code: def test_ContinuousSelector_4():
      """Assert that ContinuousSelector rasies ValueError without categorical features."""
      cs = ContinuousSelector()
  
      assert_raises(ValueError, cs.transform, iris_data[0:10, :])
  
file_path: tpot/tests/feature_transformers_tests.py
imports: from sklearn.datasets import load_iris
  from tpot.builtins import CategoricalSelector, ContinuousSelector
  from nose.tools import assert_equal, assert_raises
label_desc: Use image node_id 9 for calling a global function with example usage: test_ContinuousSelector_4() without return types