If you try to use fdescribe, fcontext or fit in AsyncSpec it still runs all the other tests but does skip the individual tests within the same file. Instead it should be skipping all the tests in the test bundle except for the focused ones.

I have attached a quick demo project with 4 tests and if you do cmd-u in this project it will execute 3 tests and only skip the one in the same file as where fit is.

quick-demo.zip