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_recorder.rb
    path of file: ./repos/psych/test/psych/handlers
    
    the code of the file until where you have to start completion: # frozen_string_literal: true
require 'psych/helper'
require 'psych/handlers/recorder'

module Psych
  module Handlers
    class TestRecorder < TestCase
      def test_replay
        yaml   = "--- foo\n...\n"
    
      def test_replay
        yaml   = "--- foo\n...\n"
        output = StringIO.new

        recorder = Psych::Handlers::Recorder.new
        parser   = Psych::Parser.new recorder
        parser.parse yaml

        assert_equal 5, recorder.events.length

        emitter = Psych::Emitter.new output
        recorder.events.each do |m, args|
          emitter.send m, *args
        end
        assert_equal yaml, output.string
      end