code: def test_artificial_function_summary() -> None:
      func = functionlib.ArtificialFunction("sphere", 5)
      testing.assert_set_equal(
          func.descriptors.keys(), DESCRIPTION_KEYS
      )
      np.testing.assert_equal(
          func.descriptors["function_class"], "ArtificialFunction"
      )
  
imports: import typing
  import numpy
  import pytest
  from nevergrad.common import testing
  from nevergrad.parametrization import parameter
  from .None import functionlib
label_desc: Use image node_id 9 for calling a global function with example usage: test_artificial_function_summary() without return types