code: def testEmpty(self):
      with self.assertRaises(EssentiaException):
          Entropy()(np.empty(0, dtype=np.single))
  
file_path: essentia/test/src/unittests/stats/test_entropy.py
imports: import os.path
  import random
  from essentia_test import *
  import numpy
  import math
label_desc: Use image node_id 1 for calling the TestEntropy obj's underlying member method code with example usage: obj.testEmpty() without return types