materio-base-d7/modules/simpletest/tests/ajax_test.module

<?php

/**
 * @file
 * Helper module for Ajax framework tests.
 */

/**
 * Implements hook_menu().
 */
function ajax_test_menu() {
  $items['ajax-test/render'] = array(
    'title' => 'ajax_render',
    'page callback' => 'ajax_test_render',
    'delivery callback' => 'ajax_deliver',
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
  );
  $items['ajax-test/render-error'] = array(
    'title' => 'ajax_render_error',
    'page callback' => 'ajax_test_error',
    'delivery callback' => 'ajax_deliver',
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
  );
  $items['ajax-test/link'] = array(
    'title' => 'AJAX Link',
    'page callback' => 'ajax_test_link',
    'access callback' => TRUE,
  );
  return $items;
}

/**
 * Implements hook_system_theme_info().
 */
function ajax_test_system_theme_info() {
  $themes['test_theme'] = drupal_get_path('module', 'ajax_test') . '/themes/test_theme/test_theme.info';
  return $themes;
}

/**
 * Menu callback; Return an element suitable for use by ajax_deliver().
 *
 * Additionally ensures that ajax_render() incorporates JavaScript settings
 * generated during the page request by invoking drupal_add_js() with a dummy
 * setting.
 */
function ajax_test_render() {
  drupal_add_js(array('ajax' => 'test'), 'setting');
  return array('#type' => 'ajax', '#commands' => array());
}

/**
 * Menu callback; Returns Ajax element with #error property set.
 */
function ajax_test_error() {
  $message = '';
  if (!empty($_GET['message'])) {
    $message = $_GET['message'];
  }
  return array('#type' => 'ajax', '#error' => $message);
}

/**
 * Menu callback; Renders a #type link with #ajax.
 */
function ajax_test_link() {
  $build['link'] = array(
    '#type' => 'link',
    '#title' => 'Show help',
    '#href' => 'filter/tips',
    '#ajax' => array(
      'wrapper' => 'block-system-main',
    ),
  );
  return $build;
}