atheiman

require 'rspec'

def remove_whitespace(string)
  lines = string.lines
  # remove leading and trailing blank lines
  lines.shift while lines.first.strip.empty?
  lines.pop while lines.last.strip.empty?
  # remove trailing whitespace from lines
  lines.map(&:rstrip).join("\n")
end

atheiman

# https://gist.github.com/atheiman/2b359b3da6a80fc0a6c8d54c78abfc5b
# 
# Write a function (with helper functions if needed) called to Excel that takes
# an excel column value (A,B,C,D…AA,AB,AC,… AAA..) and returns a corresponding
# integer value (A=1,B=2,… AA=27..).

module ExcelAlpha
  ALPHA_HASH = Hash[('A'..'Z').to_a.zip (1..26).to_a].freeze
  DECIMAL_HASH = ALPHA_HASH.invert.freeze
  

atheiman

[root@dokken ~]# /usr/local/ruby/jruby-9.1.13.0/bin/ruby -rnet/http -e "Net::HTTP.get(URI('https://www.google.com/'))"
OpenSSL::SSL::SSLError: certificate verify failed
  connect_nonblock at org/jruby/ext/openssl/SSLSocket.java:228
           connect at /usr/local/ruby/jruby-9.1.13.0/lib/ruby/stdlib/net/http.rb:938
          do_start at /usr/local/ruby/jruby-9.1.13.0/lib/ruby/stdlib/net/http.rb:868
             start at /usr/local/ruby/jruby-9.1.13.0/lib/ruby/stdlib/net/http.rb:857
             start at /usr/local/ruby/jruby-9.1.13.0/lib/ruby/stdlib/net/http.rb:585
      get_response at /usr/local/ruby/jruby-9.1.13.0/lib/ruby/stdlib/net/http.rb:480
               get at /usr/local/ruby/jruby-9.1.13.0/lib/ruby/stdlib/net/http.rb:457
            <main> at -e:1

atheiman

ruby_build $ KITCHEN_LOCAL_YAML=.kitchen.dokken.yml bundle exec kitchen test default-centos-6
-----> Starting Kitchen (v1.17.0)
-----> Cleaning up any prior instances of <default-centos-6>
-----> Destroying <default-centos-6>...
       Deleting kitchen sandbox at /Users/austinheiman/.dokken/kitchen_sandbox/8db929f748-default-centos-6
       Deleting verifier sandbox at /Users/austinheiman/.dokken/verifier_sandbox/8db929f748-default-centos-6
       Finished destroying <default-centos-6> (0m0.03s).
-----> Testing <default-centos-6>
-----> Creating <default-centos-6>...
       Creating kitchen sandbox at /Users/austinheiman/.dokken/kitchen_sandbox/8db929f748-default-centos-6

atheiman

describe 'cookbook::recipe' do
  cached(:chef_run) do
    ChefSpec::ServerRunner.new.converge(described_recipe)
  end

  it 'creates home directories' do
    %w[/home/testuser1 /home/testuser2].each do |d|
      expect(chef_run).to create_directory(d)
    end
  end

atheiman

# test_cookbook/recipes/default.rb
include_recipe 'test_cookbook::included_recipe'
include_recipe 'apt'


# test_cookbook/spec/recipes/default_spec.rb
describe 'test_cookbook::default' do
  before(:all) { @included_recipes = [] }
  before do
    @stubbed_recipes = %w[test_cookbook::included_recipe apt]

atheiman

def doubles?
  a = rand(1..6)
  b = rand(1..6)
  puts "#{a} and #{b}"
  raise 'Not doubles!' unless a == b
  true
end

def with_retries(retries: 2, sleep: 1)
  attempt = 1

atheiman

Chef Cookbook Review Guide

Things to look for when reviewing cookbook pull requests (examples are linked where explanation is necessary):

1. Attributes should be preferred over literals in resource properties

2. ChefSpec unit tests are included for any logic branches in recipes

3. Any plain Ruby is defined as a library method with rspec unit tests

atheiman

Keybase proof

I hereby claim:

• I am atheiman on github.
• I am austinheiman (https://keybase.io/austinheiman) on keybase.
• I have a public key ASC2ZiWvCqeAOkMAORKrAfBc6FUubaaHaXHScebkbcth0Ao

To claim this, I am signing this object:

atheiman

# chef-nodes is useful to share a nodes attributes with other nodes. if you want to share _converged_ node
# data (more than just ip and hostname from chef-nodes) then you can use test-kitchen >= 1.20.0 which adds
# support for downloading files from nodes after converge via .kitchen.yml:
# 
# provisioner:
#   nodes_path: test/fixtures/nodes
#   downloads:
#     /tmp/kitchen/nodes: test/fixtures/
# 
# this will download node data after converge and drop it into test/fixtures/nodes/node-a.json, node-b.json, etc