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_rdoc_generator_json_index.rb
    path of file: ./repos/ruby/test/rdoc
    
    the code of the file until where you have to start completion: # coding: US-ASCII
# frozen_string_literal: true

require_relative 'helper'

class TestRDocGeneratorJsonIndex < RDoc::TestCase

  def setup
    super

    @tmpdir = Dir.mktmpdir "test_rdoc_generator_darkfish_#{$$}_"
    FileUtils.mkdir_p @tmpdir

    @options = RDoc::Options.new
    @options.files = []
    # JsonIndex
    
  def test_index_classes_nodoc
    @klass.document_self      = false
    @nest_klass.document_self = false
    @meth.document_self       = false
    @nest_meth.document_self  = false

    @g.reset @top_levels, @klasses

    @g.index_classes

    expected = {
      :searchIndex     => [],
      :longSearchIndex => [],
      :info            => [],
    }

    assert_equal expected, @g.index
  end