Copy/paste for chef class

attributes_default.rb

default['chefnovaclient']['username'] = "USERNAME"
default['chefnovaclient']['password'] = "APIKEY"

Berksfile

site :opscode

cookbook 'apt'
cookbook 'build-essential'
cookbook 'python'
metadata

recipes_default.rb

include_recipe "apt"
include_recipe "python::pip"

%w{git python-dev build-essential}.each do |pkg|
	package pkg do
		action :install
	end
end

python_pip "rackspace-novaclient" do
	action :install
end

python_pip "git+git://github.com/major/supernova.git" do
	action :install
end

template "/root/.supernova" do
  source "supernova.erb"
  mode 0600
  owner "root"
  group "root"
end

supernova.erb

[myaccount]
OS_AUTH_URL=https://identity.api.rackspacecloud.com/v2.0/
OS_VERSION=2.0
OS_AUTH_SYSTEM=rackspace
OS_REGION_NAME=DFW
OS_SERVICE_NAME=cloudserversOpenStack
OS_TENANT_NAME=<%= node['chefnovaclient']['username'] %>
OS_USERNAME=<%= node['chefnovaclient']['username'] %>
OS_PASSWORD=<%= node['chefnovaclient']['password'] %>
OS_NO_CACHE=1
NOVA_VOLUME_SERVICE_NAME=cloudBlockStorage

test_unit_spec_default_spec.rb

# Encoding: utf-8

require_relative 'spec_helper'

describe 'chefnovaclient::default' do

  before do
    stub_command("/usr/bin/python -c 'import setuptools'").and_return(true)
  end

  describe 'ubuntu' do
    let(:chef_run) { ChefSpec::Runner.new.converge(described_recipe) }

    it 'creates a .supernova file' do
      expect(chef_run).to create_template('/root/.supernova')
    end

  end
end