This is a user unfriendly test add-on for World of Warcraft designed to help maintain other add-ons such as _Clean and _Cursor. It iterates through a subset of all WoW files one at a time for human inspection, with the ability to leave comments per file.
Because WoW doesn't expose file lists to add-ons, _FileTest requires a few third party scripts and tools. Most importantly, you must extract listfiles from all WoW MPQ archives for the addon to function. MyWarcraftStudio is one program capable of extracting them. Once all listfiles are in place, a Lua script parses them all into a data file used by the addon directly. Therefore, you'll need a copy of Lua 5.1 to run that script. All of this is explained step by step in