t/t5300-pack-object.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2005 Junio C Hamano
   4 #
   5
   6 test_description='git pack-object
   7
   8 '
   9 . ./test-lib.sh
  10
  11 TRASH=$(pwd)
  12
  13 test_expect_success \
  14     'setup' \
  15     'rm -f .git/index* &&
  16      perl -e "print \"a\" x 4096;" > a &&
  17      perl -e "print \"b\" x 4096;" > b &&
  18      perl -e "print \"c\" x 4096;" > c &&
  19      test-genrandom "seed a" 2097152 > a_big &&
  20      test-genrandom "seed b" 2097152 > b_big &&
  21      git update-index --add a a_big b b_big c &&
  22      cat c >d && echo foo >>d && git update-index --add d &&
  23      tree=$(git write-tree) &&
  24      commit=$(git commit-tree $tree </dev/null) && {
  25          echo $tree &&
  26          echo $commit &&
  27          git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\)       .*/\\1/"
  28      } >obj-list && {
  29          git diff-tree --root -p $commit &&
  30          while read object
  31          do
  32             t=$(git cat-file -t $object) &&
  33             git cat-file $t $object || return 1
  34          done <obj-list
  35      } >expect'
  36
  37 test_expect_success \
  38     'pack without delta' \
  39     'packname_1=$(git pack-objects --window=0 test-1 <obj-list)'
  40
  41 test_expect_success \
  42     'pack-objects with bogus arguments' \
  43     'test_must_fail git pack-objects --window=0 test-1 blah blah <obj-list'
  44
  45 rm -fr .git2
  46 mkdir .git2
  47
  48 test_expect_success \
  49     'unpack without delta' \
  50     "GIT_OBJECT_DIRECTORY=.git2/objects &&
  51      export GIT_OBJECT_DIRECTORY &&
  52      git init &&
  53      git unpack-objects -n <test-1-${packname_1}.pack &&
  54      git unpack-objects <test-1-${packname_1}.pack"
  55
  56 unset GIT_OBJECT_DIRECTORY
  57 cd "$TRASH/.git2"
  58
  59 test_expect_success \
  60     'check unpack without delta' \
  61     '(cd ../.git && find objects -type f -print) |
  62      while read path
  63      do
  64          cmp $path ../.git/$path || {
  65              echo $path differs.
  66              return 1
  67          }
  68      done'
  69 cd "$TRASH"
  70
  71 test_expect_success \
  72     'pack with REF_DELTA' \
  73     'pwd &&
  74      packname_2=$(git pack-objects test-2 <obj-list)'
  75
  76 rm -fr .git2
  77 mkdir .git2
  78
  79 test_expect_success \
  80     'unpack with REF_DELTA' \
  81     'GIT_OBJECT_DIRECTORY=.git2/objects &&
  82      export GIT_OBJECT_DIRECTORY &&
  83      git init &&
  84      git unpack-objects -n <test-2-${packname_2}.pack &&
  85      git unpack-objects <test-2-${packname_2}.pack'
  86
  87 unset GIT_OBJECT_DIRECTORY
  88 cd "$TRASH/.git2"
  89 test_expect_success \
  90     'check unpack with REF_DELTA' \
  91     '(cd ../.git && find objects -type f -print) |
  92      while read path
  93      do
  94          cmp $path ../.git/$path || {
  95              echo $path differs.
  96              return 1
  97          }
  98      done'
  99 cd "$TRASH"
 100
 101 test_expect_success \
 102     'pack with OFS_DELTA' \
 103     'pwd &&
 104      packname_3=$(git pack-objects --delta-base-offset test-3 <obj-list)'
 105
 106 rm -fr .git2
 107 mkdir .git2
 108
 109 test_expect_success \
 110     'unpack with OFS_DELTA' \
 111     'GIT_OBJECT_DIRECTORY=.git2/objects &&
 112      export GIT_OBJECT_DIRECTORY &&
 113      git init &&
 114      git unpack-objects -n <test-3-${packname_3}.pack &&
 115      git unpack-objects <test-3-${packname_3}.pack'
 116
 117 unset GIT_OBJECT_DIRECTORY
 118 cd "$TRASH/.git2"
 119 test_expect_success \
 120     'check unpack with OFS_DELTA' \
 121     '(cd ../.git && find objects -type f -print) |
 122      while read path
 123      do
 124          cmp $path ../.git/$path || {
 125              echo $path differs.
