3 test_description='git fsck random collection of tests
11 test_expect_success setup '
12 git config gc.auto 0 &&
13 git config i18n.commitencoding ISO-8859-1 &&
14 test_commit A fileA one &&
15 git config --unset i18n.commitencoding &&
16 git checkout HEAD^0 &&
17 test_commit B fileB two &&
19 git reflog expire --expire=now --all
22 test_expect_success 'loose objects borrowed from alternate are not missing' '
27 echo ../../../.git/objects >.git/objects/info/alternates &&
28 test_commit C fileC one &&
29 git fsck --no-dangling >../actual 2>&1
31 test_must_be_empty actual
34 test_expect_success 'HEAD is part of refs, valid objects appear valid' '
35 git fsck >actual 2>&1 &&
36 test_must_be_empty actual
39 # Corruption tests follow. Make sure to remove all traces of the
40 # specific corruption you test afterwards, lest a later test trip over
43 test_expect_success 'setup: helpers for corruption tests' '
46 firsttwo=${1%$remainder} &&
47 echo ".git/objects/$firsttwo/$remainder"
51 rm "$(sha1_file "$1")"
55 test_expect_success 'object with bad sha1' '
56 sha=$(echo blob | git hash-object -w --stdin) &&
57 old=$(echo $sha | sed "s+^..+&/+") &&
58 new=$(dirname $old)/ffffffffffffffffffffffffffffffffffffff &&
59 sha="$(dirname $new)$(basename $new)" &&
60 mv .git/objects/$old .git/objects/$new &&
61 test_when_finished "remove_object $sha" &&
62 git update-index --add --cacheinfo 100644 $sha foo &&
63 test_when_finished "git read-tree -u --reset HEAD" &&
64 tree=$(git write-tree) &&
65 test_when_finished "remove_object $tree" &&
66 cmt=$(echo bogus | git commit-tree $tree) &&
67 test_when_finished "remove_object $cmt" &&
68 git update-ref refs/heads/bogus $cmt &&
69 test_when_finished "git update-ref -d refs/heads/bogus" &&
71 test_must_fail git fsck 2>out &&
73 test_i18ngrep "$sha.*corrupt" out
76 test_expect_success 'branch pointing to non-commit' '
77 git rev-parse HEAD^{tree} >.git/refs/heads/invalid &&
78 test_when_finished "git update-ref -d refs/heads/invalid" &&
79 test_must_fail git fsck 2>out &&
81 test_i18ngrep "not a commit" out
84 test_expect_success 'HEAD link pointing at a funny object' '
85 test_when_finished "mv .git/SAVED_HEAD .git/HEAD" &&
86 mv .git/HEAD .git/SAVED_HEAD &&
87 echo 0000000000000000000000000000000000000000 >.git/HEAD &&
88 # avoid corrupt/broken HEAD from interfering with repo discovery
89 test_must_fail env GIT_DIR=.git git fsck 2>out &&
91 test_i18ngrep "detached HEAD points" out
94 test_expect_success 'HEAD link pointing at a funny place' '
95 test_when_finished "mv .git/SAVED_HEAD .git/HEAD" &&
96 mv .git/HEAD .git/SAVED_HEAD &&
97 echo "ref: refs/funny/place" >.git/HEAD &&
98 # avoid corrupt/broken HEAD from interfering with repo discovery
99 test_must_fail env GIT_DIR=.git git fsck 2>out &&
101 test_i18ngrep "HEAD points to something strange" out
104 test_expect_success 'HEAD link pointing at a funny object (from different wt)' '
105 test_when_finished "mv .git/SAVED_HEAD .git/HEAD" &&
106 test_when_finished "rm -rf .git/worktrees wt" &&
107 git worktree add wt &&
108 mv .git/HEAD .git/SAVED_HEAD &&
109 echo $ZERO_OID >.git/HEAD &&
110 # avoid corrupt/broken HEAD from interfering with repo discovery
111 test_must_fail git -C wt fsck 2>out &&
112 test_i18ngrep "main-worktree/HEAD: detached HEAD points" out
115 test_expect_success 'other worktree HEAD link pointing at a funny object' '
116 test_when_finished "rm -rf .git/worktrees other" &&
117 git worktree add other &&
