code: def test_get_result(self):
      self.assertTrue(isinstance(self.luminol.get_root_causes(), dict))
      self.assertEqual(self.luminol.get_root_causes()["A"], "m1")
      self.assertEqual(self.luminol.get_root_causes()["B"], "m2")
  
imports: import os
  import sys
  import unittest
  from luminol import exceptions
  from luminol import Luminol
  from luminol.correlator import Correlator
label_desc: Use image node_id 2 for calling the TestLuminol obj's underlying member method code with example usage: obj.test_get_result() without return types