No tests found for given includes:

I'm trying to run a simple test that's in my Test class from IDE (Intellij IDEA) and error that pops out is:

No tests found for given includes: org.sample.Test.test

Same thing is happening when I try to run it from command-line. In Intellij, I've set up Build, Execution, Deployment > Build Tools > Gradle > Runner to Gradle Test Runner and I have @Test on my method. Also, I can't run any test (from some other project), so I suppose that it's some configuration problem.

Can someone point me to something, what can I be doing wrong ?