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https://github.com/git/git
synced 2024-08-27 11:39:22 +00:00
![Jeff King](/assets/img/avatar_default.png)
The loose objects are created with mode 0444. That doesn't prevent them being overwritten by rename(), but some versions of "mv" will be extra careful and prompt the user, even without "-i". Reportedly macOS does this, at least in the Travis builds. The prompt reads from /dev/null, defaulting to "no", and the object isn't moved. Then to make matters even more interesting, it still returns "0" and the rest of the test proceeds, but with a broken setup. We can work around it by using "mv -f" to override the prompt. This should work as it's already used in t5504 for the same purpose. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
631 lines
18 KiB
Bash
Executable file
631 lines
18 KiB
Bash
Executable file
#!/bin/sh
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test_description='git fsck random collection of tests
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* (HEAD) B
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* (master) A
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'
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. ./test-lib.sh
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test_expect_success setup '
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git config gc.auto 0 &&
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git config i18n.commitencoding ISO-8859-1 &&
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test_commit A fileA one &&
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git config --unset i18n.commitencoding &&
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git checkout HEAD^0 &&
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test_commit B fileB two &&
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git tag -d A B &&
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git reflog expire --expire=now --all &&
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>empty
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'
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test_expect_success 'loose objects borrowed from alternate are not missing' '
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mkdir another &&
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(
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cd another &&
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git init &&
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echo ../../../.git/objects >.git/objects/info/alternates &&
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test_commit C fileC one &&
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git fsck --no-dangling >../actual 2>&1
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) &&
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test_cmp empty actual
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'
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test_expect_success 'HEAD is part of refs, valid objects appear valid' '
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git fsck >actual 2>&1 &&
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test_cmp empty actual
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'
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# Corruption tests follow. Make sure to remove all traces of the
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# specific corruption you test afterwards, lest a later test trip over
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# it.
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test_expect_success 'setup: helpers for corruption tests' '
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sha1_file() {
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echo "$*" | sed "s#..#.git/objects/&/#"
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} &&
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remove_object() {
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file=$(sha1_file "$*") &&
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test -e "$file" &&
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rm -f "$file"
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}
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'
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test_expect_success 'object with bad sha1' '
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sha=$(echo blob | git hash-object -w --stdin) &&
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old=$(echo $sha | sed "s+^..+&/+") &&
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new=$(dirname $old)/ffffffffffffffffffffffffffffffffffffff &&
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sha="$(dirname $new)$(basename $new)" &&
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mv .git/objects/$old .git/objects/$new &&
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test_when_finished "remove_object $sha" &&
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git update-index --add --cacheinfo 100644 $sha foo &&
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test_when_finished "git read-tree -u --reset HEAD" &&
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tree=$(git write-tree) &&
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test_when_finished "remove_object $tree" &&
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cmt=$(echo bogus | git commit-tree $tree) &&
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test_when_finished "remove_object $cmt" &&
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git update-ref refs/heads/bogus $cmt &&
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test_when_finished "git update-ref -d refs/heads/bogus" &&
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test_must_fail git fsck 2>out &&
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cat out &&
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grep "$sha.*corrupt" out
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'
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test_expect_success 'branch pointing to non-commit' '
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git rev-parse HEAD^{tree} >.git/refs/heads/invalid &&
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test_when_finished "git update-ref -d refs/heads/invalid" &&
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test_must_fail git fsck 2>out &&
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cat out &&
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grep "not a commit" out
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'
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test_expect_success 'HEAD link pointing at a funny object' '
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test_when_finished "mv .git/SAVED_HEAD .git/HEAD" &&
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mv .git/HEAD .git/SAVED_HEAD &&
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echo 0000000000000000000000000000000000000000 >.git/HEAD &&
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# avoid corrupt/broken HEAD from interfering with repo discovery
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test_must_fail env GIT_DIR=.git git fsck 2>out &&
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cat out &&
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grep "detached HEAD points" out
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'
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test_expect_success 'HEAD link pointing at a funny place' '
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test_when_finished "mv .git/SAVED_HEAD .git/HEAD" &&
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mv .git/HEAD .git/SAVED_HEAD &&
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echo "ref: refs/funny/place" >.git/HEAD &&
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# avoid corrupt/broken HEAD from interfering with repo discovery
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test_must_fail env GIT_DIR=.git git fsck 2>out &&
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cat out &&
