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 TEST_PASSES_SANITIZE_LEAK=true
   9 . ./test-lib.sh
  10
  11 test_expect_success 'setup' '
  12         rm -f .git/index* &&
  13         perl -e "print \"a\" x 4096;" >a &&
  14         perl -e "print \"b\" x 4096;" >b &&
  15         perl -e "print \"c\" x 4096;" >c &&
  16         test-tool genrandom "seed a" 2097152 >a_big &&
  17         test-tool genrandom "seed b" 2097152 >b_big &&
  18         git update-index --add a a_big b b_big c &&
  19         cat c >d && echo foo >>d && git update-index --add d &&
  20         tree=$(git write-tree) &&
  21         commit=$(git commit-tree $tree </dev/null) &&
  22         {
  23                 echo $tree &&
  24                 echo $commit &&
  25                 git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\)        .*/\\1/"
  26         } >obj-list &&
  27         {
  28                 git diff-tree --root -p $commit &&
  29                 while read object
  30                 do
  31                         t=$(git cat-file -t $object) &&
  32                         git cat-file $t $object || return 1
  33                 done <obj-list
  34         } >expect
  35 '
  36
  37 test_expect_success 'setup pack-object <stdin' '
  38         git init pack-object-stdin &&
  39         test_commit -C pack-object-stdin one &&
  40         test_commit -C pack-object-stdin two
  41
  42 '
  43
  44 test_expect_success 'pack-object <stdin parsing: basic [|--revs]' '
  45         cat >in <<-EOF &&
  46         $(git -C pack-object-stdin rev-parse one)
  47         EOF
  48
  49         git -C pack-object-stdin pack-objects basic-stdin <in &&
  50         idx=$(echo pack-object-stdin/basic-stdin-*.idx) &&
  51         git show-index <"$idx" >actual &&
  52         test_line_count = 1 actual &&
  53
  54         git -C pack-object-stdin pack-objects --revs basic-stdin-revs <in &&
  55         idx=$(echo pack-object-stdin/basic-stdin-revs-*.idx) &&
  56         git show-index <"$idx" >actual &&
  57         test_line_count = 3 actual
  58 '
  59
  60 test_expect_success 'pack-object <stdin parsing: [|--revs] bad line' '
  61         cat >in <<-EOF &&
  62         $(git -C pack-object-stdin rev-parse one)
  63         garbage
  64         $(git -C pack-object-stdin rev-parse two)
  65         EOF
  66
  67         sed "s/^> //g" >err.expect <<-EOF &&
  68         fatal: expected object ID, got garbage:
  69         >  garbage
  70
  71         EOF
  72         test_must_fail git -C pack-object-stdin pack-objects bad-line-stdin <in 2>err.actual &&
  73         test_cmp err.expect err.actual &&
  74
  75         cat >err.expect <<-EOF &&
  76         fatal: bad revision '"'"'garbage'"'"'
  77         EOF
  78         test_must_fail git -C pack-object-stdin pack-objects --revs bad-line-stdin-revs <in 2>err.actual &&
  79         test_cmp err.expect err.actual
  80 '
  81
  82 test_expect_success 'pack-object <stdin parsing: [|--revs] empty line' '
  83         cat >in <<-EOF &&
  84         $(git -C pack-object-stdin rev-parse one)
  85
  86         $(git -C pack-object-stdin rev-parse two)
  87         EOF
  88
  89         sed -e "s/^> //g" -e "s/Z$//g" >err.expect <<-EOF &&
  90         fatal: expected object ID, got garbage:
  91         >  Z
  92
  93         EOF
  94         test_must_fail git -C pack-object-stdin pack-objects empty-line-stdin <in 2>err.actual &&
  95         test_cmp err.expect err.actual &&
  96
  97         git -C pack-object-stdin pack-objects --revs empty-line-stdin-revs <in &&
  98         idx=$(echo pack-object-stdin/empty-line-stdin-revs-*.idx) &&
  99         git show-index <"$idx" >actual &&
 100         test_line_count = 3 actual
 101 '
 102
 103 test_expect_success 'pack-object <stdin parsing: [|--revs] with --stdin' '
 104         cat >in <<-EOF &&
 105         $(git -C pack-object-stdin rev-parse one)
 106         $(git -C pack-object-stdin rev-parse two)
