code: def test_conversion(self):
      # conversion from float should work
      e = SimpleEvaluation(float(0), float(0), float(0), float(0))
      self.assertIsInstance(e.num_tp, int)
      self.assertIsInstance(e.num_fp, int)
      self.assertIsInstance(e.num_tn, int)
      self.assertIsInstance(e.num_fn, int)
      # conversion from list or dict should fail
      self.assertRaises(TypeError, SimpleEvaluation, [0], [0], [0], [0])
      self.assertRaises(TypeError, SimpleEvaluation, {}, {}, {}, {})
  
imports: from __future__ import absolute_import, division, print_function
  import math
  import unittest
  from collections import OrderedDict
  from madmom.evaluation import *
label_desc: Use image node_id 2 for calling the TestSimpleEvaluationClass obj's underlying member method code with example usage: obj.test_conversion() without return types