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git/t/t5401-update-hooks.sh
Shawn O. Pearce f43cd49fb8 Change {pre,post}-receive hooks to use stdin
Sergey Vlasov, Andy Parkins and Alex Riesen all pointed out that it
is possible for a single invocation of receive-pack to be given more
refs than the OS might allow us to pass as command line parameters
to a single hook invocation.

We don't want to break these up into multiple invocations (like
xargs might do) as that makes it impossible for the pre-receive
hook to verify multiple related ref updates occur at the same time,
and it makes it harder for post-receive to send out a single batch
notification.

Instead we pass the reference data on a pipe connected to the
hook's stdin, supplying one ref per line to the hook.  This way a
single hook invocation can obtain an infinite amount of ref data,
without bumping into any operating system limits.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-03-11 22:56:03 -07:00

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#!/bin/sh
#
# Copyright (c) 2006 Shawn O. Pearce
#
test_description='Test the update hook infrastructure.'
. ./test-lib.sh
test_expect_success setup '
echo This is a test. >a &&
git-update-index --add a &&
tree0=$(git-write-tree) &&
commit0=$(echo setup | git-commit-tree $tree0) &&
echo We hope it works. >a &&
git-update-index a &&
tree1=$(git-write-tree) &&
commit1=$(echo modify | git-commit-tree $tree1 -p $commit0) &&
git-update-ref refs/heads/master $commit0 &&
git-update-ref refs/heads/tofail $commit1 &&
git-clone ./. victim &&
GIT_DIR=victim/.git git-update-ref refs/heads/tofail $commit1 &&
git-update-ref refs/heads/master $commit1 &&
git-update-ref refs/heads/tofail $commit0
'
cat >victim/.git/hooks/pre-receive <<'EOF'
#!/bin/sh
printf "$@" >>$GIT_DIR/pre-receive.args
cat - >$GIT_DIR/pre-receive.stdin
echo STDOUT pre-receive
echo STDERR pre-receive >&2
EOF
chmod u+x victim/.git/hooks/pre-receive
cat >victim/.git/hooks/update <<'EOF'
#!/bin/sh
echo "$@" >>$GIT_DIR/update.args
read x; printf "$x" >$GIT_DIR/update.stdin
echo STDOUT update $1
echo STDERR update $1 >&2
test "$1" = refs/heads/master || exit
EOF
chmod u+x victim/.git/hooks/update
cat >victim/.git/hooks/post-receive <<'EOF'
#!/bin/sh
printf "$@" >>$GIT_DIR/post-receive.args
cat - >$GIT_DIR/post-receive.stdin
echo STDOUT post-receive
echo STDERR post-receive >&2
EOF
chmod u+x victim/.git/hooks/post-receive
cat >victim/.git/hooks/post-update <<'EOF'
#!/bin/sh
echo "$@" >>$GIT_DIR/post-update.args
read x; printf "$x" >$GIT_DIR/post-update.stdin
echo STDOUT post-update
echo STDERR post-update >&2
EOF
chmod u+x victim/.git/hooks/post-update
test_expect_failure push '
git-send-pack --force ./victim/.git master tofail >send.out 2>send.err
'
test_expect_success 'updated as expected' '
test $(GIT_DIR=victim/.git git-rev-parse master) = $commit1 &&
test $(GIT_DIR=victim/.git git-rev-parse tofail) = $commit1
'
test_expect_success 'hooks ran' '
test -f victim/.git/pre-receive.args &&
test -f victim/.git/pre-receive.stdin &&
test -f victim/.git/update.args &&
test -f victim/.git/update.stdin &&
test -f victim/.git/post-receive.args &&
test -f victim/.git/post-receive.stdin &&
test -f victim/.git/post-update.args &&
test -f victim/.git/post-update.stdin
'
test_expect_success 'pre-receive hook input' '
(echo $commit0 $commit1 refs/heads/master;
echo $commit1 $commit0 refs/heads/tofail
) | git diff - victim/.git/pre-receive.stdin
'
test_expect_success 'update hook arguments' '
(echo refs/heads/master $commit0 $commit1;
echo refs/heads/tofail $commit1 $commit0
) | git diff - victim/.git/update.args
'
test_expect_success 'post-receive hook input' '
echo $commit0 $commit1 refs/heads/master |
git diff - victim/.git/post-receive.stdin
'
test_expect_success 'post-update hook arguments' '
echo refs/heads/master |
git diff - victim/.git/post-update.args
'
test_expect_success 'all hook stdin is /dev/null' '
! test -s victim/.git/update.stdin &&
! test -s victim/.git/post-update.stdin
'
test_expect_success 'all *-receive hook args are empty' '
! test -s victim/.git/pre-receive.args &&
! test -s victim/.git/post-receive.args
'
test_expect_failure 'send-pack produced no output' '
test -s send.out
'
cat <<EOF >expect
STDOUT pre-receive
STDERR pre-receive
STDOUT update refs/heads/master
STDERR update refs/heads/master
STDOUT update refs/heads/tofail
STDERR update refs/heads/tofail
STDOUT post-receive
STDERR post-receive
STDOUT post-update
STDERR post-update
EOF
test_expect_success 'send-pack stderr contains hook messages' '
egrep ^STD send.err >actual &&
git diff - actual <expect
'
test_done