#! /bin/sh
# Copyright (C) 2009, 2010  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 parallel-tests features:
# - concurrent parallel execution

parallel_tests=yes
required=GNUmake
. ./defs || Exit 1

# This test does not work well if $MAKE contains -j.
case $MAKE in
*\ -j*) Exit 77 ;;
esac

set -e

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

cat > Makefile.am << 'END'
TESTS =
END

for i in 1 2 3 4 5 6 7 8; do
  echo "TESTS += foo$i.test" >> Makefile.am
  cat >foo$i.test <<'END'
#! /bin/sh
echo "this is $0"
# hack around maintainer-check check:
sleep='sleep '1
$sleep
exit 0
END
  chmod a+x foo$i.test
done

$ACLOCAL
$AUTOCONF
$AUTOMAKE -a

for build in serial parallel; do
  mkdir $build
  cd $build
  ../configure
  $MAKE
  cd ..
done

cd serial
$MAKE -j1 check &
cd ../parallel
$sleep
# Use append mode here to avoid dropping output.
# Yes, this actually happens.
: >stdout
$MAKE -j4 check >> stdout
cd ..
# Ensure the tests are really being run in parallel mode: if this is
# the case, the serial run of the dummy testsuite started above should
# still be ongoing when the parallel one has terminated.
kill -0 $!
cat parallel/stdout
test `grep -c PASS parallel/stdout` -eq 8

# Wait long enough so that there are no open files any more when the
# post-test cleanup runs.  But exit after we've waited for two minutes
# or more, to avoid testsuite hangs in unusual situations (this has
# already happened).
i=1
while test ! -f serial/test-suite.log && test $i -le 120; do
  i=`expr $i + 1`
  sleep '1' # Extra quoting to please maintainer-check.
done
$sleep

: