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_configdsl.rb
    path of file: ./repos/fluentd/test
    
    the code of the file until where you have to start completion: require_relative 'helper'
require 'fluent/config/dsl'
require 'fluent/test'

class ConfigDSLTest < Test::Unit::TestCase
  # TEST_CONFIG1 = %[
  #   <source>
  #     type forward
  #     port 24224
  #   </source>
  #   <match test.**>
  #     type forward
  #     flush_interval 1s
  #     <server>
  #       host host0.example.com
  #       port 24224
  #     </server>
  #     <server>
  #       host host1.example.com
  #       port 24224
  #     </server>
  #   </match>
  # ]
  TEST_DSL_CONFIG1 = %q[
source {
  type "forward"
  port 24224
}
match('test.**') {
  type "forward"
  flush_interval "1s"
  (0..1)
    
  def test_with_ruby_keyword
    uname_string = `uname -a`
    root1 = Fluent::Config::DSL::Parser.parse(<<DSL)
uname_str = ruby.open('|uname -a'){|out| out.read}
source {
  uname uname_str
}
DSL
    source1 = root1.elements.first
    assert_equal 'source', source1.name
    assert_equal 1, source1.keys.size
    assert_equal uname_string, source1['uname']

    root2 = Fluent::Config::DSL::Parser.parse(<<DSL)
ruby_version = ruby {
  require 'erb'
  ERB.new('<%= RUBY_VERSION %> from erb').result
}
source {
  version ruby_version
}
DSL
    source2 = root2.elements.first
    assert_equal 'source', source2.name
    assert_equal 1, source2.keys.size
    assert_equal "#{RUBY_VERSION} from erb", source2['version']

    # Parser#parse raises NoMethodError when configuration dsl elements are written in ruby block
    conf3 = <<DSL
ruby {
  source {
    type "tail"
  }
}
source {
  uname uname_str
}
DSL
    assert_raise (NoMethodError) { Fluent::Config::DSL::Parser.parse(conf3) }
  end