#!/bin/sh
# test nohup

# Copyright (C) 2003, 2006 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 3 of the License, 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/>.

if test "$VERBOSE" = yes; then
  set -x
  nohup --version
fi

. $srcdir/../envvar-check
. $srcdir/../lang-default

pwd=`pwd`
t0=`echo "$0"|sed 's,.*/,,'`.tmp; tmp=$t0/$$
trap 'status=$?; cd "$pwd" && chmod -R u+rwx $t0 && rm -rf $t0 && exit $status' 0
trap '(exit $?); exit $?' 1 2 13 15

framework_failure=0
mkdir -p $tmp || framework_failure=1
cd $tmp || framework_failure=1

if test $framework_failure = 1; then
  echo "$0: failure in testing framework" 1>&2
  (exit 1); exit 1
fi

fail=0

nohup sh -c 'echo stdout; echo stderr 1>&2' 2>err || fail=1

# Be careful.  The results of the above nohup command
# change depending on whether stdin and stdout are redirected.
if test -t 1; then
  test "`cat nohup.out`" = stdout || fail=1
  if test -t 0; then
    echo 'nohup: ignoring input and appending output to `nohup.out'\'
  else
    echo 'nohup: appending output to `nohup.out'\'
  fi >exp || fail=1
else
  # Here it should not even exist.
  test -f nohup.out && fail=1
  if test -t 0; then
    echo 'nohup: ignoring input' >exp
  else
    rm -f exp
  fi || fail=1
fi
echo 'stderr' >> exp || fail=1

cmp exp err || fail=1
test $fail = 1 && diff exp err 2> /dev/null
rm -f nohup.out err exp
# ----------------------

# Be careful.  The results of the following nohup command
# change depending on whether stderr is redirected.
nohup sh -c 'echo stdout; echo stderr 1>&2' >out || fail=1
if test -t 2; then
  test "`cat out|tr '\n' -`" = stdout-stderr- || fail=1
else
  test "`cat out|tr '\n' -`" = stdout- || fail=1
fi
# It must *not* exist.
test -f nohup.out && fail=1
rm -f nohup.out err
# ----------------------

nohup no-such-command 2> err
errno=$?
if test -t 1; then
  test $errno = 127 || fail=1
  # It must exist.
  test -f nohup.out || fail=1
  # It must be empty.
  test -s nohup.out && fail=1
fi

cat <<\EOF > exp || fail=1
nohup: appending output to `nohup.out'
nohup: cannot run command `no-such-command': No such file or directory
EOF
# Disable these comparisons.  Too much variation in 2nd line.
# cmp exp err || fail=1
# test $fail = 1 && diff exp err 2> /dev/null
rm -f nohup.out err exp
# ----------------------

touch k; chmod 0 k
nohup ./k 2> err
errno=$?
test $errno = 126 || fail=1
if test -t 1; then
  # It must exist.
  test -f nohup.out || fail=1
  # It must be empty.
  test -s nohup.out && fail=1
fi

cat <<\EOF > exp || fail=1
nohup: appending output to `nohup.out'
nohup: cannot run command `./k': Permission denied
EOF
# Disable these comparisons.  Too much variation in 2nd line.
# cmp exp err || fail=1
# test $fail = 1 && diff exp err 2> /dev/null

# Make sure it fails with exit status of 127 when given too few arguments.
nohup >/dev/null 2>&1
test $? = 127 || fail=1

(exit $fail); exit $fail