Abstract: Provided herein is technology relating to testing software and particularly, but not exclusively, to methods for identifying the cause of a failed software test using probabilistic graphical models and/or a rules engine to evaluate and sort test steps by likelihood of failure for dynamic applications.

Abstract: A removable pressure sealing assembly for connecting two pipes includes a single piece cylindrical cover placed over a gap between the pipes, the pipes being aligned with each other. Various annular seals are positioned on the pipes to create a sealing mechanism in the gap between the cover and the pipes before the cover is finally positioned over the gap between the ends of the pipes. Once the annular seals are correctly positioned, the cover can be moved over the gap and end piece rings bolted to both the pipes and the cover to secure the assembly in place.