code: def test_results(self):
      self.assertEqual(self.eval.error_category, "relative")
      self.assertEqual(self.eval.score, 0.3)
  
imports: from __future__ import absolute_import, division, print_function
  import unittest
  from os.path import join
  from madmom.evaluation.key import *
  from .None import ANNOTATIONS_PATH, DETECTIONS_PATH
label_desc: Use image node_id 3 for calling the TestKeyEvaluationClass obj's underlying member method code with example usage: obj.test_results() without return types