 107         EOF
 108
 109         # There is the "--stdin-packs is incompatible with --revs"
 110         # test below, but we should make sure that the revision.c
 111         # --stdin is not picked up
 112         cat >err.expect <<-EOF &&
 113         fatal: disallowed abbreviated or ambiguous option '"'"'stdin'"'"'
 114         EOF
 115         test_must_fail git -C pack-object-stdin pack-objects stdin-with-stdin-option --stdin <in 2>err.actual &&
 116         test_cmp err.expect err.actual &&
 117
 118         test_must_fail git -C pack-object-stdin pack-objects --stdin --revs stdin-with-stdin-option-revs 2>err.actual <in &&
 119         test_cmp err.expect err.actual
 120 '
 121
 122 test_expect_success 'pack-object <stdin parsing: --stdin-packs handles garbage' '
 123         cat >in <<-EOF &&
 124         $(git -C pack-object-stdin rev-parse one)
 125         $(git -C pack-object-stdin rev-parse two)
 126         EOF
 127
 128         # That we get "two" and not "one" has to do with OID
 129         # ordering. It happens to be the same here under SHA-1 and
 130         # SHA-256. See commentary in pack-objects.c
 131         cat >err.expect <<-EOF &&
 132         fatal: could not find pack '"'"'$(git -C pack-object-stdin rev-parse two)'"'"'
 133         EOF
 134         test_must_fail git \
 135                 -C pack-object-stdin \
 136                 pack-objects stdin-with-stdin-option --stdin-packs \
 137                 <in 2>err.actual &&
 138         test_cmp err.expect err.actual
 139 '
 140
 141 # usage: check_deltas <stderr_from_pack_objects> <cmp_op> <nr_deltas>
 142 # e.g.: check_deltas stderr -gt 0
 143 check_deltas() {
 144         deltas=$(perl -lne '/delta (\d+)/ and print $1' "$1") &&
 145         shift &&
 146         if ! test "$deltas" "$@"
 147         then
 148                 echo >&2 "unexpected number of deltas (compared $delta $*)"
 149                 return 1
 150         fi
 151 }
 152
 153 test_expect_success 'pack without delta' '
 154         packname_1=$(git pack-objects --progress --window=0 test-1 \
 155                         <obj-list 2>stderr) &&
 156         check_deltas stderr = 0
 157 '
 158
 159 test_expect_success 'negative window clamps to 0' '
 160         git pack-objects --progress --window=-1 neg-window <obj-list 2>stderr &&
 161         check_deltas stderr = 0
 162 '
 163
 164 test_expect_success 'pack-objects with bogus arguments' '
 165         test_must_fail git pack-objects --window=0 test-1 blah blah <obj-list
 166 '
 167
 168 check_unpack () {
 169         local packname="$1" &&
 170         local object_list="$2" &&
 171         local git_config="$3" &&
 172         test_when_finished "rm -rf git2" &&
 173         git $git_config init --bare git2 &&
 174         (
 175                 git $git_config -C git2 unpack-objects -n <"$packname".pack &&
 176                 git $git_config -C git2 unpack-objects <"$packname".pack &&
 177                 git $git_config -C git2 cat-file --batch-check="%(objectname)"
 178         ) <"$object_list" >current &&
 179         cmp "$object_list" current
 180 }
 181
 182 test_expect_success 'unpack without delta' '
 183         check_unpack test-1-${packname_1} obj-list
 184 '
 185
 186 BATCH_CONFIGURATION='-c core.fsync=loose-object -c core.fsyncmethod=batch'
 187
 188 test_expect_success 'unpack without delta (core.fsyncmethod=batch)' '
 189         check_unpack test-1-${packname_1} obj-list "$BATCH_CONFIGURATION"
 190 '
 191
 192 test_expect_success 'pack with REF_DELTA' '
 193         packname_2=$(git pack-objects --progress test-2 <obj-list 2>stderr) &&
 194         check_deltas stderr -gt 0
 195 '
 196
 197 test_expect_success 'unpack with REF_DELTA' '
 198         check_unpack test-2-${packname_2} obj-list
 199 '
 200
 201 test_expect_success 'unpack with REF_DELTA (core.fsyncmethod=batch)' '
 202        check_unpack test-2-${packname_2} obj-list "$BATCH_CONFIGURATION"
