Chef Cookbook Testing - Speaker Deck

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CHEF TESTING COOKBOOK

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WANTED @ SETHVARGO EATING BACON AND TESTING ALL THE THINGS!

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CHEF TESTING COOKBOOK

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CHEF TESTING

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CHEF TESTING

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CHEF TESTING COOKBOOK

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TESTING COOKBOOK

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TESTING COOKBOOK

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CHEF TESTING COOKBOOK

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TESTING

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TESTING ?

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TESTING LINT

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TESTING LINT semantic and best-practice coding standards for Chef cookbooks

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TESTING LINT semantic and best-practice coding standards for Chef cookbooks Foodcritic https://github.com/acrmp/foodcritic

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TESTING UNIT

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TESTING UNIT universe-controlled, self-contained, singular test surrounding a particular function

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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

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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

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TESTING REGRESSION

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TESTING REGRESSION a test, typically accompanying a bug fix, ensuring the fix is not reverted in the future

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TESTING INTEGRATION

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TESTING INTEGRATION high level, post-convergence test

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TESTING INTEGRATION high level, post-convergence test Test Kitchen https://github.com/opscode/test-kitchen

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TESTING ACCEPTANCE

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TESTING ACCEPTANCE YOU

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TESTING STRAIGHT UP

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MOCKS it 'writes cheese' do expect(chef_run).to create_file 'cheese.txt' end object with a controlled response

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MOCKS let(:aws) { double('aws') } before { AWS.stub(:initialize).and_return(aws) }

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STUBS it 'writes cheese' do expect(chef_run).to create_file 'cheese.txt' end method with a canned response

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STUBS before { AWS.stub(:connect).and_return(true) }

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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

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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

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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

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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

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KITCHEN it 'writes cheese' do expect(chef_run).to create_file 'cheese.txt' end a place for cooking

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KITCHEN it 'writes cheese' do expect(chef_run).to create_file 'cheese.txt' end a place for testing

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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

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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

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DO IT LIVE FUCK IT