Testing ApplicationController before_filter logic in Rails3

application_controller_test.rb

require 'test_helper'

class DummyController < ApplicationController
  def index
    render :nothing => true
  end
end

MyApp::Application.routes.disable_clear_and_finalize = true
MyApp::Application.routes.clear!
MyApp::Application.routes_reloader.paths.each { |path| load(path) }
MyApp::Application.routes.draw { match '/dummy' => "dummy#index" }
MyApp::Application.routes.finalize!

class ApplicationControllerTest < ActionController::TestCase
  tests DummyController

  setup do
    activate_authlogic
  end

  test "redirects you to the login page (for HTML requests)" do
    get :index
    assert_redirected_to :new_user_session
  end

  %W(xml json js).each do |format|
    test "forbids access for #{format}" do
      get :index, :format => format
      assert_response :forbidden
    end
  end

  %W(html xml json js).each do |format|
    test "forbids access for #{format} from ajax" do
      xhr :get, :index, :format => format
      assert_response :forbidden
    end
  end

  %W(html xml json js).each do |format|
    test "grants access for logged in users (#{format})" do
      UserSession.create(users(:bob))
      get :index, :format => format
      assert_response :success
      xhr :get, :index, :format => format
    end
  end
end

users.yml

bob:
  email: bob@example.com
  name: bob User
  password_salt: <%= salt = Authlogic::Random.hex_token %>
  crypted_password: <%= Authlogic::CryptoProviders::Sha512.encrypt("secret#{salt}") %>
  persistence_token: <%= Authlogic::Random.hex_token %>
  single_access_token: <%= Authlogic::Random.friendly_token %>
  perishable_token: <%= Authlogic::Random.friendly_token %>