code: def test_hfft(self):
      x = random(14) + 1j * random(14)
      x_herm = np.concatenate((random(1), x, random(1)))
      x = np.concatenate((x_herm, x[::-1].conj()))
      expect = fft.fft(x)
      assert_array_almost_equal(expect, fft.hfft(x_herm))
      assert_array_almost_equal(
          expect, fft.hfft(x_herm, norm="backward")
      )
      assert_array_almost_equal(
          expect / np.sqrt(30), fft.hfft(x_herm, norm="ortho")
      )
      assert_array_almost_equal(
          expect / 30, fft.hfft(x_herm, norm="forward")
      )
  
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_array_equal, assert_allclose
  from pytest import raises
  import scipy.fft
label_desc: Use image node_id 14 for calling the TestFFT1D obj's underlying member method code with example usage: obj.test_hfft() without return types