code: def test_ani_feat():
      """Test invoking ANIFeat."""
      batch_size = 10
      max_atoms = 5
      input = np.random.rand(batch_size, max_atoms, 4).astype(
          np.float32
      )
      layer = layers.ANIFeat(max_atoms=max_atoms)
      result = layer(input)
  
imports: import deepchem
  import numpy
  import pytest
  import os
label_desc: Use image node_id 23 for calling a global function with example usage: test_ani_feat() without return types