Perl module that provides a hook system to mock Perl filecheck operations

 Overload::FileCheck provides a way to mock one or more file checks. It is also
 possible to mock stat/lstat functions using "mock_all_from_stat" and let
 Overload::FileCheck mock for you for any other -X checks.
 .
 By using mock_all_file_checks you can set a hook function to reply any -X
 check. You can provide your own pure perl code when performing file checks
 using one of the -X ops: -e, -f, -z.