Hi all, I've been working on a very simple answer testing module. It leverages what is currently being used by Enzo to do answer testing. The code is up here: http://bitbucket.org/MatthewTurk/yt_answer_testing There are three sets of tests right now: * Hierarchy consistency * Projections and profiles * Field values Jeff's coding up a mechanism for running this at SLAC on a cron job against datasets from Enzo, Orion, RAMSES and FLASH. If you have a dataset that you would like added to the mix, please email either of us. When it's up and running he'll email the list with the URL, but that might not be for a little while. If you have a test you would like to add, please fork the repo on bitbucket *or* clone it and patchbomb me with your patches. -Matt