code: def test_ifft(self, xp):
      a = xp.full(self.input_shape, 1 + 0j)
      self._test_mtsame(fft.ifft, a, xp=xp)
  
imports: import queue
  import threading
  import multiprocessing
  import numpy
  import pytest
  from numpy.random import random
  from numpy.testing import assert_array_almost_equal, assert_allclose
  from pytest import raises
  import scipy.fft
  from scipy.conftest import array_api_compatible, skip_if_array_api_backend
  from scipy._lib._array_api import array_namespace, size, xp_assert_close, xp_assert_equal
label_desc: Use image node_id 3 for calling the TestFFTThreadSafe obj's underlying member method code with example usage: obj.test_ifft(xp) without return types