public function testMailConfig($type)
{
$container = $this->loadContainerFromFile('mail', $type);
$this->assertEquals('swiftmailer.mailer.default.transport', (string) $container->getAlias('swiftmailer.transport'));
$this->assertEquals('swiftmailer.mailer.default.transport.mail', (string) $container->getAlias('swiftmailer.mailer.default.transport'));
}