t/t5319-multi-pack-index.sh

   1 #!/bin/sh
   2
   3 test_description='multi-pack-indexes'
   4
   5 TEST_PASSES_SANITIZE_LEAK=true
   6 . ./test-lib.sh
   7 . "$TEST_DIRECTORY"/lib-chunk.sh
   8 . "$TEST_DIRECTORY"/lib-midx.sh
   9
  10 GIT_TEST_MULTI_PACK_INDEX=0
  11 GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP=0
  12 GIT_TEST_MULTI_PACK_INDEX_WRITE_INCREMENTAL=0
  13 objdir=.git/objects
  14
  15 HASH_LEN=$(test_oid rawsz)
  16
  17 midx_read_expect () {
  18         NUM_PACKS=$1
  19         NUM_OBJECTS=$2
  20         NUM_CHUNKS=$3
  21         OBJECT_DIR=$4
  22         EXTRA_CHUNKS="$5"
  23         {
  24                 cat <<-EOF &&
  25                 header: 4d494458 1 $HASH_LEN $NUM_CHUNKS $NUM_PACKS
  26                 chunks: pack-names oid-fanout oid-lookup object-offsets$EXTRA_CHUNKS
  27                 num_objects: $NUM_OBJECTS
  28                 packs:
  29                 EOF
  30                 if test $NUM_PACKS -ge 1
  31                 then
  32                         ls $OBJECT_DIR/pack/ | grep idx | sort
  33                 fi &&
  34                 printf "object-dir: $OBJECT_DIR\n"
  35         } >expect &&
  36         test-tool read-midx $OBJECT_DIR >actual &&
  37         test_cmp expect actual
  38 }
  39
  40 test_expect_success 'setup' '
  41         test_oid_cache <<-EOF
  42         idxoff sha1:2999
  43         idxoff sha256:3739
  44
  45         packnameoff sha1:652
  46         packnameoff sha256:940
  47
  48         fanoutoff sha1:1
  49         fanoutoff sha256:3
  50         EOF
  51 '
  52
  53 test_expect_success "don't write midx with no packs" '
  54         test_must_fail git multi-pack-index --object-dir=. write &&
  55         test_path_is_missing pack/multi-pack-index
  56 '
  57
  58 test_expect_success SHA1 'warn if a midx contains no oid' '
  59         cp "$TEST_DIRECTORY"/t5319/no-objects.midx $objdir/pack/multi-pack-index &&
  60         test_must_fail git multi-pack-index verify &&
  61         rm $objdir/pack/multi-pack-index
  62 '
  63
  64 generate_objects () {
  65         i=$1
  66         iii=$(printf '%03i' $i)
  67         {
  68                 test-tool genrandom "bar" 200 &&
  69                 test-tool genrandom "baz $iii" 50
  70         } >wide_delta_$iii &&
  71         {
  72                 test-tool genrandom "foo"$i 100 &&
  73                 test-tool genrandom "foo"$(( $i + 1 )) 100 &&
  74                 test-tool genrandom "foo"$(( $i + 2 )) 100
  75         } >deep_delta_$iii &&
  76         {
  77                 echo $iii &&
  78                 test-tool genrandom "$iii" 8192
  79         } >file_$iii &&
  80         git update-index --add file_$iii deep_delta_$iii wide_delta_$iii
  81 }
  82
  83 commit_and_list_objects () {
  84         {
  85                 echo 101 &&
  86                 test-tool genrandom 100 8192;
  87         } >file_101 &&
  88         git update-index --add file_101 &&
  89         tree=$(git write-tree) &&
  90         commit=$(git commit-tree $tree -p HEAD</dev/null) &&
  91         {
  92                 echo $tree &&
  93                 git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\)        .*/\\1/"
  94         } >obj-list &&
  95         git reset --hard $commit
  96 }
  97
  98 test_expect_success 'create objects' '
  99         test_commit initial &&
 100         for i in $(test_seq 1 5)
 101         do
 102                 generate_objects $i || return 1
 103         done &&
 104         commit_and_list_objects
 105 '
 106
 107 test_expect_success 'write midx with one v1 pack' '
 108         pack=$(git pack-objects --index-version=1 $objdir/pack/test <obj-list) &&
 109         test_when_finished rm $objdir/pack/test-$pack.pack \
 110                 $objdir/pack/test-$pack.idx $objdir/pack/multi-pack-index &&
 111         git multi-pack-index --object-dir=$objdir write &&
 112         midx_read_expect 1 18 4 $objdir
 113 '
 114
 115 test_expect_success 'write midx with one v2 pack' '
 116         git pack-objects --index-version=2,0x40 $objdir/pack/test <obj-list &&
 117         git multi-pack-index --object-dir=$objdir write &&
 118         midx_read_expect 1 18 4 $objdir
 119 '
 120
 121 compare_results_with_midx "one v2 pack"
 122
 123 test_expect_success 'corrupt idx reports errors' '
 124         idx=$(test-tool read-midx $objdir | grep "\.idx\$") &&
 125         mv $objdir/pack/$idx backup-$idx &&
 126         test_when_finished "mv backup-\$idx \$objdir/pack/\$idx" &&
 127
 128         # This is the minimum size for a sha-1 based .idx; this lets
 129         # us pass perfunctory tests, but anything that actually opens and reads
 130         # the idx file will complain.
 131         test_copy_bytes 1064 <backup-$idx >$objdir/pack/$idx &&
 132
 133         git -c core.multiPackIndex=true rev-list --objects --all 2>err &&
 134         grep "index unavailable" err
 135 '
 136
 137 test_expect_success 'add more objects' '
 138         for i in $(test_seq 6 10)
 139         do
 140                 generate_objects $i || return 1
 141         done &&
 142         commit_and_list_objects
 143 '
 144
 145 test_expect_success 'write midx with two packs' '
 146         git pack-objects --index-version=1 $objdir/pack/test-2 <obj-list &&
 147         git multi-pack-index --object-dir=$objdir write &&
 148         midx_read_expect 2 34 4 $objdir
 149 '
 150
 151 compare_results_with_midx "two packs"
 152
 153 test_expect_success 'write midx with --stdin-packs' '
 154         rm -fr $objdir/pack/multi-pack-index &&
 155
 156         idx="$(find $objdir/pack -name "test-2-*.idx")" &&
 157         basename "$idx" >in &&
 158
 159         git multi-pack-index write --stdin-packs <in &&
 160
 161         test-tool read-midx $objdir | grep "\.idx$" >packs &&
 162
 163         test_cmp packs in
 164 '
 165
 166 compare_results_with_midx "mixed mode (one pack + extra)"
 167
 168 test_expect_success 'write with no objects and preferred pack' '
 169         test_when_finished "rm -rf empty" &&
 170         git init empty &&
 171         test_must_fail git -C empty multi-pack-index write \
 172                 --stdin-packs --preferred-pack=does-not-exist </dev/null 2>err &&
 173         cat >expect <<-EOF &&
 174         warning: unknown preferred pack: ${SQ}does-not-exist${SQ}
 175         error: no pack files to index.
