kc3-lang/automake/t/self-check-is_newest.tap

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• Hash : 3562e384
  Author :
  Date : 2017-09-16T13:03:36
  

  Prefer https: URLs
  
  In Gnulib, Emacs, etc. we are changing ftp: and http: URLs to use
  https:, to discourage man-in-the-middle attacks when downloading
  software. The attached patch propagates these changes upstream to
  Automake.  This patch does not affect files that Automake is
  downstream of, which I'll patch separately.
  
  Althouth the resources are not secret, plain HTTP is vulnerable to
  malicious routers that tamper with responses from GNU servers,
  and this sort of thing is all too common when people in some other
  countries browse US-based websites. See, for example:
  
  Aceto G, Botta A, Pescapé A, Awan MF, Ahmad T, Qaisar
  S. Analyzing internet censorship in Pakistan. RTSI
  2016. https://dx.doi.org/10.1109/RTSI.2016.7740626
  
  HTTPS is not a complete solution here, but it can be a significant
  help. The GNU project regularly serves up code to users, so we should
  take some care here.
  

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• t/self-check-is_newest.tap

• #! /bin/sh
  # Copyright (C) 2011-2017 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 <https://www.gnu.org/licenses/>.
  
  # Sanity check for the automake testsuite: the 'is_newest' subroutine.
  
  . test-init.sh
  
  plan_ 21
  
  # I'm a lazy typist.
  Y () { command_ok_ "is_newest $*" is_newest "$@"; }
  N () { command_ok_ "not is_newest $*" not is_newest "$@"; }
  
  # A simple "touch -r" might not work, since on some file systems, and/or
  # with some 'touch' versions, it might truncate the timestamp (or even
  # rounded it upwards maybe).  So the first (apparently redundant) 'touch'
  # invocation below ensures that the timestamp gets "normalized" in a way
  # that allows it to be correctly copied by the second 'touch' invocation.
  copy_timestamp ()
  {
    touch -r "$1" "$1" && touch -r "$1" "$2"
  }
  
  : > 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
  
  copy_timestamp 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
  
  copy_timestamp 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
  
  :
  

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