diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:47:53 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:47:53 +0000 |
commit | c8bae7493d2f2910b57f13ded012e86bdcfb0532 (patch) | |
tree | 24e09d9f84dec336720cf393e156089ca2835791 /t/t5312-prune-corruption.sh | |
parent | Initial commit. (diff) | |
download | git-17a789943131483bc454986d1be6da6caaabce8c.tar.xz git-17a789943131483bc454986d1be6da6caaabce8c.zip |
Adding upstream version 1:2.39.2.upstream/1%2.39.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 't/t5312-prune-corruption.sh')
-rwxr-xr-x | t/t5312-prune-corruption.sh | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/t/t5312-prune-corruption.sh b/t/t5312-prune-corruption.sh new file mode 100755 index 0000000..9d8e249 --- /dev/null +++ b/t/t5312-prune-corruption.sh @@ -0,0 +1,139 @@ +#!/bin/sh + +test_description=' +Test pruning of repositories with minor corruptions. The goal +here is that we should always be erring on the side of safety. So +if we see, for example, a ref with a bogus name, it is OK either to +bail out or to proceed using it as a reachable tip, but it is _not_ +OK to proceed as if it did not exist. Otherwise we might silently +delete objects that cannot be recovered. + +Note that we do assert command failure in these cases, because that is +what currently happens. If that changes, these tests should be revisited. +' +GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main +export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME + +. ./test-lib.sh + +test_expect_success 'disable reflogs' ' + git config core.logallrefupdates false && + git reflog expire --expire=all --all +' + +create_bogus_ref () { + test-tool ref-store main update-ref msg "refs/heads/bogus..name" $bogus $ZERO_OID REF_SKIP_REFNAME_VERIFICATION && + test_when_finished "test-tool ref-store main delete-refs REF_NO_DEREF msg refs/heads/bogus..name" +} + +test_expect_success 'create history reachable only from a bogus-named ref' ' + test_tick && git commit --allow-empty -m main && + base=$(git rev-parse HEAD) && + test_tick && git commit --allow-empty -m bogus && + bogus=$(git rev-parse HEAD) && + git cat-file commit $bogus >saved && + git reset --hard HEAD^ +' + +test_expect_success 'pruning does not drop bogus object' ' + test_when_finished "git hash-object -w -t commit saved" && + create_bogus_ref && + test_must_fail git prune --expire=now && + git cat-file -e $bogus +' + +test_expect_success 'put bogus object into pack' ' + git tag reachable $bogus && + git repack -ad && + git tag -d reachable && + git cat-file -e $bogus +' + +test_expect_success 'non-destructive repack bails on bogus ref' ' + create_bogus_ref && + test_must_fail git repack -adk +' + +test_expect_success 'GIT_REF_PARANOIA=0 overrides safety' ' + create_bogus_ref && + GIT_REF_PARANOIA=0 git repack -adk +' + + +test_expect_success 'destructive repack keeps packed object' ' + create_bogus_ref && + test_must_fail git repack -Ad --unpack-unreachable=now && + git cat-file -e $bogus && + test_must_fail git repack -ad && + git cat-file -e $bogus +' + +test_expect_success 'destructive repack not confused by dangling symref' ' + test_when_finished "git symbolic-ref -d refs/heads/dangling" && + git symbolic-ref refs/heads/dangling refs/heads/does-not-exist && + git repack -ad && + test_must_fail git cat-file -e $bogus +' + +# We create two new objects here, "one" and "two". Our +# main branch points to "two", which is deleted, +# corrupting the repository. But we'd like to make sure +# that the otherwise unreachable "one" is not pruned +# (since it is the user's best bet for recovering +# from the corruption). +# +# Note that we also point HEAD somewhere besides "two", +# as we want to make sure we test the case where we +# pick up the reference to "two" by iterating the refs, +# not by resolving HEAD. +test_expect_success 'create history with missing tip commit' ' + test_tick && git commit --allow-empty -m one && + recoverable=$(git rev-parse HEAD) && + git cat-file commit $recoverable >saved && + test_tick && git commit --allow-empty -m two && + missing=$(git rev-parse HEAD) && + git checkout --detach $base && + rm .git/objects/$(echo $missing | sed "s,..,&/,") && + test_must_fail git cat-file -e $missing +' + +test_expect_success 'pruning with a corrupted tip does not drop history' ' + test_when_finished "git hash-object -w -t commit saved" && + test_must_fail git prune --expire=now && + git cat-file -e $recoverable +' + +test_expect_success 'pack-refs does not silently delete broken loose ref' ' + git pack-refs --all --prune && + echo $missing >expect && + git rev-parse refs/heads/main >actual && + test_cmp expect actual +' + +# we do not want to count on running pack-refs to +# actually pack it, as it is perfectly reasonable to +# skip processing a broken ref +test_expect_success REFFILES 'create packed-refs file with broken ref' ' + rm -f .git/refs/heads/main && + cat >.git/packed-refs <<-EOF && + $missing refs/heads/main + $recoverable refs/heads/other + EOF + echo $missing >expect && + git rev-parse refs/heads/main >actual && + test_cmp expect actual +' + +test_expect_success REFFILES 'pack-refs does not silently delete broken packed ref' ' + git pack-refs --all --prune && + git rev-parse refs/heads/main >actual && + test_cmp expect actual +' + +test_expect_success REFFILES 'pack-refs does not drop broken refs during deletion' ' + git update-ref -d refs/heads/other && + git rev-parse refs/heads/main >actual && + test_cmp expect actual +' + +test_done |