118 echo $ZERO_OID >.git/worktrees/other/HEAD &&
119 test_must_fail git fsck 2>out &&
120 test_i18ngrep "worktrees/other/HEAD: detached HEAD points" out
123 test_expect_success 'other worktree HEAD link pointing at missing object' '
124 test_when_finished "rm -rf .git/worktrees other" &&
125 git worktree add other &&
126 echo "Contents missing from repo" | git hash-object --stdin >.git/worktrees/other/HEAD &&
127 test_must_fail git fsck 2>out &&
128 test_i18ngrep "worktrees/other/HEAD: invalid sha1 pointer" out
131 test_expect_success 'other worktree HEAD link pointing at a funny place' '
132 test_when_finished "rm -rf .git/worktrees other" &&
133 git worktree add other &&
134 echo "ref: refs/funny/place" >.git/worktrees/other/HEAD &&
135 test_must_fail git fsck 2>out &&
136 test_i18ngrep "worktrees/other/HEAD points to something strange" out
139 test_expect_success 'email without @ is okay' '
140 git cat-file commit HEAD >basis &&
141 sed "s/@/AT/" basis >okay &&
142 new=$(git hash-object -t commit -w --stdin <okay) &&
143 test_when_finished "remove_object $new" &&
144 git update-ref refs/heads/bogus "$new" &&
145 test_when_finished "git update-ref -d refs/heads/bogus" &&
148 ! grep "commit $new" out
151 test_expect_success 'email with embedded > is not okay' '
152 git cat-file commit HEAD >basis &&
153 sed "s/@[a-z]/&>/" basis >bad-email &&
154 new=$(git hash-object -t commit -w --stdin <bad-email) &&
155 test_when_finished "remove_object $new" &&
156 git update-ref refs/heads/bogus "$new" &&
157 test_when_finished "git update-ref -d refs/heads/bogus" &&
158 test_must_fail git fsck 2>out &&
160 test_i18ngrep "error in commit $new" out
163 test_expect_success 'missing < email delimiter is reported nicely' '
164 git cat-file commit HEAD >basis &&
165 sed "s/<//" basis >bad-email-2 &&
166 new=$(git hash-object -t commit -w --stdin <bad-email-2) &&
167 test_when_finished "remove_object $new" &&
168 git update-ref refs/heads/bogus "$new" &&
169 test_when_finished "git update-ref -d refs/heads/bogus" &&
170 test_must_fail git fsck 2>out &&
172 test_i18ngrep "error in commit $new.* - bad name" out
175 test_expect_success 'missing email is reported nicely' '
176 git cat-file commit HEAD >basis &&
177 sed "s/[a-z]* <[^>]*>//" basis >bad-email-3 &&
178 new=$(git hash-object -t commit -w --stdin <bad-email-3) &&
179 test_when_finished "remove_object $new" &&
180 git update-ref refs/heads/bogus "$new" &&
181 test_when_finished "git update-ref -d refs/heads/bogus" &&
182 test_must_fail git fsck 2>out &&
184 test_i18ngrep "error in commit $new.* - missing email" out
187 test_expect_success '> in name is reported' '
188 git cat-file commit HEAD >basis &&
189 sed "s/ </> </" basis >bad-email-4 &&
190 new=$(git hash-object -t commit -w --stdin <bad-email-4) &&
191 test_when_finished "remove_object $new" &&
192 git update-ref refs/heads/bogus "$new" &&
193 test_when_finished "git update-ref -d refs/heads/bogus" &&
194 test_must_fail git fsck 2>out &&
196 test_i18ngrep "error in commit $new" out
200 test_expect_success 'integer overflow in timestamps is reported' '
201 git cat-file commit HEAD >basis &&
202 sed "s/^\\(author .*>\\) [0-9]*/\\1 18446744073709551617/" \
203 <basis >bad-timestamp &&
204 new=$(git hash-object -t commit -w --stdin <bad-timestamp) &&
205 test_when_finished "remove_object $new" &&
206 git update-ref refs/heads/bogus "$new" &&
207 test_when_finished "git update-ref -d refs/heads/bogus" &&
208 test_must_fail git fsck 2>out &&
210 test_i18ngrep "error in commit $new.*integer overflow" out
213 test_expect_success 'commit with NUL in header' '
214 git cat-file commit HEAD >basis &&
215 sed "s/author ./author Q/" <basis | q_to_nul >commit-NUL-header &&
216 new=$(git hash-object -t commit -w --stdin <commit-NUL-header) &&
217 test_when_finished "remove_object $new" &&
218 git update-ref refs/heads/bogus "$new" &&
219 test_when_finished "git update-ref -d refs/heads/bogus" &&
220 test_must_fail git fsck 2>out &&
222 test_i18ngrep "error in commit $new.*unterminated header: NUL at offset" out
225 test_expect_success 'tree object with duplicate entries' '
226 test_when_finished "for i in \$T; do remove_object \$i; done" &&
228 GIT_INDEX_FILE=test-index &&
229 export GIT_INDEX_FILE &&
234 T=$(git write-tree) &&
237 git cat-file tree $T &&
240 git hash-object -w -t tree --stdin
242 test_must_fail git fsck 2>out &&
243 test_i18ngrep "error in tree .*contains duplicate file entries" out
246 test_expect_success 'unparseable tree object' '
247 test_when_finished "git update-ref -d refs/heads/wrong" &&
248 test_when_finished "remove_object \$tree_sha1" &&
249 test_when_finished "remove_object \$commit_sha1" &&
250 tree_sha1=$(printf "100644 \0twenty-bytes-of-junk" | git hash-object -t tree --stdin -w --literally) &&
251 commit_sha1=$(git commit-tree $tree_sha1) &&
252 git update-ref refs/heads/wrong $commit_sha1 &&
253 test_must_fail git fsck 2>out &&
254 test_i18ngrep "error: empty filename in tree entry" out &&
255 test_i18ngrep "$tree_sha1" out &&
256 test_i18ngrep ! "fatal: empty filename in tree entry" out
259 test_expect_success 'tree entry with type mismatch' '
260 test_when_finished "remove_object \$blob" &&
261 test_when_finished "remove_object \$tree" &&
262 test_when_finished "remove_object \$commit" &&
263 test_when_finished "git update-ref -d refs/heads/type_mismatch" &&
264 blob=$(echo blob | git hash-object -w --stdin) &&
265 blob_bin=$(echo $blob | hex2oct) &&
267 printf "40000 dir\0${blob_bin}100644 file\0${blob_bin}" |
268 git hash-object -t tree --stdin -w --literally
270 commit=$(git commit-tree $tree) &&
271 git update-ref refs/heads/type_mismatch $commit &&
272 test_must_fail git fsck >out 2>&1 &&
273 test_i18ngrep "is a blob, not a tree" out &&
274 test_i18ngrep ! "dangling blob" out
277 test_expect_success 'tag pointing to nonexistent' '
278 cat >invalid-tag <<-\EOF &&
279 object ffffffffffffffffffffffffffffffffffffffff
282 tagger T A Gger <tagger@example.com> 1234567890 -0000
284 This is an invalid tag.
287 tag=$(git hash-object -t tag -w --stdin <invalid-tag) &&
288 test_when_finished "remove_object $tag" &&
289 echo $tag >.git/refs/tags/invalid &&
290 test_when_finished "git update-ref -d refs/tags/invalid" &&
291 test_must_fail git fsck --tags >out &&
293 test_i18ngrep "broken link" out
296 test_expect_success 'tag pointing to something else than its type' '
297 sha=$(echo blob | git hash-object -w --stdin) &&
298 test_when_finished "remove_object $sha" &&
299 cat >wrong-tag <<-EOF &&
303 tagger T A Gger <tagger@example.com> 1234567890 -0000
305 This is an invalid tag.
308 tag=$(git hash-object -t tag -w --stdin <wrong-tag) &&
309 test_when_finished "remove_object $tag" &&
310 echo $tag >.git/refs/tags/wrong &&
311 test_when_finished "git update-ref -d refs/tags/wrong" &&
312 test_must_fail git fsck --tags
315 test_expect_success 'tag with incorrect tag name & missing tagger' '
316 sha=$(git rev-parse HEAD) &&
317 cat >wrong-tag <<-EOF &&
320 tag wrong name format
322 This is an invalid tag.
325 tag=$(git hash-object -t tag -w --stdin <wrong-tag) &&
326 test_when_finished "remove_object $tag" &&
327 echo $tag >.git/refs/tags/wrong &&
328 test_when_finished "git update-ref -d refs/tags/wrong" &&
329 git fsck --tags 2>out &&
331 cat >expect <<-EOF &&
332 warning in tag $tag: badTagName: invalid '\''tag'\'' name: wrong name format
333 warning in tag $tag: missingTaggerEntry: invalid format - expected '\''tagger'\'' line
335 test_i18ncmp expect out
338 test_expect_success 'tag with bad tagger' '
339 sha=$(git rev-parse HEAD) &&
340 cat >wrong-tag <<-EOF &&
344 tagger Bad Tagger Name
346 This is an invalid tag.
349 tag=$(git hash-object --literally -t tag -w --stdin <wrong-tag) &&
350 test_when_finished "remove_object $tag" &&
351 echo $tag >.git/refs/tags/wrong &&
352 test_when_finished "git update-ref -d refs/tags/wrong" &&
353 test_must_fail git fsck --tags 2>out &&
354 test_i18ngrep "error in tag .*: invalid author/committer" out
357 test_expect_success 'tag with NUL in header' '
358 sha=$(git rev-parse HEAD) &&
359 q_to_nul >tag-NUL-header <<-EOF &&
362 tag contains-Q-in-header
363 tagger T A Gger <tagger@example.com> 1234567890 -0000
365 This is an invalid tag.
368 tag=$(git hash-object --literally -t tag -w --stdin <tag-NUL-header) &&
369 test_when_finished "remove_object $tag" &&
370 echo $tag >.git/refs/tags/wrong &&
371 test_when_finished "git update-ref -d refs/tags/wrong" &&
372 test_must_fail git fsck --tags 2>out &&
374 test_i18ngrep "error in tag $tag.*unterminated header: NUL at offset" out
377 test_expect_success 'cleaned up' '
378 git fsck >actual 2>&1 &&
379 test_must_be_empty actual
382 test_expect_success 'rev-list --verify-objects' '
383 git rev-list --verify-objects --all >/dev/null 2>out &&
384 test_must_be_empty out
387 test_expect_success 'rev-list --verify-objects with bad sha1' '
388 sha=$(echo blob | git hash-object -w --stdin) &&
389 old=$(echo $sha | sed "s+^..+&/+") &&
390 new=$(dirname $old)/ffffffffffffffffffffffffffffffffffffff &&
391 sha="$(dirname $new)$(basename $new)" &&
392 mv .git/objects/$old .git/objects/$new &&
393 test_when_finished "remove_object $sha" &&
394 git update-index --add --cacheinfo 100644 $sha foo &&
395 test_when_finished "git read-tree -u --reset HEAD" &&
396 tree=$(git write-tree) &&
397 test_when_finished "remove_object $tree" &&
398 cmt=$(echo bogus | git commit-tree $tree) &&
399 test_when_finished "remove_object $cmt" &&
400 git update-ref refs/heads/bogus $cmt &&
401 test_when_finished "git update-ref -d refs/heads/bogus" &&
403 test_might_fail git rev-list --verify-objects refs/heads/bogus >/dev/null 2>out &&
405 test_i18ngrep -q "error: hash mismatch 63ffffffffffffffffffffffffffffffffffffff" out
408 test_expect_success 'force fsck to ignore double author' '
409 git cat-file commit HEAD >basis &&
410 sed "s/^author .*/&,&/" <basis | tr , \\n >multiple-authors &&
411 new=$(git hash-object -t commit -w --stdin <multiple-authors) &&
412 test_when_finished "remove_object $new" &&
413 git update-ref refs/heads/bogus "$new" &&
414 test_when_finished "git update-ref -d refs/heads/bogus" &&
415 test_must_fail git fsck &&
416 git -c fsck.multipleAuthors=ignore fsck
420 _bz5="$_bz$_bz$_bz$_bz$_bz"
421 _bz20="$_bz5$_bz5$_bz5$_bz5"
423 test_expect_success 'fsck notices blob entry pointing to null sha1' '
424 (git init null-blob &&
