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_err_in_callback.rb
    path of file: ./repos/ruby-packer/ruby/test/win32ole
    
    the code of the file until where you have to start completion: # frozen_string_literal: false
#
# test Win32OLE avoids cfp consistency error when the exception raised
# in WIN32OLE_EVENT handler block. [ruby-dev:35450]
#

begin
  require 'win32ole'
rescue LoadError
en
    
    def setup
      @ruby = nil
      if File.exist?("./" + CONFIG["RUBY_INSTALL_NAME"] + CONFIG["EXEEXT"])
        sep = File::ALT_SEPARATOR || "/"
        @ruby = "." + sep + CONFIG["RUBY_INSTALL_NAME"]
        cwd = Pathname.new(File.expand_path('.'))
        @iopt = $:.map {|e|
          " -I " + (Pathname.new(e).relative_path_from(cwd).to_s rescue e)
        }.join("")
        script = File.join(File.dirname(__FILE__), "err_in_callback.rb")
        @script = Pathname.new(script).relative_path_from(cwd).to_s rescue script
      end