code: def testZero(self):
      self.assertEqualVector(FFT()(zeros(2048)), zeros(1025))
  
file_path: essentia/test/src/unittests/standard/test_fft.py
imports: from essentia_test import *
  import math
label_desc: Use image node_id 3 for calling the TestFFT obj's underlying member method code with example usage: obj.testZero() without return types