code: def test_process(self):
      act = self.processor(sample_file)
      self.assertTrue(np.allclose(act, sample_act_rnn, atol=1e-6))
  
imports: from __future__ import absolute_import, division, print_function
  import unittest
  from os.path import join
  from madmom.features import Activations
  from madmom.features.notes import *
  from madmom.io import load_notes
  from .None import ACTIVATIONS_PATH, AUDIO_PATH, DETECTIONS_PATH
label_desc: Use image node_id 2 for calling the TestRNNOnsetProcessorClass obj's underlying member method code with example usage: obj.test_process() without return types