 126              return 1
 127          }
 128      done'
 129 cd "$TRASH"
 130
 131 test_expect_success 'compare delta flavors' '
 132         perl -e '\''
 133                 defined($_ = -s $_) or die for @ARGV;
 134                 exit 1 if $ARGV[0] <= $ARGV[1];
 135         '\'' test-2-$packname_2.pack test-3-$packname_3.pack
 136 '
 137
 138 rm -fr .git2
 139 mkdir .git2
 140
 141 test_expect_success \
 142     'use packed objects' \
 143     'GIT_OBJECT_DIRECTORY=.git2/objects &&
 144      export GIT_OBJECT_DIRECTORY &&
 145      git init &&
 146      cp test-1-${packname_1}.pack test-1-${packname_1}.idx .git2/objects/pack && {
 147          git diff-tree --root -p $commit &&
 148          while read object
 149          do
 150             t=$(git cat-file -t $object) &&
 151             git cat-file $t $object || return 1
 152          done <obj-list
 153     } >current &&
 154     cmp expect current'
 155
 156 test_expect_success \
 157     'use packed deltified (REF_DELTA) objects' \
 158     'GIT_OBJECT_DIRECTORY=.git2/objects &&
 159      export GIT_OBJECT_DIRECTORY &&
 160      rm -f .git2/objects/pack/test-* &&
 161      cp test-2-${packname_2}.pack test-2-${packname_2}.idx .git2/objects/pack && {
 162          git diff-tree --root -p $commit &&
 163          while read object
 164          do
 165             t=$(git cat-file -t $object) &&
 166             git cat-file $t $object || return 1
 167          done <obj-list
 168     } >current &&
 169     cmp expect current'
 170
 171 test_expect_success \
 172     'use packed deltified (OFS_DELTA) objects' \
 173     'GIT_OBJECT_DIRECTORY=.git2/objects &&
 174      export GIT_OBJECT_DIRECTORY &&
 175      rm -f .git2/objects/pack/test-* &&
 176      cp test-3-${packname_3}.pack test-3-${packname_3}.idx .git2/objects/pack && {
 177          git diff-tree --root -p $commit &&
 178          while read object
 179          do
 180             t=$(git cat-file -t $object) &&
 181             git cat-file $t $object || return 1
 182          done <obj-list
 183     } >current &&
 184     cmp expect current'
 185
 186 unset GIT_OBJECT_DIRECTORY
 187
 188 test_expect_success 'survive missing objects/pack directory' '
 189         (
 190                 rm -fr missing-pack &&
 191                 mkdir missing-pack &&
 192                 cd missing-pack &&
 193                 git init &&
 194                 GOP=.git/objects/pack
 195                 rm -fr $GOP &&
 196                 git index-pack --stdin --keep=test <../test-3-${packname_3}.pack &&
 197                 test -f $GOP/pack-${packname_3}.pack &&
 198                 cmp $GOP/pack-${packname_3}.pack ../test-3-${packname_3}.pack &&
 199                 test -f $GOP/pack-${packname_3}.idx &&
 200                 cmp $GOP/pack-${packname_3}.idx ../test-3-${packname_3}.idx &&
 201                 test -f $GOP/pack-${packname_3}.keep
 202         )
 203 '
 204
 205 test_expect_success \
 206     'verify pack' \
 207     'git verify-pack    test-1-${packname_1}.idx \
 208                         test-2-${packname_2}.idx \
 209                         test-3-${packname_3}.idx'
 210
 211 test_expect_success \
 212     'verify pack -v' \
 213     'git verify-pack -v test-1-${packname_1}.idx \
 214                         test-2-${packname_2}.idx \
 215                         test-3-${packname_3}.idx'
 216
 217 test_expect_success \
 218     'verify-pack catches mismatched .idx and .pack files' \
 219     'cat test-1-${packname_1}.idx >test-3.idx &&
 220      cat test-2-${packname_2}.pack >test-3.pack &&
 221      if git verify-pack test-3.idx
 222      then false
 223      else :;
 224      fi'
 225
 226 test_expect_success \
 227     'verify-pack catches a corrupted pack signature' \
 228     'cat test-1-${packname_1}.pack >test-3.pack &&
 229      echo | dd of=test-3.pack count=1 bs=1 conv=notrunc seek=2 &&
 230      if git verify-pack test-3.idx
 231      then false
 232      else :;
 233      fi'
 234
 235 test_expect_success \
