1. copy over `/index.php` into `/autoloading_test.php`
2. in `/autoloading_test.php` file: replace all code that comes after `$application->Init();` line with:
```
lang=php
$column_set = new ColumnSet(array(
'order' => array(),
'hidden_fields' => array(),
'titles' => array(),
'widths' => array(),
));
$ckeditor = new CKEditor();
```
3. open `/autoloading_test.php` file from CLI or Web
4. confirm, that class instances were created and no error happened