
34. EXAMPLE 2.0 it 'warns the username' do Chef::Recipe.any_instance.stub(:data_bag_item) .with(:users) .and_return(JSON.parse(File.read('support/users.json'))) expect(chef_run).to warn('seth') end
35. KITCHEN it 'writes cheese' do expect(chef_run).to create_file 'cheese.txt' end a place for cooking
36. KITCHEN it 'writes cheese' do expect(chef_run).to create_file 'cheese.txt' end a place for testing
37. driver_plugin: vagrant platforms: - name: ubuntu-12.04 driver_config: box: opscode-ubuntu-12.04 box_url: ... suites: - name: default run_list: - recipe[myface] KITCHEN
38. LEFT FOR THE VIEWERS EXERCISES https://github.com/opscode-cookbooks/java HAS IT ALL https://github.com/sethvargo-cookbooks/chef-zero SIMPLEST https://github.com/customink-webops/hostsfile COMPLEX
39. DO IT LIVE FUCK IT