code: def testWhichSet(self):
      self.assertEqual(
          input_data.which_set("foo.wav", 10, 10),
          input_data.which_set("foo.wav", 10, 10),
      )
      self.assertEqual(
          input_data.which_set("foo_nohash_0.wav", 10, 10),
          input_data.which_set("foo_nohash_1.wav", 10, 10),
      )
  
imports: import os
  import numpy
  import tensorflow
  from tensorflow.examples.speech_commands import input_data
  from tensorflow.examples.speech_commands import models
  from tensorflow.python.framework import test_util
  from tensorflow.python.platform import test
label_desc: Use image node_id 7 for calling the InputDataTest obj's underlying member method code with example usage: obj.testWhichSet() without return types