another force test

lib.php

@@ -128,6 +128,7 @@ function adleradaptivity_delete_instance(int $instance_id): bool {
         // - postgresql databases are not rolled back
         // - course deletion succeeds without indication of an error
         // - only module deletion behaves as expected and shows an error
+        $DB->force_transaction_rollback();
         $transaction->rollback($e);
     }
 

tests/lib_test.php

@@ -176,12 +176,8 @@ public function test_delete_instance_failure_due_to_question_deletion_failure()
         try {
             // Try to delete the complex instance.
             adleradaptivity_delete_instance($complex_adleradaptivity_module['module']->id);
-        } catch (Exception $e) {
-            // Roll back the transaction before re-throwing the exception
-            $DB->force_transaction_rollback();
-            throw $e;
         } finally {
-//            sleep(60);
+            sleep(60);
             // Ensure that no instances were deleted.
             $this->assertCount(1, $DB->get_records('adleradaptivity'));
             $this->assertCount(2, $DB->get_records('adleradaptivity_tasks'));