materio-base-d7/sites/all/modules/contrib/flag/flag/tests/flag_comment_flag_test/flag_comment_flag_test.module

<?php

/**
 * @file flag_comment_flag_test.module
 * Test module for comment flags.
 */

/**
 * Implements hook_comment_load().
 *
 * This is only called once when viewing a node with comments, and before
 * hook_entity_view() is invoked. We use this to check the initial state of the
 * cache.
 */
function flag_comment_flag_test_comment_load($comments) {
  $flag_get_user_flags_cache = drupal_static('flag_get_user_flags');

  // Store the value of the flag_get_user_flags() static cache in the variable,
  // so the test can retrieve it.
  $tracking_variable = variable_get('flag_comment_flag_test_user_flags_cache_tracking', array());
  $tracking_variable['hook_comment_load'] = $flag_get_user_flags_cache;
  variable_set('flag_comment_flag_test_user_flags_cache_tracking', $tracking_variable);
}

/**
 * Implements hook_entity_view().
 *
 * Use hook_entity_view() rather than hook_comment_view() so we are in the same
 * invocation as flag_entity_view().
 */
function flag_comment_flag_test_entity_view($entity, $type, $view_mode, $langcode) {
  if ($type == 'comment') {
    $flag_get_user_flags_cache = drupal_static('flag_get_user_flags');

    // Store the value of the flag_get_user_flags() static cache in the variable,
    // so the test can retrieve it.
    $tracking_variable = variable_get('flag_comment_flag_test_user_flags_cache_tracking', array());
    $tracking_variable['hook_entity_view_' . $entity->cid] = $flag_get_user_flags_cache;
    variable_set('flag_comment_flag_test_user_flags_cache_tracking', $tracking_variable);
  }
}