 203 '
 204
 205 test_expect_success 'pack with OFS_DELTA' '
 206         packname_3=$(git pack-objects --progress --delta-base-offset test-3 \
 207                         <obj-list 2>stderr) &&
 208         check_deltas stderr -gt 0
 209 '
 210
 211 test_expect_success 'unpack with OFS_DELTA' '
 212         check_unpack test-3-${packname_3} obj-list
 213 '
 214
 215 test_expect_success 'unpack with OFS_DELTA (core.fsyncmethod=batch)' '
 216         check_unpack test-3-${packname_3} obj-list "$BATCH_CONFIGURATION"
 217 '
 218
 219 test_expect_success 'compare delta flavors' '
 220         perl -e '\''
 221                 defined($_ = -s $_) or die for @ARGV;
 222                 exit 1 if $ARGV[0] <= $ARGV[1];
 223         '\'' test-2-$packname_2.pack test-3-$packname_3.pack
 224 '
 225
 226 check_use_objects () {
 227         test_when_finished "rm -rf git2" &&
 228         git init --bare git2 &&
 229         cp "$1".pack "$1".idx git2/objects/pack &&
 230         (
 231                 cd git2 &&
 232                 git diff-tree --root -p $commit &&
 233                 while read object
 234                 do
 235                         t=$(git cat-file -t $object) &&
 236                         git cat-file $t $object || exit 1
 237                 done
 238         ) <obj-list >current &&
 239         cmp expect current
 240 }
 241
 242 test_expect_success 'use packed objects' '
 243         check_use_objects test-1-${packname_1}
 244 '
 245
 246 test_expect_success 'use packed deltified (REF_DELTA) objects' '
 247         check_use_objects test-2-${packname_2}
 248 '
 249
 250 test_expect_success 'use packed deltified (OFS_DELTA) objects' '
 251         check_use_objects test-3-${packname_3}
 252 '
 253
 254 test_expect_success 'survive missing objects/pack directory' '
 255         (
 256                 rm -fr missing-pack &&
 257                 mkdir missing-pack &&
 258                 cd missing-pack &&
 259                 git init &&
 260                 GOP=.git/objects/pack &&
 261                 rm -fr $GOP &&
 262                 git index-pack --stdin --keep=test <../test-3-${packname_3}.pack &&
 263                 test -f $GOP/pack-${packname_3}.pack &&
 264                 cmp $GOP/pack-${packname_3}.pack ../test-3-${packname_3}.pack &&
 265                 test -f $GOP/pack-${packname_3}.idx &&
 266                 cmp $GOP/pack-${packname_3}.idx ../test-3-${packname_3}.idx &&
 267                 test -f $GOP/pack-${packname_3}.keep
 268         )
 269 '
 270
 271 test_expect_success 'verify pack' '
 272         git verify-pack test-1-${packname_1}.idx \
 273                 test-2-${packname_2}.idx \
 274                 test-3-${packname_3}.idx
 275 '
 276
 277 test_expect_success 'verify pack -v' '
 278         git verify-pack -v test-1-${packname_1}.idx \
 279                 test-2-${packname_2}.idx \
 280                 test-3-${packname_3}.idx
 281 '
 282
 283 test_expect_success 'verify-pack catches mismatched .idx and .pack files' '
 284         cat test-1-${packname_1}.idx >test-3.idx &&
 285         cat test-2-${packname_2}.pack >test-3.pack &&
 286         if git verify-pack test-3.idx
 287         then false
 288         else :;
 289         fi
 290 '
 291
 292 test_expect_success 'verify-pack catches a corrupted pack signature' '
 293         cat test-1-${packname_1}.pack >test-3.pack &&
 294         echo | dd of=test-3.pack count=1 bs=1 conv=notrunc seek=2 &&
 295         if git verify-pack test-3.idx
 296         then false
 297         else :;
 298         fi
 299 '
 300
 301 test_expect_success 'verify-pack catches a corrupted pack version' '
 302         cat test-1-${packname_1}.pack >test-3.pack &&
 303         echo | dd of=test-3.pack count=1 bs=1 conv=notrunc seek=7 &&
 304         if git verify-pack test-3.idx
 305         then false
 306         else :;
 307         fi
 308 '
