code: def test_exception(self):
      # input should be a tensor
      with pytest.raises(Exception) as errinfo:
          gaussian_blur2d(1, 3, (1.0, 1.0))
      assert "Not a Tensor type. Go" in str(errinfo)
  
      # Sigma should be a tuple or a tensor
      with pytest.raises(Exception) as errinfo:
          gaussian_blur2d(torch.rand(1, 1, 1, 1), 3, 1.0)
      assert "Not a Tensor type. Go" in str(errinfo)
  
imports: import pytest
  import torch
  from kornia.filters import GaussianBlur2d, gaussian_blur2d, get_gaussian_discrete_kernel1d, get_gaussian_erf_kernel1d, get_gaussian_kernel1d, get_gaussian_kernel2d, get_gaussian_kernel3d
  from kornia.testing import BaseTester, assert_close, tensor_to_gradcheck_var
label_desc: Use image node_id 3 for calling the TestGaussianBlur2d obj's underlying member method code with example usage: obj.test_exception() without return types