 236     'verify-pack catches a corrupted pack version' \
 237     'cat test-1-${packname_1}.pack >test-3.pack &&
 238      echo | dd of=test-3.pack count=1 bs=1 conv=notrunc seek=7 &&
 239      if git verify-pack test-3.idx
 240      then false
 241      else :;
 242      fi'
 243
 244 test_expect_success \
 245     'verify-pack catches a corrupted type/size of the 1st packed object data' \
 246     'cat test-1-${packname_1}.pack >test-3.pack &&
 247      echo | dd of=test-3.pack count=1 bs=1 conv=notrunc seek=12 &&
 248      if git verify-pack test-3.idx
 249      then false
 250      else :;
 251      fi'
 252
 253 test_expect_success \
 254     'verify-pack catches a corrupted sum of the index file itself' \
 255     'l=$(wc -c <test-3.idx) &&
 256      l=$(expr $l - 20) &&
 257      cat test-1-${packname_1}.pack >test-3.pack &&
 258      printf "%20s" "" | dd of=test-3.idx count=20 bs=1 conv=notrunc seek=$l &&
 259      if git verify-pack test-3.pack
 260      then false
 261      else :;
 262      fi'
 263
 264 test_expect_success \
 265     'build pack index for an existing pack' \
 266     'cat test-1-${packname_1}.pack >test-3.pack &&
 267      git index-pack -o tmp.idx test-3.pack &&
 268      cmp tmp.idx test-1-${packname_1}.idx &&
 269
 270      git index-pack test-3.pack &&
 271      cmp test-3.idx test-1-${packname_1}.idx &&
 272
 273      cat test-2-${packname_2}.pack >test-3.pack &&
 274      git index-pack -o tmp.idx test-2-${packname_2}.pack &&
 275      cmp tmp.idx test-2-${packname_2}.idx &&
 276
 277      git index-pack test-3.pack &&
 278      cmp test-3.idx test-2-${packname_2}.idx &&
 279
 280      cat test-3-${packname_3}.pack >test-3.pack &&
 281      git index-pack -o tmp.idx test-3-${packname_3}.pack &&
 282      cmp tmp.idx test-3-${packname_3}.idx &&
 283
 284      git index-pack test-3.pack &&
 285      cmp test-3.idx test-3-${packname_3}.idx &&
 286
 287      cat test-1-${packname_1}.pack >test-4.pack &&
 288      rm -f test-4.keep &&
 289      git index-pack --keep=why test-4.pack &&
 290      cmp test-1-${packname_1}.idx test-4.idx &&
 291      test -f test-4.keep &&
 292
 293      :'
 294
 295 test_expect_success 'unpacking with --strict' '
 296
 297         for j in a b c d e f g
 298         do
 299                 for i in 0 1 2 3 4 5 6 7 8 9
 300                 do
 301                         o=$(echo $j$i | git hash-object -w --stdin) &&
 302                         echo "100644 $o 0 $j$i"
 303                 done
 304         done >LIST &&
 305         rm -f .git/index &&
 306         git update-index --index-info <LIST &&
 307         LIST=$(git write-tree) &&
 308         rm -f .git/index &&
 309         head -n 10 LIST | git update-index --index-info &&
 310         LI=$(git write-tree) &&
 311         rm -f .git/index &&
 312         tail -n 10 LIST | git update-index --index-info &&
 313         ST=$(git write-tree) &&
 314         PACK5=$( git rev-list --objects "$LIST" "$LI" "$ST" | \
 315                 git pack-objects test-5 ) &&
 316         PACK6=$( (
 317                         echo "$LIST"
 318                         echo "$LI"
 319                         echo "$ST"
 320                  ) | git pack-objects test-6 ) &&
 321         test_create_repo test-5 &&
 322         (
 323                 cd test-5 &&
 324                 git unpack-objects --strict <../test-5-$PACK5.pack &&
 325                 git ls-tree -r $LIST &&
 326                 git ls-tree -r $LI &&
 327                 git ls-tree -r $ST
 328         ) &&
 329         test_create_repo test-6 &&
 330         (
 331                 # tree-only into empty repo -- many unreachables
 332                 cd test-6 &&
 333                 test_must_fail git unpack-objects --strict <../test-6-$PACK6.pack
 334         ) &&
 335         (
 336                 # already populated -- no unreachables
 337                 cd test-5 &&
 338                 git unpack-objects --strict <../test-6-$PACK6.pack
 339         )
 340 '
 341
 342 test_expect_success 'index-pack with --strict' '
