since ADT 3.0 we cannot perform a single unit test method.
Before the update to 3.0 (Feb 2019) this was possible by marking the testmethod in coding and choosing Run as Abap Unit Test.
Before the latest 2.7-update (Oct 2018) it was even possible to run a single testmethod by rigjht-clicking in the Tree in the Unit Test View.
If we had a wish we would choose running single testmethods in the tree. The reason is that some of our testmethods have a long running time...
Could you enable running of single testmethods?