materio-base-d7/sites/all/modules/contrib/ecommerce/ubercart/uc_cart/tests/uc_cart_entity_test.module

<?php

/**
 * Implements hook_uc_cart_item_insert().
 */
function uc_cart_entity_test_uc_cart_item_insert($entity) {
  drupal_set_message('hook_uc_cart_item_insert fired');
}

/**
 * Implements hook_uc_cart_item_update().
 */
function uc_cart_entity_test_uc_cart_item_update($entity) {
  drupal_set_message('hook_uc_cart_item_update fired');
}

/**
 * Implements hook_uc_cart_item_delete().
 */
function uc_cart_entity_test_uc_cart_item_delete($entity) {
  drupal_set_message('hook_uc_cart_item_delete fired');
}