code: def testEmpty(self):
      # Verifies that an exception is thrown when given an empty input
      self.assertComputeFails(ReplayGain(sampleRate=44100), [])
  
imports: from essentia_test import *
label_desc: Use image node_id 2 for calling the TestReplayGain obj's underlying member method code with example usage: obj.testEmpty() without return types