public function _before()
{
parent::_before();
$this->connection = new Mysql(['host' => TEST_DB_MYSQL_HOST, 'username' => TEST_DB_MYSQL_USER, 'password' => TEST_DB_MYSQL_PASSWD, 'dbname' => TEST_DB_MYSQL_NAME, 'port' => TEST_DB_MYSQL_PORT, 'charset' => TEST_DB_MYSQL_CHARSET]);
}