This test suite was previously included in the project lua-TestMore.
Now, it has its own repository : 
https://framagit.org/fperrad/lua-HarnessIt doesn't require the TestMore library, a minimal test library is included (tap.lua).
Variants for various Lua (5.1, 5.2, 5.3, ...) are now merged in a single test suite.
The features included (ie. compiled) in a Lua interpreter could be selected via a config file (profile.lua)
LuaJIT specific tests have been added.
The homepage is available on 
https://fperrad.frama.io/lua-Harness/Feedback are welcome.
François