Per-package unit test configuration?

I would like to configure vm options differently per package in my project, so that whenever I run a unit test or (tests) - it will pick up the appropriate configuration.

Run/Debug configurations are not quite what I need, since I will need to create such for any combination of tests (not feasible as there are thousands).

Ideally that will be part of the package configuration somehow.

Is that possible to achieve in IntelliJ?

Thanks.