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grep "HEAD points to something strange" out
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'
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test_expect_success 'email without @ is okay' '
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git cat-file commit HEAD >basis &&
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sed "s/@/AT/" basis >okay &&
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new=$(git hash-object -t commit -w --stdin <okay) &&
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test_when_finished "remove_object $new" &&
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git update-ref refs/heads/bogus "$new" &&
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test_when_finished "git update-ref -d refs/heads/bogus" &&
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git fsck 2>out &&
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cat out &&
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! grep "commit $new" out
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'
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test_expect_success 'email with embedded > is not okay' '
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git cat-file commit HEAD >basis &&
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sed "s/@[a-z]/&>/" basis >bad-email &&
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new=$(git hash-object -t commit -w --stdin <bad-email) &&
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test_when_finished "remove_object $new" &&
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git update-ref refs/heads/bogus "$new" &&
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test_when_finished "git update-ref -d refs/heads/bogus" &&
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test_must_fail git fsck 2>out &&
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cat out &&
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grep "error in commit $new" out
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'
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test_expect_success 'missing < email delimiter is reported nicely' '
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git cat-file commit HEAD >basis &&
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sed "s/<//" basis >bad-email-2 &&
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new=$(git hash-object -t commit -w --stdin <bad-email-2) &&
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test_when_finished "remove_object $new" &&
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git update-ref refs/heads/bogus "$new" &&
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test_when_finished "git update-ref -d refs/heads/bogus" &&
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test_must_fail git fsck 2>out &&
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cat out &&
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grep "error in commit $new.* - bad name" out
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'
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test_expect_success 'missing email is reported nicely' '
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git cat-file commit HEAD >basis &&
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sed "s/[a-z]* <[^>]*>//" basis >bad-email-3 &&
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new=$(git hash-object -t commit -w --stdin <bad-email-3) &&
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test_when_finished "remove_object $new" &&
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git update-ref refs/heads/bogus "$new" &&
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test_when_finished "git update-ref -d refs/heads/bogus" &&
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test_must_fail git fsck 2>out &&
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cat out &&
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grep "error in commit $new.* - missing email" out
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'
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test_expect_success '> in name is reported' '
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git cat-file commit HEAD >basis &&
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sed "s/ </> </" basis >bad-email-4 &&
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new=$(git hash-object -t commit -w --stdin <bad-email-4) &&
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test_when_finished "remove_object $new" &&
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git update-ref refs/heads/bogus "$new" &&
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test_when_finished "git update-ref -d refs/heads/bogus" &&
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test_must_fail git fsck 2>out &&
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cat out &&
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grep "error in commit $new" out
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'
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# date is 2^64 + 1
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test_expect_success 'integer overflow in timestamps is reported' '
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git cat-file commit HEAD >basis &&
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sed "s/^\\(author .*>\\) [0-9]*/\\1 18446744073709551617/" \
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<basis >bad-timestamp &&
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new=$(git hash-object -t commit -w --stdin <bad-timestamp) &&
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test_when_finished "remove_object $new" &&
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git update-ref refs/heads/bogus "$new" &&
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test_when_finished "git update-ref -d refs/heads/bogus" &&
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test_must_fail git fsck 2>out &&
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cat out &&
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grep "error in commit $new.*integer overflow" out
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'
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test_expect_success 'commit with NUL in header' '
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git cat-file commit HEAD >basis &&
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sed "s/author ./author Q/" <basis | q_to_nul >commit-NUL-header &&
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new=$(git hash-object -t commit -w --stdin <commit-NUL-header) &&
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test_when_finished "remove_object $new" &&
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git update-ref refs/heads/bogus "$new" &&
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test_when_finished "git update-ref -d refs/heads/bogus" &&
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test_must_fail git fsck 2>out &&
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cat out &&
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grep "error in commit $new.*unterminated header: NUL at offset" out
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'
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test_expect_success 'tree object with duplicate entries' '
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test_when_finished "for i in \$T; do remove_object \$i; done" &&
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T=$(
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GIT_INDEX_FILE=test-index &&
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export GIT_INDEX_FILE &&
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rm -f test-index &&
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>x &&
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git add x &&
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git rev-parse :x &&
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T=$(git write-tree) &&
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echo $T &&
