code: def test_scale_norm():
      """Test invoking ScaleNorm."""
      input_ar = torch.tensor(
          [[1.0, 99.0, 10000.0], [0.003, 999.37, 23.0]]
      )
      layer = torch_layers.ScaleNorm(0.35)
      result1 = layer(input_ar)
      output_ar = torch.tensor(
          [
              [5.9157897e-05, 5.8566318e-03, 5.9157896e-01],
              [1.7754727e-06, 5.9145141e-01, 1.3611957e-02],
          ]
      )
      assert torch.allclose(result1, output_ar)
  
imports: import deepchem
  import numpy
  import pytest
  import os
label_desc: Use image node_id 28 for calling a global function with example usage: test_scale_norm() without return types