🛀 output (+test) simplification & cleanup

tests/Output/QRStringTestAbstract.php

@@ -0,0 +1,22 @@
+<?php
+/**
+ * Class QRStringTestAbstract
+ *
+ * @created      24.12.2017
+ * @author       Smiley <smiley@chillerlan.net>
+ * @copyright    2017 Smiley
+ * @license      MIT
+ */
+
+namespace chillerlan\QRCodeTest\Output;
+
+use chillerlan\QRCode\Output\QRString;
+
+/**
+ * Tests the QRString output module
+ */
+abstract class QRStringTestAbstract extends QROutputTestAbstract{
+
+	protected string $FQN  = QRString::class;
+
+}