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_cesu8.rb
    path of file: ./repos/artichoke/artichoke-backend/vendor/ruby/test/ruby/enc
    
    the code of the file until where you have to start completion: # frozen_string_literal: false
require 'test/unit'

class TestCESU8 < Test::Unit::TestCase

  def encdump(obj)
    case obj
    when String
      obj.dump
    when Regexp
      "Regexp.new(#{encdump(obj.source)}, #{obj.options})"
    else
      raise Argument, "unexpected: #{obj.inspect}"
 
    
  def test_cesu8_ord
    [
      ["\x00", 0],
      ["\x7f", 0x7f],
      ["\u0080", 0x80],
      ["\u07ff", 0x7ff],
      ["\u0800", 0x800],
      ["\ud7ff", 0xd7ff],
      ["\xed\xa0\x80\xed\xb0\x80", 0x10000],
      ["\xed\xaf\xbf\xed\xbf\xbf", 0x10ffff],
      ["\xee\x80\x80", 0xe000],
      ["\xef\xbf\xbf", 0xffff],
    ].each do |chr, ord|
      chr.force_encoding("cesu-8")
      assert_equal ord, chr.ord
      assert_equal chr, ord.chr("cesu-8")
    end
  end