test(cache): Exclude memcached for php 8.1 if memacached <= 3.1.5

Author: julienloizelet

tests/TestHelpers.php

@@ -45,18 +45,23 @@ public static function cacheAdapterProvider(): array
 
         $phpFilesAdapter = new PhpFilesAdapter('php_array_adapter_backup_cache', 0, self::PHP_FILES_CACHE_ADAPTER_DIR);
 
-        /** @var string */
-        $memcachedCacheAdapterDsn = getenv('MEMCACHED_DSN');
-        $memcachedAdapter = new MemcachedAdapter(MemcachedAdapter::createConnection($memcachedCacheAdapterDsn));
-
         /** @var string */
         $redisCacheAdapterDsn = getenv('REDIS_DSN');
         /** @var ClientInterface */
         $redisClient = RedisAdapter::createConnection($redisCacheAdapterDsn);
         $redisAdapter = new RedisAdapter($redisClient);
 
+        // memcached version 3.1.5 is not ready for PHP 8.1
+        if (PHP_VERSION_ID >= 80100 && version_compare(phpversion('memcached'), '3.1.5', '<=')) {
+            return [
+                'PhpFilesAdapter' => [$phpFilesAdapter],
+                'RedisAdapter' => [$redisAdapter],
+            ];
+        }
+        /** @var string */
+        $memcachedCacheAdapterDsn = getenv('MEMCACHED_DSN');
+        $memcachedAdapter = new MemcachedAdapter(MemcachedAdapter::createConnection($memcachedCacheAdapterDsn));
         return [
-            /*'FilesystemAdapter'  => [$fileSystemAdapter],*/
             'PhpFilesAdapter' => [$phpFilesAdapter],
             'RedisAdapter' => [$redisAdapter],
             'MemcachedAdapter' => [$memcachedAdapter],