 309
 310 test_expect_success 'verify-pack catches a corrupted type/size of the 1st packed object data' '
 311         cat test-1-${packname_1}.pack >test-3.pack &&
 312         echo | dd of=test-3.pack count=1 bs=1 conv=notrunc seek=12 &&
 313         if git verify-pack test-3.idx
 314         then false
 315         else :;
 316         fi
 317 '
 318
 319 test_expect_success 'verify-pack catches a corrupted sum of the index file itself' '
 320         l=$(wc -c <test-3.idx) &&
 321         l=$(expr $l - 20) &&
 322         cat test-1-${packname_1}.pack >test-3.pack &&
 323         printf "%20s" "" | dd of=test-3.idx count=20 bs=1 conv=notrunc seek=$l &&
 324         if git verify-pack test-3.pack
 325         then false
 326         else :;
 327         fi
 328 '
 329
 330 test_expect_success 'build pack index for an existing pack' '
 331         cat test-1-${packname_1}.pack >test-3.pack &&
 332         git index-pack -o tmp.idx test-3.pack &&
 333         cmp tmp.idx test-1-${packname_1}.idx &&
 334
 335         git index-pack --promisor=message test-3.pack &&
 336         cmp test-3.idx test-1-${packname_1}.idx &&
 337         echo message >expect &&
 338         test_cmp expect test-3.promisor &&
 339
 340         cat test-2-${packname_2}.pack >test-3.pack &&
 341         git index-pack -o tmp.idx test-2-${packname_2}.pack &&
 342         cmp tmp.idx test-2-${packname_2}.idx &&
 343
 344         git index-pack test-3.pack &&
 345         cmp test-3.idx test-2-${packname_2}.idx &&
 346
 347         cat test-3-${packname_3}.pack >test-3.pack &&
 348         git index-pack -o tmp.idx test-3-${packname_3}.pack &&
 349         cmp tmp.idx test-3-${packname_3}.idx &&
 350
 351         git index-pack test-3.pack &&
 352         cmp test-3.idx test-3-${packname_3}.idx &&
 353
 354         cat test-1-${packname_1}.pack >test-4.pack &&
 355         rm -f test-4.keep &&
 356         git index-pack --keep=why test-4.pack &&
 357         cmp test-1-${packname_1}.idx test-4.idx &&
 358         test -f test-4.keep &&
 359
 360         :
 361 '
 362
 363 test_expect_success 'unpacking with --strict' '
 364
 365         for j in a b c d e f g
 366         do
 367                 for i in 0 1 2 3 4 5 6 7 8 9
 368                 do
 369                         o=$(echo $j$i | git hash-object -w --stdin) &&
 370                         echo "100644 $o 0 $j$i" || return 1
 371                 done
 372         done >LIST &&
 373         rm -f .git/index &&
 374         git update-index --index-info <LIST &&
 375         LIST=$(git write-tree) &&
 376         rm -f .git/index &&
 377         head -n 10 LIST | git update-index --index-info &&
 378         LI=$(git write-tree) &&
 379         rm -f .git/index &&
 380         tail -n 10 LIST | git update-index --index-info &&
 381         ST=$(git write-tree) &&
 382         git rev-list --objects "$LIST" "$LI" "$ST" >actual &&
 383         PACK5=$( git pack-objects test-5 <actual ) &&
 384         PACK6=$( test_write_lines "$LIST" "$LI" "$ST" | git pack-objects test-6 ) &&
 385         test_create_repo test-5 &&
 386         (
 387                 cd test-5 &&
 388                 git unpack-objects --strict <../test-5-$PACK5.pack &&
 389                 git ls-tree -r $LIST &&
 390                 git ls-tree -r $LI &&
 391                 git ls-tree -r $ST
 392         ) &&
 393         test_create_repo test-6 &&
 394         (
 395                 # tree-only into empty repo -- many unreachables
 396                 cd test-6 &&
 397                 test_must_fail git unpack-objects --strict <../test-6-$PACK6.pack
 398         ) &&
 399         (
 400                 # already populated -- no unreachables
 401                 cd test-5 &&
 402                 git unpack-objects --strict <../test-6-$PACK6.pack
 403         )
 404 '
 405
 406 test_expect_success 'index-pack with --strict' '
 407
 408         for j in a b c d e f g