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(
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git cat-file tree $T &&
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git cat-file tree $T
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) |
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git hash-object -w -t tree --stdin
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) &&
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test_must_fail git fsck 2>out &&
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grep "error in tree .*contains duplicate file entries" out
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'
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test_expect_success 'unparseable tree object' '
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test_when_finished "git update-ref -d refs/heads/wrong" &&
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test_when_finished "remove_object \$tree_sha1" &&
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test_when_finished "remove_object \$commit_sha1" &&
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tree_sha1=$(printf "100644 \0twenty-bytes-of-junk" | git hash-object -t tree --stdin -w --literally) &&
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commit_sha1=$(git commit-tree $tree_sha1) &&
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git update-ref refs/heads/wrong $commit_sha1 &&
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test_must_fail git fsck 2>out &&
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test_i18ngrep "error: empty filename in tree entry" out &&
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test_i18ngrep "$tree_sha1" out &&
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test_i18ngrep ! "fatal: empty filename in tree entry" out
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'
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test_expect_success 'tag pointing to nonexistent' '
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cat >invalid-tag <<-\EOF &&
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object ffffffffffffffffffffffffffffffffffffffff
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type commit
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tag invalid
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tagger T A Gger <tagger@example.com> 1234567890 -0000
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This is an invalid tag.
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EOF
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tag=$(git hash-object -t tag -w --stdin <invalid-tag) &&
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test_when_finished "remove_object $tag" &&
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echo $tag >.git/refs/tags/invalid &&
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test_when_finished "git update-ref -d refs/tags/invalid" &&
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test_must_fail git fsck --tags >out &&
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cat out &&
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grep "broken link" out
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'
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test_expect_success 'tag pointing to something else than its type' '
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sha=$(echo blob | git hash-object -w --stdin) &&
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test_when_finished "remove_object $sha" &&
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cat >wrong-tag <<-EOF &&
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object $sha
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type commit
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tag wrong
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tagger T A Gger <tagger@example.com> 1234567890 -0000
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This is an invalid tag.
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EOF
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tag=$(git hash-object -t tag -w --stdin <wrong-tag) &&
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test_when_finished "remove_object $tag" &&
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echo $tag >.git/refs/tags/wrong &&
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test_when_finished "git update-ref -d refs/tags/wrong" &&
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test_must_fail git fsck --tags
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'
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test_expect_success 'tag with incorrect tag name & missing tagger' '
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sha=$(git rev-parse HEAD) &&
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cat >wrong-tag <<-EOF &&
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object $sha
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type commit
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tag wrong name format
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This is an invalid tag.
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EOF
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tag=$(git hash-object -t tag -w --stdin <wrong-tag) &&
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test_when_finished "remove_object $tag" &&
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echo $tag >.git/refs/tags/wrong &&
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test_when_finished "git update-ref -d refs/tags/wrong" &&
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git fsck --tags 2>out &&
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cat >expect <<-EOF &&
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warning in tag $tag: badTagName: invalid '\''tag'\'' name: wrong name format
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warning in tag $tag: missingTaggerEntry: invalid format - expected '\''tagger'\'' line
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EOF
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test_cmp expect out
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'
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test_expect_success 'tag with bad tagger' '
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sha=$(git rev-parse HEAD) &&
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cat >wrong-tag <<-EOF &&
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object $sha
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type commit
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tag not-quite-wrong
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tagger Bad Tagger Name
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This is an invalid tag.
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EOF
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tag=$(git hash-object --literally -t tag -w --stdin <wrong-tag) &&
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test_when_finished "remove_object $tag" &&
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echo $tag >.git/refs/tags/wrong &&
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test_when_finished "git update-ref -d refs/tags/wrong" &&
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test_must_fail git fsck --tags 2>out &&
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grep "error in tag .*: invalid author/committer" out
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'
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test_expect_success 'tag with NUL in header' '
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sha=$(git rev-parse HEAD) &&
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q_to_nul >tag-NUL-header <<-EOF &&
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object $sha
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type commit
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tag contains-Q-in-header
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tagger T A Gger <tagger@example.com> 1234567890 -0000
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This is an invalid tag.
