simpletest_example_test.module

<?php
/**
 * @file
 * Implements simpletest_example_test module.
 */

/**
 * The mock module for SimpleTest Example.
 *
 * This module exists so that we can enable it and use it to
 * test elements of simpletest_module.
 *
 * @ingroup simpletest_example
 */

/**
 * Implements hook_node_view().
 *
 * We'll just add some content to nodes of the type we like.
 *
 * @ingroup simpletest_example
 */
function simpletest_example_test_node_view($node, $view_mode, $langcode) {
  if ($node->type == 'simpletest_example') {
    $node->content['simpletest_example_test_section'] = array(
      '#markup' => t('The test module did its thing.'),
      '#weight' => -99,
    );
  }
}