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_logger.rb
    path of file: ./repos/truffleruby/test/mri/tests/logger
    
    the code of the file until where you have to start completion: # coding: US-ASCII
# frozen_string_literal: false
require 'logger'
require 'tempfile'

class TestLogger < Test::Unit::TestCase
  include Logger::Severity

  def setup
    @logger = Logger.new(nil)
  end

  class Log
    attr_reader :label, :datetime, :pid, :severity, :progname, :msg
    def initialize(line)
      /\A(\w+), \[([^#]*) #(\d+)\]\s+(\w+) -- (\w*): ([\x0-\xff]*)/ =~ line
      @label, @datetime, @pid, @severity, @progname, @msg = $1, $2, $3, $4, $5, $6
    end
  end

  def log_add(logger, severity, msg, progname = nil, &block)
    log(logger, :add, severity, msg, progname, &block)
  end

  def log(logger, msg_id, *arg, &block)
    Log.new(log_raw(logger, msg_id, *arg, &block))
  end

  def log_raw
    
  def test_level
    @logger.level = UNKNOWN
    assert_equal(UNKNOWN, @logger.level)
    @logger.level = INFO
    assert_equal(INFO, @logger.level)
    @logger.sev_threshold = ERROR
    assert_equal(ERROR, @logger.sev_threshold)
    @logger.sev_threshold = WARN
    assert_equal(WARN, @logger.sev_threshold)
    assert_equal(WARN, @logger.level)

    @logger.level = DEBUG
    assert(@logger.debug?)
    assert(@logger.info?)
    @logger.level = INFO
    assert(!@logger.debug?)
    assert(@logger.info?)
    assert(@logger.warn?)
    @logger.level = WARN
    assert(!@logger.info?)
    assert(@logger.warn?)
    assert(@logger.error?)
    @logger.level = ERROR
    assert(!@logger.warn?)
    assert(@logger.error?)
    assert(@logger.fatal?)
    @logger.level = FATAL
    assert(!@logger.error?)
    assert(@logger.fatal?)
    @logger.level = UNKNOWN
    assert(!@logger.error?)
    assert(!@logger.fatal?)
  end