From 4070b12ea90b947ae3acc6ffaf35e29585225acf Mon Sep 17 00:00:00 2001
From: Anton Vasiliev <aionbase@gmail.com>
Date: Sat, 11 Sep 2021 22:04:30 +0100
Subject: [PATCH] #2255 - Fix `IsPhpVersionTest` test for PHP8.1

---
 tests/Extension/Optimizers/IsPhpVersionTest.php | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/tests/Extension/Optimizers/IsPhpVersionTest.php b/tests/Extension/Optimizers/IsPhpVersionTest.php
index 72467c7cef..c16c816b73 100644
--- a/tests/Extension/Optimizers/IsPhpVersionTest.php
+++ b/tests/Extension/Optimizers/IsPhpVersionTest.php
@@ -85,12 +85,15 @@ public function testOptimizerExceptionNegativeNumber(): void
         $this->isPhpVersion(-7);
     }
 
-    public function testOptimizerExceptionNull(): void
+    public function testOptimizerExceptionEmpty(): void
     {
         $this->expectException(Exception::class);
         $this->expectExceptionMessage('Could not parse PHP version');
 
-        $this->isPhpVersion(null);
+        /**
+         * After PHP8.1 it is impossible to pass null value to preg_match()
+         */
+        $this->isPhpVersion('');
     }
 
     public function testZephirUsingInteger70000(): void