Currently it's searching for test cases in the nonexistent folders, and because there are none, tests always pass. Point the script onto the correct ones. And while we're at it, add a check to make sure this situation won't repeat in the future. Signed-off-by: Sviatoslav Peleshko <sviatoslav.peleshko@globallogic.com> Reviewed-by: Sagar Ghuge <sagar.ghuge@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25657>