public function testChangeContainerDependencyInRuntime()
{
$container = new Container();
$container->set('DB', MySql::class);
$this->assertTrue($container->get('DB') instanceof MySql, 'Expecting MySql instance');
$container->set('DB', Postgres::class);
$this->assertTrue($container->get('DB') instanceof Postgres, 'Expecting Postgres instance');
}
