code: def testSilence(self):
      audio = [0] * (44100 * 10)  # 10 sec silence
      self.assertEqual(Intensity()(audio), -1)
  
imports: from essentia_test import *
label_desc: Use image node_id 2 for calling the TestIntensity obj's underlying member method code with example usage: obj.testSilence() without return types