code: def test_simple_numpy_func_wrapper(dummy_data):
      def sum_func(sig: np.ndarray) -> float:
          return sum(sig)
  
      np_func = FuncWrapper(sum_func)
  
      assert np_func.output_names == ["sum_func"]
      assert np.isclose(
          np_func(dummy_data["EDA"]), dummy_data["EDA"].sum()
      )
  
file_path: tsflex/tests/test_features_func_wrapper.py
imports: import functools
  from typing import Tuple
  import numpy
  import pandas
  import pytest
  from tsflex.features import FuncWrapper
  from .utils import dummy_data
label_desc: Use image node_id 1 for calling a global function with example usage: test_simple_numpy_func_wrapper(dummy_data) and returns: sum