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EOF
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tag=$(git hash-object --literally -t tag -w --stdin <tag-NUL-header) &&
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test_when_finished "remove_object $tag" &&
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echo $tag >.git/refs/tags/wrong &&
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test_when_finished "git update-ref -d refs/tags/wrong" &&
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test_must_fail git fsck --tags 2>out &&
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cat out &&
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grep "error in tag $tag.*unterminated header: NUL at offset" out
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'
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test_expect_success 'cleaned up' '
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git fsck >actual 2>&1 &&
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test_cmp empty actual
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'
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test_expect_success 'rev-list --verify-objects' '
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git rev-list --verify-objects --all >/dev/null 2>out &&
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test_cmp empty out
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'
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test_expect_success 'rev-list --verify-objects with bad sha1' '
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sha=$(echo blob | git hash-object -w --stdin) &&
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old=$(echo $sha | sed "s+^..+&/+") &&
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new=$(dirname $old)/ffffffffffffffffffffffffffffffffffffff &&
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sha="$(dirname $new)$(basename $new)" &&
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mv .git/objects/$old .git/objects/$new &&
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test_when_finished "remove_object $sha" &&
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git update-index --add --cacheinfo 100644 $sha foo &&
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test_when_finished "git read-tree -u --reset HEAD" &&
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tree=$(git write-tree) &&
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test_when_finished "remove_object $tree" &&
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cmt=$(echo bogus | git commit-tree $tree) &&
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test_when_finished "remove_object $cmt" &&
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git update-ref refs/heads/bogus $cmt &&
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test_when_finished "git update-ref -d refs/heads/bogus" &&
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test_might_fail git rev-list --verify-objects refs/heads/bogus >/dev/null 2>out &&
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cat out &&
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grep -q "error: sha1 mismatch 63ffffffffffffffffffffffffffffffffffffff" out
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'
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test_expect_success 'force fsck to ignore double author' '
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git cat-file commit HEAD >basis &&
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sed "s/^author .*/&,&/" <basis | tr , \\n >multiple-authors &&
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new=$(git hash-object -t commit -w --stdin <multiple-authors) &&
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test_when_finished "remove_object $new" &&
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git update-ref refs/heads/bogus "$new" &&
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test_when_finished "git update-ref -d refs/heads/bogus" &&
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test_must_fail git fsck &&
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git -c fsck.multipleAuthors=ignore fsck
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'
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_bz='\0'
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_bz5="$_bz$_bz$_bz$_bz$_bz"
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_bz20="$_bz5$_bz5$_bz5$_bz5"
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test_expect_success 'fsck notices blob entry pointing to null sha1' '
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(git init null-blob &&
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cd null-blob &&
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sha=$(printf "100644 file$_bz$_bz20" |
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git hash-object -w --stdin -t tree) &&
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git fsck 2>out &&
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cat out &&
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grep "warning.*null sha1" out
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)
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'
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test_expect_success 'fsck notices submodule entry pointing to null sha1' '
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(git init null-commit &&
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cd null-commit &&
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sha=$(printf "160000 submodule$_bz$_bz20" |
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git hash-object -w --stdin -t tree) &&
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git fsck 2>out &&
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cat out &&
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grep "warning.*null sha1" out
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)
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'
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while read name path pretty; do
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while read mode type; do
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: ${pretty:=$path}
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test_expect_success "fsck notices $pretty as $type" '
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(
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git init $name-$type &&
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cd $name-$type &&
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echo content >file &&
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git add file &&
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git commit -m base &&
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blob=$(git rev-parse :file) &&
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tree=$(git rev-parse HEAD^{tree}) &&
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value=$(eval "echo \$$type") &&
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printf "$mode $type %s\t%s" "$value" "$path" >bad &&
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bad_tree=$(git mktree <bad) &&
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git fsck 2>out &&
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cat out &&
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grep "warning.*tree $bad_tree" out
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)'
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done <<-\EOF
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100644 blob
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040000 tree
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EOF
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done <<-EOF
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dot .
