code: def testNegatives(self):
      # strongpeak ratio not defined for negative spectrums
      self.assertComputeFails(StrongPeak(), [-10] * 50 + [10] * 50)
  
file_path: essentia/test/src/unittests/spectral/test_strongpeak.py
imports: import math
  from essentia_test import *
label_desc: Use image node_id 5 for calling the TestStrongPeak obj's underlying member method code with example usage: obj.testNegatives() without return types