ChefSpec "powershell_script" error

error

Failures:

  1) gocd-agent::default When all attributes are default, on an unspecified platform includes dependent recipes
     Failure/Error: runner.converge(described_recipe)

     Mixlib::ShellOut::ShellCommandFailed:
       Expected process to exit with [0], but received '127'
       ---- Begin output of powershell.exe -NoLogo -NonInteractive -NoProfile -ExecutionPolicy Unrestricted -InputFormat None -Command "[System.Environment]::GetEnvironmentVariable('ChocolateyInstall', 'MACHINE')" ----
       STDOUT:
       STDERR: sh: powershell.exe: command not found
       ---- End output of powershell.exe -NoLogo -NonInteractive -NoProfile -ExecutionPolicy Unrestricted -InputFormat None -Command "[System.Environment]::GetEnvironmentVariable('ChocolateyInstall', 'MACHINE')" ----
       Ran powershell.exe -NoLogo -NonInteractive -NoProfile -ExecutionPolicy Unrestricted -InputFormat None -Command "[System.Environment]::GetEnvironmentVariable('ChocolateyInstall', 'MACHINE')" returned 127
     # /var/folders/wl/r_v783rd2cd8jllgv1426mx40000gn/T/d20160322-3169-1h8fmk5/cookbooks/chocolatey/libraries/helpers.rb:40:in `env_var'
     # /var/folders/wl/r_v783rd2cd8jllgv1426mx40000gn/T/d20160322-3169-1h8fmk5/cookbooks/chocolatey/libraries/helpers.rb:36:in `machine_env_var'
     # /var/folders/wl/r_v783rd2cd8jllgv1426mx40000gn/T/d20160322-3169-1h8fmk5/cookbooks/chocolatey/libraries/helpers.rb:9:in `block in chocolatey_install'
     # /var/folders/wl/r_v783rd2cd8jllgv1426mx40000gn/T/d20160322-3169-1h8fmk5/cookbooks/chocolatey/libraries/helpers.rb:9:in `fetch'
     # /var/folders/wl/r_v783rd2cd8jllgv1426mx40000gn/T/d20160322-3169-1h8fmk5/cookbooks/chocolatey/libraries/helpers.rb:9:in `chocolatey_install'
     # /var/folders/wl/r_v783rd2cd8jllgv1426mx40000gn/T/d20160322-3169-1h8fmk5/cookbooks/chocolatey/libraries/helpers.rb:26:in `chocolatey_installed?'
     # /var/folders/wl/r_v783rd2cd8jllgv1426mx40000gn/T/d20160322-3169-1h8fmk5/cookbooks/chocolatey/recipes/default.rb:33:in `block (2 levels) in from_file'
     # ./spec/unit/recipes/default_spec.rb:23:in `block (3 levels) in <top (required)>'
     # ./spec/unit/recipes/default_spec.rb:27:in `block (3 levels) in <top (required)>'

recipe

node.override['gocd']['agent']['go_server_host'] = 'gocd.uk.org'
node.override['gocd']['agent']['package_file']['url'] = 'https://download.go.cd/binaries/16.2.1-3027/win/go-agent-16.2.1-3027-setup.exe'

include_recipe 'gocd::agent'

# Construct the ".chef" directory.
powershell_script 'write-to-interpolated-path' do
  code <<-EOH
  New-Item -ItemType Directory -Force -Path C:/.chef
  EOH
end

spec

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

require 'spec_helper'

RSpec.configure do |config|
  config.platform = 'windows'
  config.version  = '2012R2'
end

describe 'gocd-agent::default' do
  context 'When all attributes are default, on an unspecified platform' do
    let(:chef_run) do
      runner = ChefSpec::ServerRunner.new
      runner.node.automatic['platform_family'] = 'windows'
      runner.node.automatic['platform'] = 'windows'
      runner.node.automatic['os'] = 'windows'
      runner.node.set['gocd']['agent']['go_server_host'] = 'gocd.ukpds.org'
      runner.node.set['gocd']['agent']['package_file']['url'] = 'https://download.go.cd/binaries/16.2.1-3027/win/go-agent-16.2.1-3027-setup.exe'
      runner.converge(described_recipe)
    end

    it 'includes dependent recipes' do
      expect(chef_run).to include_recipe('gocd::agent')
    end

    it 'executes the write-to-interpolated-path powershell script' do
      expect(chef_run).to run_powershell_script('write-to-interpolated-path')
    end
  end
end

I also have this issue, did either of you make any progress?