script = <<-EOH
  # Initialize variable to empty array
  $NonCompliantServices = @()

  # Specify relevant services
  $Services = @(
      "wuauserv",
      "W3SVC",
      "XboxGipSvc",
      "XblGameSave"
  )

  # Enumerate all services
  $NonCompliantServices += Get-Service $Services -ErrorAction 'SilentlyContinue' | Where-Object {$_.StartType -ne 'Disabled'}

  # Output; 'True' or list of noncompliant services
  Write-Output ($True, $NonCompliantServices)[!($NonCompliantServices.Count -eq 0)]
EOH

control "disabled_services" do
    title 'Disabled services'
    desc '
        This test assures that all unneeded services are set to "disabled".
    '

    describe powershell(script) do
        its('stdout') { should match 'True' }
    end
end