t/t5319-multi-pack-index.sh

   1 #!/bin/sh
   2
   3 test_description='multi-pack-indexes'
   4 . ./test-lib.sh
   5
   6 GIT_TEST_MULTI_PACK_INDEX=0
   7 objdir=.git/objects
   8
   9 HASH_LEN=$(test_oid rawsz)
  10
  11 midx_read_expect () {
  12         NUM_PACKS=$1
  13         NUM_OBJECTS=$2
  14         NUM_CHUNKS=$3
  15         OBJECT_DIR=$4
  16         EXTRA_CHUNKS="$5"
  17         {
  18                 cat <<-EOF &&
  19                 header: 4d494458 1 $HASH_LEN $NUM_CHUNKS $NUM_PACKS
  20                 chunks: pack-names oid-fanout oid-lookup object-offsets$EXTRA_CHUNKS
  21                 num_objects: $NUM_OBJECTS
  22                 packs:
  23                 EOF
  24                 if test $NUM_PACKS -ge 1
  25                 then
  26                         ls $OBJECT_DIR/pack/ | grep idx | sort
  27                 fi &&
  28                 printf "object-dir: $OBJECT_DIR\n"
  29         } >expect &&
  30         test-tool read-midx $OBJECT_DIR >actual &&
  31         test_cmp expect actual
  32 }
  33
  34 test_expect_success 'setup' '
  35         test_oid_cache <<-EOF
  36         idxoff sha1:2999
  37         idxoff sha256:3739
  38
  39         packnameoff sha1:652
  40         packnameoff sha256:940
  41
  42         fanoutoff sha1:1
  43         fanoutoff sha256:3
  44         EOF
  45 '
  46
  47 test_expect_success "don't write midx with no packs" '
  48         test_must_fail git multi-pack-index --object-dir=. write &&
  49         test_path_is_missing pack/multi-pack-index
  50 '
  51
  52 test_expect_success SHA1 'warn if a midx contains no oid' '
  53         cp "$TEST_DIRECTORY"/t5319/no-objects.midx $objdir/pack/multi-pack-index &&
  54         test_must_fail git multi-pack-index verify &&
  55         rm $objdir/pack/multi-pack-index
  56 '
  57
  58 generate_objects () {
  59         i=$1
  60         iii=$(printf '%03i' $i)
  61         {
  62                 test-tool genrandom "bar" 200 &&
  63                 test-tool genrandom "baz $iii" 50
  64         } >wide_delta_$iii &&
  65         {
  66                 test-tool genrandom "foo"$i 100 &&
  67                 test-tool genrandom "foo"$(( $i + 1 )) 100 &&
  68                 test-tool genrandom "foo"$(( $i + 2 )) 100
  69         } >deep_delta_$iii &&
  70         {
  71                 echo $iii &&
  72                 test-tool genrandom "$iii" 8192
  73         } >file_$iii &&
  74         git update-index --add file_$iii deep_delta_$iii wide_delta_$iii
  75 }
  76
  77 commit_and_list_objects () {
  78         {
  79                 echo 101 &&
  80                 test-tool genrandom 100 8192;
  81         } >file_101 &&
  82         git update-index --add file_101 &&
  83         tree=$(git write-tree) &&
  84         commit=$(git commit-tree $tree -p HEAD</dev/null) &&
  85         {
  86                 echo $tree &&
  87                 git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\)        .*/\\1/"
  88         } >obj-list &&
  89         git reset --hard $commit
  90 }
  91
  92 test_expect_success 'create objects' '
  93         test_commit initial &&
  94         for i in $(test_seq 1 5)
  95         do
  96                 generate_objects $i || return 1
  97         done &&
  98         commit_and_list_objects
  99 '
 100
 101 test_expect_success 'write midx with one v1 pack' '
 102         pack=$(git pack-objects --index-version=1 $objdir/pack/test <obj-list) &&
 103         test_when_finished rm $objdir/pack/test-$pack.pack \
 104                 $objdir/pack/test-$pack.idx $objdir/pack/multi-pack-index &&
 105         git multi-pack-index --object-dir=$objdir write &&
 106         midx_read_expect 1 18 4 $objdir
 107 '
 108
 109 midx_git_two_modes () {
 110         git -c core.multiPackIndex=false $1 >expect &&
 111         git -c core.multiPackIndex=true $1 >actual &&
 112         if [ "$2" = "sorted" ]
 113         then
 114                 sort <expect >expect.sorted &&
 115                 mv expect.sorted expect &&
 116                 sort <actual >actual.sorted &&
 117                 mv actual.sorted actual
 118         fi &&
 119         test_cmp expect actual
 120 }
 121
 122 compare_results_with_midx () {
 123         MSG=$1
 124         test_expect_success "check normal git operations: $MSG" '
 125                 midx_git_two_modes "rev-list --objects --all" &&
 126                 midx_git_two_modes "log --raw" &&
 127                 midx_git_two_modes "count-objects --verbose" &&
 128                 midx_git_two_modes "cat-file --batch-all-objects --batch-check" &&
 129                 midx_git_two_modes "cat-file --batch-all-objects --batch-check --unordered" sorted
 130         '
 131 }
 132
 133 test_expect_success 'write midx with one v2 pack' '
 134         git pack-objects --index-version=2,0x40 $objdir/pack/test <obj-list &&
 135         git multi-pack-index --object-dir=$objdir write &&
 136         midx_read_expect 1 18 4 $objdir
 137 '
 138
 139 compare_results_with_midx "one v2 pack"
 140
 141 test_expect_success 'corrupt idx reports errors' '
 142         idx=$(test-tool read-midx $objdir | grep "\.idx\$") &&
 143         mv $objdir/pack/$idx backup-$idx &&
 144         test_when_finished "mv backup-\$idx \$objdir/pack/\$idx" &&
 145
 146         # This is the minimum size for a sha-1 based .idx; this lets
 147         # us pass perfunctory tests, but anything that actually opens and reads
 148         # the idx file will complain.