426 sha=$(printf "100644 file$_bz$_bz20" |
427 git hash-object -w --stdin -t tree) &&
430 test_i18ngrep "warning.*null sha1" out
434 test_expect_success 'fsck notices submodule entry pointing to null sha1' '
435 (git init null-commit &&
437 sha=$(printf "160000 submodule$_bz$_bz20" |
438 git hash-object -w --stdin -t tree) &&
441 test_i18ngrep "warning.*null sha1" out
445 while read name path pretty; do
446 while read mode type; do
448 test_expect_success "fsck notices $pretty as $type" '
450 git init $name-$type &&
452 echo content >file &&
454 git commit -m base &&
455 blob=$(git rev-parse :file) &&
456 tree=$(git rev-parse HEAD^{tree}) &&
457 value=$(eval "echo \$$type") &&
458 printf "$mode $type %s\t%s" "$value" "$path" >bad &&
459 bad_tree=$(git mktree <bad) &&
462 test_i18ngrep "warning.*tree $bad_tree" out
473 dotgit-unicode .gI${u200c}T .gI{u200c}T
477 dot-backslash-case .\\\\.GIT\\\\foobar
478 dotgit-case-backslash .git\\\\foobar
481 test_expect_success 'fsck allows .Ňit' '
483 git init not-dotgit &&
485 echo content >file &&
487 git commit -m base &&
488 blob=$(git rev-parse :file) &&
489 printf "100644 blob $blob\t.\\305\\207it" >tree &&
490 tree=$(git mktree <tree) &&
492 test_line_count = 0 err
496 test_expect_success 'NUL in commit' '
497 rm -fr nul-in-commit &&
498 git init nul-in-commit &&
501 git commit --allow-empty -m "initial commitQNUL after message" &&
502 git cat-file commit HEAD >original &&
503 q_to_nul <original >munged &&
504 git hash-object -w -t commit --stdin <munged >name &&
505 git branch bad $(cat name) &&
507 test_must_fail git -c fsck.nulInCommit=error fsck 2>warn.1 &&
508 test_i18ngrep nulInCommit warn.1 &&
510 test_i18ngrep nulInCommit warn.2
514 # create a static test repo which is broken by omitting
515 # one particular object ($1, which is looked up via rev-parse
516 # in the new repository).
517 create_repo_missing () {
522 git commit -m one --allow-empty &&
524 echo content >subdir/file &&
525 git add subdir/file &&
527 unrelated=$(echo unrelated | git hash-object --stdin -w) &&
528 git tag -m foo tag $unrelated &&
529 sha1=$(git rev-parse --verify "$1") &&
530 path=$(echo $sha1 | sed 's|..|&/|') &&
531 rm .git/objects/$path
535 test_expect_success 'fsck notices missing blob' '
536 create_repo_missing HEAD:subdir/file &&
537 test_must_fail git -C missing fsck
540 test_expect_success 'fsck notices missing subtree' '
541 create_repo_missing HEAD:subdir &&
542 test_must_fail git -C missing fsck
545 test_expect_success 'fsck notices missing root tree' '
546 create_repo_missing HEAD^{tree} &&
547 test_must_fail git -C missing fsck
550 test_expect_success 'fsck notices missing parent' '
551 create_repo_missing HEAD^ &&
552 test_must_fail git -C missing fsck
555 test_expect_success 'fsck notices missing tagged object' '
556 create_repo_missing tag^{blob} &&
557 test_must_fail git -C missing fsck
560 test_expect_success 'fsck notices ref pointing to missing commit' '
561 create_repo_missing HEAD &&
562 test_must_fail git -C missing fsck
565 test_expect_success 'fsck notices ref pointing to missing tag' '
566 create_repo_missing tag &&
567 test_must_fail git -C missing fsck
570 test_expect_success 'fsck --connectivity-only' '
571 rm -rf connectivity-only &&
572 git init connectivity-only &&
574 cd connectivity-only &&
579 # Drop the index now; we want to be sure that we
580 # recursively notice the broken objects
581 # because they are reachable from refs, not because
582 # they are in the index.
