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_puma_server.rb
    path of file: ./repos/puma/test
    
    the code of the file until where you have to start completion: require_relative "helper"
require "puma/events"
require "puma/server"
require "net/http"
require "nio"
require "ipaddr"

class WithoutBacktraceError < StandardError
  def backtrace; nil; end
  def message; "no backtrace error";
    
  def test_chunked_request_pause_before_closing_cr_lf
    body = nil
    content_length = nil
    server_run { |env|
      body = env['rack.input'].read
      content_length = env['CONTENT_LENGTH']
      [200, {}, [""]]
    }

    socket = send_http "PUT /path HTTP/1.1\r\nConnection: close\r\nTransfer-Encoding: chunked\r\n\r\n5\r\nhello"

    sleep 1

    socket << "\r\n0\r\n\r\n"

    data = socket.read

    assert_equal "HTTP/1.1 200 OK\r\nConnection: close\r\nContent-Length: 0\r\n\r\n", data
    assert_equal 'hello', body
    assert_equal "5", content_length
  end