public function skip() {
		$this->skipIf(!MongoDb::enabled(), 'The `MongoDb` class is not enabled.');

		$db = new MongoDb($this->_testConfig);
		$message = "`{$this->_testConfig['database']}` database or connection unavailable";
		$this->skipIf(!$db->isConnected(array('autoConnect' => true)), $message);
	}