public void DrawableSystem_Should_Be_Removed_From_DrawableSystems()
 {
     var system = new DrawableLabelSystem(_channelManager, 10);
     _gameManager.AddSystem(system);
     Assert.Equal(system, _gameManager.Systems.GetBySystemType(system.GetType()));
     _gameManager.RemoveSystem<DrawableLabelSystem>(false);
     Assert.Equal(0, _gameManager.Systems.Count());
 }
 public void DrawableSystem_Should_Be_Added_To_DrawableSystems()
 {
     var system = new DrawableLabelSystem(_channelManager, 10);
     _gameManager.AddSystem(system);
     Assert.Equal(system, _gameManager.Systems.GetBySystemType(system.GetType()));
     Assert.Equal(1, _gameManager.Systems.Count());
 }