Using *Darwin as a test bed for Mac OSX applications

Question

Since Mac virtualization is technically illegal on anything but a Mac computer, is it possible to use one of the Darwin distros as a platform to test applications meant for Mac OSX?

From the little I've read, it seems *Darwin and MacOSX have a very tight relationship, but I haven't really found any information on the internet about using Darwin for MacOSX development -- So I'm a little skeptical if it is even possible.

Has anyone tried it?

Answer 1

Darwin does not have Aqua or any of the Core technologies, so only pure POSIX apps can be tested.