#! /bin/sh
# Copyright (C) 2011-2012 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# Sanity check for the automake testsuite: the 'is_newest' subroutine.

. ./defs || Exit 1

plan_ 21

# I'm a lazy typist.
Y () { command_ok_ "is_newest $*" is_newest "$@"; }
N () { command_ok_ "not is_newest $*" not is_newest "$@"; }

: > a
$sleep
: > b
: > c

stat a b c || : # For debugging.

Y c a
Y b a
N a b
Y c b
Y c c
Y c a b c

touch -r c d

stat c d || : # For debugging.

Y c d

# Should work on directories too, both empty and not-empty.  An older
# implementation of 'is_newest' failed if the first argument was a
# directory containing files newer than itself (see automake bug#9147).
mkdir u x
touch x/foo
$sleep
touch x/foo
$sleep
mkdir v y
touch y/foo
$sleep
touch y/foo

stat u v x y x/foo y/foo || : # For debugging.

for older in u x; do
  for newer in v y; do
    Y $newer $older
    N $older $newer
  done
done

Y x/foo x
N x x/foo

touch -r x u
Y x u
Y u x

# A couple of mild "stress" tests.
Y y x u v
Y y u x/foo a b c

: