[development-axapta] Usage of Unit Test Toolbar and Test Suite in AX 4.0

[Vamsi Praneeth]

 Hello guys,
               I have come a across a toolbar called 'Unit Test 
Toolbar'in Tool-->Development Tools-->Unit Test. Can someone explain 
how to use this? I tried browsing about this feature, I haven't got any 
answer regarding the Toolbar instead got another feature or rather a 
class type called Test Suite. I tried an example program of it and the 
test failed. And, is really unit testing possible in AX 4.0?