Многие тесты rpsec с test_sign_in терпят неудачу после обновления до Rails 3.1, возможно, проблема с файлами cookie?

Я обновился до Rails 3.1, и все работает нормально. Но тесты (RSpec) все равно не проходят, т.е. следующий:

describe "for admin user" do

  before(:each) do
    @city = Factory(:city)
    @user = Factory(:user)
    @business = Factory(:business, :user_id => @user.id, 
                        :city_id => @city.id)
    @admin = test_sign_in(Factory(:user, :email => "[email protected]", 
                                  :admin => true))
  end

  it "should have an edit link for all businesses in show city" do
    get :show, :id => @city
    response.should have_selector('a',
      :href => "/businesses/#{@business.id}-Factory-business-city-Factory-business/edit")
  end
end

Это отлично работало с Rails 3.0.8, но теперь тест не проходит. Журнал испытаний говорит:

[1m[35mSQL (0,2 мс)[0m ВСТАВИТЬ В users (admin, created_at, email, encrypted_password, name, salt, updated_at) ЗНАЧЕНИЯ (1, '2011-09-21 10:30:30', 'admin@example. Это ',' 68F8A34E0243A642662FE2B642662FE2B6EA8ED7CO714D042750A66CECE542F2DF288CAEFAC32 ', «Имя администратора», «6DF34C304D79437D495E60D2D34E10284897314146690EFBC25C714224EDB1F', '2011-09-21 10:30:30')

Обработка CitiesController#show as HTML [1m[35mUser Load (0.2ms)[0m SELECT users.* FROM users WHERE users.id IS NULL LIMIT 1

[1м[36мГородская нагрузка (0,2мс)[0м [1мВЫБЕРИТЕ cities.* ИЗ cities ГДЕ cities.id = 942 ПРЕДЕЛ 1[0м

[1 м[35 мГородская нагрузка (0,2 мс)[0 м ВЫБЕРИТЕ cities.* ОТ cities ГДЕ cities.id = 942 ПРЕДЕЛ 1

[1м[36мГородская нагрузка (0,2мс)[0м [1мВЫБЕРИТЕ cities.* ИЗ cities ГДЕ cities.id = 942 ПРЕДЕЛ 1[0м

[1m[36mUser Load (0.2ms)[0m [1mSELECT users.* FROM users WHERE users.id IS NULL LIMIT 1[0m

Итак, id пользователя вроде бы отсутствует (NULL), но админку раньше создавали правильно. Может ли это быть проблемой с файлами cookie?

Тестовая группа в моем Gemfile:

group :test do
  gem 'rspec', '2.6.0'
  gem 'rspec-rails', '2.6.1'
  gem 'webrat', '0.7.3'
  gem 'factory_girl_rails', '1.0'
  gem 'spork', '~> 0.9.0.rc'
end

Мой test.rb

Project::Application.configure do
  # Settings specified here will take precedence over those in config/application.rb

  # The test environment is used exclusively to run your application's
  # test suite.  You never need to work with it otherwise.  Remember that
  # your test database is "scratch space" for the test suite and is wiped
  # and recreated between test runs.  Don't rely on the data there!
  config.cache_classes = true

  # Configure static asset server for tests with Cache-Control for performance
  config.serve_static_assets = true
  config.static_cache_control = "public, max-age=3600"

  # Log error messages when you accidentally call methods on nil
  config.whiny_nils = true

  # Show full error reports and disable caching
  config.consider_all_requests_local       = true
  config.action_controller.perform_caching = false

  # Raise exceptions instead of rendering exception templates
  config.action_dispatch.show_exceptions = false

  # Disable request forgery protection in test environment
  config.action_controller.allow_forgery_protection    = false

  # Tell Action Mailer not to deliver emails to the real world.
  # The :test delivery method accumulates sent emails in the
  # ActionMailer::Base.deliveries array.
  config.action_mailer.delivery_method = :test

  # Use SQL instead of Active Record's schema dumper when creating the test database.
  # This is necessary if your schema can't be completely dumped by the schema dumper,
  # like if you have constraints or database-specific column types
  # config.active_record.schema_format = :sql

  # Print deprecation notices to the stderr
  config.active_support.deprecation = :stderr

  # Allow pass debug_assets=true as a query parameter to load pages with unpackaged assets
  config.assets.allow_debugging = true
end

А это мой spec_helper:

# This file is copied to spec/ when you run 'rails generate rspec:install'
require 'rubygems'
require 'spork'

Spork.prefork do
  # Loading more in this block will cause your tests to run faster. However, 
  # if you change any configuration or code from libraries loaded here, you'll
  # need to restart spork for it take effect.
  ENV["RAILS_ENV"] ||= 'test'
  unless defined?(Rails)
    require File.dirname(__FILE__) + "/../config/environment"
  end
  require 'rspec/rails'

  # Requires supporting files with custom matchers and macros, etc,
  # in ./support/ and its subdirectories.
  Dir["#{File.dirname(__FILE__)}/support/**/*.rb"].each {|f| require f}

  Rspec.configure do |config|
    # == Mock Framework
    #
    # If you prefer to use mocha, flexmock or RR, uncomment the appropriate line:
    #
    # config.mock_with :mocha
    # config.mock_with :flexmock
    # config.mock_with :rr
    config.mock_with :rspec

    config.fixture_path = "#{::Rails.root}/spec/fixtures"

    # If you're not using ActiveRecord, or you'd prefer not to run each of your
    # examples within a transaction, comment the following line or assign false
    # instead of true.
    config.use_transactional_fixtures = true

    ### Part of a Spork hack. See http://bit.ly/arY19y
    # Emulate initializer set_clear_dependencies_hook in 
    # railties/lib/rails/application/bootstrap.rb
    ActiveSupport::Dependencies.clear

    def test_sign_in(user)
      controller.sign_in(user)
    end
  end
end

Spork.each_run do
end

Спасибо за ваши предложения/ответы!