@amanda.hinchman-dominguez may I ask one question? How did you achieve whitebox testing in tornadoFX in conjunction with modularity (rephase: what's your solution right now)? I'm currently looking at
https://stackoverflow.com/a/52110406/2251275 , and so far I don't see any clean solution. It all comes to conclusion, that you should forfeit whitebox testing in modular world or use dirty workarounds (at least right now). I've checked out tornadofx jdk10 branch, and I see the same issue I'm having in my project:
Symbol is declared in module 'org.testfx' which current module does not depend on
(and similar diagnostic errors all over the tests, though they're perfectly executable from inside IDE, for some reason maven fails).