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dotdot ..
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dotgit .git
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dotgit-case .GIT
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dotgit-unicode .gI${u200c}T .gI{u200c}T
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dotgit-case2 .Git
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git-tilde1 git~1
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dotgitdot .git.
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dot-backslash-case .\\\\.GIT\\\\foobar
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dotgit-case-backslash .git\\\\foobar
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EOF
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test_expect_success 'fsck allows .Ňit' '
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(
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git init not-dotgit &&
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cd not-dotgit &&
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echo content >file &&
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git add file &&
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git commit -m base &&
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blob=$(git rev-parse :file) &&
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printf "100644 blob $blob\t.\\305\\207it" >tree &&
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tree=$(git mktree <tree) &&
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git fsck 2>err &&
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test_line_count = 0 err
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)
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'
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test_expect_success 'NUL in commit' '
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rm -fr nul-in-commit &&
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git init nul-in-commit &&
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(
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cd nul-in-commit &&
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git commit --allow-empty -m "initial commitQNUL after message" &&
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git cat-file commit HEAD >original &&
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q_to_nul <original >munged &&
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git hash-object -w -t commit --stdin <munged >name &&
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git branch bad $(cat name) &&
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test_must_fail git -c fsck.nulInCommit=error fsck 2>warn.1 &&
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grep nulInCommit warn.1 &&
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git fsck 2>warn.2 &&
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grep nulInCommit warn.2
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)
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'
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# create a static test repo which is broken by omitting
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# one particular object ($1, which is looked up via rev-parse
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# in the new repository).
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|
create_repo_missing () {
|
|
rm -rf missing &&
|
|
git init missing &&
|
|
(
|
|
cd missing &&
|
|
git commit -m one --allow-empty &&
|
|
mkdir subdir &&
|
|
echo content >subdir/file &&
|
|
git add subdir/file &&
|
|
git commit -m two &&
|
|
unrelated=$(echo unrelated | git hash-object --stdin -w) &&
|
|
git tag -m foo tag $unrelated &&
|
|
sha1=$(git rev-parse --verify "$1") &&
|
|
path=$(echo $sha1 | sed 's|..|&/|') &&
|
|
rm .git/objects/$path
|
|
)
|
|
}
|
|
|
|
test_expect_success 'fsck notices missing blob' '
|
|
create_repo_missing HEAD:subdir/file &&
|
|
test_must_fail git -C missing fsck
|
|
'
|
|
|
|
test_expect_success 'fsck notices missing subtree' '
|
|
create_repo_missing HEAD:subdir &&
|
|
test_must_fail git -C missing fsck
|
|
'
|
|
|
|
test_expect_success 'fsck notices missing root tree' '
|
|
create_repo_missing HEAD^{tree} &&
|
|
test_must_fail git -C missing fsck
|
|
'
|
|
|
|
test_expect_success 'fsck notices missing parent' '
|
|
create_repo_missing HEAD^ &&
|
|
test_must_fail git -C missing fsck
|
|
'
|
|
|
|
test_expect_success 'fsck notices missing tagged object' '
|
|
create_repo_missing tag^{blob} &&
|
|
test_must_fail git -C missing fsck
|
|
'
|
|
|
|
test_expect_success 'fsck notices ref pointing to missing commit' '
|
|
create_repo_missing HEAD &&
|
|
test_must_fail git -C missing fsck
|
|
'
|
|
|
|
test_expect_success 'fsck notices ref pointing to missing tag' '
|
|
create_repo_missing tag &&
|
|
test_must_fail git -C missing fsck
|
|
'
|
|
|
|
test_expect_success 'fsck --connectivity-only' '
