t/t1450-fsck.sh

   1 #!/bin/sh
   2
   3 test_description='git fsck random collection of tests
   4
   5 * (HEAD) B
   6 * (master) A
   7 '
   8
   9 . ./test-lib.sh
  10
  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 &&
  18         git tag -d A B &&
  19         git reflog expire --expire=now --all &&
  20         >empty
  21 '
  22
  23 test_expect_success 'loose objects borrowed from alternate are not missing' '
  24         mkdir another &&
  25         (
  26                 cd another &&
  27                 git init &&
  28                 echo ../../../.git/objects >.git/objects/info/alternates &&
  29                 test_commit C fileC one &&
  30                 git fsck --no-dangling >../actual 2>&1
  31         ) &&
  32         test_cmp empty actual
  33 '
  34
  35 test_expect_success 'HEAD is part of refs, valid objects appear valid' '
  36         git fsck >actual 2>&1 &&
  37         test_cmp empty actual
  38 '
  39
  40 # Corruption tests follow.  Make sure to remove all traces of the
  41 # specific corruption you test afterwards, lest a later test trip over
  42 # it.
  43
  44 test_expect_success 'setup: helpers for corruption tests' '
  45         sha1_file() {
  46                 echo "$*" | sed "s#..#.git/objects/&/#"
  47         } &&
  48
  49         remove_object() {
  50                 file=$(sha1_file "$*") &&
  51                 test -e "$file" &&
  52                 rm -f "$file"
  53         }
  54 '
  55
  56 test_expect_success 'object with bad sha1' '
  57         sha=$(echo blob | git hash-object -w --stdin) &&
  58         old=$(echo $sha | sed "s+^..+&/+") &&
  59         new=$(dirname $old)/ffffffffffffffffffffffffffffffffffffff &&
  60         sha="$(dirname $new)$(basename $new)" &&
  61         mv .git/objects/$old .git/objects/$new &&
  62         test_when_finished "remove_object $sha" &&
  63         git update-index --add --cacheinfo 100644 $sha foo &&
  64         test_when_finished "git read-tree -u --reset HEAD" &&
  65         tree=$(git write-tree) &&
  66         test_when_finished "remove_object $tree" &&
  67         cmt=$(echo bogus | git commit-tree $tree) &&
  68         test_when_finished "remove_object $cmt" &&
  69         git update-ref refs/heads/bogus $cmt &&
  70         test_when_finished "git update-ref -d refs/heads/bogus" &&
  71
  72         test_must_fail git fsck 2>out &&
  73         cat out &&
  74         grep "$sha.*corrupt" out
  75 '
  76
  77 test_expect_success 'branch pointing to non-commit' '
  78         git rev-parse HEAD^{tree} >.git/refs/heads/invalid &&
  79         test_when_finished "git update-ref -d refs/heads/invalid" &&
  80         git fsck 2>out &&
  81         cat out &&
  82         grep "not a commit" out
  83 '
  84
  85 test_expect_success 'email without @ is okay' '
  86         git cat-file commit HEAD >basis &&
  87         sed "s/@/AT/" basis >okay &&
  88         new=$(git hash-object -t commit -w --stdin <okay) &&
  89         test_when_finished "remove_object $new" &&
  90         git update-ref refs/heads/bogus "$new" &&
  91         test_when_finished "git update-ref -d refs/heads/bogus" &&
  92         git fsck 2>out &&
  93         cat out &&
  94         ! grep "commit $new" out
  95 '
  96
  97 test_expect_success 'email with embedded > is not okay' '
  98         git cat-file commit HEAD >basis &&
  99         sed "s/@[a-z]/&>/" basis >bad-email &&
 100         new=$(git hash-object -t commit -w --stdin <bad-email) &&
 101         test_when_finished "remove_object $new" &&
 102         git update-ref refs/heads/bogus "$new" &&
 103         test_when_finished "git update-ref -d refs/heads/bogus" &&
 104         test_must_fail git fsck 2>out &&
 105         cat out &&
 106         grep "error in commit $new" out
 107 '
 108
 109 test_expect_success 'missing < email delimiter is reported nicely' '
