Do we have a test for this autoload part?

Worse, we don't have testing for any autoload code that has been put in over the last 8 months or so.

Sadly (frustratingly), there's just (AFAICT) no way to do it unless Playground is substantially changed to sandbox a completely separate $nu.data-dir and $nu.default-config-dir. Today (IIRC, working on what I saw last month when I checked) it simply passes in --config <file> when testing something configuration related.

Without sandboxing it properly, any attempt to create an autoload file "leaks" out of Playground into the filesystem of any user who is running the tests.

I'm still noodling through Playground, but it would be a while before I'm up to speed enough on that code to make the change myself. If someone has better experience there, I'd love it if they could take a look.