code: def test_fft_function():
      # Historically, scipy.fft was an alias for numpy.fft.fft
      # Ensure there are no conflicts with the FFT module (gh-10253)
  
      # Test must run in a subprocess so scipy.fft is not already imported
      subprocess.check_call([sys.executable, "-c", TEST_BODY])
  
      # scipy.fft is the correct module
      from scipy import fft
  
      assert not callable(fft)
      assert fft.__name__ == "scipy.fft"
  
      from scipy import ifft
  
      assert ifft.__wrapped__ is np.fft.ifft
  
imports: import numpy
  import subprocess
  import sys
  import pytest
label_desc: Use image node_id 1 for calling a global function with example usage: test_fft_function() without return types