Possibility to use existing "db" instead opening new one

[zeecher]

I need option to use existing "db" connection. I'm using sqlite in-memory option in my unit tests, in-memory option is not shareable between apps. That's why i have to share my apps db connection with yarak. Here is my workaround in ConnectionResolver class

<?php

namespace Yarak\DB;

use Phalcon\Exception;
use Phalcon\Di;

class ConnectionResolver
{
    /**
     * Get connection to database.
     *
     * @param array $dbConfig
     *
     * @throws Exception
     *
     * @return \Phalcon\Db\Adapter\Pdo
     */
    public function getConnection(array $dbConfig)
    {

        $di = DI::getDefault();

        if($di->has('db'))
            return $di->getShared('db');

        $dbClass = sprintf('\Phalcon\Db\Adapter\Pdo\%s', $dbConfig['adapter']);

        if (!class_exists($dbClass)) {
            throw new Exception(
                sprintf('PDO adapter "%s" not found.', $dbClass)
            );
        }

        unset($dbConfig['adapter']);

        return new $dbClass($dbConfig);
    }
}