gistfile1.rb

  def authenticate
    return true if Rails.env.test?
    success = authenticate_or_request_with_http_digest do |user|
      ADMIN_CREDENTIALS[user]
    end
    # We have to explicitly check if success is true here because
    # auth_or_req_w_http_digest returns a string on authorization
    # failure (?!)
    session[:admin] ||= success
  end