class_docstr: Tests for SmilesToImage featurizers.
class_docstr_tok: ["Tests","for","SmilesToImage","featurizers","."]
docstr: Test default SmilesToImage
docstr_tok: ["Test","default","SmilesToImage"]
code: def test_smiles_to_image(self):
      """Test default SmilesToImage"""
      featurizer = SmilesToImage()
      features = featurizer.featurize(self.smiles)
      assert features.shape == (2, 80, 80, 1)
  
file_path: deepchem/deepchem/feat/tests/test_smiles_featurizers.py
imports: import os
  import unittest
  import numpy
  from deepchem.feat import create_char_to_idx, SmilesToSeq, SmilesToImage
label_desc: Use image node_id 2 for calling the TestSmilesToImage obj's underlying member method code with example usage: obj.test_smiles_to_image() without return types