Correctly import NullCache class

lib/private/server.php

@@ -47,6 +47,7 @@ use OC\Lock\NoopLockingProvider;
 use OC\Mail\Mailer;
 use OC\Memcache\ArrayCache;
 use OC\Http\Client\ClientService;
+use OC\Memcache\NullCache;
 use OC\Security\CertificateManager;
 use OC\Files\Node\Root;
 use OC\Files\View;

tests/lib/server.php

@@ -0,0 +1,51 @@
+<?php
+/**
+ * @author Joas Schilling <nickvergessen@owncloud.com>
+ *
+ * @copyright Copyright (c) 2015, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace Test;
+
+class Server extends \Test\TestCase {
+	/** @var \OC\Server */
+	protected $server;
+
+
+	public function setUp() {
+		parent::setUp();
+		$this->server = new \OC\Server('');
+	}
+
+	public function dataTestQuery() {
+		return [
+			['NullCache', '\OC\Memcache\NullCache'],
+			['NullCache', '\OC\Memcache\Cache'],
+			['NullCache', '\OCP\IMemcache'],
+		];
+	}
+
+	/**
+	 * @dataProvider dataTestQuery
+	 *
+	 * @param string $serviceName
+	 * @param string $instanceOf
+	 */
+	public function testQuery($serviceName, $instanceOf) {
+		$this->assertInstanceOf($instanceOf, $this->server->query($serviceName), 'Service ' . $serviceName . ' did not return the right class');
+	}
+}