 149         test_copy_bytes 1064 <backup-$idx >$objdir/pack/$idx &&
 150
 151         git -c core.multiPackIndex=true rev-list --objects --all 2>err &&
 152         grep "index unavailable" err
 153 '
 154
 155 test_expect_success 'add more objects' '
 156         for i in $(test_seq 6 10)
 157         do
 158                 generate_objects $i || return 1
 159         done &&
 160         commit_and_list_objects
 161 '
 162
 163 test_expect_success 'write midx with two packs' '
 164         git pack-objects --index-version=1 $objdir/pack/test-2 <obj-list &&
 165         git multi-pack-index --object-dir=$objdir write &&
 166         midx_read_expect 2 34 4 $objdir
 167 '
 168
 169 compare_results_with_midx "two packs"
 170
 171 test_expect_success 'write midx with --stdin-packs' '
 172         rm -fr $objdir/pack/multi-pack-index &&
 173
 174         idx="$(find $objdir/pack -name "test-2-*.idx")" &&
 175         basename "$idx" >in &&
 176
 177         git multi-pack-index write --stdin-packs <in &&
 178
 179         test-tool read-midx $objdir | grep "\.idx$" >packs &&
 180
 181         test_cmp packs in
 182 '
 183
 184 compare_results_with_midx "mixed mode (one pack + extra)"
 185
 186 test_expect_success 'write with no objects and preferred pack' '
 187         test_when_finished "rm -rf empty" &&
 188         git init empty &&
 189         test_must_fail git -C empty multi-pack-index write \
 190                 --stdin-packs --preferred-pack=does-not-exist </dev/null 2>err &&
 191         cat >expect <<-EOF &&
 192         warning: unknown preferred pack: ${SQ}does-not-exist${SQ}
 193         error: no pack files to index.
 194         EOF
 195         test_cmp expect err
 196 '
 197
 198 test_expect_success 'write progress off for redirected stderr' '
 199         git multi-pack-index --object-dir=$objdir write 2>err &&
 200         test_line_count = 0 err
 201 '
 202
 203 test_expect_success 'write force progress on for stderr' '
 204         GIT_PROGRESS_DELAY=0 git multi-pack-index --object-dir=$objdir write --progress 2>err &&
 205         test_file_not_empty err
 206 '
 207
 208 test_expect_success 'write with the --no-progress option' '
 209         GIT_PROGRESS_DELAY=0 git multi-pack-index --object-dir=$objdir write --no-progress 2>err &&
 210         test_line_count = 0 err
 211 '
 212
 213 test_expect_success 'add more packs' '
 214         for j in $(test_seq 11 20)
 215         do
 216                 generate_objects $j &&
 217                 commit_and_list_objects &&
 218                 git pack-objects --index-version=2 $objdir/pack/test-pack <obj-list || return 1
 219         done
 220 '
 221
 222 compare_results_with_midx "mixed mode (two packs + extra)"
 223
 224 test_expect_success 'write midx with twelve packs' '
 225         git multi-pack-index --object-dir=$objdir write &&
 226         midx_read_expect 12 74 4 $objdir
 227 '
 228
 229 compare_results_with_midx "twelve packs"
 230
 231 test_expect_success 'multi-pack-index *.rev cleanup with --object-dir' '
 232         git init repo &&
 233         git clone -s repo alternate &&
 234
 235         test_when_finished "rm -rf repo alternate" &&
 236
 237         (
 238                 cd repo &&
 239                 test_commit base &&
 240                 git repack -d
 241         ) &&
 242
 243         ours="alternate/.git/objects/pack/multi-pack-index-123.rev" &&
 244         theirs="repo/.git/objects/pack/multi-pack-index-abc.rev" &&
 245         touch "$ours" "$theirs" &&
 246
 247         (
 248                 cd alternate &&
 249                 git multi-pack-index --object-dir ../repo/.git/objects write
 250         ) &&
 251
 252         # writing a midx in "repo" should not remove the .rev file in the
 253         # alternate
 254         test_path_is_file repo/.git/objects/pack/multi-pack-index &&
 255         test_path_is_file $ours &&
 256         test_path_is_missing $theirs
 257 '
 258
 259 test_expect_success 'warn on improper hash version' '
 260         git init --object-format=sha1 sha1 &&
 261         (
 262                 cd sha1 &&
 263                 git config core.multiPackIndex true &&
 264                 test_commit 1 &&
 265                 git repack -a &&
 266                 git multi-pack-index write &&
 267                 mv .git/objects/pack/multi-pack-index ../mpi-sha1
 268         ) &&
 269         git init --object-format=sha256 sha256 &&
 270         (
 271                 cd sha256 &&
 272                 git config core.multiPackIndex true &&
 273                 test_commit 1 &&
 274                 git repack -a &&
 275                 git multi-pack-index write &&
 276                 mv .git/objects/pack/multi-pack-index ../mpi-sha256
 277         ) &&
 278         (
 279                 cd sha1 &&
 280                 mv ../mpi-sha256 .git/objects/pack/multi-pack-index &&
 281                 git log -1 2>err &&
 282                 test_i18ngrep "multi-pack-index hash version 2 does not match version 1" err
 283         ) &&
 284         (
 285                 cd sha256 &&
 286                 mv ../mpi-sha1 .git/objects/pack/multi-pack-index &&
 287                 git log -1 2>err &&
 288                 test_i18ngrep "multi-pack-index hash version 1 does not match version 2" err
 289         )
 290 '
 291
 292 test_expect_success 'midx picks objects from preferred pack' '
 293         test_when_finished rm -rf preferred.git &&
 294         git init --bare preferred.git &&
 295         (
 296                 cd preferred.git &&
 297
 298                 a=$(echo "a" | git hash-object -w --stdin) &&
 299                 b=$(echo "b" | git hash-object -w --stdin) &&
 300                 c=$(echo "c" | git hash-object -w --stdin) &&
 301
 302                 # Set up two packs, duplicating the object "B" at different
 303                 # offsets.
