The testing team follows Software Testing Life Cycle (STLC) which is similar to the development cycle followed by the development team. There are following six phases in every Software development life cycle model: Requirement gathering and analysis. Design.
If you simply deleted an XLS file, DiskInternals Excel Recovery will look up the file system to find all XLS files that were deleted recently, and test each file for the possibility of successful recovery.
AutoRecover: Pros: Lets you recover unsaved changes to a file if Word crashes, in which case Word will offer to recover the file after reopening. Cons: (1) If the file was never saved, there will be nothing to fall back on, because AutoRecover is only triggered for documents already stored on disk.