text: import unittest
  
  from nativeconfig.options import IntOption
  from nativeconfig.configs import MemoryConfig
  
  from test.configs import ConfigMixin
  
  
  class MyMemoryConfig(MemoryConfig):
      pass
  
  
  class TestMemoryConfig(ConfigMixin, unittest.TestCase):
      CONFIG_TYPE = MyMemoryConfig
  
      def test_config_is_created_if_not_found(self):
          pass
  
      def test_inital_config(self):
          class MyConfig(MemoryConfig):
              age = IntOption('Age', default=42)
  
          c = MyConfig({'Age': 9000})
          self.assertEqual(c.age, 9000)
  
          c.reset()
          self.assertEqual(c.age, 42)
  