The best way to setup a working environment is to use nix flakes
nix develop should bring everything you need:
the current idris2 version we use and its libraries,
dhall and dhall-to-json.
make test is running all the tests referenced in tests.dhall.
Note that the tests are run by the current version of REPLica, so if you're
changing the behaviour of REPLica during your development, it may impact the
tests.
If you prefer to use a stable version of replica to launch your tests, you can
set the REPLICA_EXE variable to the path of the replica version you want to
use.
In the end though, the tests must pass with the current version.
If you want to update the golden values of the tests, you can use make generate.
All contributions are welcome.