 176         EOF
 177         test_cmp expect err
 178 '
 179
 180 test_expect_success 'write progress off for redirected stderr' '
 181         git multi-pack-index --object-dir=$objdir write 2>err &&
 182         test_line_count = 0 err
 183 '
 184
 185 test_expect_success 'write force progress on for stderr' '
 186         GIT_PROGRESS_DELAY=0 git multi-pack-index --object-dir=$objdir write --progress 2>err &&
 187         test_file_not_empty err
 188 '
 189
 190 test_expect_success 'write with the --no-progress option' '
 191         GIT_PROGRESS_DELAY=0 git multi-pack-index --object-dir=$objdir write --no-progress 2>err &&
 192         test_line_count = 0 err
 193 '
 194
 195 test_expect_success 'add more packs' '
 196         for j in $(test_seq 11 20)
 197         do
 198                 generate_objects $j &&
 199                 commit_and_list_objects &&
 200                 git pack-objects --index-version=2 $objdir/pack/test-pack <obj-list || return 1
 201         done
 202 '
 203
 204 compare_results_with_midx "mixed mode (two packs + extra)"
 205
 206 test_expect_success 'write midx with twelve packs' '
 207         git multi-pack-index --object-dir=$objdir write &&
 208         midx_read_expect 12 74 4 $objdir
 209 '
 210
 211 compare_results_with_midx "twelve packs"
 212
 213 test_expect_success 'multi-pack-index *.rev cleanup with --object-dir' '
 214         git init repo &&
 215         git clone -s repo alternate &&
 216
 217         test_when_finished "rm -rf repo alternate" &&
 218
 219         (
 220                 cd repo &&
 221                 test_commit base &&
 222                 git repack -d
 223         ) &&
 224
 225         ours="alternate/.git/objects/pack/multi-pack-index-123.rev" &&
 226         theirs="repo/.git/objects/pack/multi-pack-index-abc.rev" &&
 227         touch "$ours" "$theirs" &&
 228
 229         (
 230                 cd alternate &&
 231                 git multi-pack-index --object-dir ../repo/.git/objects write
 232         ) &&
 233
 234         # writing a midx in "repo" should not remove the .rev file in the
 235         # alternate
 236         test_path_is_file repo/.git/objects/pack/multi-pack-index &&
 237         test_path_is_file $ours &&
 238         test_path_is_missing $theirs
 239 '
 240
 241 test_expect_success 'warn on improper hash version' '
 242         git init --object-format=sha1 sha1 &&
 243         (
 244                 cd sha1 &&
 245                 git config core.multiPackIndex true &&
 246                 test_commit 1 &&
 247                 git repack -a &&
 248                 git multi-pack-index write &&
 249                 mv .git/objects/pack/multi-pack-index ../mpi-sha1
 250         ) &&
 251         git init --object-format=sha256 sha256 &&
 252         (
 253                 cd sha256 &&
 254                 git config core.multiPackIndex true &&
 255                 test_commit 1 &&
 256                 git repack -a &&
 257                 git multi-pack-index write &&
 258                 mv .git/objects/pack/multi-pack-index ../mpi-sha256
 259         ) &&
 260         (
 261                 cd sha1 &&
 262                 mv ../mpi-sha256 .git/objects/pack/multi-pack-index &&
 263                 git log -1 2>err &&
 264                 test_grep "multi-pack-index hash version 2 does not match version 1" err
 265         ) &&
 266         (
 267                 cd sha256 &&
 268                 mv ../mpi-sha1 .git/objects/pack/multi-pack-index &&
 269                 git log -1 2>err &&
 270                 test_grep "multi-pack-index hash version 1 does not match version 2" err
 271         )
 272 '
 273
 274 test_expect_success 'midx picks objects from preferred pack' '
 275         test_when_finished rm -rf preferred.git &&
 276         git init --bare preferred.git &&
 277         (
 278                 cd preferred.git &&
 279
 280                 a=$(echo "a" | git hash-object -w --stdin) &&
 281                 b=$(echo "b" | git hash-object -w --stdin) &&
 282                 c=$(echo "c" | git hash-object -w --stdin) &&
 283
 284                 # Set up two packs, duplicating the object "B" at different
 285                 # offsets.
 286                 #
 287                 # Note that the "BC" pack (the one we choose as preferred) sorts
 288                 # lexically after the "AB" pack, meaning that omitting the
 289                 # --preferred-pack argument would cause this test to fail (since
 290                 # the MIDX code would select the copy of "b" in the "AB" pack).