585 # corrupt the blob, but in a way that we can still identify
586 # its type. That lets us see that --connectivity-only is
587 # not actually looking at the contents, but leaves it
588 # free to examine the type if it chooses.
589 empty=.git/objects/e6/9de29bb2d1d6434b8b29ae775ad8c2e48c5391 &&
590 blob=$(echo unrelated | git hash-object -w --stdin) &&
591 mv -f $(sha1_file $blob) $empty &&
593 test_must_fail git fsck --strict &&
594 git fsck --strict --connectivity-only &&
595 tree=$(git rev-parse HEAD:) &&
597 tree=.git/objects/${tree%$suffix}/$suffix &&
599 echo invalid >$tree &&
600 test_must_fail git fsck --strict --connectivity-only
604 test_expect_success 'fsck --connectivity-only with explicit head' '
605 rm -rf connectivity-only &&
606 git init connectivity-only &&
608 cd connectivity-only &&
611 tree=$(git rev-parse HEAD^{tree}) &&
612 remove_object $(git rev-parse HEAD:foo.t) &&
613 test_must_fail git fsck --connectivity-only $tree
617 test_expect_success 'fsck --name-objects' '
618 rm -rf name-objects &&
619 git init name-objects &&
622 test_commit julius caesar.t &&
623 test_commit augustus &&
624 test_commit caesar &&
625 remove_object $(git rev-parse julius:caesar.t) &&
626 test_must_fail git fsck --name-objects >out &&
627 tree=$(git rev-parse --verify julius:) &&
628 test_i18ngrep -E "$tree \((refs/heads/master|HEAD)@\{[0-9]*\}:" out
632 test_expect_success 'alternate objects are correctly blamed' '
633 test_when_finished "rm -rf alt.git .git/objects/info/alternates" &&
634 git init --bare alt.git &&
635 echo "../../alt.git/objects" >.git/objects/info/alternates &&
636 mkdir alt.git/objects/12 &&
637 >alt.git/objects/12/34567890123456789012345678901234567890 &&
638 test_must_fail git fsck >out 2>&1 &&
639 test_i18ngrep alt.git out
642 test_expect_success 'fsck errors in packed objects' '
643 git cat-file commit HEAD >basis &&
644 sed "s/</one/" basis >one &&
645 sed "s/</foo/" basis >two &&
646 one=$(git hash-object -t commit -w one) &&
647 two=$(git hash-object -t commit -w two) &&
652 } | git pack-objects .git/objects/pack/pack
654 test_when_finished "rm -f .git/objects/pack/pack-$pack.*" &&
655 remove_object $one &&
656 remove_object $two &&
657 test_must_fail git fsck 2>out &&
658 test_i18ngrep "error in commit $one.* - bad name" out &&
659 test_i18ngrep "error in commit $two.* - bad name" out &&
663 test_expect_success 'fsck fails on corrupt packfile' '
664 hsh=$(git commit-tree -m mycommit HEAD^{tree}) &&
665 pack=$(echo $hsh | git pack-objects .git/objects/pack/pack) &&
667 # Corrupt the first byte of the first object. (It contains 3 type bits,
668 # at least one of which is not zero, so setting the first byte to 0 is
670 chmod a+w .git/objects/pack/pack-$pack.pack &&
671 printf '\0' | dd of=.git/objects/pack/pack-$pack.pack bs=1 conv=notrunc seek=12 &&
673 test_when_finished "rm -f .git/objects/pack/pack-$pack.*" &&
674 remove_object $hsh &&
675 test_must_fail git fsck 2>out &&
676 test_i18ngrep "checksum mismatch" out
679 test_expect_success 'fsck finds problems in duplicate loose objects' '
680 rm -rf broken-duplicate &&
681 git init broken-duplicate &&
683 cd broken-duplicate &&
684 test_commit duplicate &&
685 # no "-d" here, so we end up with duplicates
687 # now corrupt the loose copy
688 file=$(sha1_file "$(git rev-parse HEAD)") &&
690 echo broken >"$file" &&
691 test_must_fail git fsck
695 test_expect_success 'fsck detects trailing loose garbage (commit)' '
696 git cat-file commit HEAD >basis &&
697 echo bump-commit-sha1 >>basis &&