 304                 #
 305                 # Note that the "BC" pack (the one we choose as preferred) sorts
 306                 # lexically after the "AB" pack, meaning that omitting the
 307                 # --preferred-pack argument would cause this test to fail (since
 308                 # the MIDX code would select the copy of "b" in the "AB" pack).
 309                 git pack-objects objects/pack/test-AB <<-EOF &&
 310                 $a
 311                 $b
 312                 EOF
 313                 bc=$(git pack-objects objects/pack/test-BC <<-EOF
 314                 $b
 315                 $c
 316                 EOF
 317                 ) &&
 318
 319                 git multi-pack-index --object-dir=objects \
 320                         write --preferred-pack=test-BC-$bc.idx 2>err &&
 321                 test_must_be_empty err &&
 322
 323                 test-tool read-midx --show-objects objects >out &&
 324
 325                 ofs=$(git show-index <objects/pack/test-BC-$bc.idx | grep $b |
 326                         cut -d" " -f1) &&
 327                 printf "%s %s\tobjects/pack/test-BC-%s.pack\n" \
 328                         "$b" "$ofs" "$bc" >expect &&
 329                 grep ^$b out >actual &&
 330
 331                 test_cmp expect actual
 332         )
 333 '
 334
 335 test_expect_success 'preferred packs must be non-empty' '
 336         test_when_finished rm -rf preferred.git &&
 337         git init preferred.git &&
 338         (
 339                 cd preferred.git &&
 340
 341                 test_commit base &&
 342                 git repack -ad &&
 343
 344                 empty="$(git pack-objects $objdir/pack/pack </dev/null)" &&
 345
 346                 test_must_fail git multi-pack-index write \
 347                         --preferred-pack=pack-$empty.pack 2>err &&
 348                 grep "with no objects" err
 349         )
 350 '
 351
 352 test_expect_success 'verify multi-pack-index success' '
 353         git multi-pack-index verify --object-dir=$objdir
 354 '
 355
 356 test_expect_success 'verify progress off for redirected stderr' '
 357         git multi-pack-index verify --object-dir=$objdir 2>err &&
 358         test_line_count = 0 err
 359 '
 360
 361 test_expect_success 'verify force progress on for stderr' '
 362         git multi-pack-index verify --object-dir=$objdir --progress 2>err &&
 363         test_file_not_empty err
 364 '
 365
 366 test_expect_success 'verify with the --no-progress option' '
 367         git multi-pack-index verify --object-dir=$objdir --no-progress 2>err &&
 368         test_line_count = 0 err
 369 '
 370
 371 # usage: corrupt_midx_and_verify <pos> <data> <objdir> <string>
 372 corrupt_midx_and_verify() {
 373         POS=$1 &&
 374         DATA="${2:-\0}" &&
 375         OBJDIR=$3 &&
 376         GREPSTR="$4" &&
 377         COMMAND="$5" &&
 378         if test -z "$COMMAND"
 379         then
 380                 COMMAND="git multi-pack-index verify --object-dir=$OBJDIR"
 381         fi &&
 382         FILE=$OBJDIR/pack/multi-pack-index &&
 383         chmod a+w $FILE &&
 384         test_when_finished mv midx-backup $FILE &&
 385         cp $FILE midx-backup &&
 386         printf "$DATA" | dd of="$FILE" bs=1 seek="$POS" conv=notrunc &&
 387         test_must_fail $COMMAND 2>test_err &&
 388         grep -v "^+" test_err >err &&
 389         test_i18ngrep "$GREPSTR" err
 390 }
 391
 392 test_expect_success 'verify bad signature' '
 393         corrupt_midx_and_verify 0 "\00" $objdir \
 394                 "multi-pack-index signature"
 395 '
 396
 397 NUM_OBJECTS=74
 398 MIDX_BYTE_VERSION=4
 399 MIDX_BYTE_OID_VERSION=5
 400 MIDX_BYTE_CHUNK_COUNT=6
 401 MIDX_HEADER_SIZE=12
 402 MIDX_BYTE_CHUNK_ID=$MIDX_HEADER_SIZE
 403 MIDX_BYTE_CHUNK_OFFSET=$(($MIDX_HEADER_SIZE + 4))
 404 MIDX_NUM_CHUNKS=5
 405 MIDX_CHUNK_LOOKUP_WIDTH=12
 406 MIDX_OFFSET_PACKNAMES=$(($MIDX_HEADER_SIZE + \
 407                          $MIDX_NUM_CHUNKS * $MIDX_CHUNK_LOOKUP_WIDTH))
 408 MIDX_BYTE_PACKNAME_ORDER=$(($MIDX_OFFSET_PACKNAMES + 2))
 409 MIDX_OFFSET_OID_FANOUT=$(($MIDX_OFFSET_PACKNAMES + $(test_oid packnameoff)))
 410 MIDX_OID_FANOUT_WIDTH=4
 411 MIDX_BYTE_OID_FANOUT_ORDER=$((MIDX_OFFSET_OID_FANOUT + 250 * $MIDX_OID_FANOUT_WIDTH + $(test_oid fanoutoff)))
 412 MIDX_OFFSET_OID_LOOKUP=$(($MIDX_OFFSET_OID_FANOUT + 256 * $MIDX_OID_FANOUT_WIDTH))
 413 MIDX_BYTE_OID_LOOKUP=$(($MIDX_OFFSET_OID_LOOKUP + 16 * $HASH_LEN))
 414 MIDX_OFFSET_OBJECT_OFFSETS=$(($MIDX_OFFSET_OID_LOOKUP + $NUM_OBJECTS * $HASH_LEN))
 415 MIDX_OFFSET_WIDTH=8
 416 MIDX_BYTE_PACK_INT_ID=$(($MIDX_OFFSET_OBJECT_OFFSETS + 16 * $MIDX_OFFSET_WIDTH + 2))
 417 MIDX_BYTE_OFFSET=$(($MIDX_OFFSET_OBJECT_OFFSETS + 16 * $MIDX_OFFSET_WIDTH + 6))
 418
 419 test_expect_success 'verify bad version' '