 343
 344         for j in a b c d e f g
 345         do
 346                 for i in 0 1 2 3 4 5 6 7 8 9
 347                 do
 348                         o=$(echo $j$i | git hash-object -w --stdin) &&
 349                         echo "100644 $o 0 $j$i"
 350                 done
 351         done >LIST &&
 352         rm -f .git/index &&
 353         git update-index --index-info <LIST &&
 354         LIST=$(git write-tree) &&
 355         rm -f .git/index &&
 356         head -n 10 LIST | git update-index --index-info &&
 357         LI=$(git write-tree) &&
 358         rm -f .git/index &&
 359         tail -n 10 LIST | git update-index --index-info &&
 360         ST=$(git write-tree) &&
 361         PACK5=$( git rev-list --objects "$LIST" "$LI" "$ST" | \
 362                 git pack-objects test-5 ) &&
 363         PACK6=$( (
 364                         echo "$LIST"
 365                         echo "$LI"
 366                         echo "$ST"
 367                  ) | git pack-objects test-6 ) &&
 368         test_create_repo test-7 &&
 369         (
 370                 cd test-7 &&
 371                 git index-pack --strict --stdin <../test-5-$PACK5.pack &&
 372                 git ls-tree -r $LIST &&
 373                 git ls-tree -r $LI &&
 374                 git ls-tree -r $ST
 375         ) &&
 376         test_create_repo test-8 &&
 377         (
 378                 # tree-only into empty repo -- many unreachables
 379                 cd test-8 &&
 380                 test_must_fail git index-pack --strict --stdin <../test-6-$PACK6.pack
 381         ) &&
 382         (
 383                 # already populated -- no unreachables
 384                 cd test-7 &&
 385                 git index-pack --strict --stdin <../test-6-$PACK6.pack
 386         )
 387 '
 388
 389 test_expect_success 'honor pack.packSizeLimit' '
 390         git config pack.packSizeLimit 3m &&
 391         packname_10=$(git pack-objects test-10 <obj-list) &&
 392         test 2 = $(ls test-10-*.pack | wc -l)
 393 '
 394
 395 test_expect_success 'verify resulting packs' '
 396         git verify-pack test-10-*.pack
 397 '
 398
 399 test_expect_success 'tolerate packsizelimit smaller than biggest object' '
 400         git config pack.packSizeLimit 1 &&
 401         packname_11=$(git pack-objects test-11 <obj-list) &&
 402         test 5 = $(ls test-11-*.pack | wc -l)
 403 '
 404
 405 test_expect_success 'verify resulting packs' '
 406         git verify-pack test-11-*.pack
 407 '
 408
 409 test_expect_success 'set up pack for non-repo tests' '
 410         # make sure we have a pack with no matching index file
 411         cp test-1-*.pack foo.pack
 412 '
 413
 414 test_expect_success 'index-pack --stdin complains of non-repo' '
 415         nongit test_must_fail git index-pack --stdin <foo.pack &&
 416         test_path_is_missing non-repo/.git
 417 '
 418
 419 test_expect_success 'index-pack <pack> works in non-repo' '
 420         nongit git index-pack ../foo.pack &&
 421         test_path_is_file foo.idx
 422 '
 423
 424 #
 425 # WARNING!
 426 #
 427 # The following test is destructive.  Please keep the next
 428 # two tests at the end of this file.
 429 #
 430
 431 test_expect_success \
 432     'fake a SHA1 hash collision' \
 433     'test -f    .git/objects/c8/2de19312b6c3695c0c18f70709a6c535682a67 &&
 434      cp -f      .git/objects/9d/235ed07cd19811a6ceb342de82f190e49c9f68 \
 435                 .git/objects/c8/2de19312b6c3695c0c18f70709a6c535682a67'
 436
 437 test_expect_success \
 438     'make sure index-pack detects the SHA1 collision' \
 439     'test_must_fail git index-pack -o bad.idx test-3.pack 2>msg &&
 440      test_i18ngrep "SHA1 COLLISION FOUND" msg'
 441
 442 test_expect_success \
 443     'make sure index-pack detects the SHA1 collision (large blobs)' \
 444     'test_must_fail git -c core.bigfilethreshold=1 index-pack -o bad.idx test-3.pack 2>msg &&
 445      test_i18ngrep "SHA1 COLLISION FOUND" msg'
 446
 447 test_done