public function setUp()
{
$config = $this->getT4ConnectionConfig();
$this->connection = new \Pdo('mysql:dbname=' . $config->dbname . ';host=' . $config->host . '', $config->user, $config->password);
$this->connection->query('DROP TABLE comments');
$this->connection->query('DROP TABLE __migrations');
$migration = new mTestMigration();
$migration->setDb($this->getT4Connection());
$migration->up();
CommentTestModel::setConnection($this->getT4Connection());
}