 420         corrupt_midx_and_verify $MIDX_BYTE_VERSION "\00" $objdir \
 421                 "multi-pack-index version"
 422 '
 423
 424 test_expect_success 'verify bad OID version' '
 425         corrupt_midx_and_verify $MIDX_BYTE_OID_VERSION "\03" $objdir \
 426                 "hash version"
 427 '
 428
 429 test_expect_success 'verify truncated chunk count' '
 430         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\01" $objdir \
 431                 "final chunk has non-zero id"
 432 '
 433
 434 test_expect_success 'verify extended chunk count' '
 435         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\07" $objdir \
 436                 "terminating chunk id appears earlier than expected"
 437 '
 438
 439 test_expect_success 'verify missing required chunk' '
 440         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_ID "\01" $objdir \
 441                 "missing required"
 442 '
 443
 444 test_expect_success 'verify invalid chunk offset' '
 445         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_OFFSET "\01" $objdir \
 446                 "improper chunk offset(s)"
 447 '
 448
 449 test_expect_success 'verify packnames out of order' '
 450         corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "z" $objdir \
 451                 "pack names out of order"
 452 '
 453
 454 test_expect_success 'verify packnames out of order' '
 455         corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "a" $objdir \
 456                 "failed to load pack"
 457 '
 458
 459 test_expect_success 'verify oid fanout out of order' '
 460         corrupt_midx_and_verify $MIDX_BYTE_OID_FANOUT_ORDER "\01" $objdir \
 461                 "oid fanout out of order"
 462 '
 463
 464 test_expect_success 'verify oid lookup out of order' '
 465         corrupt_midx_and_verify $MIDX_BYTE_OID_LOOKUP "\00" $objdir \
 466                 "oid lookup out of order"
 467 '
 468
 469 test_expect_success 'verify incorrect pack-int-id' '
 470         corrupt_midx_and_verify $MIDX_BYTE_PACK_INT_ID "\07" $objdir \
 471                 "bad pack-int-id"
 472 '
 473
 474 test_expect_success 'verify incorrect offset' '
 475         corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\377" $objdir \
 476                 "incorrect object offset"
 477 '
 478
 479 test_expect_success 'git-fsck incorrect offset' '
 480         corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\377" $objdir \
 481                 "incorrect object offset" \
 482                 "git -c core.multiPackIndex=true fsck" &&
 483         test_unconfig core.multiPackIndex &&
 484         test_must_fail git fsck &&
 485         git -c core.multiPackIndex=false fsck
 486 '
 487
 488 test_expect_success 'git fsck shows MIDX output with --progress' '
 489         git fsck --progress 2>err &&
 490         grep "Verifying OID order in multi-pack-index" err &&
 491         grep "Verifying object offsets" err
 492 '
 493
 494 test_expect_success 'git fsck suppresses MIDX output with --no-progress' '
 495         git fsck --no-progress 2>err &&
 496         ! grep "Verifying OID order in multi-pack-index" err &&
 497         ! grep "Verifying object offsets" err
 498 '
 499
 500 test_expect_success 'corrupt MIDX is not reused' '
 501         corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\377" $objdir \
 502                 "incorrect object offset" &&
 503         git multi-pack-index write 2>err &&
 504         test_i18ngrep checksum.mismatch err &&
 505         git multi-pack-index verify
 506 '
 507
 508 test_expect_success 'verify incorrect checksum' '
 509         pos=$(($(wc -c <$objdir/pack/multi-pack-index) - 10)) &&
 510         corrupt_midx_and_verify $pos \
 511                 "\377\377\377\377\377\377\377\377\377\377" \
 512                 $objdir "incorrect checksum"
 513 '
 514
 515 test_expect_success 'repack progress off for redirected stderr' '
 516         GIT_PROGRESS_DELAY=0 git multi-pack-index --object-dir=$objdir repack 2>err &&
 517         test_line_count = 0 err
 518 '
 519
 520 test_expect_success 'repack force progress on for stderr' '
 521         GIT_PROGRESS_DELAY=0 git multi-pack-index --object-dir=$objdir repack --progress 2>err &&
 522         test_file_not_empty err
 523 '
 524
 525 test_expect_success 'repack with the --no-progress option' '
 526         GIT_PROGRESS_DELAY=0 git multi-pack-index --object-dir=$objdir repack --no-progress 2>err &&
 527         test_line_count = 0 err
 528 '
 529
 530 test_expect_success 'repack removes multi-pack-index when deleting packs' '
 531         test_path_is_file $objdir/pack/multi-pack-index &&
 532         # Set GIT_TEST_MULTI_PACK_INDEX to 0 to avoid writing a new
 533         # multi-pack-index after repacking, but set "core.multiPackIndex" to
 534         # true so that "git repack" can read the existing MIDX.
