code: def test_pad_sample_indices_boundaries(self):
      start_sample, end_sample = pad_sample_indices(
          start_sample=100,
          end_sample=1000,
          max_sample=1150,
          sample_rate=100,
          pad_seconds=2,
      )
      assert start_sample == 0
      assert end_sample == 1150
  
imports: import numpy
  import pytest
  from nemo.collections.tts.parts.preprocessing.audio_trimming import get_start_and_end_of_speech_frames, pad_sample_indices
label_desc: Use image node_id 4 for calling the TestAudioTrimming obj's underlying member method code with example usage: obj.test_pad_sample_indices_boundaries() without return types