 291                 git pack-objects objects/pack/test-AB <<-EOF &&
 292                 $a
 293                 $b
 294                 EOF
 295                 bc=$(git pack-objects objects/pack/test-BC <<-EOF
 296                 $b
 297                 $c
 298                 EOF
 299                 ) &&
 300
 301                 git multi-pack-index --object-dir=objects \
 302                         write --preferred-pack=test-BC-$bc.idx 2>err &&
 303                 test_must_be_empty err &&
 304
 305                 test-tool read-midx --show-objects objects >out &&
 306
 307                 ofs=$(git show-index <objects/pack/test-BC-$bc.idx | grep $b |
 308                         cut -d" " -f1) &&
 309                 printf "%s %s\tobjects/pack/test-BC-%s.pack\n" \
 310                         "$b" "$ofs" "$bc" >expect &&
 311                 grep ^$b out >actual &&
 312
 313                 test_cmp expect actual
 314         )
 315 '
 316
 317 test_expect_success 'preferred packs must be non-empty' '
 318         test_when_finished rm -rf preferred.git &&
 319         git init preferred.git &&
 320         (
 321                 cd preferred.git &&
 322
 323                 test_commit base &&
 324                 git repack -ad &&
 325
 326                 empty="$(git pack-objects $objdir/pack/pack </dev/null)" &&
 327
 328                 test_must_fail git multi-pack-index write \
 329                         --preferred-pack=pack-$empty.pack 2>err &&
 330                 grep "with no objects" err
 331         )
 332 '
 333
 334 test_expect_success 'preferred pack from existing MIDX without bitmaps' '
 335         git init preferred-without-bitmaps &&
 336         (
 337                 cd preferred-without-bitmaps &&
 338
 339                 test_commit one &&
 340                 pack="$(git pack-objects --all $objdir/pack/pack </dev/null)" &&
 341
 342                 git multi-pack-index write &&
 343
 344                 # make another pack so that the subsequent MIDX write
 345                 # has something to do
 346                 test_commit two &&
 347                 git repack -d &&
 348
 349                 # write a new MIDX without bitmaps reusing the singular
 350                 # pack from the existing MIDX as the preferred pack in
 351                 # the new MIDX
 352                 git multi-pack-index write --preferred-pack=pack-$pack.pack
 353         )
 354
 355 '
 356
 357 test_expect_success 'verify multi-pack-index success' '
 358         git multi-pack-index verify --object-dir=$objdir
 359 '
 360
 361 test_expect_success 'verify progress off for redirected stderr' '
 362         git multi-pack-index verify --object-dir=$objdir 2>err &&
 363         test_line_count = 0 err
 364 '
 365
 366 test_expect_success 'verify force progress on for stderr' '
 367         git multi-pack-index verify --object-dir=$objdir --progress 2>err &&
 368         test_file_not_empty err
 369 '
 370
 371 test_expect_success 'verify with the --no-progress option' '
 372         git multi-pack-index verify --object-dir=$objdir --no-progress 2>err &&
 373         test_line_count = 0 err
 374 '
 375
 376 # usage: corrupt_midx_and_verify <pos> <data> <objdir> <string>
 377 corrupt_midx_and_verify() {
 378         POS=$1 &&
 379         DATA="${2:-\0}" &&
 380         OBJDIR=$3 &&
 381         GREPSTR="$4" &&
 382         COMMAND="$5" &&
 383         if test -z "$COMMAND"
 384         then
 385                 COMMAND="git multi-pack-index verify --object-dir=$OBJDIR"
 386         fi &&
 387         FILE=$OBJDIR/pack/multi-pack-index &&
 388         chmod a+w $FILE &&
 389         test_when_finished mv midx-backup $FILE &&
 390         cp $FILE midx-backup &&
 391         printf "$DATA" | dd of="$FILE" bs=1 seek="$POS" conv=notrunc &&
 392         test_must_fail $COMMAND 2>test_err &&
 393         grep -v "^+" test_err >err &&
 394         test_grep "$GREPSTR" err
 395 }
 396
 397 test_expect_success 'verify bad signature' '
 398         corrupt_midx_and_verify 0 "\00" $objdir \
 399                 "multi-pack-index signature"
 400 '
 401
 402 NUM_OBJECTS=74
 403 MIDX_BYTE_VERSION=4
 404 MIDX_BYTE_OID_VERSION=5
 405 MIDX_BYTE_CHUNK_COUNT=6
 406 MIDX_HEADER_SIZE=12
 407 MIDX_BYTE_CHUNK_ID=$MIDX_HEADER_SIZE
 408 MIDX_BYTE_CHUNK_OFFSET=$(($MIDX_HEADER_SIZE + 4))
 409 MIDX_NUM_CHUNKS=5
 410 MIDX_CHUNK_LOOKUP_WIDTH=12
 411 MIDX_OFFSET_PACKNAMES=$(($MIDX_HEADER_SIZE + \
 412                          $MIDX_NUM_CHUNKS * $MIDX_CHUNK_LOOKUP_WIDTH))
 413 MIDX_BYTE_PACKNAME_ORDER=$(($MIDX_OFFSET_PACKNAMES + 2))
 414 MIDX_OFFSET_OID_FANOUT=$(($MIDX_OFFSET_PACKNAMES + $(test_oid packnameoff)))
 415 MIDX_OID_FANOUT_WIDTH=4
 416 MIDX_BYTE_OID_FANOUT_ORDER=$((MIDX_OFFSET_OID_FANOUT + 250 * $MIDX_OID_FANOUT_WIDTH + $(test_oid fanoutoff)))
 417 MIDX_OFFSET_OID_LOOKUP=$(($MIDX_OFFSET_OID_FANOUT + 256 * $MIDX_OID_FANOUT_WIDTH))
 418 MIDX_BYTE_OID_LOOKUP=$(($MIDX_OFFSET_OID_LOOKUP + 16 * $HASH_LEN))
 419 MIDX_OFFSET_OBJECT_OFFSETS=$(($MIDX_OFFSET_OID_LOOKUP + $NUM_OBJECTS * $HASH_LEN))
 420 MIDX_OFFSET_WIDTH=8
 421 MIDX_BYTE_PACK_INT_ID=$(($MIDX_OFFSET_OBJECT_OFFSETS + 16 * $MIDX_OFFSET_WIDTH + 2))
 422 MIDX_BYTE_OFFSET=$(($MIDX_OFFSET_OBJECT_OFFSETS + 16 * $MIDX_OFFSET_WIDTH + 6))
 423
 424 test_expect_success 'verify bad version' '
 425         corrupt_midx_and_verify $MIDX_BYTE_VERSION "\00" $objdir \
 426                 "multi-pack-index version"
 427 '
 428
 429 test_expect_success 'verify bad OID version' '
 430         corrupt_midx_and_verify $MIDX_BYTE_OID_VERSION "\03" $objdir \
 431                 "hash version"
 432 '
 433
 434 test_expect_success 'verify truncated chunk count' '
 435         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\01" $objdir \
 436                 "final chunk has non-zero id"
 437 '
 438
 439 test_expect_success 'verify extended chunk count' '
 440         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\07" $objdir \
 441                 "terminating chunk id appears earlier than expected"
 442 '
 443
 444 test_expect_success 'verify missing required chunk' '
 445         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_ID "\01" $objdir \
 446                 "required pack-name chunk missing"
 447 '
 448
 449 test_expect_success 'verify invalid chunk offset' '
 450         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_OFFSET "\01" $objdir \
 451                 "improper chunk offset(s)"
 452 '
 453
 454 test_expect_success 'verify packnames out of order' '
 455         corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "z" $objdir \
 456                 "pack names out of order"
 457 '
 458
 459 test_expect_success 'verify packnames out of order' '