 535         GIT_TEST_MULTI_PACK_INDEX=0 git -c core.multiPackIndex repack -adf &&
 536         test_path_is_missing $objdir/pack/multi-pack-index
 537 '
 538
 539 test_expect_success 'repack preserves multi-pack-index when creating packs' '
 540         git init preserve &&
 541         test_when_finished "rm -fr preserve" &&
 542         (
 543                 cd preserve &&
 544                 packdir=.git/objects/pack &&
 545                 midx=$packdir/multi-pack-index &&
 546
 547                 test_commit 1 &&
 548                 pack1=$(git pack-objects --all $packdir/pack) &&
 549                 touch $packdir/pack-$pack1.keep &&
 550                 test_commit 2 &&
 551                 pack2=$(git pack-objects --revs $packdir/pack) &&
 552                 touch $packdir/pack-$pack2.keep &&
 553
 554                 git multi-pack-index write &&
 555                 cp $midx $midx.bak &&
 556
 557                 cat >pack-input <<-EOF &&
 558                 HEAD
 559                 ^HEAD~1
 560                 EOF
 561                 test_commit 3 &&
 562                 pack3=$(git pack-objects --revs $packdir/pack <pack-input) &&
 563                 test_commit 4 &&
 564                 pack4=$(git pack-objects --revs $packdir/pack <pack-input) &&
 565
 566                 GIT_TEST_MULTI_PACK_INDEX=0 git -c core.multiPackIndex repack -ad &&
 567                 ls -la $packdir &&
 568                 test_path_is_file $packdir/pack-$pack1.pack &&
 569                 test_path_is_file $packdir/pack-$pack2.pack &&
 570                 test_path_is_missing $packdir/pack-$pack3.pack &&
 571                 test_path_is_missing $packdir/pack-$pack4.pack &&
 572                 test_cmp_bin $midx.bak $midx
 573         )
 574 '
 575
 576 compare_results_with_midx "after repack"
 577
 578 test_expect_success 'multi-pack-index and pack-bitmap' '
 579         GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP=0 \
 580                 git -c repack.writeBitmaps=true repack -ad &&
 581         git multi-pack-index write &&
 582         git rev-list --test-bitmap HEAD
 583 '
 584
 585 test_expect_success 'multi-pack-index and alternates' '
 586         git init --bare alt.git &&
 587         echo $(pwd)/alt.git/objects >.git/objects/info/alternates &&
 588         echo content1 >file1 &&
 589         altblob=$(GIT_DIR=alt.git git hash-object -w file1) &&
 590         git cat-file blob $altblob &&
 591         git rev-list --all
 592 '
 593
 594 compare_results_with_midx "with alternate (local midx)"
 595
 596 test_expect_success 'multi-pack-index in an alternate' '
 597         mv .git/objects/pack/* alt.git/objects/pack &&
 598         test_commit add_local_objects &&
 599         git repack --local &&
 600         git multi-pack-index write &&
 601         midx_read_expect 1 3 4 $objdir &&
 602         git reset --hard HEAD~1 &&
 603         rm -f .git/objects/pack/*
 604 '
 605
 606 compare_results_with_midx "with alternate (remote midx)"
 607
 608 # usage: corrupt_data <file> <pos> [<data>]
 609 corrupt_data () {
 610         file=$1
 611         pos=$2
 612         data="${3:-\0}"
 613         printf "$data" | dd of="$file" bs=1 seek="$pos" conv=notrunc
 614 }
 615
 616 # Force 64-bit offsets by manipulating the idx file.
 617 # This makes the IDX file _incorrect_ so be careful to clean up after!
