You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: settings_spec.rb
    path of file: ./repos/puppet/spec/unit
    
    the code of the file until where you have to start completion: require 'spec_helper'
require 'ostruct'
require 'puppet/settings/errors'
require 'puppet_spec/files'
require 'matchers/resource'

describe Puppet::Settings do
  include PuppetSpec::Files
  include Matchers::Resource

  let(:main_config_file_default_location) do
    File.join(Puppet::Util::RunMode[:server].conf_dir, "puppet.conf")
  end

  let(:user_config_file_default_location) do
    File.join(Puppet::Util::RunMode[:user].conf_dir, "puppet.conf")
  end

  # Return a given object's file metadata.
  def metadata(setting)
    if setting.is_a?(Puppet::Settings::FileSetting)
      {
        :owner => setting.owner,
        :group => setting.group,
        :mode => setting.mode
      }.delete_if { |key, value| value.nil? }
    else
      nil
    end
  end

  def stub_config_with(content)
    allow(Puppet.features).to receive(:root?).and_return(false)
    expect(Puppet::FileSystem).to receive(:exist?).
      with(user_config_file_default_location).
      and_return(true).ordered
    expect(@settings).to receive(:read_file).
      with(user_config_file_default_location).
      and_return(content).ordered
    @settings.send(:parse_config_files)
  end

  describe "when specifying defaults" do
    before do
      @settings = Puppet::Settings.new
    end

    it "should start with no defined sections or parameters" do
      # Note this re
    
    def a_group_type_for(groupname)
      group = double('group', 'suitable?': true, to_s: "Group[#{groupname}]")
      expect(Puppet::Type.type(:group)).to receive(:new).with(hash_including(name: groupname)).and_return(group)
      group
    end

    it "should return false if there is no group setting" do
      expect(settings).not_to be_service_group_available
    end

    it "should return false if the group provider says the group is missing" do
      settings[:group] = "foo"

      expect(a_group_type_for("foo")).to receive(:exists?).and_return(false)

      expect(settings).not_to be_service_group_available
    end

    it "should return true if the group provider says the group is present" do
      settings[:group] = "foo"

      expect(a_group_type_for("foo")).to receive(:exists?).and_return(true)

      expect(settings).to be_service_group_available
    end

    it "caches the result of determining if the group is present" do
      settings[:group] = "foo"

      expect(a_group_type_for("foo")).to receive(:exists?).and_return(true)
      expect(settings).to be_service_group_available

      expect(settings).to be_service_group_available
    end

    it "raises if the group is not suitable" do
      settings[:group] = "foo"

      expect(a_group_type_for("foo")).to receive(:suitable?).and_return(false)

      expect {
        settings.service_group_available?
      }.to raise_error(Puppet::Error, /Cannot manage group permissions, because the provider for 'Group\[foo\]' is not functional/)
    end
  end