BTDBTest.EventStoreMigrationTest.CanMigrateListWithNewFields C# (CSharp) Method

        public void CanMigrateListWithNewFields()
        {
            var parentMapper = new FullNameTypeMapper();
            var mapper = new EventStoreTest.OverloadableTypeMapper(typeof(Item2), parentMapper.ToName(typeof(Item)),
                new EventStoreTest.OverloadableTypeMapper(typeof(EventRoot2), parentMapper.ToName(typeof(EventRoot)),
                parentMapper
                ));
            var obj = PassThroughEventStorage(new EventRoot
            {
                Items = new List<Item> { new Item { Field = "A" } }
            }, mapper);
            var serializer = new EventSerializer(mapper);
            bool hasMetadata;
            var meta = serializer.Serialize(out hasMetadata, obj).ToAsyncSafe();
            serializer.ProcessMetadataLog(meta);
            var data = serializer.Serialize(out hasMetadata, obj);

            var deserializer = new EventDeserializer(mapper);
            object obj2;
            Assert.False(deserializer.Deserialize(out obj2, data));
            deserializer.ProcessMetadataLog(meta);
            Assert.True(deserializer.Deserialize(out obj2, data));
        }