class_docstr: Tests for SmilesToImage featurizers.
class_docstr_tok: ["Tests","for","SmilesToImage","featurizers","."]
docstr: Setup.
docstr_tok: ["Setup","."]
code: def setUp(self):
      """Setup."""
      self.smiles = [
          "Cn1c(=O)c2c(ncn2C)n(C)c1=O",
          "CC(=O)N1CN(C(C)=O)C(O)C1O",
      ]
      self.long_molecule_smiles = [
          "CCCCCCCCCCCCCCCCCCCC(=O)OCCCNC(=O)c1ccccc1SSc1ccccc1C(=O)NCCCOC(=O)CCCCCCCCCCCCCCCCCCC"
      ]
  
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 1 for calling the TestSmilesToImage obj's underlying member method code with example usage: obj.setUp() without return types