<?php
// $Id$

/**
 * Implements hook_permission().
 */
function module_test_permission() {
  return array(
    'module_test perm' => t('example perm for module_test module'),
  );
}

/**
 * Implements hook_system_info_alter().
 *
 * Manipulate module dependencies to test dependency chains.
 */
function module_test_system_info_alter(&$info, $file, $type) {
  if (variable_get('dependency_test', FALSE) == 'missing dependency') {
    if ($file->name == 'forum') {
      // Make forum module depend on poll.
      $info['dependencies'][] = 'poll';
    }
    elseif ($file->name == 'poll') {
      // Make poll depend on a made-up module.
      $info['dependencies'][] = 'foo';
    }
  }
  elseif (variable_get('dependency_test', FALSE) == 'dependency') {
    if ($file->name == 'forum') {
      // Make the forum module depend on poll.
      $info['dependencies'][] = 'poll';
    }
    elseif ($file->name == 'poll') {
      // Make poll depend on php module.
      $info['dependencies'][] = 'php';
    }
  }
}

/**
 * Implements hook_hook_info().
 */
function module_test_hook_info() {
  $hooks['test_hook'] = array(
    'group' => 'file',
  );
  return $hooks;
}
