new_contents: import pytest
  from mugloar import dragon, logger
  
  @pytest.fixture
  def log_instance():
      """Returns a Logger instance"""
      return logger.Logger()
  
  @pytest.fixture
  def knight():
      return {'agility': 8, 'endurance': 8, 'name': 'Sir. Stephen Mathis of Nova Scotia', 'armor': 0, 'attack': 4}
  
  @pytest.fixture
  def dragon_instance(knight):
      return dragon.Dragon('NMR', knight)
  
  @pytest.fixture
  def stats_map():
      return {'attack': 'scaleThickness',
              'armor': 'clawSharpness',
              'agility': 'wingStrength',
              'endurance': 'fireBreath'}
  
  def test_comparison(log_instance, knight, dragon_instance, stats_map):
      log_instance.comparison(knight, dragon_instance, stats_map)
  
subject: Implement unit tests for logger class