git/t/t1416-ref-transaction-hooks.sh
Karthik Nayak 300b38e46f refs: use transaction in refs_create_symref()
The `refs_create_symref()` function updates a symref to a given new
target. To do this, it uses a ref-backend specific function
`create_symref()`.

In the previous commits, we introduced symref support in transactions.
This means we can now use transactions to perform symref updates and
don't have to resort to `create_symref()`. Doing this allows us to
remove and cleanup `create_symref()`, which we will do in the following
commit.

Modify the expected error message for a test in
't/t0610-reftable-basics.sh', since the error is now thrown from
'refs.c'. This is because in transactional updates, F/D conflicts are
caught before we're in the reference backend.

Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-05-07 08:51:50 -07:00

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#!/bin/sh
test_description='reference transaction hooks'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
test_expect_success setup '
test_commit PRE &&
PRE_OID=$(git rev-parse PRE) &&
test_commit POST &&
POST_OID=$(git rev-parse POST)
'
test_expect_success 'hook allows updating ref if successful' '
git reset --hard PRE &&
test_hook reference-transaction <<-\EOF &&
echo "$*" >>actual
EOF
cat >expect <<-EOF &&
prepared
committed
EOF
git update-ref HEAD POST &&
test_cmp expect actual
'
test_expect_success 'hook aborts updating ref in prepared state' '
git reset --hard PRE &&
test_hook reference-transaction <<-\EOF &&
if test "$1" = prepared
then
exit 1
fi
EOF
test_must_fail git update-ref HEAD POST 2>err &&
test_grep "ref updates aborted by hook" err
'
test_expect_success 'hook gets all queued updates in prepared state' '
test_when_finished "rm actual" &&
git reset --hard PRE &&
test_hook reference-transaction <<-\EOF &&
if test "$1" = prepared
then
while read -r line
do
printf "%s\n" "$line"
done >actual
fi
EOF
cat >expect <<-EOF &&
$ZERO_OID $POST_OID HEAD
$ZERO_OID $POST_OID refs/heads/main
EOF
git update-ref HEAD POST <<-EOF &&
update HEAD $ZERO_OID $POST_OID
update refs/heads/main $ZERO_OID $POST_OID
EOF
test_cmp expect actual
'
test_expect_success 'hook gets all queued updates in committed state' '
test_when_finished "rm actual" &&
git reset --hard PRE &&
test_hook reference-transaction <<-\EOF &&
if test "$1" = committed
then
while read -r line
do
printf "%s\n" "$line"
done >actual
fi
EOF
cat >expect <<-EOF &&
$ZERO_OID $POST_OID HEAD
$ZERO_OID $POST_OID refs/heads/main
EOF
git update-ref HEAD POST &&
test_cmp expect actual
'
test_expect_success 'hook gets all queued updates in aborted state' '
test_when_finished "rm actual" &&
git reset --hard PRE &&
test_hook reference-transaction <<-\EOF &&
if test "$1" = aborted
then
while read -r line
do
printf "%s\n" "$line"
done >actual
fi
EOF
cat >expect <<-EOF &&
$ZERO_OID $POST_OID HEAD
$ZERO_OID $POST_OID refs/heads/main
EOF
git update-ref --stdin <<-EOF &&
start
update HEAD POST $ZERO_OID
update refs/heads/main POST $ZERO_OID
abort
EOF
test_cmp expect actual
'
test_expect_success 'interleaving hook calls succeed' '
test_when_finished "rm -r target-repo.git" &&
git init --bare target-repo.git &&
test_hook -C target-repo.git reference-transaction <<-\EOF &&
echo $0 "$@" >>actual
EOF
test_hook -C target-repo.git update <<-\EOF &&
echo $0 "$@" >>actual
EOF
cat >expect <<-EOF &&
hooks/update refs/tags/PRE $ZERO_OID $PRE_OID
hooks/reference-transaction prepared
hooks/reference-transaction committed
hooks/update refs/tags/POST $ZERO_OID $POST_OID
hooks/reference-transaction prepared
hooks/reference-transaction committed
EOF
git push ./target-repo.git PRE POST &&
test_cmp expect target-repo.git/actual
'
test_expect_success 'hook captures git-symbolic-ref updates' '
test_when_finished "rm actual" &&
test_hook reference-transaction <<-\EOF &&
echo "$*" >>actual
while read -r line
do
printf "%s\n" "$line"
done >>actual
EOF
git symbolic-ref refs/heads/symref refs/heads/main &&
cat >expect <<-EOF &&
prepared
$ZERO_OID ref:refs/heads/main refs/heads/symref
committed
$ZERO_OID ref:refs/heads/main refs/heads/symref
EOF
test_cmp expect actual
'
test_done