 460         corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "a" $objdir \
 461                 "failed to load pack"
 462 '
 463
 464 test_expect_success 'verify oid fanout out of order' '
 465         corrupt_midx_and_verify $MIDX_BYTE_OID_FANOUT_ORDER "\01" $objdir \
 466                 "oid fanout out of order"
 467 '
 468
 469 test_expect_success 'verify oid lookup out of order' '
 470         corrupt_midx_and_verify $MIDX_BYTE_OID_LOOKUP "\00" $objdir \
 471                 "oid lookup out of order"
 472 '
 473
 474 test_expect_success 'verify incorrect pack-int-id' '
 475         corrupt_midx_and_verify $MIDX_BYTE_PACK_INT_ID "\07" $objdir \
 476                 "bad pack-int-id"
 477 '
 478
 479 test_expect_success 'verify incorrect offset' '
 480         corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\377" $objdir \
 481                 "incorrect object offset"
 482 '
 483
 484 test_expect_success 'git-fsck incorrect offset' '
 485         corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\377" $objdir \
 486                 "incorrect object offset" \
 487                 "git -c core.multiPackIndex=true fsck" &&
 488         test_unconfig core.multiPackIndex &&
 489         test_must_fail git fsck &&
 490         git -c core.multiPackIndex=false fsck
 491 '
 492
 493 test_expect_success 'git fsck shows MIDX output with --progress' '
 494         git fsck --progress 2>err &&
 495         grep "Verifying OID order in multi-pack-index" err &&
 496         grep "Verifying object offsets" err
 497 '
 498
 499 test_expect_success 'git fsck suppresses MIDX output with --no-progress' '
 500         git fsck --no-progress 2>err &&
 501         ! grep "Verifying OID order in multi-pack-index" err &&
 502         ! grep "Verifying object offsets" err
 503 '
 504
 505 test_expect_success 'corrupt MIDX is not reused' '
 506         corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\377" $objdir \
 507                 "incorrect object offset" &&
 508         git multi-pack-index write 2>err &&
 509         test_grep checksum.mismatch err &&
 510         git multi-pack-index verify
 511 '
 512
 513 test_expect_success 'verify incorrect checksum' '
 514         pos=$(($(wc -c <$objdir/pack/multi-pack-index) - 10)) &&
 515         corrupt_midx_and_verify $pos \
 516                 "\377\377\377\377\377\377\377\377\377\377" \
 517                 $objdir "incorrect checksum"
 518 '
 519
 520 test_expect_success 'repack progress off for redirected stderr' '
 521         GIT_PROGRESS_DELAY=0 git multi-pack-index --object-dir=$objdir repack 2>err &&
 522         test_line_count = 0 err
 523 '
 524
 525 test_expect_success 'repack force progress on for stderr' '
 526         GIT_PROGRESS_DELAY=0 git multi-pack-index --object-dir=$objdir repack --progress 2>err &&
 527         test_file_not_empty err
 528 '
 529
 530 test_expect_success 'repack with the --no-progress option' '
 531         GIT_PROGRESS_DELAY=0 git multi-pack-index --object-dir=$objdir repack --no-progress 2>err &&
 532         test_line_count = 0 err
 533 '
 534
 535 test_expect_success 'repack removes multi-pack-index when deleting packs' '
 536         test_path_is_file $objdir/pack/multi-pack-index &&
 537         # Set GIT_TEST_MULTI_PACK_INDEX to 0 to avoid writing a new
 538         # multi-pack-index after repacking, but set "core.multiPackIndex" to
 539         # true so that "git repack" can read the existing MIDX.
 540         GIT_TEST_MULTI_PACK_INDEX=0 git -c core.multiPackIndex repack -adf &&
 541         test_path_is_missing $objdir/pack/multi-pack-index
 542 '
 543
 544 test_expect_success 'repack preserves multi-pack-index when creating packs' '
 545         git init preserve &&
 546         test_when_finished "rm -fr preserve" &&
 547         (
 548                 cd preserve &&
 549                 packdir=.git/objects/pack &&
 550                 midx=$packdir/multi-pack-index &&
 551
 552                 test_commit 1 &&
 553                 pack1=$(git pack-objects --all $packdir/pack) &&
 554                 touch $packdir/pack-$pack1.keep &&
 555                 test_commit 2 &&
 556                 pack2=$(git pack-objects --revs $packdir/pack) &&
 557                 touch $packdir/pack-$pack2.keep &&
 558
 559                 git multi-pack-index write &&
 560                 cp $midx $midx.bak &&
 561
 562                 cat >pack-input <<-EOF &&
 563                 HEAD
 564                 ^HEAD~1
 565                 EOF
 566                 test_commit 3 &&
 567                 pack3=$(git pack-objects --revs $packdir/pack <pack-input) &&
 568                 test_commit 4 &&
 569                 pack4=$(git pack-objects --revs $packdir/pack <pack-input) &&
 570
 571                 GIT_TEST_MULTI_PACK_INDEX=0 git -c core.multiPackIndex repack -ad &&
 572                 ls -la $packdir &&
 573                 test_path_is_file $packdir/pack-$pack1.pack &&
 574                 test_path_is_file $packdir/pack-$pack2.pack &&
 575                 test_path_is_missing $packdir/pack-$pack3.pack &&
 576                 test_path_is_missing $packdir/pack-$pack4.pack &&
 577                 test_cmp_bin $midx.bak $midx
 578         )
 579 '
 580
 581 compare_results_with_midx "after repack"
 582
 583 test_expect_success 'multi-pack-index and pack-bitmap' '
 584         git -c repack.writeBitmaps=true repack -ad &&
 585         git multi-pack-index write &&
 586         git rev-list --test-bitmap HEAD
 587 '
 588
 589 test_expect_success 'multi-pack-index and alternates' '
 590         git init --bare alt.git &&
 591         echo $(pwd)/alt.git/objects >.git/objects/info/alternates &&
 592         echo content1 >file1 &&
 593         altblob=$(GIT_DIR=alt.git git hash-object -w file1) &&
 594         git cat-file blob $altblob &&
 595         git rev-list --all
 596 '
 597
 598 compare_results_with_midx "with alternate (local midx)"
 599
 600 test_expect_success 'multi-pack-index in an alternate' '
 601         mv .git/objects/pack/* alt.git/objects/pack &&
 602         test_commit add_local_objects &&
 603         git repack --local &&
 604         git multi-pack-index write &&
 605         midx_read_expect 1 3 4 $objdir &&
 606         git reset --hard HEAD~1 &&
 607         rm -f .git/objects/pack/*
 608 '
 609
 610 compare_results_with_midx "with alternate (remote midx)"
 611
 612 # usage: corrupt_data <file> <pos> [<data>]
 613 corrupt_data () {
 614         file=$1
 615         pos=$2
 616         data="${3:-\0}"
 617         printf "$data" | dd of="$file" bs=1 seek="$pos" conv=notrunc
 618 }
 619
 620 # Force 64-bit offsets by manipulating the idx file.
 621 # This makes the IDX file _incorrect_ so be careful to clean up after!
