code: def test_keep_or_kill(self):
      for _ in range(10):
          freq = random.uniform(0.01, 0.4)
          sr = 1024
          tone = pure_tone(freq * sr, sr=sr, dur=10)
  
          # For this test we accept 5% tolerance in amplitude, or -26dB in power.
          tol = 5
          zeros = 16
  
          y_pass = filters.bandpass_filter(
              tone, 0.9 * freq, 1.1 * freq, zeros=zeros
          )
          self.assertSimilar(
              y_pass, tone, tone, f"freq={freq}, pass", tol=tol
          )
  
          y_killed = filters.bandpass_filter(
              tone, 1.1 * freq, 1.2 * freq, zeros=zeros
          )
          self.assertSimilar(
              y_killed, 0 * tone, tone, f"freq={freq}, kill", tol=tol
          )
  
          y_killed = filters.bandpass_filter(
              tone, 0.8 * freq, 0.9 * freq, zeros=zeros
          )
          self.assertSimilar(
              y_killed, 0 * tone, tone, f"freq={freq}, kill", tol=tol
          )
  
imports: import random
  import unittest
  import torch
  from julius.core import pure_tone
  from julius import filters
label_desc: Use image node_id 2 for calling the TestBandPassFilters obj's underlying member method code with example usage: obj.test_keep_or_kill() without return types