Enhance Test Coverage

I have a decent amount of tests, but I could always add more. In particular, I should look at current CSLA serialization tests [here](https://github.com/MarimerLLC/csla/tree/main/Source/Csla.test/Serialization) and [here](https://github.com/MarimerLLC/csla/tree/main/Source/tests/Csla.test/Serialization) and see how to add them to my test suite.