Hugh Sasse Staff Elec Eng wrote:

> Which bit is confusing you? The test unit bit,
Yes.
	1) I am not clear on whether only the classes are being tested ( no 
instances, no run with real inputs ) or a full program can be tested.
	2) Is the intent to test all boundary conditions?  Pre-conditions? 
Post-conditions?
	3) Is a single test meant for a single class and its subclasses, or 
does it work just as well with all of the classes that might be in the 
program at once?
	Thanks,
		Barry