code: def testZeroSpectrum(self):
      # Inputting zeros should return zero.
      size = 1024
      self.assertEqualVector(
          TensorflowInputTempoCNN()(zeros(size)), zeros(40)
      )
  
imports: from essentia_test import *
  import numpy
label_desc: Use image node_id 1 for calling the TestTensorflowInputTempoCNN obj's underlying member method code with example usage: obj.testZeroSpectrum() without return types