 618 test_expect_success 'force some 64-bit offsets with pack-objects' '
 619         mkdir objects64 &&
 620         mkdir objects64/pack &&
 621         for i in $(test_seq 1 11)
 622         do
 623                 generate_objects 11 || return 1
 624         done &&
 625         commit_and_list_objects &&
 626         pack64=$(git pack-objects --index-version=2,0x40 objects64/pack/test-64 <obj-list) &&
 627         idx64=objects64/pack/test-64-$pack64.idx &&
 628         chmod u+w $idx64 &&
 629         corrupt_data $idx64 $(test_oid idxoff) "\02" &&
 630         # objects64 is not a real repository, but can serve as an alternate
 631         # anyway so we can write a MIDX into it
 632         git init repo &&
 633         test_when_finished "rm -fr repo" &&
 634         (
 635                 cd repo &&
 636                 ( cd ../objects64 && pwd ) >.git/objects/info/alternates &&
 637                 midx64=$(git multi-pack-index --object-dir=../objects64 write)
 638         ) &&
 639         midx_read_expect 1 63 5 objects64 " large-offsets"
 640 '
 641
 642 test_expect_success 'verify multi-pack-index with 64-bit offsets' '
 643         git multi-pack-index verify --object-dir=objects64
 644 '
 645
 646 NUM_OBJECTS=63
 647 MIDX_OFFSET_OID_FANOUT=$((MIDX_OFFSET_PACKNAMES + 54))
 648 MIDX_OFFSET_OID_LOOKUP=$((MIDX_OFFSET_OID_FANOUT + 256 * $MIDX_OID_FANOUT_WIDTH))
 649 MIDX_OFFSET_OBJECT_OFFSETS=$(($MIDX_OFFSET_OID_LOOKUP + $NUM_OBJECTS * $HASH_LEN))
 650 MIDX_OFFSET_LARGE_OFFSETS=$(($MIDX_OFFSET_OBJECT_OFFSETS + $NUM_OBJECTS * $MIDX_OFFSET_WIDTH))
 651 MIDX_BYTE_LARGE_OFFSET=$(($MIDX_OFFSET_LARGE_OFFSETS + 3))
 652
 653 test_expect_success 'verify incorrect 64-bit offset' '
 654         corrupt_midx_and_verify $MIDX_BYTE_LARGE_OFFSET "\07" objects64 \
 655                 "incorrect object offset"
 656 '
 657
 658 test_expect_success 'setup expire tests' '
 659         mkdir dup &&
 660         (
 661                 cd dup &&
 662                 git init &&
 663                 test-tool genrandom "data" 4096 >large_file.txt &&
 664                 git update-index --add large_file.txt &&
 665                 for i in $(test_seq 1 20)
 666                 do
 667                         test_commit $i || exit 1
 668                 done &&
 669                 git branch A HEAD &&
 670                 git branch B HEAD~8 &&
 671                 git branch C HEAD~13 &&
 672                 git branch D HEAD~16 &&
 673                 git branch E HEAD~18 &&
 674                 git pack-objects --revs .git/objects/pack/pack-A <<-EOF &&
 675                 refs/heads/A
 676                 ^refs/heads/B
 677                 EOF
 678                 git pack-objects --revs .git/objects/pack/pack-B <<-EOF &&
 679                 refs/heads/B
 680                 ^refs/heads/C
 681                 EOF
 682                 git pack-objects --revs .git/objects/pack/pack-C <<-EOF &&
 683                 refs/heads/C
 684                 ^refs/heads/D
 685                 EOF
 686                 git pack-objects --revs .git/objects/pack/pack-D <<-EOF &&
 687                 refs/heads/D
 688                 ^refs/heads/E
 689                 EOF
 690                 git pack-objects --revs .git/objects/pack/pack-E <<-EOF &&
 691                 refs/heads/E
 692                 EOF
 693                 git multi-pack-index write &&
 694                 cp -r .git/objects/pack .git/objects/pack-backup
 695         )
 696 '
 697
 698 test_expect_success 'expire does not remove any packs' '
 699         (
 700                 cd dup &&
 701                 ls .git/objects/pack >expect &&
 702                 git multi-pack-index expire &&
 703                 ls .git/objects/pack >actual &&
 704                 test_cmp expect actual
 705         )
 706 '
 707
 708 test_expect_success 'expire progress off for redirected stderr' '
 709         (
 710                 cd dup &&
 711                 git multi-pack-index expire 2>err &&
 712                 test_line_count = 0 err
 713         )
 714 '
 715
 716 test_expect_success 'expire force progress on for stderr' '
 717         (
 718                 cd dup &&
 719                 GIT_PROGRESS_DELAY=0 git multi-pack-index expire --progress 2>err &&
 720                 test_file_not_empty err
 721         )
 722 '
 723
 724 test_expect_success 'expire with the --no-progress option' '
 725         (
 726                 cd dup &&
 727                 GIT_PROGRESS_DELAY=0 git multi-pack-index expire --no-progress 2>err &&
 728                 test_line_count = 0 err
 729         )
 730 '
 731
 732 test_expect_success 'expire removes unreferenced packs' '
 733         (
 734                 cd dup &&
 735                 git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
 736                 refs/heads/A
 737                 ^refs/heads/C
 738                 EOF
 739                 git multi-pack-index write &&
 740                 ls .git/objects/pack | grep -v -e pack-[AB] >expect &&
 741                 git multi-pack-index expire &&
 742                 ls .git/objects/pack >actual &&
 743                 test_cmp expect actual &&
 744                 ls .git/objects/pack/ | grep idx >expect-idx &&
 745                 test-tool read-midx .git/objects | grep idx >actual-midx &&
 746                 test_cmp expect-idx actual-midx &&
 747                 git multi-pack-index verify &&
 748                 git fsck
 749         )
 750 '
 751
 752 test_expect_success 'repack with minimum size does not alter existing packs' '
 753         (
 754                 cd dup &&
 755                 rm -rf .git/objects/pack &&
 756                 mv .git/objects/pack-backup .git/objects/pack &&
 757                 test-tool chmtime =-5 .git/objects/pack/pack-D* &&
 758                 test-tool chmtime =-4 .git/objects/pack/pack-C* &&
 759                 test-tool chmtime =-3 .git/objects/pack/pack-B* &&
 760                 test-tool chmtime =-2 .git/objects/pack/pack-A* &&
 761                 ls .git/objects/pack >expect &&
 762                 MINSIZE=$(test-tool path-utils file-size .git/objects/pack/*pack | sort -n | head -n 1) &&
