Running local Serverspec tests via Packer with thanks to Rickard von Essen

serverspec.json

{
	"variables": {
		"aws_access_key": "",
		"aws_secret_key": ""
	},
	"builders": [{
		"type": "amazon-ebs",
		"access_key": "{{user `aws_access_key`}}",
		"secret_key": "{{user `aws_secret_key`}}",
		"region": "us-east-1",
		"source_ami": "ami-a025aeb6",
		"instance_type": "t2.micro",
		"ssh_username": "ubuntu",
		"ami_name": "serverspec-ami {{timestamp | clean_ami_name}}"
	}],
	"provisioners": [{
			"type": "shell",
			"script": "install-puppet.sh"
		},
		{
			"source": "hieradata",
			"type": "file",
			"destination": "/tmp"
		},
		{
			"type": "puppet-masterless",
			"manifest_file": "manifests/site.pp",
			"puppet_bin_dir": "/opt/puppetlabs/bin",
			"hiera_config_path": "hiera.yaml",
			"module_paths": [
				"modules"
			]
		},
		{
			"type": "shell",
			"inline": [
				"ifconfig enp0s5 | grep inet\\ | sed -e 's/.*inet \\([^ ]*\\).*/export TARGET_HOST=\\1/'  > /tmp/ip"
			]
		},
		{
			"type": "file",
			"source": "/tmp/ip",
			"destination": "ip",
			"direction": "download"
		},
		{
			"command": ". ip && cd tests && echo $TARGET_HOST && rbenv exec rake spec",
			"type": "shell-local"
		}
	]
}

spec_helper.rb

require 'serverspec'

set :backend, :ssh
set :host, ENV['TARGET_HOST']
set :ssh_options, {
  :password => 'vagrant',
  :user => 'vagrant',
  :paranoid => false
}