class ChefCLI::PolicyfileServices::UpdateAttributes

def assert_policy_and_lock_present!
  unless File.exist?(policyfile_expanded_path)
    raise PolicyfileNotFound, "Policyfile not found at path #{policyfile_expanded_path}"
  end
  unless File.exist?(policyfile_lock_expanded_path)
    raise LockfileNotFound, "Policyfile lock not found at path #{policyfile_lock_expanded_path}"
  end
end