Well found my answer. If your test inherits from WorkItemTest (either PresentationTest or SilverlightTest), you can call from your tests:
TestComplete()
Indicates the structure in which your test method ended and move on to the next result. This can be added to event callbacks, delegates, etc. After that, you should not do more work or your test.
EnqueueTestComplete
TestComplete. TestComplete, , Enqueue *.
EnqueueCallback
(, ..). , . enqueue Actions, Action .
EnqueueConditional
/ Func. , , . True, , . , , , .
EnqueueDelay
, TimeSpan, , , . , , . DoEvents, , .