Validate IP address patterns when creating ip-address redirect conditions

module/Core/test/Util/IpAddressUtilsTest.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace ShlinkioTest\Shlink\Core\Util;
+
+use PHPUnit\Framework\Attributes\Test;
+use PHPUnit\Framework\Attributes\TestWith;
+use PHPUnit\Framework\TestCase;
+use Shlinkio\Shlink\Core\Util\IpAddressUtils;
+
+class IpAddressUtilsTest extends TestCase
+{
+    #[Test]
+    #[TestWith(['', false], 'empty')]
+    #[TestWith(['invalid', false], 'invalid')]
+    #[TestWith(['1.2.3.4', true], 'static IP')]
+    #[TestWith(['456.2.385.4', false], 'invalid IP')]
+    #[TestWith(['192.168.1.0/24', true], 'CIDR block')]
+    #[TestWith(['1.2.*.*', true], 'wildcard pattern')]
+    #[TestWith(['1.2.*.1', true], 'in-between wildcard pattern')]
+    public function isStaticIpCidrOrWildcardReturnsExpectedResult(string $candidate, bool $expected): void
+    {
+        self::assertEquals($expected, IpAddressUtils::isStaticIpCidrOrWildcard($candidate));
+    }
+}