Rspec helper for http basic auth which works across feature, controller and request specs.

auth_helper.rb

module AuthHelper
  module Feature
    def basic_auth(login, password)
      if page.driver.respond_to?(:basic_auth)
        page.driver.basic_auth(login, password)
      elsif page.driver.respond_to?(:basic_authorize)
        page.driver.basic_authorize(login, password)
      elsif page.driver.respond_to?(:browser) && page.driver.browser.respond_to?(:basic_authorize)
        page.driver.browser.basic_authorize(login, password)
      else
        raise "Unknown auth method for #{page.driver}"
      end
    end
  end

  module PrivateHelpers
    def add_auth(env, login, password)
      env['HTTP_AUTHORIZATION'] = ActionController::HttpAuthentication::Basic.encode_credentials(login, password)
    end
  end

  module Controller
    include PrivateHelpers
    def basic_auth(login, password)
      add_auth(request.env, login, password)
    end
  end

  module RequestEnvHelper
    %i{delete delete_via_redirect get get_via_redirect head post post_via_redirect put put_via_redirect}.each do |method|
      define_method(method) do |path, parameters=nil, headers=nil|
        super(path, parameters, merge_env(headers))
      end
    end

    %i{request_via_redirect xml_http_request xhr}.each do |method|
      define_method(method) do |request_method, path, parameters=nil, headers=nil|
        super(request_method, path, parameters, merge_env(headers))
      end
    end

    def env
      @env ||= {}
    end

    private
    def merge_env(headers)
      (headers || {}).merge(env)
    end
  end

  module Request
    include PrivateHelpers
    include RequestEnvHelper

    def basic_auth(login, password)
      add_auth(env, login, password)
    end
  end
end

RSpec.configure do |config|
  config.include AuthHelper::Feature, :type => :feature
  config.include AuthHelper::Controller, :type => :controller
  config.include AuthHelper::Request, :type => :request
end