In case anyone else runs into it, Unity's test framework + VRC world SDK is fucked. The UdonManager that gets loaded into every scene breaks however the PlayMode tests are supposed to work, so you get zero test passes and the temporary test scene doesn't delete itself instead polluting your assets directory.

https://github.com/vrchat-community/ClientSim used to have a bunch of helper scripts to unfuck this but

>Removing the Tests folder from the source. This is unfortunate, but they're not currently working - we've got tasks to fix them up but we've got much higher-priority items in delivering and supporting new features, so this reflects the current state of the package.

I've learned to never expect much from fucking vrchat, but it cuts deeper sometimes.