t/t5319-multi-pack-index.sh

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