code: def test_model_user_validation_no_valid_model(self):
      with pytest.raises(
          ValueError,
          match="should provide either a trained model or the path to a model",
      ):
          dice_ml.Model(backend="sklearn")
  
file_path: DiCE/tests/test_model.py
imports: import pytest
  from rai_test_utils.datasets.tabular import create_iris_data
  from raiutils.exceptions import UserConfigValidationException
  from sklearn.ensemble import RandomForestClassifier
  import dice_ml
  from dice_ml.utils import helpers
label_desc: Use image node_id 3 for calling the TestModelUserValidations obj's underlying member method code with example usage: obj.test_model_user_validation_no_valid_model() without return types