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(Из главы 14 в «Гибкой веб-разработке с Rails 6») Я пытаюсь запустить системный тест, который касается модели, для которой требуется файл из каталога /lib. Файл загружается нормально, и код отлично работает на локальном хосте в режиме разработки, но как только я запускаю тест, он выдает ошибки с:

 Error: OrdersTest#test_visiting_the_index: DRb::DRbRemoteError: cannot load such file -- pago (LoadError)  app/models/order.rb:1:in `lt;maingt;'  

Выдержка из модели order.rb , для которой требуется файл , является:

 require "pago"  class Order lt; ApplicationRecord  enum pay_type: {  "Cheque" =gt; 0,  "Credit card" =gt; 1,  "Purchase order" =gt; 2  }  has_many :line_items, dependent: :destroy    validates :name, :address, :email, presence: true  validates :pay_type, inclusion: pay_types.keys    def add_line_items_from_cart(cart)  cart.line_items.each do |item|  item.cart_id = nil  line_items lt;lt; item  end  end   def charge!(pay_type_params)  payment_details = {}  payment_method = nil   case pay_type  when "Cheque"  payment_method = :cheque  payment_details[:routing] = pay_type_params[:routing_number]  payment_details[:account] = pay_type_params[:account_number]  when "Credit card"  payment_method = :credit_card  month,year = pay_type_params[:expiration_date].split(//)  payment_details[:cc_num] = pay_type_params[:credit_card_number]  payment_details[:expiration_month] = month  payment_details[:expiration_year] = year  when "Purchase order"  payment_method = :po  payment_details[:po_num] = pay_type_params[:po_number]  end   payment_result = Pago.make_payment(  order_id: id,  payment_method: payment_method,  payment_details: payment_details  )   if payment_result.succeeded?  OrderMailer.received(self).deliver_later  else  raise payment_result.error  end  end end  

Выдержка из фактического /lib/pago.rb :

 require "ostruct"  class Pago    def self.make_payment(order_id:,  payment_method:,  payment_details:)  case payment_method  when :cheque  Rails.logger.info "Processing cheque: "    payment_details.fetch(:routing).to_s   "/"     payment_details.fetch(:account).to_s  when :credit_card  Rails.logger.info "Processing credit_card: "    payment_details.fetch(:cc_num).to_s   "/"     payment_details.fetch(:expiration_month).to_s   "/"     payment_details.fetch(:expiration_year).to_s  when :po  Rails.logger.info "Processing purchase order: "    payment_details.fetch(:po_num).to_s  else  raise "Unknown payment_method #{payment_method}"  end  sleep 3 unless Rails.env.test?  Rails.logger.info "Done Processing Payment"  OpenStruct.new(succeeded?: true)  end end  

The test file that I’, trying to run: test/system/orders_test.rb

 require "application_system_test_case"  class OrdersTest lt; ApplicationSystemTestCase  include ActiveJob::TestHelper  setup do  @order = orders(:one)  end   test "visiting the index" do  visit orders_url  assert_selector "h1", text: "Orders"  end   test "destroying an Order" do  visit orders_url  page.accept_confirm do  click_on "Destroy", match: :first  end   assert_text "Order was successfully destroyed"  end   test "check full payment with cheque flow" do  LineItem.delete_all  Order.delete_all   visit store_index_url   click_on 'Add to cart', match: :first   click_on 'Checkout'   fill_in 'order_name', with: 'Dave Thomas'  fill_in 'order_address', with: '123 Main Street'  fill_in 'order_email', with: 'dave@example.com'   assert_no_selector "#order_routing_number"   select 'Cheque', from: 'Pay type'  fill_in 'Routing #', with: '123456'  fill_in 'Account #', with: '678901'   assert_selector "#order_routing_number"  assert_selector "#order_account_number"   perform_enqueued_jobs { click_button 'Place order' }    orders = Order.all  assert_equal 1, orders.size  order = orders.first   assert_equal 'Dave Thomas', order.name  assert_equal '123 Main Street', order.address  assert_equal 'dave@example.com', order.email  assert_equal 'Cheque', order.pay_type   assert_equal 1, order.line_items.size    mail = ActionMailer::Base.deliveries.last  assert_equal ['dave@example.com'], mail.to  assert_equal 'James Kemplt;from@example.comgt;', mail[:from].value  assert_equal 'Order received; thanks', mail.subject  end    test "check CC number for credit card payment choice" do  visit store_index_url   click_on 'Add to cart', match: :first   click_on 'Checkout'   fill_in 'order_name', with: 'Dave Thomas'  fill_in 'order_address', with: '123 Main Street'  fill_in 'order_email', with: 'dave@example.com'   assert_no_selector "#order_credit_card_number"  assert_no_selector "#order_expiration_date"   select 'Credit card', from: 'Pay type'   assert_selector "#order_credit_card_number"  assert_selector "#order_expiration_date"  end   test "check PO number for purchase order payment choice" do  visit store_index_url   click_on 'Add to cart', match: :first   click_on 'Checkout'   fill_in 'order_name', with: 'Dave Thomas'  fill_in 'order_address', with: '123 Main Street'  fill_in 'order_email', with: 'dave@example.com'   assert_no_selector "#order_po_number"   select 'Purchase order', from: 'Pay type'   assert_selector "#order_po_number"  end  end  

Если я запущу консоль rails require 'pago' , она вернет значение true. Я не вижу никаких подсказок в различных файлах конфигурации и среды относительно того, в чем может быть проблема. Код учебника, похоже, такой же, как и у меня. Я просто не могу понять, что здесь не так. Кто-нибудь может помочь?

Мой файл Gemfile К вашему сведению (у меня установлен пакет):

 source 'https://rubygems.org' git_source(:github) { |repo| "https://github.com/#{repo}.git" }  ruby '3.0.2'  # Bundle edge Rails instead: gem 'rails', github: 'rails/rails', branch: 'main' gem 'rails', '~gt; 6.1.4', 'gt;= 6.1.4.1' # Use sqlite3 as the database for Active Record gem 'sqlite3', '~gt; 1.4' # Use Puma as the app server gem 'puma', '~gt; 5.0' # Use SCSS for stylesheets gem 'sass-rails', 'gt;= 6' # Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker gem 'webpacker', '~gt; 5.0' # Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks gem 'turbolinks', '~gt; 5' # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder gem 'jbuilder', '~gt; 2.7' # Use Redis adapter to run Action Cable in production # gem 'redis', '~gt; 4.0' # Use Active Model has_secure_password # gem 'bcrypt', '~gt; 3.1.7'  # Use Active Storage variant # gem 'image_processing', '~gt; 1.2'  # Reduces boot times through caching; required in config/boot.rb gem 'bootsnap', 'gt;= 1.4.4', require: false  group :development, :test do  # Call 'byebug' anywhere in the code to stop execution and get a debugger console  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw] end  group :development do  # Access an interactive console on exception pages or by calling 'console' anywhere in the code.  gem 'web-console', 'gt;= 4.1.0'  # Display performance information such as SQL time and flame graphs for each request in your browser.  # Can be configured to work on production as well see: https://github.com/MiniProfiler/rack-mini-profiler/blob/master/README.md  gem 'rack-mini-profiler', '~gt; 2.0'  gem 'listen', '~gt; 3.3'  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring  gem 'spring' end  group :test do  # Adds support for Capybara system testing and selenium driver  gem 'capybara', 'gt;= 3.26'  gem 'selenium-webdriver'  # Easy installation and use of web drivers to run system tests with browsers  gem 'webdrivers' end  # Windows does not include zoneinfo files, so bundle the tzinfo-data gem gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]