 409         do
 410                 for i in 0 1 2 3 4 5 6 7 8 9
 411                 do
 412                         o=$(echo $j$i | git hash-object -w --stdin) &&
 413                         echo "100644 $o 0 $j$i" || return 1
 414                 done
 415         done >LIST &&
 416         rm -f .git/index &&
 417         git update-index --index-info <LIST &&
 418         LIST=$(git write-tree) &&
 419         rm -f .git/index &&
 420         head -n 10 LIST | git update-index --index-info &&
 421         LI=$(git write-tree) &&
 422         rm -f .git/index &&
 423         tail -n 10 LIST | git update-index --index-info &&
 424         ST=$(git write-tree) &&
 425         git rev-list --objects "$LIST" "$LI" "$ST" >actual &&
 426         PACK5=$( git pack-objects test-5 <actual ) &&
 427         PACK6=$( test_write_lines "$LIST" "$LI" "$ST" | git pack-objects test-6 ) &&
 428         test_create_repo test-7 &&
 429         (
 430                 cd test-7 &&
 431                 git index-pack --strict --stdin <../test-5-$PACK5.pack &&
 432                 git ls-tree -r $LIST &&
 433                 git ls-tree -r $LI &&
 434                 git ls-tree -r $ST
 435         ) &&
 436         test_create_repo test-8 &&
 437         (
 438                 # tree-only into empty repo -- many unreachables
 439                 cd test-8 &&
 440                 test_must_fail git index-pack --strict --stdin <../test-6-$PACK6.pack
 441         ) &&
 442         (
 443                 # already populated -- no unreachables
 444                 cd test-7 &&
 445                 git index-pack --strict --stdin <../test-6-$PACK6.pack
 446         )
 447 '
 448
 449 test_expect_success 'setup for --strict and --fsck-objects downgrading fsck msgs' '
 450         git init strict &&
 451         (
 452                 cd strict &&
 453                 test_commit first hello &&
 454                 cat >commit <<-EOF &&
 455                 tree $(git rev-parse HEAD^{tree})
 456                 parent $(git rev-parse HEAD)
 457                 author A U Thor
 458                 committer A U Thor
 459
 460                 commit: this is a commit with bad emails
 461
 462                 EOF
 463                 git hash-object --literally -t commit -w --stdin <commit >commit_list &&
 464                 git pack-objects test <commit_list >pack-name
 465         )
 466 '
 467
 468 test_with_bad_commit () {
 469         must_fail_arg="$1" &&
 470         must_pass_arg="$2" &&
 471         (
 472                 cd strict &&
 473                 test_must_fail git index-pack "$must_fail_arg" "test-$(cat pack-name).pack" &&
 474                 git index-pack "$must_pass_arg" "test-$(cat pack-name).pack"
 475         )
 476 }
 477
 478 test_expect_success 'index-pack with --strict downgrading fsck msgs' '
 479         test_with_bad_commit --strict --strict="missingEmail=ignore"
 480 '
 481
 482 test_expect_success 'index-pack with --fsck-objects downgrading fsck msgs' '
 483         test_with_bad_commit --fsck-objects --fsck-objects="missingEmail=ignore"
 484 '
 485
 486 test_expect_success 'cleanup for --strict and --fsck-objects downgrading fsck msgs' '
 487         rm -rf strict
 488 '
 489
 490 test_expect_success 'honor pack.packSizeLimit' '
 491         git config pack.packSizeLimit 3m &&
 492         packname_10=$(git pack-objects test-10 <obj-list) &&
 493         test 2 = $(ls test-10-*.pack | wc -l)
 494 '
 495
 496 test_expect_success 'verify resulting packs' '
 497         git verify-pack test-10-*.pack
 498 '
 499
 500 test_expect_success 'tolerate packsizelimit smaller than biggest object' '
 501         git config pack.packSizeLimit 1 &&
 502         packname_11=$(git pack-objects test-11 <obj-list) &&
 503         test 5 = $(ls test-11-*.pack | wc -l)
 504 '
 505
 506 test_expect_success 'verify resulting packs' '
 507         git verify-pack test-11-*.pack
 508 '
