[ticket/16223] Add test for memcached driver

PHPBB3-16223

tests/cache/memcached_test.php

@@ -0,0 +1,46 @@
+<?php
+/**
+ *
+ * This file is part of the phpBB Forum Software package.
+ *
+ * @copyright (c) phpBB Limited <https://www.phpbb.com>
+ * @license GNU General Public License, version 2 (GPL-2.0)
+ *
+ * For full copyright and license information, please see
+ * the docs/CREDITS.txt file.
+ *
+ */
+
+require_once dirname(__FILE__) . '/common_test_case.php';
+
+class phpbb_cache_memcached_driver_test extends \phpbb_cache_common_test_case
+{
+	protected static $config;
+
+	public function getDataSet()
+	{
+		return $this->createXMLDataSet(dirname(__FILE__) . '/fixtures/config.xml');
+	}
+
+	static public function setUpBeforeClass()
+	{
+		if (!extension_loaded('memcached'))
+		{
+			self::markTestSkipped('memcached extension is not loaded');
+		}
+
+		parent::setUpBeforeClass();
+	}
+
+	protected function setUp(): void
+	{
+		global $phpbb_root_path, $phpbb_container;
+
+		parent::setUp();
+
+		$phpbb_container = new phpbb_mock_container_builder();
+		$phpbb_container->setParameter('core.cache_dir', $phpbb_root_path . 'cache/' . PHPBB_ENVIRONMENT . '/');
+		$this->driver = new \phpbb\cache\driver\memcached();
+		$this->driver->purge();
+	}
+}