TDDing tmux - Speaker Deck

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tmux TDDing

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? Ruby

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? Operations

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http://www.wikihow.com/Make-Friends

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How to apply the testing cookbooks to chef know in Ruby stuff you already because Chef is just Ruby and you already know Ruby, so strap in

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t f g sethvargo

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t f g sethvargo

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opscode.com/careers 8 FSF)JSJOH

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Let's talk about testing

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It all starts on git clone git://github.com/opscode/chef-repo.git

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github.com/opscode/chef-repo

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source 'https://rubygems.org' gem 'chef' gem 'chefspec' gem 'fauxhai' gem 'foodcritic' gem 'strainer' # Guard gem 'guard' gem 'guard-bundler' gem 'guard-rspec' gem 'rb-fsevent' gem 'terminal-notifier-guard' Gemfile

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Chef

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ChefSpec

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Fauxhai

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Foodcritic

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Strainer

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Guard

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1 Create Cookbook

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$ knife cookbook create tmux

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$ knife cookbook create tmux ** Creating cookbook tmux ** Creating README for cookbook: tmux ** Creating CHANGELOG for cookbook: tmux ** Creating metadata for cookbook: tmux

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maintainer 'everyone' maintainer_email 'everyone@mountainwest.conf' license 'apache2' description 'Installs and configures tmux' long_description # ... version '0.1.0' metadata.rb

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2 Write Specs

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require 'chefspec' spec/spec_helper.rb

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require 'spec_helper' describe 'tmux::default' do end spec/default_spec.rb

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require 'spec_helper' describe 'tmux::default' do let(:runner) { ChefSpec::ChefRunner.new.converge('tmux::default') } end spec/default_spec.rb

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require 'spec_helper' describe 'tmux::default' do let(:runner) { ChefSpec::ChefRunner.new.converge('tmux::default') } it 'installs the tmux package' do expect(runner).to install_package('tmux') end it 'creates the tmux.conf file' do expect(runner).to create_file('/etc/tmux.conf') end end spec/default_spec.rb

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Wat?

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Pour some sugar on me!

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Pour some sugar on me! color

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--color .rspec

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$ rspec cookbooks/tmux/spec/default_spec.rb

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$ rspec cookbooks/tmux/spec/default_spec.rb Failures: 1) tmux::default should install the tmux package Failure/Error: let(:runner) { ChefSpec::ChefRunner.new.converge('tmux::default') } TypeError: can't convert Symbol into Integer # ./cookbooks/bluepill/attributes/default.rb: 18:in `[]' # ./cookbooks/bluepill/attributes/default.rb: 18:in `from_file' # ./cookbooks/tmux/spec/default_spec.rb:4:in `block (2 levels) in ' # ./cookbooks/tmux/spec/default_spec.rb:7:in `block (2 levels) in ' 2) tmux::default should create the tmux.conf file Failure/Error: let(:runner) { ChefSpec::ChefRunner.new.converge('tmux::default') }

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require 'spec_helper' describe 'tmux::default' do before { Fauxhai.mock(platform: 'ubuntu', version: '12.04') } let(:runner) { ChefSpec::ChefRunner.new.converge('tmux::default') } end Before

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require 'spec_helper' describe 'tmux::default' do let(:runner) { ChefSpec::ChefRunner.new( platform: 'ubuntu', version: '12.04' ).converge('tmux::default') } end After

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require 'spec_helper' describe 'tmux::default' do let(:runner) { ChefSpec::ChefRunner.new( platform: 'ubuntu', version: '12.04' ).converge('tmux::default') } it 'installs the tmux package' do expect(runner).to install_package('tmux') end it 'creates the tmux.conf file' do expect(runner).to create_file('/etc/tmux.conf') end end After

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$ rspec cookbooks/tmux/spec/default_spec.rb

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$ rspec cookbooks/tmux/spec/default_spec.rb Failures: 1) tmux::default should install the tmux package Failure/Error: runner.should install_package 'tmux' No package resource named 'tmux' with action :install found. # ./cookbooks/tmux/spec/default_spec.rb:8:in `block (2 levels) in ' 2) tmux::default should create the tmux.conf file Failure/Error: runner.should create_file('/etc/ tmux.conf') No file resource named '/etc/tmux.conf' with action :create found. # ./cookbooks/tmux/spec/default_spec.rb:12:in `block (2 levels) in ' Finished in 0.14994 seconds 2 examples, 2 failures

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3 Setup Guard

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$ guard init

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$ guard init Writing new Guardfile to [...]/Guardfile

