fails:File::Constants matches mode constants
fails:File::Constants the separator constant
fails:File::Constants the open mode constants
fails:File::Constants lock mode constants
fails:File::Constants File::RDONLY
fails:File::Constants File::WRONLY
fails:File::Constants File::CREAT
fails:File::Constants File::RDWR
fails:File::Constants File::APPEND
fails:File::Constants File::TRUNC
fails:File::Constants File::NOCTTY
fails:File::Constants File::NONBLOCK
fails:File::Constants File::LOCK_EX
fails:File::Constants File::LOCK_NB
fails:File::Constants File::LOCK_SH
fails:File::Constants File::LOCK_UN
fails:File::Constants File::SEPARATOR
fails:File::Constants File::Separator
fails:File::Constants File::PATH_SEPARATOR
