#!/bin/sh
#
# Copyright (C) 2006 Martin Waitz <[email protected]>
#
test_description='test clone --reference'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
base_dir=$(pwd)
U=$base_dir/UPLOAD_LOG
# create a commit in repo $1 with name $2
commit_in () {
(
cd "$1" &&
echo "$2" >"$2" &&
git add "$2" &&
git commit -m "$2"
)
}
# check that there are $2 loose objects in repo $1
test_objcount () {
echo "$2" >expect &&
git -C "$1" count-objects >actual.raw &&
cut -d' ' -f1 <actual.raw >actual &&
test_cmp expect actual
}
test_expect_success 'preparing first repository' '
test_create_repo A &&
commit_in A file1
'
test_expect_success 'preparing second repository' '
git clone A B &&
commit_in B file2 &&
git -C B repack -ad &&
git -C B prune
'
test_expect_success 'cloning with reference (-l -s)' '
git clone -l -s --reference B A C
'
test_expect_success 'existence of info/alternates' '
test_line_count = 2 C/.git/objects/info/alternates
'
test_expect_success 'pulling from reference' '
git -C C pull ../B main
'
test_expect_success 'that reference gets used' '
test_objcount C 0
'
test_expect_success 'cloning with reference (no -l -s)' '
GIT_TRACE_PACKET=$U.D git clone --reference B "file://$(pwd)/A" D
'
test_expect_success 'fetched no objects' '
test -s "$U.D" &&
! grep " want" "$U.D"
'
test_expect_success 'existence of info/alternates' '
test_line_count = 1 D/.git/objects/info/alternates
'
test_expect_success 'pulling from reference' '
git -C D pull ../B main
'
test_expect_success 'that reference gets used' '
test_objcount D 0
'
test_expect_success 'updating origin' '
commit_in A file3 &&
git -C A repack -ad &&
git -C A prune
'
test_expect_success 'pulling changes from origin' '
git -C C pull --no-rebase origin
'
# the 2 local objects are commit and tree from the merge
test_expect_success 'that alternate to origin gets used' '
test_objcount C 2
'
test_expect_success 'pulling changes from origin' '
git -C D pull --no-rebase origin
'
# the 5 local objects are expected; file3 blob, commit in A to add it
# and its tree, and 2 are our tree and the merge commit.
test_expect_success 'check objects expected to exist locally' '
test_objcount D 5
'
test_expect_success 'preparing alternate repository #1' '
test_create_repo F &&
commit_in F file1
'
test_expect_success 'cloning alternate repo #2 and adding changes to repo #1' '
git clone F G &&
commit_in F file2
'
test_expect_success 'cloning alternate repo #1, using #2 as reference' '
git clone --reference G F H
'
test_expect_success 'cloning with reference being subset of source (-l -s)' '
git clone -l -s --reference A B E
'
test_expect_success 'cloning with multiple references drops duplicates' '
git clone -s --reference B --reference A --reference B A dups &&
test_line_count = 2 dups/.git/objects/info/alternates
'
test_expect_success 'clone with reference from a tagged repository' '
(
cd A && git tag -a -m tagged HEAD
) &&
git clone --reference=A A I
'
test_expect_success 'prepare branched repository' '
git clone A J &&
(
cd J &&
git checkout -b other main^ &&
echo other >otherfile &&
git add otherfile &&
git commit -m other &&
git checkout main
)
'
test_expect_success 'fetch with incomplete alternates' '
git init K &&
echo "$base_dir/A/.git/objects" >K/.git/objects/info/alternates &&
(
cd K &&
git remote add J "file://$base_dir/J" &&
GIT_TRACE_PACKET=$U.K git fetch J
) &&
main_object=$(cd A && git for-each-ref --format="%(objectname)" refs/heads/main) &&
test -s "$U.K" &&
! grep " want $main_object" "$U.K" &&
tag_object=$(cd A && git for-each-ref --format="%(objectname)" refs/tags/HEAD) &&
! grep " want $tag_object" "$U.K"
'
test_expect_success 'clone using repo with gitfile as a reference' '
git clone --separate-git-dir=L A M &&
git clone --reference=M A N &&
echo "$base_dir/L/objects" >expected &&
test_cmp expected "$base_dir/N/.git/objects/info/alternates"
'
test_expect_success 'clone using repo pointed at by gitfile as reference' '
git clone --reference=M/.git A O &&
echo "$base_dir/L/objects" >expected &&
test_cmp expected "$base_dir/O/.git/objects/info/alternates"
'
test_expect_success 'clone and dissociate from reference' '
git init P &&
(
cd P && test_commit one
) &&
git clone P Q &&
(
cd Q && test_commit two
) &&
git clone --no-local --reference=P Q R &&
git clone --no-local --reference=P --dissociate Q S &&
# removing the reference P would corrupt R but not S
rm -fr P &&
test_must_fail git -C R fsck &&
git -C S fsck
'
test_expect_success 'clone, dissociate from partial reference and repack' '
rm -fr P Q R &&
git init P &&
(
cd P &&
test_commit one &&
git repack &&
test_commit two &&