 509
 510 test_expect_success 'set up pack for non-repo tests' '
 511         # make sure we have a pack with no matching index file
 512         cp test-1-*.pack foo.pack
 513 '
 514
 515 test_expect_success 'index-pack --stdin complains of non-repo' '
 516         nongit test_must_fail git index-pack --object-format=$(test_oid algo) --stdin <foo.pack &&
 517         test_path_is_missing non-repo/.git
 518 '
 519
 520 test_expect_success 'index-pack <pack> works in non-repo' '
 521         nongit git index-pack --object-format=$(test_oid algo) ../foo.pack &&
 522         test_path_is_file foo.idx
 523 '
 524
 525 test_expect_success 'index-pack --strict <pack> works in non-repo' '
 526         rm -f foo.idx &&
 527         nongit git index-pack --strict --object-format=$(test_oid algo) ../foo.pack &&
 528         test_path_is_file foo.idx
 529 '
 530
 531 test_expect_success !PTHREADS,!FAIL_PREREQS \
 532         'index-pack --threads=N or pack.threads=N warns when no pthreads' '
 533         test_must_fail git index-pack --threads=2 2>err &&
 534         grep ^warning: err >warnings &&
 535         test_line_count = 1 warnings &&
 536         grep -F "no threads support, ignoring --threads=2" err &&
 537
 538         test_must_fail git -c pack.threads=2 index-pack 2>err &&
 539         grep ^warning: err >warnings &&
 540         test_line_count = 1 warnings &&
 541         grep -F "no threads support, ignoring pack.threads" err &&
 542
 543         test_must_fail git -c pack.threads=2 index-pack --threads=4 2>err &&
 544         grep ^warning: err >warnings &&
 545         test_line_count = 2 warnings &&
 546         grep -F "no threads support, ignoring --threads=4" err &&
 547         grep -F "no threads support, ignoring pack.threads" err
 548 '
 549
 550 test_expect_success !PTHREADS,!FAIL_PREREQS \
 551         'pack-objects --threads=N or pack.threads=N warns when no pthreads' '
 552         git pack-objects --threads=2 --stdout --all </dev/null >/dev/null 2>err &&
 553         grep ^warning: err >warnings &&
 554         test_line_count = 1 warnings &&
 555         grep -F "no threads support, ignoring --threads" err &&
 556
 557         git -c pack.threads=2 pack-objects --stdout --all </dev/null >/dev/null 2>err &&
 558         grep ^warning: err >warnings &&
 559         test_line_count = 1 warnings &&
 560         grep -F "no threads support, ignoring pack.threads" err &&
 561
 562         git -c pack.threads=2 pack-objects --threads=4 --stdout --all </dev/null >/dev/null 2>err &&
 563         grep ^warning: err >warnings &&
 564         test_line_count = 2 warnings &&
 565         grep -F "no threads support, ignoring --threads" err &&
 566         grep -F "no threads support, ignoring pack.threads" err
 567 '
 568
 569 test_expect_success 'pack-objects in too-many-packs mode' '
 570         GIT_TEST_FULL_IN_PACK_ARRAY=1 git repack -ad &&
 571         git fsck
 572 '
 573
 574 test_expect_success 'setup: fake a SHA1 hash collision' '
 575         git init corrupt &&
 576         (
 577                 cd corrupt &&
 578                 long_a=$(git hash-object -w ../a | sed -e "s!^..!&/!") &&
 579                 long_b=$(git hash-object -w ../b | sed -e "s!^..!&/!") &&
 580                 test -f .git/objects/$long_b &&
 581                 cp -f   .git/objects/$long_a \
 582                         .git/objects/$long_b
 583         )
 584 '
 585
 586 test_expect_success 'make sure index-pack detects the SHA1 collision' '
 587         (
 588                 cd corrupt &&
 589                 test_must_fail git index-pack -o ../bad.idx ../test-3.pack 2>msg &&
 590                 test_grep "SHA1 COLLISION FOUND" msg
 591         )
 592 '
 593
 594 test_expect_success 'make sure index-pack detects the SHA1 collision (large blobs)' '
 595         (
 596                 cd corrupt &&
 597                 test_must_fail git -c core.bigfilethreshold=1 index-pack -o ../bad.idx ../test-3.pack 2>msg &&
