code: def testSetAndGetLoggingLevel(self):
      self.dlm1.setLoggingLevel("CRITICAL")
      assert self.dlm1._logger.getEffectiveLevel() == logging.CRITICAL
      assert self.dlm1.getLoggingLevel() == "CRITICAL"
  
      self.dlm1.setLoggingLevel("INFO")
      assert self.dlm1._logger.getEffectiveLevel() == logging.INFO
      assert self.dlm1.getLoggingLevel() == "INFO"
  
file_path: pydlm/tests/core/test_dlm.py
imports: from pydlm.modeler.trends import trend
  from pydlm.core._dlm import _dlm
  import logging
  import numpy
  import unittest
label_desc: Use image node_id 8 for calling the test_dlm obj's underlying member method code with example usage: obj.testSetAndGetLoggingLevel() without return types