#!/bin/sh
test_description='fetch/clone from a shallow clone'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
commit() {
echo "$1" >tracked &&
git add tracked &&
git commit -m "$1"
}
test_expect_success 'setup' '
commit 1 &&
commit 2 &&
commit 3 &&
commit 4 &&
git config --global transfer.fsckObjects true &&
test_oid_cache <<-\EOF
perl sha1:s/0034shallow %s/0036unshallow %s/
perl sha256:s/004cshallow %s/004eunshallow %s/
EOF
'
test_expect_success 'setup shallow clone' '
git clone --no-local --depth=2 .git shallow &&
git --git-dir=shallow/.git log --format=%s >actual &&
test_write_lines 4 3 >expect &&
test_cmp expect actual
'
test_expect_success 'clone from shallow clone' '
git clone --no-local shallow shallow2 &&
(
cd shallow2 &&
git fsck &&
git log --format=%s >actual &&
test_write_lines 4 3 >expect &&
test_cmp expect actual
)
'
test_expect_success 'fetch from shallow clone' '
(
cd shallow &&
commit 5
) &&
(
cd shallow2 &&
git fetch &&
git fsck &&
git log --format=%s origin/main >actual &&
test_write_lines 5 4 3 >expect &&
test_cmp expect actual
)
'
test_expect_success 'fetch --depth from shallow clone' '
(
cd shallow &&
commit 6
) &&
(
cd shallow2 &&
git fetch --depth=2 &&
git fsck &&
git log --format=%s origin/main >actual &&
test_write_lines 6 5 >expect &&
test_cmp expect actual
)
'
test_expect_success 'fetch --unshallow from shallow clone' '
(
cd shallow2 &&
git fetch --unshallow &&
git fsck &&
git log --format=%s origin/main >actual &&
test_write_lines 6 5 4 3 >expect &&
test_cmp expect actual
)
'
test_expect_success 'fetch --unshallow from a full clone' '
git clone --no-local --depth=2 .git shallow3 &&
(
cd shallow3 &&
git log --format=%s >actual &&
test_write_lines 4 3 >expect &&
test_cmp expect actual &&
git -c fetch.writeCommitGraph fetch --unshallow &&
git log origin/main --format=%s >actual &&
test_write_lines 4 3 2 1 >expect &&
test_cmp expect actual
)
'
test_expect_success 'fetch something upstream has but hidden by clients shallow boundaries' '
# the blob "1" is available in .git but hidden by the
# shallow2/.git/shallow and it should be resent
! git --git-dir=shallow2/.git cat-file blob $(echo 1|git hash-object --stdin) >/dev/null &&
echo 1 >1.t &&
git add 1.t &&
git commit -m add-1-back &&
(
cd shallow2 &&
git fetch ../.git +refs/heads/main:refs/remotes/top/main &&
git fsck &&
git log --format=%s top/main >actual &&
test_write_lines add-1-back 4 3 >expect &&
test_cmp expect actual
) &&
git --git-dir=shallow2/.git cat-file blob $(echo 1|git hash-object --stdin) >/dev/null
'
test_expect_success 'fetch that requires changes in .git/shallow is filtered' '
(
cd shallow &&
git checkout --orphan no-shallow &&
commit no-shallow
) &&
git init notshallow &&
(
cd notshallow &&
git fetch ../shallow/.git refs/heads/*:refs/remotes/shallow/* &&
git for-each-ref --format="%(refname)" >actual.refs &&
echo refs/remotes/shallow/no-shallow >expect.refs &&
test_cmp expect.refs actual.refs &&
git log --format=%s shallow/no-shallow >actual &&
echo no-shallow >expect &&
test_cmp expect actual
)
'
test_expect_success 'fetch --update-shallow' '
(
cd shallow &&
git checkout main &&
commit 7 &&
git tag -m foo heavy-tag HEAD^ &&
git tag light-tag HEAD^:tracked
) &&
(
cd notshallow &&
git fetch --update-shallow ../shallow/.git refs/heads/*:refs/remotes/shallow/* &&
git fsck &&
git for-each-ref --sort=refname --format="%(refname)" >actual.refs &&
cat <<-\EOF >expect.refs &&
refs/remotes/shallow/main
refs/remotes/shallow/no-shallow
refs/tags/heavy-tag
refs/tags/light-tag
EOF
test_cmp expect.refs actual.refs &&
git log --format=%s shallow/main >actual &&
test_write_lines 7 6 5 4 3 >expect &&
test_cmp expect actual
)
'
test_expect_success 'fetch --update-shallow into a repo with submodules' '
test_config_global protocol.file.allow always &&
git init a-submodule &&
test_commit -C a-submodule foo &&
test_when_finished "rm -rf repo-with-sub" &&
git init repo-with-sub &&
git -C repo-with-sub submodule add ../a-submodule a-submodule &&
git -C repo-with-sub commit -m "added submodule" &&
git -C repo-with-sub fetch --update-shallow ../shallow/.git refs/heads/*:refs/remotes/shallow/*
'
