code: def test_fft2(self, xp):
      x = xp.asarray(random((30, 20)) + 1j * random((30, 20)))
      expect = fft.fft(fft.fft(x, axis=1), axis=0)
      xp_assert_close(fft.fft2(x), expect)
      xp_assert_close(fft.fft2(x, norm="backward"), expect)
      xp_assert_close(
          fft.fft2(x, norm="ortho"),
          expect / xp.sqrt(xp.asarray(30 * 20, dtype=xp.float64)),
      )
      xp_assert_close(fft.fft2(x, norm="forward"), expect / (30 * 20))
  
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 4 for calling the TestFFT1D obj's underlying member method code with example usage: obj.test_fft2(xp) without return types