code: def test_load_data_dictionary(self):
      reader = TrxfReader()
      reader.load_data_dictionary(DATA_FRAME)
      self.assertEqual(reader.data_dictionary, DATA_DICTIONARY)
  
file_path: AIX360/tests/rule_induction/trxf/pmml_export/test_trxf_reader.py
imports: from unittest import TestCase
  import aix360.algorithms.rule_induction.trxf.classifier.ruleset_classifier
  from aix360.algorithms.rule_induction.trxf.classifier.ruleset_classifier import RuleSetClassifier
  from aix360.algorithms.rule_induction.trxf.pmml_export.models import RuleSetModel, SimplePMMLRuleSetModel
  from aix360.algorithms.rule_induction.trxf.pmml_export.reader.trxf_reader import TrxfReader
  from tests.rule_induction.trxf.utilities import create_test_ruleset, DATA_DICTIONARY, TEST_MINING_SCHEMA, TEST_PMML_RULESET, DATA_FRAME
label_desc: Use image node_id 2 for calling the TestTrxfReader obj's underlying member method code with example usage: obj.test_load_data_dictionary() without return types