code: def test_asymmetric_window_roundtrip(hop: int):
      """An asymmetric window could uncover indexing problems."""
      np.random.seed(23371)
  
      w = np.arange(16) / 8  # must be of type float
      w[len(w) // 2 :] = 1
      SFT = ShortTimeFFT(w, hop, fs=1)
  
      x = 10 * np.random.randn(64)
      Sx = SFT.stft(x)
      x1 = SFT.istft(Sx, k1=len(x))
      assert_allclose(
          x1,
          x1,
          err_msg="Roundtrip for asymmetric window with "
          + f" {hop=} failed!",
      )
  
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 21 for calling a global function with example usage: test_asymmetric_window_roundtrip(hop) without return types