require 'krb5_auth' include Krb5Auth module Devise module KerberosAdapter def self.valid_credentials?(username, password) if Rails.env.test? && username == 'test' && password == 'test' then return true end krb5 = Krb5.new begin krb5.get_init_creds_password(username, password) rescue Krb5Auth::Krb5::Exception return false end return true end end end