 110         git cat-file commit HEAD >basis &&
 111         sed "s/<//" basis >bad-email-2 &&
 112         new=$(git hash-object -t commit -w --stdin <bad-email-2) &&
 113         test_when_finished "remove_object $new" &&
 114         git update-ref refs/heads/bogus "$new" &&
 115         test_when_finished "git update-ref -d refs/heads/bogus" &&
 116         test_must_fail git fsck 2>out &&
 117         cat out &&
 118         grep "error in commit $new.* - bad name" out
 119 '
 120
 121 test_expect_success 'missing email is reported nicely' '
 122         git cat-file commit HEAD >basis &&
 123         sed "s/[a-z]* <[^>]*>//" basis >bad-email-3 &&
 124         new=$(git hash-object -t commit -w --stdin <bad-email-3) &&
 125         test_when_finished "remove_object $new" &&
 126         git update-ref refs/heads/bogus "$new" &&
 127         test_when_finished "git update-ref -d refs/heads/bogus" &&
 128         test_must_fail git fsck 2>out &&
 129         cat out &&
 130         grep "error in commit $new.* - missing email" out
 131 '
 132
 133 test_expect_success '> in name is reported' '
 134         git cat-file commit HEAD >basis &&
 135         sed "s/ </> </" basis >bad-email-4 &&
 136         new=$(git hash-object -t commit -w --stdin <bad-email-4) &&
 137         test_when_finished "remove_object $new" &&
 138         git update-ref refs/heads/bogus "$new" &&
 139         test_when_finished "git update-ref -d refs/heads/bogus" &&
 140         test_must_fail git fsck 2>out &&
 141         cat out &&
 142         grep "error in commit $new" out
 143 '
 144
 145 # date is 2^64 + 1
 146 test_expect_success 'integer overflow in timestamps is reported' '
 147         git cat-file commit HEAD >basis &&
 148         sed "s/^\\(author .*>\\) [0-9]*/\\1 18446744073709551617/" \
 149                 <basis >bad-timestamp &&
 150         new=$(git hash-object -t commit -w --stdin <bad-timestamp) &&
 151         test_when_finished "remove_object $new" &&
 152         git update-ref refs/heads/bogus "$new" &&
 153         test_when_finished "git update-ref -d refs/heads/bogus" &&
 154         test_must_fail git fsck 2>out &&
 155         cat out &&
 156         grep "error in commit $new.*integer overflow" out
 157 '
 158
 159 test_expect_success 'malformatted tree object' '
 160         test_when_finished "git update-ref -d refs/tags/wrong" &&
 161         test_when_finished "remove_object \$T" &&
 162         T=$(
 163                 GIT_INDEX_FILE=test-index &&
 164                 export GIT_INDEX_FILE &&
 165                 rm -f test-index &&
 166                 >x &&
 167                 git add x &&
 168                 T=$(git write-tree) &&
 169                 (
 170                         git cat-file tree $T &&
 171                         git cat-file tree $T
 172                 ) |
 173                 git hash-object -w -t tree --stdin
 174         ) &&
 175         test_must_fail git fsck 2>out &&
 176         grep "error in tree .*contains duplicate file entries" out
 177 '
 178
 179 test_expect_success 'tag pointing to nonexistent' '
 180         cat >invalid-tag <<-\EOF &&
 181         object ffffffffffffffffffffffffffffffffffffffff
 182         type commit
 183         tag invalid
 184         tagger T A Gger <tagger@example.com> 1234567890 -0000
 185
 186         This is an invalid tag.
 187         EOF
 188
 189         tag=$(git hash-object -t tag -w --stdin <invalid-tag) &&
 190         test_when_finished "remove_object $tag" &&
 191         echo $tag >.git/refs/tags/invalid &&
 192         test_when_finished "git update-ref -d refs/tags/invalid" &&
 193         test_must_fail git fsck --tags >out &&
 194         cat out &&
 195         grep "broken link" out
 196 '
 197
 198 test_expect_success 'tag pointing to something else than its type' '
