Unit Test System in the InterSystems iris

Hello word!

I am new in this field and i am coming from the dot net and angular world.
So hello to everyone!

Im trying to understand the unit test in the vs code what is works in the community version at home (25.2).
I set the  ^UnitTestRoot to somewhere and setted the "unitest: enabled" setting in the settings.json file. 
But it is not work and can't run. Is't it scan? It is not a problem because i can run it dircetley with ##class(classname).RunTest() and it runs but doesn't contain anyting. The Restresult is exist but it is empty.
I think the system is does not understand that the test can find somewhere.
I use the %UnitTest.TestCase as baseclass and use it as at home where it is works.. so i'm stucked. 

Can anyone help me how I can create unittest in the 23.3 version?