text: """Define stubs."""
  
  
  class Config:
      """For test only."""
      def __init__(self):
          # Postgres
          self.postgres_user = 'user'
          self.postgres_passwd = 'pass'
          self.postgres_host = 'localhost'
          self.postgres_port = '5432'
          self.postgres_db = 'database'
  
          # MySQL
          self.mysql_user = 'user'
          self.mysql_passwd = 'pass'
          self.mysql_host = 'localhost'
          self.mysql_port = '3306'
          self.mysql_db = 'database'
  