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

require 'test_helper'

class ConfigTest < ViteRuby::Test
  def expand_path(path)
    File.expand_path(Pathname.new(__dir__).join(path).to_s)
  end

  def assert_path(expected, actual)
    assert_equal expand_path(expected), actual.to_s
  end

  def assert_pathname(expected, actual)
    assert_equal Pathname.new(expand_path("test_app/#{ expected }")), actual
  end

  def resolve_config(mode: 'production', root: test_app_path, **attrs)
    ViteRuby::Config.resolve_config(mode: mode, root: root, **attrs)
  end

  def setup
    super
    @config = resolve_config
  end

  def test_matching_default_config_json
    root = Pathname.new(__dir__).join('..')
    assert_equal root.join('vite-plugin-ruby/default.vite.json').read, root.join('vite_ruby/default.vite.json').read
  end

  def test_source_code_dir
    assert_equal 'app/frontend', @config.source_code_dir
  end

  def test_entrypoints_dir
    assert_path 'test_app/app/frontend/entrypoints', @config.resolved_entrypoints_dir
  end

  def test_vite_root_dir
    assert_path 'test_app/app/frontend', @config.vite_root_dir
  end

  def test_public_dir
    assert_equal 'public', @config.public_dir
  end

  def test_build_ou
    
  def test_environment_vars
    ViteRuby.env.tap(&:clear).merge!(
      'VITE_RUBY_AUTO_BUILD' => 'true',
      'VITE_RUBY_HOST' => 'example.com',
      'VITE_RUBY_PORT' => '1920',
      'VITE_RUBY_HTTPS' => 'true',
      'VITE_RUBY_CONFIG_PATH' => 'config/vite_additional_paths.json',
      'VITE_RUBY_BUILD_CACHE_DIR' => 'tmp/vitebuild',
      'VITE_RUBY_PUBLIC_DIR' => 'pb',
      'VITE_RUBY_PUBLIC_OUTPUT_DIR' => 'ft',
      'VITE_RUBY_ASSETS_DIR' => 'as',
      'VITE_RUBY_SOURCE_CODE_DIR' => 'app',
      'VITE_RUBY_ENTRYPOINTS_DIR' => 'frontend/entrypoints',
      'VITE_RUBY_HIDE_BUILD_CONSOLE_OUTPUT' => 'true',
      'VITE_RUBY_SKIP_COMPATIBILITY_CHECK' => 'true',
    )
    @config = resolve_config
    assert @config.auto_build
    assert_equal 'example.com', @config.host
    assert_equal 1920, @config.port
    assert @config.https
    assert_equal 'https', @config.protocol
    assert_equal 'config/vite_additional_paths.json', @config.config_path
    assert_pathname 'tmp/vitebuild', @config.build_cache_dir
    assert_equal 'pb', @config.public_dir
    assert_equal 'ft', @config.public_output_dir
    assert_pathname 'pb/ft', @config.build_output_dir
    assert_equal 'as', @config.assets_dir
    assert_equal 'app', @config.source_code_dir
    assert @config.skip_compatibility_check
    assert_equal 'frontend/entrypoints', @config.entrypoints_dir
    assert_pathname 'app', @config.vite_root_dir
    assert_pathname 'app/frontend/entrypoints', @config.resolved_entrypoints_dir
    assert @config.hide_build_console_output
  ensure
    ViteRuby.env.clear
  end