serialize tests Dummy is poorly written

[jon-chuang]

By not serializing to the actual type, it fails certain invariants, such as the fact that default impls for methods rely on other methods (such as uncompressed, unchecked). It is of questionable utility.

[weikengchen]

I agree that its serialize_uncompressed and serialize_unchecked should use the [u8]'s serialize_uncompressed and serialize_unchecked.

Let me do it in an upcoming PR.

[jon-chuang]

Actually I noticed my actual issue was something to do with the old serialized_unchecked being actually uncompressed. I fixed it in a forthcoming update to #130.

I guess morally speaking, what it is doing makes sense