#! /bin/sh
# Copyright (C) 2011 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/>.

# Check that the parallel-tests driver removed incomplete log files
# when interrupt upon some signal.  This test is definitely too hacky,
# but we couldn't find a better way to deal with inter-processes
# signals and the whole process-synchronization mess.

am_parallel_tests=yes
. ./defs || Exit 1

plan_ 16

cat >> configure.in << 'END'
AC_OUTPUT
END

cat > Makefile.am << 'END'
TESTS = foo.test
## Provide more debugging info.
TEST_LOG_COMPILER = $(SHELL) -x
## Required by foo.test; see below.
AM_TESTS_FD_REDIRECT = 9>&1
END

# This is hacky and ugly, but has the great advantage of avoiding us a lot
# of pain with background processes and related synchronization issues.

cat - "$am_scriptdir"/test-driver > test-driver <<'END'
#!/bin/sh
echo $$ > pid
END

cat > foo.test << 'END'
#!/bin/sh

echo "foo is starting to run"

ls -l >&9 || exit 99

test $sig -gt 0 || {
  echo "Bailout! \$sig not exported to test script" >&9
  exit 99
}

res=ok; cat foo.log >&9 || res="not ok"
echo "$res - logfile created and readable [SIG $sig]" >&9

res=ok; grep '^foo is starting to run$' foo.log >&2 || res='not ok'
echo "$res - logfile contains output from test script [SIG $sig]" >&9

cat pid >&9 \
  || echo "Bailout! cannot get PID of test driver" >&9
kill -$sig `cat pid` \
  || echo "Bailout! cannot send signal $sig to test driver" >&9
END
chmod a+x foo.test

$ACLOCAL  || fatal_ "aclocal failed"
$AUTOCONF || fatal_ "autoconf failed"
$AUTOMAKE || fatal_ "automake failed"

./configure || fatal_ "./configure failed"

# The only signals that can be trapped portable are 1 "SIGHUP",
# 2 "SIGINT", 13 "SIGPIPE" and 15 "SIGTERM".
trapped_signals='1 2 13 15'

for sig in $trapped_signals; do
  if is_blocked_signal $sig; then
    for i in 1 2 3 4; do echo "ok # SKIP signal $sig is blocked"; done
    continue
  fi
  rm -f pid fail *.log
  r=ok; env sig=$sig $MAKE check && r='not ok'
  echo "$r - signal $sig to test driver causes \"make check\" to fail"
  ls -l
  # These files shouldn't exist, but in case they do, their content might
  # provide helpful information about the causes of the failure(s).
  cat foo.log || :
  cat test-suite.log || :
  r=ok; ls | $EGREP 'foo.*\.(log|tmp)' && r='not ok'
  echo "$r - test driver clean up log and tmp files after signal $sig"
done

: