code: def test_safenorm():
      from deepchem.utils.safeops_utils import safenorm
  
      a = torch.tensor([1e-35, 2e-40])
      result = safenorm(a, 0)
      assert torch.allclose(torch.tensor(1.4142e-15), result)
      assert torch.allclose(torch.tensor(1.4142e-15), a.norm())
  
imports: import pytest
label_desc: Use image node_id 2 for calling a global function with example usage: test_safenorm() without return types