code: def test_process(self):
      act = self.processor((sample_file, sample_beats[:, 0]))
      self.assertTrue(
          np.allclose(act, sample_bar_act, rtol=1e-3, equal_nan=True)
      )
  
imports: from __future__ import absolute_import, division, print_function
  import unittest
  from os.path import join
  from madmom.ml.hmm import HiddenMarkovModel
  from madmom.audio.chroma import CLPChroma
  from madmom.features import Activations
  from madmom.features.downbeats import *
  from madmom.models import PATTERNS_BALLROOM
  from .None import ACTIVATIONS_PATH, ANNOTATIONS_PATH, AUDIO_PATH, DETECTIONS_PATH
  from .test_utils import DETECTION_FILES
label_desc: Use image node_id 2 for calling the TestRNNBarProcessorClass obj's underlying member method code with example usage: obj.test_process() without return types