code: def test_constant(self):
      x = th.ones(4096)
      for zeros in [4, 10]:
          for old_sr in [1, 4, 10]:
              for new_sr in [1, 4, 10]:
                  y_low = resample.resample_frac(
                      x, old_sr, new_sr, zeros=zeros
                  )
                  self.assertLessEqual(
                      (y_low - 1).abs().mean(),
                      1e-6,
                      (zeros, old_sr, new_sr),
                  )
  
imports: import os
  import tempfile
  import uuid
  from pathlib import Path
  import math
  import random
  import unittest
  import resampy
  import torch
  from julius import resample, ResampleFrac
label_desc: Use image node_id 4 for calling the TestResampleFrac obj's underlying member method code with example usage: obj.test_constant() without return types