test_expect_success 'fetch --update-shallow a commit that is also a shallow point into a repo with submodules' '
test_when_finished "rm -rf repo-with-sub" &&
git init repo-with-sub &&
git -c protocol.file.allow=always -C repo-with-sub \
submodule add ../a-submodule a-submodule &&
git -C repo-with-sub commit -m "added submodule" &&
SHALLOW=$(cat shallow/.git/shallow) &&
git -C repo-with-sub fetch --update-shallow ../shallow/.git "$SHALLOW":refs/heads/a-shallow
'
test_expect_success 'fetch --update-shallow (with fetch.writeCommitGraph)' '
(
cd shallow &&
git checkout main &&
commit 8 &&
git tag -m foo heavy-tag-for-graph HEAD^ &&
git tag light-tag-for-graph HEAD^:tracked
) &&
test_config -C notshallow fetch.writeCommitGraph true &&
(
cd notshallow &&
git fetch --update-shallow ../shallow/.git refs/heads/*:refs/remotes/shallow/* &&
git fsck &&
git for-each-ref --sort=refname --format="%(refname)" >actual.refs &&
cat <<-EOF >expect.refs &&
refs/remotes/shallow/main
refs/remotes/shallow/no-shallow
refs/tags/heavy-tag
refs/tags/heavy-tag-for-graph
refs/tags/light-tag
refs/tags/light-tag-for-graph
EOF
test_cmp expect.refs actual.refs &&
git log --format=%s shallow/main >actual &&
test_write_lines 8 7 6 5 4 3 >expect &&
test_cmp expect actual
)
'
test_expect_success POSIXPERM,SANITY 'shallow fetch from a read-only repo' '
cp -R .git read-only.git &&
test_when_finished "find read-only.git -type d -print | xargs chmod +w" &&
find read-only.git -print | xargs chmod -w &&
git clone --no-local --depth=2 read-only.git from-read-only &&
git --git-dir=from-read-only/.git log --format=%s >actual &&
test_write_lines add-1-back 4 >expect &&
test_cmp expect actual
'
test_expect_success '.git/shallow is edited by repack' '
git init shallow-server &&
test_commit -C shallow-server A &&
test_commit -C shallow-server B &&
git -C shallow-server checkout -b branch &&
test_commit -C shallow-server C &&
test_commit -C shallow-server E &&
test_commit -C shallow-server D &&
d="$(git -C shallow-server rev-parse --verify D^0)" &&
git -C shallow-server checkout main &&
git clone --depth=1 --no-tags --no-single-branch \
"file://$PWD/shallow-server" shallow-client &&
: now remove the branch and fetch with prune &&
git -C shallow-server branch -D branch &&
git -C shallow-client fetch --prune --depth=1 \
origin "+refs/heads/*:refs/remotes/origin/*" &&
git -C shallow-client repack -adfl &&
test_must_fail git -C shallow-client rev-parse --verify $d^0 &&
! grep $d shallow-client/.git/shallow &&
git -C shallow-server branch branch-orig $d &&
git -C shallow-client fetch --prune --depth=2 \
origin "+refs/heads/*:refs/remotes/origin/*"
'
. "$TEST_DIRECTORY"/lib-httpd.sh
start_httpd
REPO="$HTTPD_DOCUMENT_ROOT_PATH/repo"
test_expect_success 'shallow fetches check connectivity before writing shallow file' '
rm -rf "$REPO" client &&
git init "$REPO" &&
test_commit -C "$REPO" one &&
test_commit -C "$REPO" two &&
test_commit -C "$REPO" three &&
git init client &&
# Use protocol v2 to ensure that shallow information is sent exactly
# once by the server, since we are planning to manipulate it.
git -C "$REPO" config protocol.version 2 &&
git -C client config protocol.version 2 &&
git -C client fetch --depth=2 "$HTTPD_URL/one_time_perl/repo" main:a_branch &&
# Craft a situation in which the server sends back an unshallow request
# with an empty packfile. This is done by refetching with a shorter
# depth (to ensure that the packfile is empty), and overwriting the
# shallow line in the response with the unshallow line we want.
printf "$(test_oid perl)" \
"$(git -C "$REPO" rev-parse HEAD)" \
"$(git -C "$REPO" rev-parse HEAD^)" \
>"$HTTPD_ROOT_PATH/one-time-perl" &&
test_must_fail env GIT_TEST_SIDEBAND_ALL=0 git -C client \
fetch --depth=1 "$HTTPD_URL/one_time_perl/repo" \
main:a_branch &&
# Ensure that the one-time-perl script was used.
! test -e "$HTTPD_ROOT_PATH/one-time-perl" &&
# Ensure that the resulting repo is consistent, despite our failure to
# fetch.
git -C client fsck
'
# DO NOT add non-httpd-specific tests here, because the last part of this
# test script is only executed when httpd is available and enabled.
test_done
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