Hi!
I made a site where you can post tests and solutions, they get automatically verified. Think Quora or Stackoverflow but instead of posting questions and answers you post tests and solutions. The site is hosted on https://solvemytest.dev it is open source (MIT license) code is at https://github.com/skariel/td4.
Currently it is all very basic, but fully functional. There are many ways to enhance it of course, for example making a marketplace for tests / solutions, or a TDD management tool: imagine a tech lead posting tests and a team implementing solutions, etc. Also could add a reputation system, comments, much more.
What do you think??