OK, now I'm into writing tests for rules! I'm using an existing test as a reference and trying to base mine off of it: https://github.com/pantsbuild/pants/blob/main/src/python/pants/backend/python/lint/black/rules_integration_test.py My issue is that I'm trying to test a non-Root rule, or I guess a non-

QueryRule

. At least, it doesn't have a directly associated

QueryRule

the way I wrote it, and I don't think it should have one. It's an intermediate rule and product used by others. Do I just need to stub in a

QueryRule

to force the

RuleRunner

to have a path from the root query to my rule?

Yeah, you have to massage the graph like that for rule tests.