code: def test_stft_padding_roundtrip(
      window, N: int, nperseg: int, noverlap: int, mfft: int, padding
  ):
      """Test the parameter 'padding' of `stft` with roundtrips.
  
      The STFT parametrizations were taken from the methods
      `test_roundtrip_padded_FFT`, `test_roundtrip_padded_signal` and
      `test_roundtrip_boundary_extension` from class `TestSTFT` in  file
      ``test_spectral.py``. Note that the ShortTimeFFT does not need the
      concept of "boundary extension".
      """
      x = normal_distribution.rvs(
          size=N, random_state=2909
      )  # real signal
      z = x * np.exp(1j * np.pi / 4)  # complex signal
  
      SFT = ShortTimeFFT.from_window(
          window, 1, nperseg, noverlap, fft_mode="twosided", mfft=mfft
      )
      Sx = SFT.stft(x, padding=padding)
      x1 = SFT.istft(Sx, k1=N)
      assert_allclose(
          x1,
          x,
          err_msg=f"Failed real roundtrip with '{padding}' padding",
      )
  
      Sz = SFT.stft(z, padding=padding)
      z1 = SFT.istft(Sz, k1=N)
      assert_allclose(
          z1,
          z,
          err_msg="Failed complex roundtrip with "
          + f" '{padding}' padding",
      )
  
imports: import math
  from itertools import product
  from typing import cast, get_args, Literal
  import numpy
  import pytest
  from numpy.testing import assert_allclose, assert_equal
  from scipy.fft import fftshift
  from scipy.stats import norm
  from scipy.signal import get_window, welch, stft, istft, spectrogram
  from scipy.signal._short_time_fft import FFT_MODE_TYPE, _calc_dual_canonical_window, ShortTimeFFT, PAD_TYPE
  from scipy.signal.windows import gaussian
label_desc: Use image node_id 30 for calling a global function with example usage: test_stft_padding_roundtrip(window, N, nperseg, noverlap, mfft, padding) without return types