code: def test_score_cache_invalid_scorer(self):
      with self.assertRaises(AssertionError) as e:
          ScoreCache("invalid_scorer", None)
  
file_path: pgmpy/pgmpy/tests/test_estimators/test_ScoreCache.py
imports: import unittest
  from mock import Mock, MagicMock, call
  from pgmpy.estimators.ScoreCache import LRUCache, ScoreCache
  from pgmpy.estimators import BicScore
  import pandas
label_desc: Use image node_id 4 for calling the TestScoreCache obj's underlying member method code with example usage: obj.test_score_cache_invalid_scorer() without return types