[WIP] n3fit unit testing
Created by: scarlehoff
This PR adds tests files for n3fit
. Whenever possible (mostly the backend) while for the fit it will be rather a regression test.
I will edit this PR with the things that are tested (so I can copy it verbatim to the documentation at the end).
Unit tests
- Tests that all backend operations do exactly what you would expect numpy to do.
- Tests that loss functions are doing what is expected from them.
- Tests for the DIS and Hadronic convolutions