git-commit-vandalism/t/t5549-fetch-push-http.sh
Jonathan Tan 54a03bc7d9 send-pack: fix push nego. when remote has refs
Commit 477673d6f3 ("send-pack: support push negotiation", 2021-05-05)
did not test the case in which a remote advertises at least one ref. In
such a case, "remote_refs" in get_commons_through_negotiation() in
send-pack.c would also contain those refs with a zero ref->new_oid (in
addition to the refs being pushed with a nonzero ref->new_oid). Passing
them as negotiation tips to "git fetch" causes an error, so filter them
out.

(The exact error that would happen in "git fetch" in this case is a
segmentation fault, which is unwanted. This will be fixed in the
subsequent commit.)

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-07-15 11:58:52 -07:00

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#!/bin/sh
test_description='fetch/push functionality using the HTTP protocol'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-httpd.sh
start_httpd
SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server"
URI="$HTTPD_URL/smart/server"
grep_wrote () {
object_count=$1
file_name=$2
grep 'write_pack_file/wrote.*"value":"'$1'"' $2
}
setup_client_and_server () {
git init client &&
test_when_finished 'rm -rf client' &&
test_commit -C client first_commit &&
test_commit -C client second_commit &&
git init "$SERVER" &&
test_when_finished 'rm -rf "$SERVER"' &&
test_config -C "$SERVER" http.receivepack true &&
test_commit -C "$SERVER" unrelated_commit &&
git -C client push "$URI" first_commit:refs/remotes/origin/first_commit &&
git -C "$SERVER" config receive.hideRefs refs/remotes/origin/first_commit
}
test_expect_success 'push without negotiation (for comparing object counts with the next test)' '
setup_client_and_server &&
GIT_TRACE2_EVENT="$(pwd)/event" git -C client -c protocol.version=2 \
push "$URI" refs/heads/main:refs/remotes/origin/main &&
test_when_finished "rm -f event" &&
grep_wrote 6 event # 2 commits, 2 trees, 2 blobs
'
test_expect_success 'push with negotiation' '
setup_client_and_server &&
GIT_TRACE2_EVENT="$(pwd)/event" git -C client -c protocol.version=2 -c push.negotiate=1 \
push "$URI" refs/heads/main:refs/remotes/origin/main &&
test_when_finished "rm -f event" &&
grep_wrote 3 event # 1 commit, 1 tree, 1 blob
'
test_expect_success 'push with negotiation proceeds anyway even if negotiation fails' '
setup_client_and_server &&
# Use protocol v0 to make negotiation fail (because protocol v0 does
# not support the "wait-for-done" capability, which is required for
# push negotiation)
GIT_TEST_PROTOCOL_VERSION=0 GIT_TRACE2_EVENT="$(pwd)/event" git -C client -c push.negotiate=1 \
push "$URI" refs/heads/main:refs/remotes/origin/main 2>err &&
test_when_finished "rm -f event" &&
grep_wrote 6 event && # 2 commits, 2 trees, 2 blobs
cat >warning-expect <<-EOF &&
warning: --negotiate-only requires protocol v2
warning: push negotiation failed; proceeding anyway with push
EOF
grep warning: err >warning-actual &&
test_cmp warning-expect warning-actual
'
test_done