Hash :
bb9e2e62
Author :
Date :
2012-01-17T13:46:11
tap: some makes in parallel mode unconditionally serialize output Some make implementations (among them, FreeBSD make, NetBSD make, and Solaris Distributed Make), when run in parallel mode, serialize the output from their targets' recipes unconditionally. This has the nasty side effect that the user won't see the partial results of a TAP test until the test has terminated. This is not something our TAP driver script can work around unfortunately; in fact, the driver is sending out its output progressively and "in sync" with test execution -- it is make that is stowing such output away instead of presenting it to the user as soon as it gets it. So we content ourself with working around the issue in our testsuite, to at least avoid failures we could do nothing to prevent. * tests/tap-realtime.test: Skip this test if the make program used is a non-GNU make running in parallel mode. And if Sun dmake is being used, try to force it to run in serial mode, by exporting the 'DMAKE_MODE' environment variable to "serial".
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#! /bin/sh
# Copyright (C) 2011, 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/>.
# TAP support:
# - testsuite progress on console should happen mostly "in real time";
# i.e., it's not acceptable for the driver to wait the end of the
# script to start displaying results from it.
# FIXME: this test uses expect(1) to ensure line buffering from make and
# children, and is pretty hacky and complex; is there a better way to
# accomplish the checks done here?
am_parallel_tests=yes
. ./defs || Exit 1
cat >expect-check <<'END'
eval spawn $env(SHELL) -c ":"
expect eof
END
expect -f expect-check || {
echo "$me: failed to find a working expect program" >&2
Exit 77
}
rm -f expect-check
# Unfortunately, some make implementations (among them, FreeBSD make,
# NetBSD make, and Solaris Distributed make), when run in parallel mode,
# serialize the output from their targets' recipes unconditionally. In
# such a situation, there's no way the partial results of a TAP test can
# be displayed until the test has terminated. And this is not something
# our TAP driver script can work around; in fact, the driver *is* sending
# out its output progressively and "in sync" with test execution -- it is
# make that is stowing such output away instead of presenting it to the
# user as soon as it gets it.
if using_gmake; then :; else
case $MAKE in
*\ -j*) skip_ "doesn't with non-GNU concurrent make";;
esac
# Prevent Sun Distributed Make from trying to run in parallel.
DMAKE_MODE=serial; export DMAKE_MODE
fi
cat > Makefile.am << 'END'
TESTS = all.test
END
. "$testsrcdir"/tap-setup.sh || fatal_ "sourcing tap-setup.sh"
cat > all.test <<'END'
#! /bin/sh
echo 1..3
# Creative quoting to placate maintainer-check.
sleep="sleep "3
# The awk+shell implementation of the TAP driver must "read ahead" of one
# line in order to catch the exit status of the test script it runs. So
# be sure to echo one "dummy" line after each result line in order not to
# cause false positives.
echo ok 1 - foo
echo DUMMY
$sleep
test -f ok-1 || { echo 'Bail out!'; exit 1; }
echo ok 2 - bar
echo DUMMY
$sleep
test -f ok-2 || { echo 'Bail out!'; exit 1; }
echo ok 3 - baz
echo DUMMY
$sleep
test -f ok-3 || { echo 'Bail out!'; exit 1; }
: > all-is-well
END
chmod a+x all.test
cat > expect-make <<'END'
eval spawn $env(MAKE) check
expect {
"PASS: all.test 1 - foo" {
open "ok-1" "w"
exp_continue
}
"PASS: all.test 2 - bar" {
open "ok-2" "w"
exp_continue
}
"PASS: all.test 3 - baz" {
open "ok-3" "w"
exp_continue
}
"Testsuite summary" {
exit 0
}
timeout {
puts "expect timed out"
exit 1
}
default {
puts "expect error"
exit 1
}
}
END
# Expect should simulate a tty as stdout, which should ensure a
# line-buffered output.
MAKE=$MAKE expect -f expect-make
test -f all-is-well
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