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#!/bin/sh
# test nohup

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 stdout is redirected.
if test -t 1; then
  test "`cat nohup.out`" = stdout || fail=1
  cat <<\EOF > exp || fail=1
nohup: appending output to `nohup.out'
stderr
EOF
else
  # Here it should not even exist.
  test -f nohup.out && fail=1
  cat <<\EOF > exp || fail=1
stderr
EOF
fi

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