How to know if execution is about to finish (Correctly or Exception) ?

Guillaume,

You can give the last item some unique name and, within the OnStopTest event handler, check whether the event is triggered for the last item or not. You can use code like this --

Sub GeneralEvents_OnStopTest(Sender)

  ' Get the current test item

  Set CurrentItem = Project.TestItems.Current

  ' Get the last test item

  IndexOfLastTestItem = Project.TestItems.ItemCount - 1

  Set LastItem = Project.TestItems.TestItem(IndexOfLastTestItem)

  ' Check names

  If CurrentItem.Name = LastItem.Name Then

     ' The test item is the last one

     ' Clean up...

  Else

     ' The test item is not the last one

     ' Don't clean up...

  End If 

End Sub