 763                 git multi-pack-index repack --batch-size=$MINSIZE &&
 764                 ls .git/objects/pack >actual &&
 765                 test_cmp expect actual
 766         )
 767 '
 768
 769 test_expect_success 'repack respects repack.packKeptObjects=false' '
 770         test_when_finished rm -f dup/.git/objects/pack/*keep &&
 771         (
 772                 cd dup &&
 773                 ls .git/objects/pack/*idx >idx-list &&
 774                 test_line_count = 5 idx-list &&
 775                 ls .git/objects/pack/*.pack | sed "s/\.pack/.keep/" >keep-list &&
 776                 test_line_count = 5 keep-list &&
 777                 for keep in $(cat keep-list)
 778                 do
 779                         touch $keep || return 1
 780                 done &&
 781                 git multi-pack-index repack --batch-size=0 &&
 782                 ls .git/objects/pack/*idx >idx-list &&
 783                 test_line_count = 5 idx-list &&
 784                 test-tool read-midx .git/objects | grep idx >midx-list &&
 785                 test_line_count = 5 midx-list &&
 786                 THIRD_SMALLEST_SIZE=$(test-tool path-utils file-size .git/objects/pack/*pack | sort -n | sed -n 3p) &&
 787                 BATCH_SIZE=$((THIRD_SMALLEST_SIZE + 1)) &&
 788                 git multi-pack-index repack --batch-size=$BATCH_SIZE &&
 789                 ls .git/objects/pack/*idx >idx-list &&
 790                 test_line_count = 5 idx-list &&
 791                 test-tool read-midx .git/objects | grep idx >midx-list &&
 792                 test_line_count = 5 midx-list
 793         )
 794 '
 795
 796 test_expect_success 'repack creates a new pack' '
 797         (
 798                 cd dup &&
 799                 ls .git/objects/pack/*idx >idx-list &&
 800                 test_line_count = 5 idx-list &&
 801                 THIRD_SMALLEST_SIZE=$(test-tool path-utils file-size .git/objects/pack/*pack | sort -n | head -n 3 | tail -n 1) &&
 802                 BATCH_SIZE=$(($THIRD_SMALLEST_SIZE + 1)) &&
 803                 git multi-pack-index repack --batch-size=$BATCH_SIZE &&
 804                 ls .git/objects/pack/*idx >idx-list &&
 805                 test_line_count = 6 idx-list &&
 806                 test-tool read-midx .git/objects | grep idx >midx-list &&
 807                 test_line_count = 6 midx-list
 808         )
 809 '
 810
 811 test_expect_success 'repack (all) ignores cruft pack' '
 812         git init repo &&
 813         test_when_finished "rm -fr repo" &&
 814         (
 815                 cd repo &&
 816
 817                 test_commit base &&
 818                 test_commit --no-tag unreachable &&
 819
 820                 git reset --hard base &&
 821                 git reflog expire --all --expire=all &&
 822                 git repack --cruft -d &&
 823
 824                 git multi-pack-index write &&
 825
 826                 find $objdir/pack | sort >before &&
 827                 git multi-pack-index repack --batch-size=0 &&
 828                 find $objdir/pack | sort >after &&
 829
 830                 test_cmp before after
 831         )
 832 '
 833
 834 test_expect_success 'repack (--batch-size) ignores cruft pack' '
 835         git init repo &&
 836         test_when_finished "rm -fr repo" &&
 837         (
 838                 cd repo &&
 839
 840                 test_commit_bulk 5 &&
 841                 test_commit --no-tag unreachable &&
 842
 843                 git reset --hard HEAD^ &&
 844                 git reflog expire --all --expire=all &&
 845                 git repack --cruft -d &&
 846
 847                 test_commit four &&
 848
 849                 find $objdir/pack -type f -name "*.pack" | sort >before &&
 850                 git repack -d &&
 851                 find $objdir/pack -type f -name "*.pack" | sort >after &&
 852
 853                 pack="$(comm -13 before after)" &&
 854                 test_file_size "$pack" >sz &&
 855                 # Set --batch-size to twice the size of the pack created
 856                 # in the previous step, since this is enough to
 857                 # accommodate it and the cruft pack.
 858                 #
 859                 # This means that the MIDX machinery *could* combine the
 860                 # new and cruft packs together.
 861                 #
 862                 # We ensure that it does not below.
 863                 batch="$((($(cat sz) * 2)))" &&
 864
 865                 git multi-pack-index write &&
 866
 867                 find $objdir/pack | sort >before &&
 868                 git multi-pack-index repack --batch-size=$batch &&
 869                 find $objdir/pack | sort >after &&
 870
 871                 test_cmp before after
 872         )
 873 '
 874
 875 test_expect_success 'expire removes repacked packs' '
 876         (
 877                 cd dup &&
 878                 ls -al .git/objects/pack/*pack &&
 879                 ls -S .git/objects/pack/*pack | head -n 4 >expect &&
 880                 git multi-pack-index expire &&
 881                 ls -S .git/objects/pack/*pack >actual &&
 882                 test_cmp expect actual &&
 883                 test-tool read-midx .git/objects | grep idx >midx-list &&
 884                 test_line_count = 4 midx-list
 885         )
 886 '
 887
 888 test_expect_success 'expire works when adding new packs' '
 889         (
 890                 cd dup &&
 891                 git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
 892                 refs/heads/A
 893                 ^refs/heads/B
 894                 EOF
 895                 git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
 896                 refs/heads/B
 897                 ^refs/heads/C
 898                 EOF
 899                 git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
 900                 refs/heads/C
 901                 ^refs/heads/D
 902                 EOF
 903                 git multi-pack-index write &&
 904                 git pack-objects --revs .git/objects/pack/a-pack <<-EOF &&
 905                 refs/heads/D
 906                 ^refs/heads/E
 907                 EOF
