materio-base-d7/modules/openid/tests/openid_test.install

<?php

/**
 * @file
 * Install, update and uninstall functions for the openid_test module.
 */

/**
 * Implements hook_install().
 */
function openid_test_install() {
  module_load_include('inc', 'openid');
  // Generate a MAC key (Message Authentication Code) used for signing messages.
  // The variable is base64-encoded, because variables cannot contain non-UTF-8
  // data.
  variable_set('openid_test_mac_key', drupal_random_key(20));
}