code: def test_get_threshold(self):
      self.assertGreater(self.o.get_threshold(), 0.0)
  
imports: from numpy.testing import TestCase, assert_equal, assert_almost_equal
  from aubio import onset, fvec
label_desc: Use image node_id 8 for calling the aubio_onset_params obj's underlying member method code with example usage: obj.test_get_threshold() without return types