XSpec consists of a syntax for describing the behaviour of XSLT or XQuery code and some code that enables to test the code against those descriptions.
Check out the XSpec documentation in the wiki before raising an issue or ask a question. If you have any question which is not answered in the wiki, feel free to raise an issue or post it in the XSpec discussion list.
XSpec is an open source project originally written by Jeni Tennison. It was maintained in the past years by Florent Georges. Active development of XSpec restarted in 2016 and the project is currently maintained by Sandro Cirulli with the help of the XSpec community.