tests/misc/date-sec.sh

   1 #!/bin/sh
   2 # Ensure that a command like
   3 # date --date="21:04 +0100" +%S' always prints '00'.
   4 # Before coreutils-5.2.1, it would print the seconds from the current time.
   5
   6 # Copyright (C) 2004-2019 Free Software Foundation, Inc.
   7
   8 # This program is free software: you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation, either version 3 of the License, or
  11 # (at your option) any later version.
  12
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  20
  21 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  22 print_ver_ date
  23
  24
  25
  26 # It would be easier simply to sleep for two seconds between two runs
  27 # of $(date --date="21:04 +0100" +%S) and ensure that both outputs
  28 # are '00', but I prefer not to sleep unconditionally.  'make check'
  29 # takes long enough as it is.
  30
  31 n=0
  32 # See if the current number of seconds is '00' or just before.
  33 s=$(date +%S)
  34 case "$s" in
  35   58) n=3;;
  36   59) n=2;;
  37   00) n=1;;
  38 esac
  39
  40 # If necessary, wait for the system clock to pass the minute mark.
  41 test $n = 0 || sleep $n
  42
  43 s=$(date --date="21:04 +0100" +%S)
  44 case "$s" in
  45   00) ;;
  46   *) fail=1;;
  47 esac
  48
  49 Exit $fail