 908                 git multi-pack-index write &&
 909                 git pack-objects --revs .git/objects/pack/z-pack <<-EOF &&
 910                 refs/heads/E
 911                 EOF
 912                 git multi-pack-index expire &&
 913                 ls .git/objects/pack/ | grep idx >expect &&
 914                 test-tool read-midx .git/objects | grep idx >actual &&
 915                 test_cmp expect actual &&
 916                 git multi-pack-index verify
 917         )
 918 '
 919
 920 test_expect_success 'expire respects .keep files' '
 921         (
 922                 cd dup &&
 923                 git pack-objects --revs .git/objects/pack/pack-all <<-EOF &&
 924                 refs/heads/A
 925                 EOF
 926                 git multi-pack-index write &&
 927                 PACKA=$(ls .git/objects/pack/a-pack*\.pack | sed s/\.pack\$//) &&
 928                 touch $PACKA.keep &&
 929                 git multi-pack-index expire &&
 930                 test_path_is_file $PACKA.idx &&
 931                 test_path_is_file $PACKA.keep &&
 932                 test_path_is_file $PACKA.pack &&
 933                 test-tool read-midx .git/objects | grep idx >midx-list &&
 934                 test_line_count = 2 midx-list
 935         )
 936 '
 937
 938 test_expect_success 'expiring unreferenced cruft pack retains pack' '
 939         git init repo &&
 940         test_when_finished "rm -fr repo" &&
 941         (
 942                 cd repo &&
 943
 944                 test_commit base &&
 945                 test_commit --no-tag unreachable &&
 946                 unreachable=$(git rev-parse HEAD) &&
 947
 948                 git reset --hard base &&
 949                 git reflog expire --all --expire=all &&
 950                 git repack --cruft -d &&
 951                 mtimes="$(ls $objdir/pack/pack-*.mtimes)" &&
 952
 953                 echo "base..$unreachable" >in &&
 954                 pack="$(git pack-objects --revs --delta-base-offset \
 955                         $objdir/pack/pack <in)" &&
 956
 957                 # Preferring the contents of "$pack" will leave the
 958                 # cruft pack unreferenced (ie., none of the objects
 959                 # contained in the cruft pack will have their MIDX copy
 960                 # selected from the cruft pack).
 961                 git multi-pack-index write --preferred-pack="pack-$pack.pack" &&
 962                 git multi-pack-index expire &&
 963
 964                 test_path_is_file "$mtimes"
 965         )
 966 '
 967
 968 test_expect_success 'repack --batch-size=0 repacks everything' '
 969         cp -r dup dup2 &&
 970         (
 971                 cd dup &&
 972                 rm .git/objects/pack/*.keep &&
 973                 ls .git/objects/pack/*idx >idx-list &&
 974                 test_line_count = 2 idx-list &&
 975                 git multi-pack-index repack --batch-size=0 &&
 976                 ls .git/objects/pack/*idx >idx-list &&
 977                 test_line_count = 3 idx-list &&
 978                 test-tool read-midx .git/objects | grep idx >midx-list &&
 979                 test_line_count = 3 midx-list &&
 980                 git multi-pack-index expire &&
 981                 ls -al .git/objects/pack/*idx >idx-list &&
 982                 test_line_count = 1 idx-list &&
 983                 git multi-pack-index repack --batch-size=0 &&
 984                 ls -al .git/objects/pack/*idx >new-idx-list &&
 985                 test_cmp idx-list new-idx-list
 986         )
 987 '
 988
 989 test_expect_success 'repack --batch-size=<large> repacks everything' '
 990         (
 991                 cd dup2 &&
 992                 rm .git/objects/pack/*.keep &&
 993                 ls .git/objects/pack/*idx >idx-list &&
 994                 test_line_count = 2 idx-list &&
 995                 git multi-pack-index repack --batch-size=2000000 &&
 996                 ls .git/objects/pack/*idx >idx-list &&
 997                 test_line_count = 3 idx-list &&
 998                 test-tool read-midx .git/objects | grep idx >midx-list &&
 999                 test_line_count = 3 midx-list &&
1000                 git multi-pack-index expire &&
1001                 ls -al .git/objects/pack/*idx >idx-list &&
1002                 test_line_count = 1 idx-list
1003         )
1004 '
1005
1006 test_expect_success 'load reverse index when missing .idx, .pack' '
1007         git init repo &&
1008         test_when_finished "rm -fr repo" &&
1009         (
1010                 cd repo &&
1011
1012                 git config core.multiPackIndex true &&
1013
1014                 test_commit base &&
1015                 git repack -ad &&
1016                 git multi-pack-index write &&
1017
1018                 git rev-parse HEAD >tip &&
1019                 pack=$(ls .git/objects/pack/pack-*.pack) &&
1020                 idx=$(ls .git/objects/pack/pack-*.idx) &&
1021
1022                 mv $idx $idx.bak &&
1023                 git cat-file --batch-check="%(objectsize:disk)" <tip &&
1024
1025                 mv $idx.bak $idx &&
1026
1027                 mv $pack $pack.bak &&
1028                 git cat-file --batch-check="%(objectsize:disk)" <tip
1029         )
1030 '
1031
1032 test_expect_success 'usage shown without sub-command' '
1033         test_expect_code 129 git multi-pack-index 2>err &&
1034         ! test_i18ngrep "unrecognized subcommand" err
1035 '
1036
1037 test_expect_success 'complains when run outside of a repository' '
1038         nongit test_must_fail git multi-pack-index write 2>err &&
1039         grep "not a git repository" err
1040 '
1041
1042 test_expect_success 'repack with delta islands' '
1043         git init repo &&
1044         test_when_finished "rm -fr repo" &&
1045         (
1046                 cd repo &&
1047
1048                 test_commit first &&
1049                 git repack &&
1050                 test_commit second &&
1051                 git repack &&
1052
1053                 git multi-pack-index write &&
1054                 git -c repack.useDeltaIslands=true multi-pack-index repack
1055         )
1056 '
1057
1058 test_done