public void LiftObjectsTest()
{
Spaceship spaceship = new Spaceship();
spaceship.X = 49;
spaceship.Width = 200;
GameObjectsManager manager = new GameObjectsManager(new Spaceship(), new Random());
manager.AddRandomObject();
manager.LiftObjects(spaceship);
manager.Update(new GameTime());
PrivateObject privateManager = new PrivateObject(manager);
List<LiftObject> liftObjects = (List<LiftObject>)privateManager.GetField("liftObjects");
Assert.IsTrue(liftObjects[0].Position.Y < 500);
}