# File lib/fakefs/base.rb, line 19
  def self.deactivate!
    Object.class_eval do
      remove_const(:Dir)
      remove_const(:File)
      remove_const(:FileUtils)
      const_set(:Dir, RealDir)
      const_set(:File, RealFile)
      const_set(:FileUtils, RealFileUtils)
    end
  end