use custom fonts in mpdf via twig template (#3509)

tests/Mocks/FileHelperFactory.php

@@ -0,0 +1,22 @@
+<?php
+
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\Tests\Mocks;
+
+use App\Utils\FileHelper;
+
+class FileHelperFactory extends AbstractMockFactory
+{
+    public function create(): FileHelper
+    {
+        $data = realpath(__DIR__ . '/../../var/data/');
+
+        return new FileHelper($data);
+    }
+}