Being able to run tests only in the specified module and not include the tests for module that are imported

[ypkang]

Is your feature request related to a problem? Please describe.

Say, i have a.jac and a.test.jac. and a.jac imports from b.jac. It seems that if I run jac test a.jac, it will run both tests from a and b modules. It would be great if we can just run the tests in a.test.jac

Describe the solution you'd like

Describe alternatives you've considered