`test/proto` not included in PyPi archives

I’m trying to build pyrobuf locally, from the PyPi source packages. 
The build passes successfully (no surprises there), but the tests fail, because `tests/proto` and `tests/proto3` are not contained in the archive uploaded to PyPi. If I check these two directories out from the git repo, everything works.

Could you include the entire test directory in future uploads?
Thanks! 