Correctly handle IP addresses containing RFC 4007 scoping

tests/Helpers/IPAnonymizerTest.php

@@ -0,0 +1,44 @@
+<?php
+/*
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ *  Copyright (C) 2019 - 2024 Jan Böhmer (https://github.com/jbtronics)
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace App\Tests\Helpers;
+
+use App\Helpers\IPAnonymizer;
+use PHPUnit\Framework\TestCase;
+
+class IPAnonymizerTest extends TestCase
+{
+
+    public function anonymizeDataProvider(): \Generator
+    {
+        yield ['127.0.0.0', '127.0.0.23'];
+        yield ['2001:0db8:85a3::', '2001:0db8:85a3:0000:0000:8a2e:0370:7334'];
+        //RFC 4007 format
+        yield ['fe80::', 'fe80::1fc4:15d8:78db:2319%enp4s0'];
+    }
+
+    /**
+     * @dataProvider anonymizeDataProvider
+     */
+    public function testAnonymize(string $expected, string $input): void
+    {
+        $this->assertSame($expected, IPAnonymizer::anonymize($input));
+    }
+}