Add tests for what happens when we locally clone .git/objects directories where some of the loose objects or packs are symlinked, or when when there's unknown files there.
I'm bending over backwards here to avoid a SHA1 dependency. See [1] for an earlier and simpler version that hardcoded a SHA-1s. This behavior has been the same for a *long* time, but hasn't been tested for. There's a good post-hoc argument to be made for copying over unknown things, e.g. I'd like a git version that doesn't know about the commit-graph to copy it under "clone --local" so a newer git version can make use of it. But the behavior showed where with symlinks seems pretty random. E.g. if "pack" is a symlink we end up with two copies of the contents, and only transfer some symlinks as-is. In follow-up commits we'll look at changing some of this behavior, but for now let's just assert it as-is so we'll notice what we'll change later. 1. https://public-inbox.org/git/20190226002625.13022-5-ava...@gmail.com/ Signed-off-by: Ævar Arnfjörð Bjarmason <ava...@gmail.com> --- t/t5604-clone-reference.sh | 142 +++++++++++++++++++++++++++++++++++++ 1 file changed, 142 insertions(+) diff --git a/t/t5604-clone-reference.sh b/t/t5604-clone-reference.sh index 4320082b1b..cb0dc22d14 100755 --- a/t/t5604-clone-reference.sh +++ b/t/t5604-clone-reference.sh @@ -221,4 +221,146 @@ test_expect_success 'clone, dissociate from 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$option fsck || return 1 + done && + find S-* -name "*some*" | sort >actual && + cat >expected <<-EOF && + S--dissociate/.git/objects/.some-hidden-file + S--dissociate/.git/objects/some-dir + S--dissociate/.git/objects/some-dir/.some-dot-file + S--dissociate/.git/objects/some-dir/some-file + S--dissociate/.git/objects/some-file + S--local/.git/objects/.some-hidden-file + S--local/.git/objects/some-dir + S--local/.git/objects/some-dir/.some-dot-file + S--local/.git/objects/some-dir/some-file + S--local/.git/objects/some-file + S--no-hardlinks/.git/objects/.some-hidden-file + S--no-hardlinks/.git/objects/some-dir + S--no-hardlinks/.git/objects/some-dir/.some-dot-file + S--no-hardlinks/.git/objects/some-dir/some-file + S--no-hardlinks/.git/objects/some-file + EOF + test_cmp expected actual +' + +test_expect_success SYMLINKS 'setup repo with manually symlinked objects/*' ' + git init T && + ( + cd T && + test_commit A && + git gc && + ( + cd .git/objects && + mv pack packs && + ln -s packs pack + ) && + test_commit B && + ( + cd .git/objects && + find ?? -type d >loose-dirs && + last_loose=$(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) && + ( + cd $first_loose && + obj=$(ls *) && + mv $obj ../an-object && + ln -s ../an-object $obj + ) && + find . -type f | sort >../../../T.objects-files.raw && + find . -type l | sort >../../../T.objects-links.raw + ) + ) && + git -C T fsck && + git -C T rev-list --all --objects >T.objects +' + + +test_expect_success SYMLINKS 'clone repo with symlinked objects/*' ' + for option in --local --no-hardlinks --shared --dissociate + do + git clone $option T T$option || return 1 && + git -C T$option fsck || return 1 && + git -C T$option rev-list --all --objects >T$option.objects && + test_cmp T.objects T$option.objects && + ( + cd T$option/.git/objects && + find . -type f | sort >../../../T$option.objects-files.raw && + find . -type l | sort >../../../T$option.objects-links.raw + ) + done && + + for raw in $(ls T*.raw) + do + sed -e "s!/..\$!/X!; s!/../!/Y/!; s![0-9a-f]\{38,\}!Z!" <$raw >$raw.de-sha || return 1 + done && + + cat >expected-files <<-EOF && + ./Y/Z + ./a-loose-dir/Z + ./an-object + ./Y/Z + ./info/packs + ./loose-dirs + ./pack/pack-Z.idx + ./pack/pack-Z.pack + ./packs/pack-Z.idx + ./packs/pack-Z.pack + EOF + cat >expected-links <<-EOF && + ./Y/Z + EOF + for option in --local --dissociate + do + test_cmp expected-files T$option.objects-files.raw.de-sha || return 1 && + test_cmp expected-links T$option.objects-links.raw.de-sha || return 1 + done && + + cat >expected-files <<-EOF && + ./Y/Z + ./Y/Z + ./a-loose-dir/Z + ./an-object + ./Y/Z + ./info/packs + ./loose-dirs + ./pack/pack-Z.idx + ./pack/pack-Z.pack + ./packs/pack-Z.idx + ./packs/pack-Z.pack + EOF + test_cmp expected-files T--no-hardlinks.objects-files.raw.de-sha && + test_must_be_empty T--no-hardlinks.objects-links.raw.de-sha && + + cat >expected-files <<-EOF && + ./info/alternates + EOF + test_cmp expected-files T--shared.objects-files.raw && + test_must_be_empty T--shared.objects-links.raw +' + test_done -- 2.21.0.rc2.261.ga7da99ff1b