 598                 test_grep "SHA1 COLLISION FOUND" msg
 599         )
 600 '
 601
 602 test_expect_success 'prefetch objects' '
 603         rm -rf server client &&
 604
 605         git init server &&
 606         test_config -C server uploadpack.allowanysha1inwant 1 &&
 607         test_config -C server uploadpack.allowfilter 1 &&
 608         test_config -C server protocol.version 2 &&
 609
 610         echo one >server/one &&
 611         git -C server add one &&
 612         git -C server commit -m one &&
 613         git -C server branch one_branch &&
 614
 615         echo two_a >server/two_a &&
 616         echo two_b >server/two_b &&
 617         git -C server add two_a two_b &&
 618         git -C server commit -m two &&
 619
 620         echo three >server/three &&
 621         git -C server add three &&
 622         git -C server commit -m three &&
 623         git -C server branch three_branch &&
 624
 625         # Clone, fetch "two" with blobs excluded, and re-push it. This requires
 626         # the client to have the blobs of "two" - verify that these are
 627         # prefetched in one batch.
 628         git clone --filter=blob:none --single-branch -b one_branch \
 629                 "file://$(pwd)/server" client &&
 630         test_config -C client protocol.version 2 &&
 631         TWO=$(git -C server rev-parse three_branch^) &&
 632         git -C client fetch --filter=blob:none origin "$TWO" &&
 633         GIT_TRACE_PACKET=$(pwd)/trace git -C client push origin "$TWO":refs/heads/two_branch &&
 634         grep "fetch> done" trace >donelines &&
 635         test_line_count = 1 donelines
 636 '
 637
 638 for hash in sha1 sha256
 639 do
 640         test_expect_success "verify-pack with $hash packfile" '
 641                 test_when_finished "rm -rf repo" &&
 642                 git init --object-format=$hash repo &&
 643                 test_commit -C repo initial &&
 644                 git -C repo repack -ad &&
 645                 git -C repo verify-pack "$(pwd)"/repo/.git/objects/pack/*.idx &&
 646                 if test $hash = sha1
 647                 then
 648                         nongit git verify-pack "$(pwd)"/repo/.git/objects/pack/*.idx
 649                 else
 650                         # We have no way to identify the hash used by packfiles
 651                         # or indices, so we always fall back to SHA1.
 652                         nongit test_must_fail git verify-pack "$(pwd)"/repo/.git/objects/pack/*.idx &&
 653                         # But with an explicit object format we should succeed.
 654                         nongit git verify-pack --object-format=$hash "$(pwd)"/repo/.git/objects/pack/*.idx
 655                 fi
 656         '
 657
 658         test_expect_success "index-pack outside of a $hash repository" '
 659                 test_when_finished "rm -rf repo" &&
 660                 git init --object-format=$hash repo &&
 661                 test_commit -C repo initial &&
 662                 git -C repo repack -ad &&
 663                 git -C repo index-pack --verify "$(pwd)"/repo/.git/objects/pack/*.pack &&
 664                 if test $hash = sha1
 665                 then
 666                         nongit git index-pack --verify "$(pwd)"/repo/.git/objects/pack/*.pack
 667                 else
 668                         # We have no way to identify the hash used by packfiles
 669                         # or indices, so we always fall back to SHA1.
 670                         nongit test_must_fail git index-pack --verify "$(pwd)"/repo/.git/objects/pack/*.pack 2>err &&
 671                         # But with an explicit object format we should succeed.
 672                         nongit git index-pack --object-format=$hash --verify "$(pwd)"/repo/.git/objects/pack/*.pack
 673                 fi
 674         '
 675 done
 676
 677 test_done