git repack
) &&
git clone --bare P Q &&
(
cd P &&
git checkout -b second &&
test_commit three &&
git repack
) &&
git clone --bare --dissociate --reference=P Q R &&
ls R/objects/pack/*.pack >packs.txt &&
test_line_count = 1 packs.txt
'
test_expect_success 'clone, dissociate from alternates' '
rm -fr A B C &&
test_create_repo A &&
commit_in A file1 &&
git clone --reference=A A B &&
test_line_count = 1 B/.git/objects/info/alternates &&
git clone --local --dissociate B C &&
! test -f C/.git/objects/info/alternates &&
( cd C && git fsck )
'
test_expect_success 'setup repo with garbage in objects/*' '
git init S &&
(
cd S &&
test_commit A &&
cd .git/objects &&
>.some-hidden-file &&
>some-file &&
mkdir .some-hidden-dir &&
>.some-hidden-dir/some-file &&
>.some-hidden-dir/.some-dot-file &&
mkdir some-dir &&
>some-dir/some-file &&
>some-dir/.some-dot-file
)
'
test_expect_success 'clone a repo with garbage in objects/*' '
for option in --local --no-hardlinks --shared --dissociate
do
git clone $option S S$option || return 1 &&
git -C S$option fsck || return 1
done &&
find S-* -name "*some*" | sort >actual &&
cat >expected <<-EOF &&
S--dissociate/.git/objects/.some-hidden-dir
S--dissociate/.git/objects/.some-hidden-dir/.some-dot-file
S--dissociate/.git/objects/.some-hidden-dir/some-file
S--dissociate/.git/objects/.some-hidden-file
S--dissociate/.git/objects/some-dir
S--dissociate/.git/objects/some-dir/.some-dot-file
S--dissociate/.git/objects/some-dir/some-file
S--dissociate/.git/objects/some-file
S--local/.git/objects/.some-hidden-dir
S--local/.git/objects/.some-hidden-dir/.some-dot-file
S--local/.git/objects/.some-hidden-dir/some-file
S--local/.git/objects/.some-hidden-file
S--local/.git/objects/some-dir
S--local/.git/objects/some-dir/.some-dot-file
S--local/.git/objects/some-dir/some-file
S--local/.git/objects/some-file
S--no-hardlinks/.git/objects/.some-hidden-dir
S--no-hardlinks/.git/objects/.some-hidden-dir/.some-dot-file
S--no-hardlinks/.git/objects/.some-hidden-dir/some-file
S--no-hardlinks/.git/objects/.some-hidden-file
S--no-hardlinks/.git/objects/some-dir
S--no-hardlinks/.git/objects/some-dir/.some-dot-file
S--no-hardlinks/.git/objects/some-dir/some-file
S--no-hardlinks/.git/objects/some-file
EOF
test_cmp expected actual
'
test_expect_success SYMLINKS 'setup repo with manually symlinked or unknown files at objects/' '
git init T &&
(
cd T &&
git config gc.auto 0 &&
test_commit A &&
git gc &&
test_commit B &&
cd .git/objects &&
mv pack packs &&
ln -s packs pack &&
find ?? -type d >loose-dirs &&
last_loose=$(tail -n 1 loose-dirs) &&
mv $last_loose a-loose-dir &&
ln -s a-loose-dir $last_loose &&
first_loose=$(head -n 1 loose-dirs) &&
rm -f loose-dirs &&
cd $first_loose &&
obj=$(ls *) &&
mv $obj ../an-object &&
ln -s ../an-object $obj &&
cd ../ &&
echo unknown_content >unknown_file
) &&
git -C T fsck &&
git -C T rev-list --all --objects >T.objects
'
test_expect_success SYMLINKS 'clone repo with symlinked or unknown files at objects/' '
# None of these options work when cloning locally, since T has
# symlinks in its `$GIT_DIR/objects` directory
for option in --local --no-hardlinks --dissociate
do
test_must_fail git clone $option T T$option 2>err || return 1 &&
test_grep "symlink.*exists" err || return 1
done &&
# But `--shared` clones should still work, even when specifying
# a local path *and* that repository has symlinks present in its
# `$GIT_DIR/objects` directory.
git clone --shared T T--shared &&
git -C T--shared fsck &&
git -C T--shared rev-list --all --objects >T--shared.objects &&
test_cmp T.objects T--shared.objects &&
(
cd T--shared/.git/objects &&
find . -type f | sort >../../../T--shared.objects-files.raw &&
find . -type l | sort >../../../T--shared.objects-symlinks.raw
) &&
for raw in $(ls T*.raw)
do
sed -e "s!/../!/Y/!; s![0-9a-f]\{38,\}!Z!" -e "/commit-graph/d" \
-e "/multi-pack-index/d" -e "/rev/d" <$raw >$raw.de-sha-1 &&
sort $raw.de-sha-1 >$raw.de-sha || return 1
done &&
echo ./info/alternates >expected-files &&
test_cmp expected-files T--shared.objects-files.raw &&
test_must_be_empty T--shared.objects-symlinks.raw
'
test_expect_success SYMLINKS 'clone repo with symlinked objects directory' '
test_when_finished "rm -fr sensitive malicious" &&
mkdir -p sensitive &&
echo "secret" >sensitive/file &&
git init malicious &&
rm -fr malicious/.git/objects &&
ln -s "$(pwd)/sensitive" ./malicious/.git/objects &&
test_must_fail git clone --local malicious clone 2>err &&
test_path_is_missing clone &&
grep "is a symlink, refusing to clone with --local" err
'
test_done
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