How to mark a directory as a generated-test-source root in IntelliJ?

Question

I'm trying out Dagger2 in Intellij 2016.1 (but not with gradle) on ubuntu.

Intellij creates dagger's generated sources in either ./out/production/<ProjectModule>/generated/ or ./out/test/<ProjectModule>/generated_tests/ depending on if it was generated from a source or test directory, respectively.

But from what I tell, I can only mark those directories as either sources root, test sources root, or generated sources root; there is no option for generated test sources root, say.

Why is this important? Because the generated test sources depend on my test sources. If they are marked as a generated sources root then Intellij cannot find the dependencies.

Note: I don't think they should be marked as test sources root because then Intellij tries to compile those again; unless there is some way of preventing this of which I am unaware.

So is there a way to mark this directory as a generated test sources root or something equivalent?

Answer 1

To mark a diectory as "generated test sources root", open the "Project Structure" dialog at Project Settings > Modules and click on the little "P" next to your folder of choice, and select the "For generated resources" button.