tests/test-lib.sh

   1 # source this file; set up for tests
   2
   3 # Copyright (C) 2009-2010 Free Software Foundation, Inc.
   4
   5 # This program is free software: you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation, either version 3 of the License, or
   8 # (at your option) any later version.
   9
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 # Skip this test if the shell lacks support for functions.
  19 unset function_test
  20 eval 'function_test() { return 11; }; function_test'
  21 if test $? != 11; then
  22   echo "$0: /bin/sh lacks support for functions; skipping this test." 1>&2
  23   Exit 77
  24 fi
  25
  26 # We use a trap below for cleanup.  This requires us to go through
  27 # hoops to get the right exit status transported through the signal.
  28 # So use `Exit STATUS' instead of `exit STATUS' inside of the tests.
  29 # Turn off errexit here so that we don't trip the bug with OSF1/Tru64
  30 # sh inside this function.
  31 Exit ()
  32 {
  33   set +e
  34   (exit $1)
  35   exit $1
  36 }
  37
  38 test -f "$srcdir/init.cfg" \
  39   && . "$srcdir/init.cfg"
  40
  41 test_dir_=$(pwd)
  42
  43 this_test_() { echo "./$0" | sed 's,.*/,,'; }
  44 this_test=$(this_test_)
  45
  46 # This is a stub function that is run upon trap (upon regular exit and
  47 # interrupt).  Override it with a per-test function, e.g., to unmount
  48 # a partition, or to undo any other global state changes.
  49 cleanup_() { :; }
  50
  51 t_=$("$abs_top_builddir/src/mktemp" -d --tmp="$test_dir_" cu-$this_test.XXXXXXXXXX)\
  52     || error_ "failed to create temporary directory in $test_dir_"
  53
  54 remove_tmp_()
  55 {
  56   __st=$?
  57   cleanup_
  58   cd "$test_dir_" && chmod -R u+rwx "$t_" && rm -rf "$t_" && exit $__st
  59 }
  60
  61 # Run each test from within a temporary sub-directory named after the
  62 # test itself, and arrange to remove it upon exception or normal exit.
  63 trap remove_tmp_ 0
  64 trap 'Exit 129' 1
  65 trap 'Exit 130' 2
  66 trap 'Exit 131' 3
  67 trap 'Exit 141' 13
  68 trap 'Exit 143' 15
  69
  70 cd "$t_" || error_ "failed to cd to $t_"
  71
  72 if ( diff --version < /dev/null 2>&1 | grep GNU ) 2>&1 > /dev/null; then
  73   compare() { diff -u "$@"; }
  74 elif ( cmp --version < /dev/null 2>&1 | grep GNU ) 2>&1 > /dev/null; then
  75   compare() { cmp -s "$@"; }
  76 else
  77   compare() { cmp "$@"; }
  78 fi
  79
  80 # Initialize; all bourne shell scripts end with "Exit $fail".
  81 fail=0