 622 test_expect_success 'force some 64-bit offsets with pack-objects' '
 623         mkdir objects64 &&
 624         mkdir objects64/pack &&
 625         for i in $(test_seq 1 11)
 626         do
 627                 generate_objects 11 || return 1
 628         done &&
 629         commit_and_list_objects &&
 630         pack64=$(git pack-objects --index-version=2,0x40 objects64/pack/test-64 <obj-list) &&
 631         idx64=objects64/pack/test-64-$pack64.idx &&
 632         chmod u+w $idx64 &&
 633         corrupt_data $idx64 $(test_oid idxoff) "\02" &&
 634         # objects64 is not a real repository, but can serve as an alternate
 635         # anyway so we can write a MIDX into it
 636         git init repo &&
 637         test_when_finished "rm -fr repo" &&
 638         (
 639                 cd repo &&
 640                 ( cd ../objects64 && pwd ) >.git/objects/info/alternates &&
 641                 midx64=$(git multi-pack-index --object-dir=../objects64 write)
 642         ) &&
 643         midx_read_expect 1 63 5 objects64 " large-offsets"
 644 '
 645
 646 test_expect_success 'verify multi-pack-index with 64-bit offsets' '
 647         git multi-pack-index verify --object-dir=objects64
 648 '
 649
 650 NUM_OBJECTS=63
 651 MIDX_OFFSET_OID_FANOUT=$((MIDX_OFFSET_PACKNAMES + 54))
 652 MIDX_OFFSET_OID_LOOKUP=$((MIDX_OFFSET_OID_FANOUT + 256 * $MIDX_OID_FANOUT_WIDTH))
 653 MIDX_OFFSET_OBJECT_OFFSETS=$(($MIDX_OFFSET_OID_LOOKUP + $NUM_OBJECTS * $HASH_LEN))
 654 MIDX_OFFSET_LARGE_OFFSETS=$(($MIDX_OFFSET_OBJECT_OFFSETS + $NUM_OBJECTS * $MIDX_OFFSET_WIDTH))
 655 MIDX_BYTE_LARGE_OFFSET=$(($MIDX_OFFSET_LARGE_OFFSETS + 3))
 656
 657 test_expect_success 'verify incorrect 64-bit offset' '
 658         corrupt_midx_and_verify $MIDX_BYTE_LARGE_OFFSET "\07" objects64 \
 659                 "incorrect object offset"
 660 '
 661
 662 test_expect_success 'setup expire tests' '
 663         mkdir dup &&
 664         (
 665                 cd dup &&
 666                 git init &&
 667                 test-tool genrandom "data" 4096 >large_file.txt &&
 668                 git update-index --add large_file.txt &&
 669                 for i in $(test_seq 1 20)
 670                 do
 671                         test_commit $i || exit 1
 672                 done &&
 673                 git branch A HEAD &&
 674                 git branch B HEAD~8 &&
 675                 git branch C HEAD~13 &&
 676                 git branch D HEAD~16 &&
 677                 git branch E HEAD~18 &&
 678                 git pack-objects --revs .git/objects/pack/pack-A <<-EOF &&
 679                 refs/heads/A
 680                 ^refs/heads/B
 681                 EOF
 682                 git pack-objects --revs .git/objects/pack/pack-B <<-EOF &&
 683                 refs/heads/B
 684                 ^refs/heads/C
 685                 EOF
 686                 git pack-objects --revs .git/objects/pack/pack-C <<-EOF &&
 687                 refs/heads/C
 688                 ^refs/heads/D
 689                 EOF
 690                 git pack-objects --revs .git/objects/pack/pack-D <<-EOF &&
 691                 refs/heads/D
 692                 ^refs/heads/E
 693                 EOF
 694                 git pack-objects --revs .git/objects/pack/pack-E <<-EOF &&
 695                 refs/heads/E
 696                 EOF
 697                 git multi-pack-index write &&
 698                 cp -r .git/objects/pack .git/objects/pack-backup
 699         )
 700 '
 701
 702 test_expect_success 'expire does not remove any packs' '
 703         (
 704                 cd dup &&
 705                 ls .git/objects/pack >expect &&
 706                 git multi-pack-index expire &&
 707                 ls .git/objects/pack >actual &&
 708                 test_cmp expect actual
 709         )
 710 '
 711
 712 test_expect_success 'expire progress off for redirected stderr' '
 713         (
 714                 cd dup &&
 715                 git multi-pack-index expire 2>err &&
 716                 test_line_count = 0 err
 717         )
 718 '
 719
 720 test_expect_success 'expire force progress on for stderr' '
 721         (
 722                 cd dup &&
 723                 GIT_PROGRESS_DELAY=0 git multi-pack-index expire --progress 2>err &&
 724                 test_file_not_empty err
 725         )
 726 '
 727
 728 test_expect_success 'expire with the --no-progress option' '
 729         (
 730                 cd dup &&
 731                 GIT_PROGRESS_DELAY=0 git multi-pack-index expire --no-progress 2>err &&
 732                 test_line_count = 0 err
 733         )
 734 '
 735
 736 test_expect_success 'expire removes unreferenced packs' '
 737         (
 738                 cd dup &&
 739                 git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
 740                 refs/heads/A
 741                 ^refs/heads/C
 742                 EOF
 743                 git multi-pack-index write &&
 744                 ls .git/objects/pack | grep -v -e pack-[AB] >expect &&
 745                 git multi-pack-index expire &&
 746                 ls .git/objects/pack >actual &&
 747                 test_cmp expect actual &&
 748                 ls .git/objects/pack/ | grep idx >expect-idx &&
 749                 test-tool read-midx .git/objects | grep idx >actual-midx &&
 750                 test_cmp expect-idx actual-midx &&
 751                 git multi-pack-index verify &&
 752                 git fsck
 753         )
 754 '
 755
 756 test_expect_success 'repack with minimum size does not alter existing packs' '
 757         (
 758                 cd dup &&
 759                 rm -rf .git/objects/pack &&
 760                 mv .git/objects/pack-backup .git/objects/pack &&
 761                 test-tool chmtime =-5 .git/objects/pack/pack-D* &&
 762                 test-tool chmtime =-4 .git/objects/pack/pack-C* &&
 763                 test-tool chmtime =-3 .git/objects/pack/pack-B* &&
 764                 test-tool chmtime =-2 .git/objects/pack/pack-A* &&
 765                 ls .git/objects/pack >expect &&
 766                 MINSIZE=$(test-tool path-utils file-size .git/objects/pack/*pack | sort -n | head -n 1) &&
 767                 git multi-pack-index repack --batch-size=$MINSIZE &&
 768                 ls .git/objects/pack >actual &&
 769                 test_cmp expect actual
 770         )
 771 '
 772
 773 test_expect_success 'repack respects repack.packKeptObjects=false' '
 774         test_when_finished rm -f dup/.git/objects/pack/*keep &&
 775         (
 776                 cd dup &&
 777                 ls .git/objects/pack/*idx >idx-list &&
 778                 test_line_count = 5 idx-list &&
 779                 ls .git/objects/pack/*.pack | sed "s/\.pack/.keep/" >keep-list &&
 780                 test_line_count = 5 keep-list &&
 781                 for keep in $(cat keep-list)
 782                 do
 783                         touch $keep || return 1
 784                 done &&
 785                 git multi-pack-index repack --batch-size=0 &&
 786                 ls .git/objects/pack/*idx >idx-list &&
 787                 test_line_count = 5 idx-list &&
 788                 test-tool read-midx .git/objects | grep idx >midx-list &&
 789                 test_line_count = 5 midx-list &&
 790                 THIRD_SMALLEST_SIZE=$(test-tool path-utils file-size .git/objects/pack/*pack | sort -n | sed -n 3p) &&
