add failing fixture zero offset, negative length

Author: samsonasik

rules-tests/DowngradePhp80/Rector/FuncCall/DowngradeSubstrFalsyRector/Fixture/with_zero_offset_length_negative.php.inc

@@ -0,0 +1,33 @@
+<?php
+
+namespace Rector\Tests\DowngradePhp80\Rector\FuncCall\DowngradeSubstrFalsyRector\Fixture;
+
+/**
+ * @see https://3v4l.org/lv13M#v7.4.33
+ */
+class WithZeroOffsetLengthNegative
+{
+    public function run(string $name)
+    {
+        return substr($name, 0, -1);
+    }
+}
+
+?>
+-----
+<?php
+
+namespace Rector\Tests\DowngradePhp80\Rector\FuncCall\DowngradeSubstrFalsyRector\Fixture;
+
+/**
+ * @see https://3v4l.org/lv13M#v7.4.33
+ */
+class WithZeroOffsetLengthNegative
+{
+    public function run(string $name)
+    {
+        return (string) substr($name, 0, -1);
+    }
+}
+
+?>