698 commit=$(git hash-object -w -t commit basis) &&
699 file=$(sha1_file $commit) &&
700 test_when_finished "remove_object $commit" &&
702 echo garbage >>"$file" &&
703 test_must_fail git fsck 2>out &&
704 test_i18ngrep "garbage.*$commit" out
707 test_expect_success 'fsck detects trailing loose garbage (large blob)' '
708 blob=$(echo trailing | git hash-object -w --stdin) &&
709 file=$(sha1_file $blob) &&
710 test_when_finished "remove_object $blob" &&
712 echo garbage >>"$file" &&
713 test_must_fail git -c core.bigfilethreshold=5 fsck 2>out &&
714 test_i18ngrep "garbage.*$blob" out
717 test_expect_success 'fsck detects truncated loose object' '
718 # make it big enough that we know we will truncate in the data
719 # portion, not the header
720 test-tool genrandom truncate 4096 >file &&
721 blob=$(git hash-object -w file) &&
722 file=$(sha1_file $blob) &&
723 test_when_finished "remove_object $blob" &&
724 test_copy_bytes 1024 <"$file" >tmp &&
728 # check both regular and streaming code paths
729 test_must_fail git fsck 2>out &&
730 test_i18ngrep corrupt.*$blob out &&
732 test_must_fail git -c core.bigfilethreshold=128 fsck 2>out &&
733 test_i18ngrep corrupt.*$blob out
736 # for each of type, we have one version which is referenced by another object
737 # (and so while unreachable, not dangling), and another variant which really is
739 test_expect_success 'create dangling-object repository' '
743 blob=$(echo not-dangling | git hash-object -w --stdin) &&
744 dblob=$(echo dangling | git hash-object -w --stdin) &&
745 tree=$(printf "100644 blob %s\t%s\n" $blob one | git mktree) &&
746 dtree=$(printf "100644 blob %s\t%s\n" $blob two | git mktree) &&
747 commit=$(git commit-tree $tree) &&
748 dcommit=$(git commit-tree -p $commit $tree) &&
752 dangling commit $dcommit
758 test_expect_success 'fsck notices dangling objects' '
762 # the output order is non-deterministic, as it comes from a hash
763 sort <actual >actual.sorted &&
764 test_i18ncmp expect actual.sorted
768 test_expect_success 'fsck --connectivity-only notices dangling objects' '
771 git fsck --connectivity-only >actual &&
772 # the output order is non-deterministic, as it comes from a hash
773 sort <actual >actual.sorted &&
774 test_i18ncmp expect actual.sorted
778 test_expect_success 'fsck $name notices bogus $name' '
779 test_must_fail git fsck bogus &&
780 test_must_fail git fsck $ZERO_OID
783 test_expect_success 'bogus head does not fallback to all heads' '
784 # set up a case that will cause a reachability complaint
785 echo to-be-deleted >foo &&
787 blob=$(git rev-parse :foo) &&
788 test_when_finished "git rm --cached foo" &&
789 remove_object $blob &&
790 test_must_fail git fsck $ZERO_OID >out 2>&1 &&
794 # Corrupt the checksum on the index.
795 # Add 1 to the last byte in the SHA.
796 corrupt_index_checksum () {
799 open my $fh, "+<", ".git/index" or die "open: $!";
801 seek $fh, -1, SEEK_END or die "seek: $!";
802 read $fh, my $in_byte, 1 or die "read: $!";
804 $in_value = unpack("C", $in_byte);
805 $out_value = ($in_value + 1) & 255;
807 $out_byte = pack("C", $out_value);
809 seek $fh, -1, SEEK_END or die "seek: $!";
811 close $fh or die "close: $!";
815 # Corrupt the checksum on the index and then
816 # verify that only fsck notices.
817 test_expect_success 'detect corrupt index file in fsck' '
818 cp .git/index .git/index.backup &&
819 test_when_finished "mv .git/index.backup .git/index" &&
820 corrupt_index_checksum &&
821 test_must_fail git fsck --cache 2>errors &&
822 test_i18ngrep "bad index file" errors