new_contents: #!/usr/bin/env python
  from uuid import UUID
  
  from unittest import TestCase
  
  from bson import dumps, loads
  
  
  class TestUUID(TestCase):
      def test_uuid(self):
          uuid = UUID('584bcd8f-6d81-485a-bac9-629c14b53847')
          obj = {"uuid": uuid}
          serialized = dumps(obj)
          obj2 = loads(serialized)
  
          self.assertIsInstance(obj2['uuid'], UUID)
          self.assertTrue(obj2['uuid'] == uuid)
  
subject: add uuid test