code: def testZero(self):
      # strongpeak not defined when no peak exists
      self.assertEqual(StrongPeak()([0] * 100), 0)
  
file_path: essentia/test/src/unittests/spectral/test_strongpeak.py
imports: import math
  from essentia_test import *
label_desc: Use image node_id 6 for calling the TestStrongPeak obj's underlying member method code with example usage: obj.testZero() without return types