code: def test_tempo_intensity(self):
      intensity = audaugs.tempo_intensity(metadata={}, factor=0.5)
      self.assertAlmostEqual(intensity, 20.0)
  
imports: import unittest
  import numpy
  from augly import audio
label_desc: Use image node_id 18 for calling the IntensityAudioUnitTest obj's underlying member method code with example usage: obj.test_tempo_intensity() without return types