code: def testEmpty(self):
      emptyAudio = []
      self.assertRaises(
          RuntimeError, lambda: PercivalBpmEstimator()(emptyAudio)
      )
  
file_path: essentia/test/src/unittests/rhythm/test_percivalbpmestimator.py
imports: from essentia_test import *
  from essentia.standard import MonoLoader, PercivalBpmEstimator
label_desc: Use image node_id 5 for calling the TestPercivalBpmEstimator obj's underlying member method code with example usage: obj.testEmpty() without return types