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: multi_logger_test.rb
    path of file: ./repos/iruby/test/iruby
    
    the code of the file until where you have to start completion: class IRubyTest::MultiLoggerTest < IRubyTest::TestBase
  de
    
  def test_level
    out, err = StringIO.new, StringIO.new
    logger = IRuby::MultiLogger.new(Logger.new(out), Logger.new(err))

    logger.level = Logger::DEBUG
    assert_equal Logger::DEBUG, logger.level
    assert_all(logger.loggers) {|l| l.level == Logger::DEBUG }

    logger.level = Logger::INFO
    assert_equal Logger::INFO, logger.level
    assert_all(logger.loggers) {|l| l.level == Logger::INFO }
  end