 199         sha=$(echo blob | git hash-object -w --stdin) &&
 200         test_when_finished "remove_object $sha" &&
 201         cat >wrong-tag <<-EOF &&
 202         object $sha
 203         type commit
 204         tag wrong
 205         tagger T A Gger <tagger@example.com> 1234567890 -0000
 206
 207         This is an invalid tag.
 208         EOF
 209
 210         tag=$(git hash-object -t tag -w --stdin <wrong-tag) &&
 211         test_when_finished "remove_object $tag" &&
 212         echo $tag >.git/refs/tags/wrong &&
 213         test_when_finished "git update-ref -d refs/tags/wrong" &&
 214         test_must_fail git fsck --tags
 215 '
 216
 217 test_expect_success 'cleaned up' '
 218         git fsck >actual 2>&1 &&
 219         test_cmp empty actual
 220 '
 221
 222 test_expect_success 'rev-list --verify-objects' '
 223         git rev-list --verify-objects --all >/dev/null 2>out &&
 224         test_cmp empty out
 225 '
 226
 227 test_expect_success 'rev-list --verify-objects with bad sha1' '
 228         sha=$(echo blob | git hash-object -w --stdin) &&
 229         old=$(echo $sha | sed "s+^..+&/+") &&
 230         new=$(dirname $old)/ffffffffffffffffffffffffffffffffffffff &&
 231         sha="$(dirname $new)$(basename $new)" &&
 232         mv .git/objects/$old .git/objects/$new &&
 233         test_when_finished "remove_object $sha" &&
 234         git update-index --add --cacheinfo 100644 $sha foo &&
 235         test_when_finished "git read-tree -u --reset HEAD" &&
 236         tree=$(git write-tree) &&
 237         test_when_finished "remove_object $tree" &&
 238         cmt=$(echo bogus | git commit-tree $tree) &&
 239         test_when_finished "remove_object $cmt" &&
 240         git update-ref refs/heads/bogus $cmt &&
 241         test_when_finished "git update-ref -d refs/heads/bogus" &&
 242
 243         test_might_fail git rev-list --verify-objects refs/heads/bogus >/dev/null 2>out &&
 244         cat out &&
 245         grep -q "error: sha1 mismatch 63ffffffffffffffffffffffffffffffffffffff" out
 246 '
 247
 248 _bz='\0'
 249 _bz5="$_bz$_bz$_bz$_bz$_bz"
 250 _bz20="$_bz5$_bz5$_bz5$_bz5"
 251
 252 test_expect_success 'fsck notices blob entry pointing to null sha1' '
 253         (git init null-blob &&
 254          cd null-blob &&
 255          sha=$(printf "100644 file$_bz$_bz20" |
 256                git hash-object -w --stdin -t tree) &&
 257           git fsck 2>out &&
 258           cat out &&
 259           grep "warning.*null sha1" out
 260         )
 261 '
 262
 263 test_expect_success 'fsck notices submodule entry pointing to null sha1' '
 264         (git init null-commit &&
 265          cd null-commit &&
 266          sha=$(printf "160000 submodule$_bz$_bz20" |
 267                git hash-object -w --stdin -t tree) &&
 268           git fsck 2>out &&
 269           cat out &&
 270           grep "warning.*null sha1" out
 271         )
 272 '
 273
 274 test_expect_success 'fsck notices "." and ".." in trees' '
 275         (
 276                 git init dots &&
 277                 cd dots &&
 278                 blob=$(echo foo | git hash-object -w --stdin) &&
 279                 tab=$(printf "\\t") &&
 280                 git mktree <<-EOF &&
 281                 100644 blob $blob$tab.
 282                 100644 blob $blob$tab..
 283                 EOF
 284                 git fsck 2>out &&
 285                 cat out &&
 286                 grep "warning.*\\." out
 287         )
 288 '
 289
 290 test_expect_success 'fsck notices ".git" in trees' '
 291         (
 292                 git init dotgit &&
 293                 cd dotgit &&
 294                 blob=$(echo foo | git hash-object -w --stdin) &&
 295                 tab=$(printf "\\t") &&
 296                 git mktree <<-EOF &&
 297                 100644 blob $blob$tab.git
 298                 EOF
 299                 git fsck 2>out &&
 300                 cat out &&
 301                 grep "warning.*\\.git" out
 302         )
 303 '
 304
 305 # create a static test repo which is broken by omitting
 306 # one particular object ($1, which is looked up via rev-parse
 307 # in the new repository).
 308 create_repo_missing () {
 309         rm -rf missing &&
 310         git init missing &&
 311         (
 312                 cd missing &&
 313                 git commit -m one --allow-empty &&
 314                 mkdir subdir &&
 315                 echo content >subdir/file &&
 316                 git add subdir/file &&
 317                 git commit -m two &&
 318                 unrelated=$(echo unrelated | git hash-object --stdin -w) &&
 319                 git tag -m foo tag $unrelated &&
 320                 sha1=$(git rev-parse --verify "$1") &&
 321                 path=$(echo $sha1 | sed 's|..|&/|') &&
 322                 rm .git/objects/$path
 323         )
 324 }
 325
 326 test_expect_success 'fsck notices missing blob' '
 327         create_repo_missing HEAD:subdir/file &&
 328         test_must_fail git -C missing fsck
 329 '
 330
 331 test_expect_success 'fsck notices missing subtree' '
 332         create_repo_missing HEAD:subdir &&
 333         test_must_fail git -C missing fsck
 334 '
 335
 336 test_expect_success 'fsck notices missing root tree' '
 337         create_repo_missing HEAD^{tree} &&
 338         test_must_fail git -C missing fsck
 339 '
 340
 341 test_expect_success 'fsck notices missing parent' '
 342         create_repo_missing HEAD^ &&
 343         test_must_fail git -C missing fsck
 344 '
 345
 346 test_expect_success 'fsck notices missing tagged object' '
 347         create_repo_missing tag^{blob} &&
 348         test_must_fail git -C missing fsck
 349 '
 350
 351 test_expect_success 'fsck notices ref pointing to missing commit' '
 352         create_repo_missing HEAD &&
 353         test_must_fail git -C missing fsck
 354 '
 355
 356 test_expect_success 'fsck notices ref pointing to missing tag' '
 357         create_repo_missing tag &&
 358         test_must_fail git -C missing fsck
 359 '
 360
 361 test_done