code: def test_log_solubility_dataset():
      """Test of loading for simple log-solubility dataset."""
      current_dir = os.path.dirname(os.path.realpath(__file__))
      input_file = "../../models/tests/assets/example.csv"
      input_file = os.path.join(current_dir, input_file)
  
      tasks = ["log-solubility"]
      loader = dc.data.CSVLoader(
          tasks=tasks,
          feature_field="smiles",
          featurizer=dc.feat.CircularFingerprint(size=1024),
      )
      dataset = loader.create_dataset(input_file)
  
      assert len(dataset) == 10
  
file_path: deepchem/deepchem/data/tests/test_data_loader.py
imports: import os
  import tempfile
  import shutil
  import deepchem
label_desc: Use image node_id 6 for calling a global function with example usage: test_log_solubility_dataset() without return types