code: def test_smoke(self, device, dtype):
      points_2d = torch.zeros(1, 2, device=device, dtype=dtype)
      depth = torch.ones(1, 1, device=device, dtype=dtype)
      camera_matrix = torch.eye(3, device=device, dtype=dtype).expand(
          1, -1, -1
      )
      point_3d = kornia.geometry.camera.unproject_points(
          points_2d, depth, camera_matrix
      )
      assert point_3d.shape == (1, 3)
  
imports: import torch
  from torch.autograd import gradcheck
  import kornia
  from kornia.testing import assert_close, tensor_to_gradcheck_var
label_desc: Use image node_id 1 for calling the TestUnprojectPoints obj's underlying member method code with example usage: obj.test_smoke(device, dtype) without return types