add test for skip all strings in array_map()

Author: samsonasik

rules-tests/Php81/Rector/FuncCall/NullToStrictStringFuncCallArgRector/Fixture/skip_array_of_strings_on_array_map.php.inc

@@ -0,0 +1,19 @@
+<?php
+
+namespace Rector\Tests\Php81\Rector\FuncCall\NullToStrictStringFuncCallArgRector\Fixture;
+
+final class SkipArrayOfStringsOnArrayMap
+{
+    public function foo(string $name)
+    {
+        $parts = explode('_', $name);
+        return implode(
+            '',
+            array_map(
+                fn ($part): string =>
+                strtolower($part),
+                $parts
+            )
+        );
+    }
+}