1. How many % of all tests have been re-written to use Google Test instead of cxxtest?

2. Does make test run Google Test suite or cxxtest or both?

3. Is the Google Test framework software included in the repository or a dependency? If the latter, what package?

I guess what I'm looking for is a wiki page with the general status / how to details on this refactoring effort...

I wouldn't mind spending some time helping on this as a way to learn about Inkscape's source/architecture, and Google Test framework.