@raniejade Sorry, but I have another concern 🤔 Is it possible to write [TestFX](https://github.com/TestFX/TestFX) tests with Spek?

Nope, but it's possible to integrate TestFX with Spek. I actually wrote a TestFX plugin for Spek 1.x in my previous job - unfortunately it's closed source.

Wow that's interesting, can you give me some guidance or hints on how I can do that?

I suggest you look at the JUnit 5 implementation: https://github.com/TestFX/TestFX/tree/master/subprojects/testfx-junit5/src/main/java/org/testfx/framework/junit5. My memory is a bit rusty and I was using a TestFX version two years ago.

Thank you @raniejade I will try to do something about this. Is it a good/possible idea to implement it as a Spek extension?

If you want to use it with spek, then yes.