public function testGeneral()
{
$manager = new DbManager();
$manager->getConfig();
$origin = $manager->getDefaultDriverName();
$manager->setDefaultDriverName('another_driver');
$this->assertEquals($manager->getDefaultDriverName(), 'another_driver');
$manager->setDefaultDriverName($origin);
$this->assertNotEmpty($manager->getConfig());
$manager->getMaster();
$manager->getSlave();
$origin = $manager->getPrefix();
$manager->setPrefix('another_prefix');
$this->assertEquals($manager->getPrefix(), 'another_prefix');
$manager->setPrefix($origin);
}