The simple, default rspec file I am trying to get to work with Chef

default_spec.rb

#
# Cookbook Name:: pulse_web
# Spec:: default
#
# Copyright (c) 2016 The Authors, All Rights Reserved.

require 'spec_helper'

describe 'pulse_web::default' do
  let(:chef_run) do
    runner = ChefSpec::ServerRunner.new(platform: 'windows', version: '2012R2')
    runner.converge(described_recipe)
  end

  it 'converges successfully' do
    expect { chef_run }.to_not raise_error
  end
end