code: def test_fft_nofft(self):
      for _ in range(10):
          x = th.randn(1024)
          freq = random.uniform(0.01, 0.5)
          freq2 = random.uniform(freq, 0.5)
          y_fft = filters.bandpass_filter(x, freq, freq2, fft=True)
          y_ref = filters.bandpass_filter(x, freq, freq2, fft=False)
          self.assertSimilar(y_fft, y_ref, x, f"freq={freq}", tol=0.01)
  
imports: import random
  import unittest
  import torch
  from julius.core import pure_tone
  from julius import filters
label_desc: Use image node_id 3 for calling the TestBandPassFilters obj's underlying member method code with example usage: obj.test_fft_nofft() without return types