From b8bc80df6889af71d1e00a369cd3a4fd2d13cb20 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andreas=20M=C3=B6ller?= <am@localheinz.com>
Date: Tue, 8 Mar 2022 11:50:50 +0100
Subject: [PATCH] Fix: Use strpos

---
 test/Unit/RuleSet/ExplicitRuleSetTestCase.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/Unit/RuleSet/ExplicitRuleSetTestCase.php b/test/Unit/RuleSet/ExplicitRuleSetTestCase.php
index 64b976c4..be9839cf 100644
--- a/test/Unit/RuleSet/ExplicitRuleSetTestCase.php
+++ b/test/Unit/RuleSet/ExplicitRuleSetTestCase.php
@@ -36,7 +36,7 @@ final public function testRuleSetDoesNotConfigureRuleSets(): void
         $rulesWithoutRulesForRuleSets = \array_filter(
             $rules,
             static function (string $nameOfRule): bool {
-                return '@' !== \mb_substr($nameOfRule, 0, 1);
+                return \mb_strpos($nameOfRule, '@') !== 0;
             },
             \ARRAY_FILTER_USE_KEY,
         );