The file `src/diffusion.jl` is completely untested and has a code coverage of [0%](https://app.codecov.io/gh/FedericoStra/ConservationLawsParticles.jl/commit/f7f7d8192a0f2803669d1e0b29eb4d1263eb3b12/blob/src/diffusion.jl?dropdown=coverage).
The file
src/diffusion.jlis completely untested and has a code coverage of 0%.