LazyRecord\ConfigLoader::getDefaultDataSourceId PHP Method

    public function getDefaultDataSourceId()
    {
        if (isset($this->config['data_source']['default'])) {
            return $this->config['data_source']['default'];
        }
        return 'default';
    }

 public function testLoadFromSymbol()
 {
     $config = new ConfigLoader();
     $config->loadFromSymbol(true);
     $config->setDefaultDataSourceId('mysql');
     $this->assertEquals('mysql', $config->getDefaultDataSourceId());
 }