I wonder is there any id or specified label to distinguish a selected class whether it is one of the standard class declarations or test class in run-time?
EDIT: I collect the entire classes from the project. I separate abstract classes, interfaces, subclasses by looking the collection, whereas I also want to know how many classes have test behavior. In other words, how many classes are actually test classes. One more thing: I don't know these classes in advance, these are not mine!