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guard 'rspec', spec_paths: ['spec', 'cookbooks/*/spec'] do end Guardfile

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guard 'rspec', spec_paths: ['spec', 'cookbooks/*/spec'] do watch(%r{^spec/.+_spec\.rb$}) end Guardfile

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guard 'rspec', spec_paths: ['spec', 'cookbooks/*/spec'] do watch(%r{^spec/.+_spec\.rb$}) watch('spec/spec_helper.rb') { 'spec' } end Guardfile

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guard 'rspec', spec_paths: ['spec', 'cookbooks/*/spec'] do watch(%r{^spec/.+_spec\.rb$}) watch('spec/spec_helper.rb') { 'spec' } watch(%r{^cookbooks/(.+)/recipes/(.+)\.rb$}) do |m| "cookbooks/#{m[1]}/spec/#{m[2]}_spec.rb" end end Guardfile

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$ guard

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$ guard Guard is now watching at '[...]/chef-repo' Guard::RSpec is running Running all specs Failures: 1) tmux::default should install the tmux package Failure/Error: runner.should install_package 'tmux' No package resource named 'tmux' with action :install found. # ./cookbooks/tmux/spec/default_spec.rb:8:in `block (2 levels) in ' 2) tmux::default should create the tmux.conf file Failure/Error: runner.should create_file('/etc/ tmux.conf') No file resource named '/etc/tmux.conf' with action :create found. # ./cookbooks/tmux/spec/default_spec.rb:12:in `block (2 levels) in '

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recipes/default.rb # Install the tmux package package 'tmux'

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# Install the tmux package package 'tmux' # Drop the tmux configuration template template '/etc/tmux.conf' do source 'tmux.conf.erb' mode '0644' end recipes/default.rb

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$ guard Guard is now watching at '[...]/chef-repo' Guard::RSpec is running Running all specs ** Finished in 0.0003 seconds 2 examples, 0 failures

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Wat?

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$ guard Guard is now watching at '[...]/chef-repo' Guard::RSpec is running Running all specs *F Failures: 1) tmux::default should create the tmux.conf file Failure/Error: runner.should create_file('/etc/ tmux.conf') No source template named 'tmux.conf.erb' found in the default locations. # ./cookbooks/tmux/spec/default_spec.rb:12:in `block (2 levels) in ' Finished in 0.15691 seconds 2 examples, 1 passed, 1 failures

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# Use a better prefix: set -g prefix C-a unbind C-b # Change the default delay: set -sg escape-time 1 # Set the window and panes index set -g base-index 1 setw -g pane-base-index 1 # Send prefix to other apps: bind C-a send-prefix # Split windows with more logical keys bind | split-window -h bind - split-window -v # Remap movement keys bind h select-pane -L bind j select-pane -D bind k select-pane -U bind l select-pane -R templates/default/tmux.conf.erb

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$ guard Guard is now watching at '[...]/chef-repo' Guard::RSpec is running Running all specs ** Finished in 0.0003 seconds 2 examples, 0 failures

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4 Moar Tests

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$ foodcritic cookbooks/tmux

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$ foodcritic -I my-rules/* cookbooks/tmux

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$ foodcritic -I my-rules/* cookbooks/tmux FC045: Consider setting cookbook name in metadata: cookbooks/tmux/metadata.rb:1

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$ foodcritic -I my-rules/* cookbooks/tmux FC045: Consider setting cookbook name in metadata: cookbooks/tmux/metadata.rb:1 $ echo $? 0

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$ foodcritic -I my-rules/* -f any cookbooks/tmux FC045: Consider setting cookbook name in metadata: cookbooks/tmux/metadata.rb:1 $ echo $? 3

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name 'tmux' maintainer 'everyone' maintainer_email 'everyone@mountainwest.conf' license 'apache2' description 'Installs and configures tmux' long_description # ... version '0.1.0' metadata.rb

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$ knife cookbook test tmux

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$ knife cookbook test tmux checking tmux Running syntax check on tmux Validating ruby files Validating templates

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5 Simplify

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ChefSpec foodcritic knife test

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ChefSpec foodcritic knife test Strainer

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knife: knife cookbook test $COOKBOOK foodcritic: foodcritic -f any $SANDBOX/$COOKBOOK chefspec: bundle exec rspec $SANDBOX/$COOKBOOK Strainerfile

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? Bonus

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#!/bin/bash set -e set +x git submodule update --init 2>&1 > /dev/null bundle install --quiet rm -Rf .colander strainer test `echo $JOB_NAME | sed 's/_cookbook//'` script/ci

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script/ci

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sethvargo@opscode.com E b yz

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? Questions