code: def test_stockwell_st_no_zero_pad():
      """Test stockwell power itc."""
      data = np.zeros((20, 128))
      start_f = 1
      stop_f = 10
      sfreq = 30
      width = 2
      W = _precompute_st_windows(
          data.shape[-1], start_f, stop_f, sfreq, width
      )
      _st_power_itc(data, 10, True, 0, 1, W)
  
file_path: mne-python/mne/time_frequency/tests/test_stockwell.py
imports: from pathlib import Path
  import numpy
  import pytest
  from numpy.testing import assert_allclose, assert_array_almost_equal, assert_array_less, assert_equal
  from scipy import fftpack
  from mne import Epochs, make_fixed_length_events, read_events
  from mne.io import read_raw_fif
  from mne.time_frequency import AverageTFR, tfr_array_stockwell
  from mne.time_frequency._stockwell import _check_input_st, _precompute_st_windows, _st, _st_power_itc, tfr_stockwell
  from mne.utils import _record_warnings
label_desc: Use image node_id 3 for calling a global function with example usage: test_stockwell_st_no_zero_pad() without return types