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: graph_test.rb
    path of file: ./repos/stateful_enum/test
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

require 'test_helper'

class GraphTest < ActiveSupport::TestCase
  def test_graph

    
  def test_graph
    FileUtils.rm_f Rails.root.join('Bug.png')
    FileUtils.rm_f Rails.root.join('.smdconfig')

    Dir.chdir Rails.root do
      `rails g stateful_enum:graph bug`
    end

    assert File.exist?(Rails.root.join('Bug.png'))
  end