code: def test_results_empty(self):
      e = TempoEvaluation([], [])
      self.assertEqual(e.pscore, 1)
      self.assertEqual(e.any, True)
      self.assertEqual(e.all, True)
      self.assertEqual(e.acc1, True)
      self.assertEqual(e.acc2, True)
      self.assertEqual(len(e), 1)
  
imports: from __future__ import absolute_import, division, print_function
  import math
  import unittest
  from madmom.evaluation.tempo import *
  from .None import ANNOTATIONS_PATH, DETECTIONS_PATH
label_desc: Use image node_id 3 for calling the TestTempoEvaluationClass obj's underlying member method code with example usage: obj.test_results_empty() without return types