def test_validate_comment_existence_ng_not_exists_comment_id(self):
     with self.assertRaises(RecordNotFoundError):
         DBUtil.validate_comment_existence(self.dynamodb, 'piyopiyo')
 def test_validate_comment_existence_ok(self):
     result = DBUtil.validate_comment_existence(
         self.dynamodb, self.comment_items[0]['comment_id'])
     self.assertTrue(result)