code: def testZero(self):
      # Inputting zeros should return no onsets(empty array)
      audio = zeros(44100 * 5)
      onset_beat_emphasis = OnsetDetectionGlobal(method="beat_emphasis")
      onset_infogain = OnsetDetectionGlobal(method="infogain")
      self.assertEqualVector(onset_beat_emphasis(audio), zeros(428))
      self.assertEqualVector(onset_infogain(audio), zeros(428))
  
file_path: essentia/test/src/unittests/rhythm/test_onsetdetectionglobal.py
imports: from numpy import *
  from essentia_test import *
  from essentia.standard import MonoLoader, OnsetDetectionGlobal
label_desc: Use image node_id 1 for calling the TestOnsetDetectionGlobal obj's underlying member method code with example usage: obj.testZero() without return types