code: def testInvalidInput(self):
      self.assertComputeFails(
          NNLSChroma(), array([array([])]), zeros(3), zeros(2)
      )
      self.assertComputeFails(
          NNLSChroma(), array([array([0.5])]), zeros(3), zeros(2)
      )
  
file_path: essentia/test/src/unittests/tonal/test_nnlschroma.py
imports: from essentia_test import *
  import numpy
label_desc: Use image node_id 3 for calling the TestNNLSChroma obj's underlying member method code with example usage: obj.testInvalidInput() without return types