Test Kitchen

Utilizing test kitchen is optional but valuable. Here are the kitchen settings and example inspec tests.

kitchen.yml

---
driver:
  name: dokken
  chef_version: latest
  use_sudo: false
  privileged: true
  run_command: init
  build_options: --tag kitchen:<%= File.basename(Dir.pwd) %>
  hostname: default-os

transport:
  name: dokken

provisioner:
  name: dokken
  
verifier:
  name: inspec

platforms:
  - name: centos-7
    driver:
      image: dokken/centos-7
      pid_one_command: /usr/lib/systemd/systemd
  - name: ubuntu-20.04
    driver:
      image: dokken/ubuntu-20.04
      pid_one_command: /bin/systemd
      intermediate_instructions:
        - RUN /usr/bin/apt-get update
  - name: ubuntu-22.04
    driver:
      image: dokken/ubuntu-22.04
      pid_one_command: /bin/systemd
      intermediate_instructions:
        - RUN /usr/bin/apt-get update

suites:
  - name: default
    run_list:
      - ::default      
    attributes:
      org_namespace: org1
      org1:
        test_kitchen: true
...

Inspec tests

Inspec tests would be located: [cookbook]/test/integration/default

files.spec.rb

describe file('/etc/modules-load.d/zram.conf') do
  it { should exist }
  its('content') { should match /^zram$/ }
end

describe file('/etc/modprobe.d/zram.conf') do
  it { should exist }
  its('content') { should match /num_devices/ }
end

describe file('/etc/udev/rules.d/99-zram.rules') do
  it { should exist }
  its('content') { should match /^KERNEL.*ATTR.*systemd/ }
end

service_spec.rb

describe service('zram') do
  it { should be_installed }
  it { should be_enabled }
end

sysctl_spec.rb

describe command('sysctl -a') do
  its('stdout') { should match /vm.swappiness = 100/ }
  its('stdout') { should match /vm.vfs_cache_pressure = 500/ }
  its('stdout') { should match /vm.dirty_background_ratio = 1/ }
  its('stdout') { should match /vm.dirty_ratio = 50/ }
end