code: def testZeros(self):
      self.assertAlmostEqual(RollOff()([0] * 101), 0)
  
file_path: essentia/test/src/unittests/spectral/test_rolloff.py
imports: from essentia_test import *
label_desc: Use image node_id 2 for calling the TestRollOff obj's underlying member method code with example usage: obj.testZeros() without return types