git/t/lib-git-daemon.sh
Ævar Arnfjörð Bjarmason 3b072c577b tests: replace test_tristate with "git env--helper"
The test_tristate helper introduced in 83d842dc8c ("tests: turn on
network daemon tests by default", 2014-02-10) can now be better
implemented with "git env--helper" to give the variables in question
the standard boolean behavior.

The reason for the "tristate" was to have all of false/true/auto,
where "auto" meant either "false" or "true" depending on what the
fallback was. With the --default option to "git env--helper" we can
simply have e.g. GIT_TEST_HTTPD where we know if it's true because the
user asked explicitly ("true"), or true implicitly ("auto").

This breaks backwards compatibility for explicitly setting "auto" for
these variables, but I don't think anyone cares. That was always
intended to be internal.

This means the test_normalize_bool() code in test-lib-functions.sh
goes away in addition to test_tristate(). We still need the
test_skip_or_die() helper, but now it takes the variable name instead
of the value, and uses "git env--bool" to distinguish a default "true"
from an explicit "true" (in those "explicit true" cases we want to
fail the test in question).

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-06-21 09:42:49 -07:00

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# Shell library to run git-daemon in tests. Ends the test early if
# GIT_TEST_GIT_DAEMON is not set.
#
# Usage:
#
# . ./test-lib.sh
# . "$TEST_DIRECTORY"/lib-git-daemon.sh
# start_git_daemon
#
# test_expect_success '...' '
# ...
# '
#
# test_expect_success ...
#
# test_done
if ! git env--helper --type=bool --default=true --exit-code GIT_TEST_GIT_DAEMON
then
skip_all="git-daemon testing disabled (unset GIT_TEST_GIT_DAEMON to enable)"
test_done
fi
if test_have_prereq !PIPE
then
test_skip_or_die GIT_TEST_GIT_DAEMON "file system does not support FIFOs"
fi
test_set_port LIB_GIT_DAEMON_PORT
GIT_DAEMON_PID=
GIT_DAEMON_PIDFILE="$PWD"/daemon.pid
GIT_DAEMON_DOCUMENT_ROOT_PATH="$PWD"/repo
GIT_DAEMON_HOST_PORT=127.0.0.1:$LIB_GIT_DAEMON_PORT
GIT_DAEMON_URL=git://$GIT_DAEMON_HOST_PORT
registered_stop_git_daemon_atexit_handler=
start_git_daemon() {
if test -n "$GIT_DAEMON_PID"
then
error "start_git_daemon already called"
fi
mkdir -p "$GIT_DAEMON_DOCUMENT_ROOT_PATH"
# One of the test scripts stops and then re-starts 'git daemon'.
# Don't register and then run the same atexit handlers several times.
if test -z "$registered_stop_git_daemon_atexit_handler"
then
test_atexit 'stop_git_daemon'
registered_stop_git_daemon_atexit_handler=AlreadyDone
fi
say >&3 "Starting git daemon ..."
mkfifo git_daemon_output
${LIB_GIT_DAEMON_COMMAND:-git daemon} \
--listen=127.0.0.1 --port="$LIB_GIT_DAEMON_PORT" \
--reuseaddr --verbose --pid-file="$GIT_DAEMON_PIDFILE" \
--base-path="$GIT_DAEMON_DOCUMENT_ROOT_PATH" \
"$@" "$GIT_DAEMON_DOCUMENT_ROOT_PATH" \
>&3 2>git_daemon_output &
GIT_DAEMON_PID=$!
{
read -r line <&7
printf "%s\n" "$line" >&4
cat <&7 >&4 &
} 7<git_daemon_output &&
# Check expected output
if test x"$(expr "$line" : "\[[0-9]*\] \(.*\)")" != x"Ready to rumble"
then
kill "$GIT_DAEMON_PID"
wait "$GIT_DAEMON_PID"
unset GIT_DAEMON_PID
test_skip_or_die GIT_TEST_GIT_DAEMON \
"git daemon failed to start"
fi
}
stop_git_daemon() {
if test -z "$GIT_DAEMON_PID"
then
return
fi
# kill git-daemon child of git
say >&3 "Stopping git daemon ..."
kill "$GIT_DAEMON_PID"
wait "$GIT_DAEMON_PID" >&3 2>&4
ret=$?
if ! test_match_signal 15 $ret
then
error "git daemon exited with status: $ret"
fi
kill "$(cat "$GIT_DAEMON_PIDFILE")" 2>/dev/null
GIT_DAEMON_PID=
rm -f git_daemon_output "$GIT_DAEMON_PIDFILE"
}
# A stripped-down version of a netcat client, that connects to a "host:port"
# given in $1, sends its stdin followed by EOF, then dumps the response (until
# EOF) to stdout.
fake_nc() {
if ! test_declared_prereq FAKENC
then
echo >&4 "fake_nc: need to declare FAKENC prerequisite"
return 127
fi
perl -Mstrict -MIO::Socket::INET -e '
my $s = IO::Socket::INET->new(shift)
or die "unable to open socket: $!";
print $s <STDIN>;
$s->shutdown(1);
print <$s>;
' "$@"
}
test_lazy_prereq FAKENC '
perl -MIO::Socket::INET -e "exit 0"
'