old_contents: import os
  
  class Config(object):
      DEBUG = False
      MONGODB_DB = os.environ.get('MONGODB_DB', None)
      MONGODB_HOST = os.environ.get('MONGODB_HOST', None)
      MONGODB_PORT = int(os.environ.get('MONGODB_PORT', 0))
      SECRET_KEY = os.environ.get('SECRET_KEY', None)
      SECURITY_REGISTERABLE = True
      MAIL_SERVER = os.environ.get('MAIL_SERVER', None)
      MAIL_USERNAME = os.environ.get('MAIL_USERNAME', None)
      MAIL_PASSWORD = os.environ.get('MAIL_PASSWORD', None)
      SECURITY_PASSWORD_HASH = 'sha512_crypt'
      SECURITY_PASSWORD_SALT = os.environ.get('SECURITY_PASSWORD_SALT', None)
  
  class DevelopmentConfig(Config):
      DEBUG = True
      SECRET_KEY = 'not-a-secret'
      SECURITY_PASSWORD_SALT = 'not-secure'
      MONGODB_DB = os.environ.get('MONGODB_DB', 'legicert')
      MONGODB_HOST = os.environ.get('MONGODB_HOST', 'localhost')
      MONGODB_PORT = int(os.environ.get('MONGODB_PORT', 27017))
      
  
  
  class TestConfig(DevelopmentConfig):
      TESTING = True
      MONGODB_DB = os.environ.get('MONGODB_DB', 'legicert_test')
      MONGODB_HOST = os.environ.get('MONGODB_HOST', 'localhost')
      MONGODB_PORT = int(os.environ.get('MONGODB_PORT', 27017))
new_contents: import os
  
  class Config(object):
      DEBUG = False
      MONGODB_DB = os.environ.get('MONGODB_DB', None)
      MONGODB_HOST = os.environ.get('MONGODB_HOST', None)
      MONGODB_PORT = int(os.environ.get('MONGODB_PORT', 0))
      SECRET_KEY = os.environ.get('SECRET_KEY', None)
      SECURITY_REGISTERABLE = True
      MAIL_SERVER = os.environ.get('MAIL_SERVER', None)
      MAIL_USERNAME = os.environ.get('MAIL_USERNAME', None)
      MAIL_PASSWORD = os.environ.get('MAIL_PASSWORD', None)
      SECURITY_PASSWORD_HASH = 'sha512_crypt'
      SECURITY_PASSWORD_SALT = os.environ.get('SECURITY_PASSWORD_SALT', None)
  
  class DevelopmentConfig(Config):
      DEBUG = True
      SECRET_KEY = 'not-a-secret'
      SECURITY_PASSWORD_SALT = 'not-secure'
      MONGODB_DB = os.environ.get('MONGODB_DB', 'legicert')
      MONGODB_HOST = os.environ.get('MONGODB_HOST', 'localhost')
      MONGODB_PORT = int(os.environ.get('MONGODB_PORT', 27017))
  
  
  class TestConfig(DevelopmentConfig):
      TESTING = True
      MONGODB_DB = os.environ.get('MONGODB_DB', 'legicert_test')
      MONGODB_HOST = os.environ.get('MONGODB_HOST', 'localhost')
      MONGODB_PORT = int(os.environ.get('MONGODB_PORT', 27017))
subject: fix test