MDL-81520 core: Fix test finality

course/tests/modlib_test.php

@@ -18,12 +18,6 @@ namespace core_course;
 
 use core_courseformat\formatactions;
 
-defined('MOODLE_INTERNAL') || die();
-
-global $CFG;
-require_once($CFG->dirroot . '/course/lib.php');
-require_once($CFG->dirroot . '/course/modlib.php');
-
 /**
  * Module lib related unit tests
  *
@@ -32,7 +26,16 @@ require_once($CFG->dirroot . '/course/modlib.php');
  * @copyright  2016 Juan Leyva
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
-class modlib_test extends \advanced_testcase {
+final class modlib_test extends \advanced_testcase {
+    /**
+     * Setup to ensure that fixtures are loaded.
+     */
+    public static function setUpBeforeClass(): void {
+        global $CFG;
+        require_once($CFG->dirroot . '/course/lib.php');
+        require_once($CFG->dirroot . '/course/modlib.php');
+        parent::setUpBeforeClass();
+    }
 
     /**
      * Test prepare_new_moduleinfo_data