 791                 BATCH_SIZE=$((THIRD_SMALLEST_SIZE + 1)) &&
 792                 git multi-pack-index repack --batch-size=$BATCH_SIZE &&
 793                 ls .git/objects/pack/*idx >idx-list &&
 794                 test_line_count = 5 idx-list &&
 795                 test-tool read-midx .git/objects | grep idx >midx-list &&
 796                 test_line_count = 5 midx-list
 797         )
 798 '
 799
 800 test_expect_success 'repack creates a new pack' '
 801         (
 802                 cd dup &&
 803                 ls .git/objects/pack/*idx >idx-list &&
 804                 test_line_count = 5 idx-list &&
 805                 THIRD_SMALLEST_SIZE=$(test-tool path-utils file-size .git/objects/pack/*pack | sort -n | head -n 3 | tail -n 1) &&
 806                 BATCH_SIZE=$(($THIRD_SMALLEST_SIZE + 1)) &&
 807                 git multi-pack-index repack --batch-size=$BATCH_SIZE &&
 808                 ls .git/objects/pack/*idx >idx-list &&
 809                 test_line_count = 6 idx-list &&
 810                 test-tool read-midx .git/objects | grep idx >midx-list &&
 811                 test_line_count = 6 midx-list
 812         )
 813 '
 814
 815 test_expect_success 'repack (all) ignores cruft pack' '
 816         git init repo &&
 817         test_when_finished "rm -fr repo" &&
 818         (
 819                 cd repo &&
 820
 821                 test_commit base &&
 822                 test_commit --no-tag unreachable &&
 823
 824                 git reset --hard base &&
 825                 git reflog expire --all --expire=all &&
 826                 git repack --cruft -d &&
 827
 828                 git multi-pack-index write &&
 829
 830                 find $objdir/pack | sort >before &&
 831                 git multi-pack-index repack --batch-size=0 &&
 832                 find $objdir/pack | sort >after &&
 833
 834                 test_cmp before after
 835         )
 836 '
 837
 838 test_expect_success 'repack (--batch-size) ignores cruft pack' '
 839         git init repo &&
 840         test_when_finished "rm -fr repo" &&
 841         (
 842                 cd repo &&
 843
 844                 test_commit_bulk 5 &&
 845                 test_commit --no-tag unreachable &&
 846
 847                 git reset --hard HEAD^ &&
 848                 git reflog expire --all --expire=all &&
 849                 git repack --cruft -d &&
 850
 851                 test_commit four &&
 852
 853                 find $objdir/pack -type f -name "*.pack" | sort >before &&
 854                 git repack -d &&
 855                 find $objdir/pack -type f -name "*.pack" | sort >after &&
 856
 857                 pack="$(comm -13 before after)" &&
 858                 test_file_size "$pack" >sz &&
 859                 # Set --batch-size to twice the size of the pack created
 860                 # in the previous step, since this is enough to
 861                 # accommodate it and the cruft pack.
 862                 #
 863                 # This means that the MIDX machinery *could* combine the
 864                 # new and cruft packs together.
 865                 #
 866                 # We ensure that it does not below.
 867                 batch="$((($(cat sz) * 2)))" &&
 868
 869                 git multi-pack-index write &&
 870
 871                 find $objdir/pack | sort >before &&
 872                 git multi-pack-index repack --batch-size=$batch &&
 873                 find $objdir/pack | sort >after &&
 874
 875                 test_cmp before after
 876         )
 877 '
 878
 879 test_expect_success 'expire removes repacked packs' '
 880         (
 881                 cd dup &&
 882                 ls -al .git/objects/pack/*pack &&
 883                 ls -S .git/objects/pack/*pack | head -n 4 >expect &&
 884                 git multi-pack-index expire &&
 885                 ls -S .git/objects/pack/*pack >actual &&
 886                 test_cmp expect actual &&
 887                 test-tool read-midx .git/objects | grep idx >midx-list &&
 888                 test_line_count = 4 midx-list
 889         )
 890 '
 891
 892 test_expect_success 'expire works when adding new packs' '
 893         (
 894                 cd dup &&
 895                 git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
 896                 refs/heads/A
 897                 ^refs/heads/B
 898                 EOF
 899                 git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
 900                 refs/heads/B
 901                 ^refs/heads/C
 902                 EOF
 903                 git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
 904                 refs/heads/C
 905                 ^refs/heads/D
 906                 EOF
 907                 git multi-pack-index write &&
 908                 git pack-objects --revs .git/objects/pack/a-pack <<-EOF &&
 909                 refs/heads/D
 910                 ^refs/heads/E
 911                 EOF
 912                 git multi-pack-index write &&
 913                 git pack-objects --revs .git/objects/pack/z-pack <<-EOF &&
 914                 refs/heads/E
 915                 EOF
 916                 git multi-pack-index expire &&
 917                 ls .git/objects/pack/ | grep idx >expect &&
 918                 test-tool read-midx .git/objects | grep idx >actual &&
 919                 test_cmp expect actual &&
 920                 git multi-pack-index verify
 921         )
 922 '
 923
 924 test_expect_success 'expire respects .keep files' '
 925         (
 926                 cd dup &&
 927                 git pack-objects --revs .git/objects/pack/pack-all <<-EOF &&
 928                 refs/heads/A
 929                 EOF
 930                 git multi-pack-index write &&
 931                 PACKA=$(ls .git/objects/pack/a-pack*\.pack | sed s/\.pack\$//) &&
 932                 touch $PACKA.keep &&
 933                 git multi-pack-index expire &&
 934                 test_path_is_file $PACKA.idx &&
 935                 test_path_is_file $PACKA.keep &&
 936                 test_path_is_file $PACKA.pack &&
 937                 test-tool read-midx .git/objects | grep idx >midx-list &&
 938                 test_line_count = 2 midx-list
 939         )
 940 '
 941
 942 test_expect_success 'expiring unreferenced cruft pack retains pack' '
 943         git init repo &&
 944         test_when_finished "rm -fr repo" &&
 945         (
 946                 cd repo &&
 947
 948                 test_commit base &&
 949                 test_commit --no-tag unreachable &&
 950                 unreachable=$(git rev-parse HEAD) &&
 951
 952                 git reset --hard base &&
 953                 git reflog expire --all --expire=all &&
 954                 git repack --cruft -d &&
 955                 mtimes="$(ls $objdir/pack/pack-*.mtimes)" &&
 956
 957                 echo "base..$unreachable" >in &&
 958                 pack="$(git pack-objects --revs --delta-base-offset \
 959                         $objdir/pack/pack <in)" &&
 960
 961                 # Preferring the contents of "$pack" will leave the
 962                 # cruft pack unreferenced (ie., none of the objects
 963                 # contained in the cruft pack will have their MIDX copy
 964                 # selected from the cruft pack).
