将自定义标题从水豚传递到Selenium

# in hooks.rb
Before do

  require \'capybara/driver/rack_test_driver\'
  module Capybara::Driver
    class Authentic < RackTest
      def env
        super.merge(\'My-Custom-Header\' => \"foo\")
      end
    end
  end

  Capybara.register_driver(:authentic) do |app|
    Capybara::Driver::Authentic.new(app)
  end

  Capybara.default_driver = :authentic
end

#in the controller    
class ApplicationController < ActionController::Base
  before_filter :authenticate

  def authenticate
    render :file => File.join(Rails.root, \"public\", \"403.html\") unless request.env.keys.include?(\'foo\')
  end
end

Feature: Authentication
  Valid users should be authenticated.
  Invalid users should be redirected to the login page.

  Scenario: Authorized
    Given I am on the homepage
    Then I should see \"Create a New Research Project\"

  @rack_test
  Scenario: Unauthorized
    Given I go to the homepage
    Then I should see \"You are not authorized to view this page.\"