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#! /bin/sh
# Copyright (C) 2012 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 harness does not hit errors due to
# an exceeded command line length when there are many tests.
# For automake bug#7868. This test is currently expected to fail.
. ./defs || Exit 1
cat >> configure.ac << 'END'
AC_OUTPUT
END
cat > Makefile.am <<'END'
# Sanity check that the $(TESTS) is going to exceed the system
# command line length.
# Extra quoting and indirections below are required to ensure the
# various make implementations (e.g, GNU make or Sun Distributed Make)
# will truly spawn a shell to execute this command, instead of relying
# on optimizations that might mask the "Argument list too long" error
# we expect.
this-will-fail:
@":" && ":" $(TEST_LOGS)
TEST_LOG_COMPILER = true
include list-of-tests.am
# So that we won't have to create a ton of dummy test cases.
$(TESTS):
END
# The real instance will be dynamically created later.
echo TESTS = foo.test > list-of-tests.am
$ACLOCAL && $AUTOCONF && $AUTOMAKE -a \
|| framework_failure_ "unexpected autotools failure"
./configure \
|| framework_failure_ "unexpected configure failure"
# We want to hit the system command-line length limit without hitting
# the filename length limit or the PATHMAX limit; so we use longish
# (but not too long) names for the testcase, and place them in a nested
# (but not too deeply) directory.
# We also prefer to use the minimal(ish) number of test cases that can
# make us hit the command-line length limit, since the more the test
# cases are, the more time "automake" and "make check" will take to run
# (especially on Cygwin and MinGW/MSYS).
tname="wow-this-is-a-very-long-name-for-a-simple-dummy-test-case"
dname="and-this-too-is-a-very-long-name-for-a-dummy-directory"
deepdir=.
depth=0
for i in 1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 17 18 19 29 21 22 23 24; do
new_deepdir=$deepdir/$dname.d$i
mkdir $new_deepdir || break
tmpfile=$new_deepdir/$tname-some-more-chars-for-good-measure
if touch $tmpfile; then
rm -f $tmpfile || Exit 99
else
rmdir $new_deepdir || Exit 99
fi
deepdir=$new_deepdir
unset tmpfile new_deepdir
depth=$i
done
cat <<END
*********************************************************************
Our tests will be in the following directory (depth = $depth)
*********************************************************************
$deepdir
*********************************************************************
END
setup_data ()
{
# Use perl, not awk, to avoid errors like "awk: string too long"
# (seen e.g. with Solaris 10 /usr/bin/awk).
count=$count deepdir=$deepdir tname=$tname $PERL -e '
use warnings FATAL => "all";
use strict;
print "TESTS = \\\n";
my $i = 0;
while (++$i)
{
print " $ENV{deepdir}/$ENV{tname}-$i.test";
if ($i >= $ENV{count})
{
print "\n";
last;
}
else
{
print " \\\n";
}
}
' > list-of-tests.am || Exit 99
sed 20q list-of-tests.am || Exit 99 # For debugging.
$AUTOMAKE Makefile \
|| framework_failure_ "unexpected automake failure"
./config.status Makefile \
|| framework_failure_ "unexpected config.status failure"
}
for count in 1 2 4 8 12 16 20 24 28 32 48 64 96 128 E_HUGE; do
test $count = E_HUGE && break
count=$(($count * 100))
setup_data
if $MAKE this-will-fail; then
continue
else
# We have managed to find a number of test cases large enough to
# hit the system command-line limits; we can stop. But first, for
# good measure, increase the number of tests of some 20%, to be
# "even more sure" of really tickling command line length limits.
count=$(($count * 12))
count=$(($count / 10))
setup_data
break
fi
done
if test $count = E_HUGE; then
framework_failure_ "system has a too-high limit on command line length"
else
cat <<END
*********************************************************************
Number of tests we will use: $count
*********************************************************************
END
fi
env TESTS=$deepdir/$tname-1.test $MAKE -e check \
&& test -f $deepdir/$tname-1.log \
|| framework_failure_ "\"make check\" with one single tests"
rm -f $deepdir/* || Exit 99
$MAKE check > stdout || { cat stdout; Exit 1; }
cat stdout
grep "^# TOTAL: $count$" stdout
grep "^# PASS: $count$" stdout
grep "^PASS: .*$tname-[0-9][0-9]*\.test" stdout > grp
ls -1 $deepdir | grep '\.log$' > lst
sed 20q lst # For debugging.
sed 20q grp # Likewise.
test $(cat <grp | wc -l) -eq $count
test $(cat <lst | wc -l) -eq $count
# We need to simulate a failure of two tests.
st=0
env TESTS="$deepdir/$tname-1.test $deepdir/$tname-2.test" \
TEST_LOG_COMPILER=false $MAKE -e check > stdout && st=1
cat stdout
test $(grep -c '^FAIL:' stdout) -eq 2 || st=1
test $st -eq 0 || fatal_ "couldn't simulate failure of two tests"
unset st
$MAKE recheck > stdout || { cat stdout; Exit 1; }
cat stdout
grep "^PASS: .*$tname-1\.test" stdout
grep "^PASS: .*$tname-2\.test" stdout
test $(LC_ALL=C grep -c "^[A-Z][A-Z]*:" stdout) -eq 2
grep "^# TOTAL: 2$" stdout
grep "^# PASS: 2$" stdout
# "make clean" might ignore some failures, so we prefer to also grep its
# output to ensure that no "Argument list too long" error was encountered.
$MAKE clean >output 2>&1 || { cat output; Exit 1; }
cat output
grep -i 'list.* too long' output && Exit 1
ls $deepdir | grep '\.log$' && Exit 1
:
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