 965                 git multi-pack-index write --preferred-pack="pack-$pack.pack" &&
 966                 git multi-pack-index expire &&
 967
 968                 test_path_is_file "$mtimes"
 969         )
 970 '
 971
 972 test_expect_success 'repack --batch-size=0 repacks everything' '
 973         cp -r dup dup2 &&
 974         (
 975                 cd dup &&
 976                 rm .git/objects/pack/*.keep &&
 977                 ls .git/objects/pack/*idx >idx-list &&
 978                 test_line_count = 2 idx-list &&
 979                 git multi-pack-index repack --batch-size=0 &&
 980                 ls .git/objects/pack/*idx >idx-list &&
 981                 test_line_count = 3 idx-list &&
 982                 test-tool read-midx .git/objects | grep idx >midx-list &&
 983                 test_line_count = 3 midx-list &&
 984                 git multi-pack-index expire &&
 985                 ls -al .git/objects/pack/*idx >idx-list &&
 986                 test_line_count = 1 idx-list &&
 987                 git multi-pack-index repack --batch-size=0 &&
 988                 ls -al .git/objects/pack/*idx >new-idx-list &&
 989                 test_cmp idx-list new-idx-list
 990         )
 991 '
 992
 993 test_expect_success 'repack --batch-size=<large> repacks everything' '
 994         (
 995                 cd dup2 &&
 996                 rm .git/objects/pack/*.keep &&
 997                 ls .git/objects/pack/*idx >idx-list &&
 998                 test_line_count = 2 idx-list &&
 999                 git multi-pack-index repack --batch-size=2000000 &&
1000                 ls .git/objects/pack/*idx >idx-list &&
1001                 test_line_count = 3 idx-list &&
1002                 test-tool read-midx .git/objects | grep idx >midx-list &&
1003                 test_line_count = 3 midx-list &&
1004                 git multi-pack-index expire &&
1005                 ls -al .git/objects/pack/*idx >idx-list &&
1006                 test_line_count = 1 idx-list
1007         )
1008 '
1009
1010 test_expect_success 'repack/expire loop' '
1011         git init repack-expire &&
1012         test_when_finished "rm -fr repack-expire" &&
1013         (
1014                 cd repack-expire &&
1015
1016                 test_commit_bulk 5 &&
1017
1018                 # Create three overlapping pack-files
1019                 git rev-list --objects HEAD~3 >in-1 &&
1020                 git rev-list --objects HEAD~4..HEAD~2 >in-2 &&
1021                 git rev-list --objects HEAD~3..HEAD >in-3 &&
1022
1023                 # Create disconnected blobs
1024                 obj1=$(git hash-object -w in-1) &&
1025                 obj2=$(git hash-object -w in-2) &&
1026                 obj3=$(git hash-object -w in-3) &&
1027
1028                 echo $obj2 >>in-2 &&
1029                 echo $obj3 >>in-3 &&
1030
1031                 for i in $(test_seq 3)
1032                 do
1033                         git pack-objects .git/objects/pack/test-$i <in-$i \
1034                                 || return 1
1035                 done &&
1036
1037                 rm -fr .git/objects/pack/pack-* &&
1038                 git multi-pack-index write &&
1039
1040                 for i in $(test_seq 3)
1041                 do
1042                         for file in $(ls .git/objects/pack/test-$i*)
1043                         do
1044                                 test-tool chmtime =+$((3600*$i-25000)) $file || return 1
1045                         done || return 1
1046                 done &&
1047
1048                 pack1=$(ls .git/objects/pack/test-1-*.pack) &&
1049                 pack2=$(ls .git/objects/pack/test-2-*.pack) &&
1050                 pack3=$(ls .git/objects/pack/test-3-*.pack) &&
1051
1052                 # Prevent test-1 from being rewritten.
1053                 touch "${pack1%.pack}.keep" &&
1054
1055                 # This repack-expire loop should repack all non-kept packs
1056                 # into a new pack and then delete the old packs.
1057                 git multi-pack-index repack &&
1058                 git multi-pack-index expire &&
1059
1060                 test_path_is_missing $pack3 &&
1061                 test_path_is_missing $pack2
1062         )
1063 '
1064
1065 test_expect_success 'load reverse index when missing .idx, .pack' '
1066         git init repo &&
1067         test_when_finished "rm -fr repo" &&
1068         (
1069                 cd repo &&
1070
1071                 git config core.multiPackIndex true &&
1072
1073                 test_commit base &&
1074                 git repack -ad &&
1075                 git multi-pack-index write &&
1076
1077                 git rev-parse HEAD >tip &&
1078                 pack=$(ls .git/objects/pack/pack-*.pack) &&
1079                 idx=$(ls .git/objects/pack/pack-*.idx) &&
1080
1081                 mv $idx $idx.bak &&
1082                 git cat-file --batch-check="%(objectsize:disk)" <tip &&
1083
1084                 mv $idx.bak $idx &&
1085
1086                 mv $pack $pack.bak &&
1087                 git cat-file --batch-check="%(objectsize:disk)" <tip
1088         )
1089 '
1090
1091 test_expect_success 'usage shown without sub-command' '
1092         test_expect_code 129 git multi-pack-index 2>err &&
1093         ! test_grep "unrecognized subcommand" err
1094 '
1095
1096 test_expect_success 'complains when run outside of a repository' '
1097         nongit test_must_fail git multi-pack-index write 2>err &&
1098         grep "not a git repository" err
1099 '
1100
1101 test_expect_success 'repack with delta islands' '
1102         git init repo &&
1103         test_when_finished "rm -fr repo" &&
1104         (
1105                 cd repo &&
1106
1107                 test_commit first &&
1108                 git repack &&
1109                 test_commit second &&
1110                 git repack &&
1111
1112                 git multi-pack-index write &&
1113                 git -c repack.useDeltaIslands=true multi-pack-index repack
1114         )
1115 '
1116
1117 corrupt_chunk () {
1118         midx=.git/objects/pack/multi-pack-index &&
1119         test_when_finished "rm -rf $midx" &&
1120         git repack -ad --write-midx &&
1121         corrupt_chunk_file $midx "$@"
1122 }
1123
1124 test_expect_success 'reader notices too-small oid fanout chunk' '
1125         corrupt_chunk OIDF clear 00000000 &&
1126         test_must_fail git log 2>err &&
1127         cat >expect <<-\EOF &&
1128         error: multi-pack-index OID fanout is of the wrong size
1129         fatal: multi-pack-index required OID fanout chunk missing or corrupted
1130         EOF
1131         test_cmp expect err
1132 '
1133
1134 test_expect_success 'reader notices too-small oid lookup chunk' '
1135         corrupt_chunk OIDL clear 00000000 &&
1136         test_must_fail git log 2>err &&
1137         cat >expect <<-\EOF &&
1138         error: multi-pack-index OID lookup chunk is the wrong size
1139         fatal: multi-pack-index required OID lookup chunk missing or corrupted
1140         EOF
1141         test_cmp expect err
1142 '
1143
1144 test_expect_success 'reader notices too-small pack names chunk' '
1145         # There is no NUL to terminate the name here, so the
1146         # chunk is too short.
