Ran a deployed test via the DevTest portal.
The test includes a test step that calls a java class, the method has caused an infinite loop.
I have tried stopping and killing the test via the test monitor (right-click sub-menu).
I have also tried stopping the coordinator servers in the hope that it will cause the test to abort.
Finally I deleted the test, the project, stopped and restarted the registry + portal.
Test still persists with a running indicator.