Fix `--root` option for `test` subcommand

[msooseth]

Description

The --root option for the test subcommand didn't work actually. This is because we cwd-d into the directory, then called all the functions with the directory name as a prefix, so the directory was in a sense prefixed twice. This is easy to test -- create a tmp subdirectory and cd into it, call git init, call forge init --force, add a solidity file under src/ run forge build then go back with cd .. and then run hevm test --root "tmp/" it will fail.

With this change, it now succeeds, as expected.

Checklist

• [x] tested locally
• [ ] added automated tests
• [ ] updated the docs
• [x] updated the changelog

[arcz]

I think this is good. Also, getCurrentDirectory returns absolute path but --root can be relative so it might be better to use makeAbsolute in getRoot so it always returns absolute path:

getRoot cmd = maybe getCurrentDirectory makeAbsolute (cmd.root)

[msooseth]

I think this is good. Also, getCurrentDirectory returns absolute path but --root can be relative so it might be better to use makeAbsolute in getRoot so it always returns absolute path:

getRoot cmd = maybe getCurrentDirectory makeAbsolute (cmd.root)

That's a really good point, thanks! I was actually confused when I was debugging what that relative path was that it was referring to. It would have been a lot easier to understand the bug with this already there. I added it in. I'll wait for the checks to finish and then merge it in :)