1147         corrupt_chunk PNAM clear 70656666 &&
1148         test_must_fail git log 2>err &&
1149         cat >expect <<-\EOF &&
1150         fatal: multi-pack-index pack-name chunk is too short
1151         EOF
1152         test_cmp expect err
1153 '
1154
1155 test_expect_success 'reader handles unaligned chunks' '
1156         # A 9-byte PNAM means all of the subsequent chunks
1157         # will no longer be 4-byte aligned, but it is still
1158         # a valid one-pack chunk on its own (it is "foo.pack\0").
1159         corrupt_chunk PNAM clear 666f6f2e7061636b00 &&
1160         git -c core.multipackindex=false log >expect.out &&
1161         git -c core.multipackindex=true log >out 2>err &&
1162         test_cmp expect.out out &&
1163         cat >expect.err <<-\EOF &&
1164         error: chunk id 4f494446 not 4-byte aligned
1165         EOF
1166         test_cmp expect.err err
1167 '
1168
1169 test_expect_success 'reader notices too-small object offset chunk' '
1170         corrupt_chunk OOFF clear 00000000 &&
1171         test_must_fail git log 2>err &&
1172         cat >expect <<-\EOF &&
1173         error: multi-pack-index object offset chunk is the wrong size
1174         fatal: multi-pack-index required object offsets chunk missing or corrupted
1175         EOF
1176         test_cmp expect err
1177 '
1178
1179 test_expect_success 'reader bounds-checks large offset table' '
1180         # re-use the objects64 dir here to cheaply get access to a midx
1181         # with large offsets.
1182         git init repo &&
1183         test_when_finished "rm -rf repo" &&
1184         (
1185                 cd repo &&
1186                 (cd ../objects64 && pwd) >.git/objects/info/alternates &&
1187                 git multi-pack-index --object-dir=../objects64 write &&
1188                 midx=../objects64/pack/multi-pack-index &&
1189                 corrupt_chunk_file $midx LOFF clear &&
1190                 # using only %(objectsize) is important here; see the commit
1191                 # message for more details
1192                 test_must_fail git cat-file --batch-all-objects \
1193                         --batch-check="%(objectsize)" 2>err &&
1194                 cat >expect <<-\EOF &&
1195                 fatal: multi-pack-index large offset out of bounds
1196                 EOF
1197                 test_cmp expect err
1198         )
1199 '
1200
1201 test_expect_success 'reader notices too-small revindex chunk' '
1202         # We only get a revindex with bitmaps (and likewise only
1203         # load it when they are asked for).
1204         test_config repack.writeBitmaps true &&
1205         corrupt_chunk RIDX clear 00000000 &&
1206         git -c core.multipackIndex=false rev-list \
1207                 --all --use-bitmap-index >expect.out &&
1208         git -c core.multipackIndex=true rev-list \
1209                 --all --use-bitmap-index >out 2>err &&
1210         test_cmp expect.out out &&
1211         cat >expect.err <<-\EOF &&
1212         error: multi-pack-index reverse-index chunk is the wrong size
1213         warning: multi-pack bitmap is missing required reverse index
1214         EOF
1215         test_cmp expect.err err
1216 '
1217
1218 test_expect_success 'reader notices out-of-bounds fanout' '
1219         # This is similar to the out-of-bounds fanout test in t5318. The values
1220         # in adjacent entries should be large but not identical (they
1221         # are used as hi/lo starts for a binary search, which would then abort
1222         # immediately).
1223         corrupt_chunk OIDF 0 $(printf "%02x000000" $(test_seq 0 254)) &&
1224         test_must_fail git log 2>err &&
1225         cat >expect <<-\EOF &&
1226         error: oid fanout out of order: fanout[254] = fe000000 > 5c = fanout[255]
1227         fatal: multi-pack-index required OID fanout chunk missing or corrupted
1228         EOF
1229         test_cmp expect err
1230 '
1231
1232 test_expect_success 'bitmapped packs are stored via the BTMP chunk' '
1233         test_when_finished "rm -fr repo" &&
1234         git init repo &&
1235         (
1236                 cd repo &&
1237
1238                 for i in 1 2 3 4 5
1239                 do
1240                         test_commit "$i" &&
1241                         git repack -d || return 1
1242                 done &&
1243
1244                 find $objdir/pack -type f -name "*.idx" | xargs -n 1 basename |
1245                 sort >packs &&
1246
1247                 git multi-pack-index write --stdin-packs <packs &&
1248                 test_must_fail test-tool read-midx --bitmap $objdir 2>err &&
1249                 cat >expect <<-\EOF &&
1250                 error: MIDX does not contain the BTMP chunk
1251                 EOF
1252                 test_cmp expect err &&
1253
1254                 git multi-pack-index write --stdin-packs --bitmap \
1255                         --preferred-pack="$(head -n1 <packs)" <packs  &&
1256                 test-tool read-midx --bitmap $objdir >actual &&
1257                 for i in $(test_seq $(wc -l <packs))
1258                 do
1259                         sed -ne "${i}s/\.idx$/\.pack/p" packs &&
1260                         echo "  bitmap_pos: $((($i - 1) * 3))" &&
1261                         echo "  bitmap_nr: 3" || return 1
1262                 done >expect &&
1263                 test_cmp expect actual
1264         )
1265 '
1266
1267 test_done