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: test_helper.rb
    path of file: ./repos/puppet/lib/puppet/test
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

require 'tmpdir'
require 'fileutils'

module Puppet::Test
  # This class is intended to provide an API to be used by external projects
  #  when they are running tests that depend on puppet core.  This should
  #  allow us to vary the implementation details of managing puppet's state
  #  for testing, from one version of puppet to the next--without forcing
  #  the external projects to do any of 
    
    def self.initialize
      # This meta class instance variable is used as a guard to ensure that
      # before_each, and after_each are only called once. This problem occurs
      # when there are more than one puppet test infrastructure orchestrator in use.
      # The use of both puppetabs-spec_helper, and rodjek-rspec_puppet will cause
      # two resets of the puppet environment, and will cause problem rolling back to
      # a known point as there is no way to differentiate where the calls are coming
      # from. See more information in #before_each_test, and #after_each_test
      # Note that the variable is only initialized to 0 if nil. This is important
      # as more than one orchestrator will call initialize. A second call can not
      # simply set it to 0 since that would potentially destroy an active guard.
      #
      @@reentry_count ||= 0

      @environmentpath = Dir.mktmpdir('environments')
      Dir.mkdir("#{@environmentpath}/production")
      owner = Process.pid
      Puppet.push_context(Puppet.base_context({
                                                :environmentpath => @environmentpath,
                                                :basemodulepath => "",
                                              }), "Initial for specs")
      Puppet::Parser::Functions.reset

      ObjectSpace.define_finalizer(Puppet.lookup(:environments), proc {
        if Process.pid == owner
          FileUtils.rm_rf(@environmentpath)
        end