|
|
rm -rf connectivity-only &&
|
|
git init connectivity-only &&
|
|
(
|
|
cd connectivity-only &&
|
|
touch empty &&
|
|
git add empty &&
|
|
test_commit empty &&
|
|
|
|
# Drop the index now; we want to be sure that we
|
|
# recursively notice the broken objects
|
|
# because they are reachable from refs, not because
|
|
# they are in the index.
|
|
rm -f .git/index &&
|
|
|
|
# corrupt the blob, but in a way that we can still identify
|
|
# its type. That lets us see that --connectivity-only is
|
|
# not actually looking at the contents, but leaves it
|
|
# free to examine the type if it chooses.
|
|
empty=.git/objects/e6/9de29bb2d1d6434b8b29ae775ad8c2e48c5391 &&
|
|
blob=$(echo unrelated | git hash-object -w --stdin) &&
|
|
mv -f $(sha1_file $blob) $empty &&
|
|
|
|
test_must_fail git fsck --strict &&
|
|
git fsck --strict --connectivity-only &&
|
|
tree=$(git rev-parse HEAD:) &&
|
|
suffix=${tree#??} &&
|
|
tree=.git/objects/${tree%$suffix}/$suffix &&
|
|
rm -f $tree &&
|
|
echo invalid >$tree &&
|
|
test_must_fail git fsck --strict --connectivity-only
|
|
)
|
|
'
|
|
|
|
test_expect_success 'fsck --connectivity-only with explicit head' '
|
|
rm -rf connectivity-only &&
|
|
git init connectivity-only &&
|
|
(
|
|
cd connectivity-only &&
|
|
test_commit foo &&
|
|
rm -f .git/index &&
|
|
tree=$(git rev-parse HEAD^{tree}) &&
|
|
remove_object $(git rev-parse HEAD:foo.t) &&
|
|
test_must_fail git fsck --connectivity-only $tree
|
|
)
|
|
'
|
|
|
|
remove_loose_object () {
|
|
sha1="$(git rev-parse "$1")" &&
|
|
remainder=${sha1#??} &&
|
|
firsttwo=${sha1%$remainder} &&
|
|
rm .git/objects/$firsttwo/$remainder
|
|
}
|
|
|
|
test_expect_success 'fsck --name-objects' '
|
|
rm -rf name-objects &&
|
|
git init name-objects &&
|
|
(
|
|
cd name-objects &&
|
|
test_commit julius caesar.t &&
|
|
test_commit augustus &&
|
|
test_commit caesar &&
|
|
remove_loose_object $(git rev-parse julius:caesar.t) &&
|
|
test_must_fail git fsck --name-objects >out &&
|
|
tree=$(git rev-parse --verify julius:) &&
|
|
grep "$tree (\(refs/heads/master\|HEAD\)@{[0-9]*}:" out
|
|
)
|
|
'
|
|
|
|
# for each of type, we have one version which is referenced by another object
|
|
# (and so while unreachable, not dangling), and another variant which really is
|
|
# dangling.
|
|
test_expect_success 'fsck notices dangling objects' '
|
|
git init dangling &&
|
|
(
|
|
cd dangling &&
|
|
blob=$(echo not-dangling | git hash-object -w --stdin) &&
|
|
dblob=$(echo dangling | git hash-object -w --stdin) &&
|
|
tree=$(printf "100644 blob %s\t%s\n" $blob one | git mktree) &&
|
|
dtree=$(printf "100644 blob %s\t%s\n" $blob two | git mktree) &&
|
|
commit=$(git commit-tree $tree) &&
|
|
dcommit=$(git commit-tree -p $commit $tree) &&
|
|
|
|
cat >expect <<-EOF &&
|
|
dangling blob $dblob
|
|
dangling commit $dcommit
|
|
dangling tree $dtree
|
|
EOF
|
|
|
|
git fsck >actual &&
|
|
# the output order is non-deterministic, as it comes from a hash
|
|
sort <actual >actual.sorted &&
|
|
test_cmp expect actual.sorted
|
|
)
|
|
'
|
|
|
|
test_expect_success 'fsck $name notices bogus $name' '
|
|
test_must_fail git fsck bogus &&
|
|
test_must_fail git fsck $_z40
|
|
'
|
|
|
|
test_expect_success 'bogus head does not fallback to all heads' '
|
|
# set up a case that will cause a reachability complaint
|
|
echo to-be-deleted >foo &&
|
|
git add foo &&
|
|
blob=$(git rev-parse :foo) &&
|
|
test_when_finished "git rm --cached foo" &&
|
|
remove_object $blob &&
|
|
test_must_fail git fsck $_z40 >out 2>&1 &&
|
|
! grep $blob out
|
|
'
|
|
|
|
test_done
|