t/t5319-multi-pack-index.sh

   1 #!/bin/sh
   2
   3 test_description='multi-pack-indexes'
   4 . ./test-lib.sh
   5
   6 objdir=.git/objects
   7
   8 midx_read_expect () {
   9         NUM_PACKS=$1
  10         NUM_OBJECTS=$2
  11         NUM_CHUNKS=$3
  12         OBJECT_DIR=$4
  13         EXTRA_CHUNKS="$5"
  14         {
  15                 cat <<-EOF &&
  16                 header: 4d494458 1 $NUM_CHUNKS $NUM_PACKS
  17                 chunks: pack-names oid-fanout oid-lookup object-offsets$EXTRA_CHUNKS
  18                 num_objects: $NUM_OBJECTS
  19                 packs:
  20                 EOF
  21                 if test $NUM_PACKS -ge 1
  22                 then
  23                         ls $OBJECT_DIR/pack/ | grep idx | sort
  24                 fi &&
  25                 printf "object-dir: $OBJECT_DIR\n"
  26         } >expect &&
  27         test-tool read-midx $OBJECT_DIR >actual &&
  28         test_cmp expect actual
  29 }
  30
  31 test_expect_success 'setup' '
  32         test_oid_init &&
  33         test_oid_cache <<-EOF
  34         idxoff sha1:2999
  35         idxoff sha256:3739
  36
  37         packnameoff sha1:652
  38         packnameoff sha256:940
  39
  40         fanoutoff sha1:1
  41         fanoutoff sha256:3
  42         EOF
  43 '
  44
  45 test_expect_success 'write midx with no packs' '
  46         test_when_finished rm -f pack/multi-pack-index &&
  47         git multi-pack-index --object-dir=. write &&
  48         midx_read_expect 0 0 4 .
  49 '
  50
  51 generate_objects () {
  52         i=$1
  53         iii=$(printf '%03i' $i)
  54         {
  55                 test-tool genrandom "bar" 200 &&
  56                 test-tool genrandom "baz $iii" 50
  57         } >wide_delta_$iii &&
  58         {
  59                 test-tool genrandom "foo"$i 100 &&
  60                 test-tool genrandom "foo"$(( $i + 1 )) 100 &&
  61                 test-tool genrandom "foo"$(( $i + 2 )) 100
  62         } >deep_delta_$iii &&
  63         {
  64                 echo $iii &&
  65                 test-tool genrandom "$iii" 8192
  66         } >file_$iii &&
  67         git update-index --add file_$iii deep_delta_$iii wide_delta_$iii
  68 }
  69
  70 commit_and_list_objects () {
  71         {
  72                 echo 101 &&
  73                 test-tool genrandom 100 8192;
  74         } >file_101 &&
  75         git update-index --add file_101 &&
  76         tree=$(git write-tree) &&
  77         commit=$(git commit-tree $tree -p HEAD</dev/null) &&
  78         {
  79                 echo $tree &&
  80                 git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\)        .*/\\1/"
  81         } >obj-list &&
  82         git reset --hard $commit
  83 }
  84
  85 test_expect_success 'create objects' '
  86         test_commit initial &&
  87         for i in $(test_seq 1 5)
  88         do
  89                 generate_objects $i
  90         done &&
  91         commit_and_list_objects
  92 '
  93
  94 test_expect_success 'write midx with one v1 pack' '
  95         pack=$(git pack-objects --index-version=1 $objdir/pack/test <obj-list) &&
  96         test_when_finished rm $objdir/pack/test-$pack.pack \
  97                 $objdir/pack/test-$pack.idx $objdir/pack/multi-pack-index &&
  98         git multi-pack-index --object-dir=$objdir write &&
  99         midx_read_expect 1 18 4 $objdir
 100 '
 101
 102 midx_git_two_modes () {
 103         git -c core.multiPackIndex=false $1 >expect &&
 104         git -c core.multiPackIndex=true $1 >actual &&
 105         if [ "$2" = "sorted" ]
 106         then
 107                 sort <expect >expect.sorted &&
 108                 mv expect.sorted expect &&
 109                 sort <actual >actual.sorted &&
 110                 mv actual.sorted actual
 111         fi &&
 112         test_cmp expect actual
 113 }
 114
 115 compare_results_with_midx () {
 116         MSG=$1
 117         test_expect_success "check normal git operations: $MSG" '
 118                 midx_git_two_modes "rev-list --objects --all" &&
 119                 midx_git_two_modes "log --raw" &&
 120                 midx_git_two_modes "count-objects --verbose" &&
 121                 midx_git_two_modes "cat-file --batch-all-objects --batch-check" &&
 122                 midx_git_two_modes "cat-file --batch-all-objects --batch-check --unordered" sorted
 123         '
 124 }
 125
 126 test_expect_success 'write midx with one v2 pack' '
 127         git pack-objects --index-version=2,0x40 $objdir/pack/test <obj-list &&
 128         git multi-pack-index --object-dir=$objdir write &&
 129         midx_read_expect 1 18 4 $objdir
 130 '
 131
 132 compare_results_with_midx "one v2 pack"
 133
 134 test_expect_success 'corrupt idx not opened' '
 135         idx=$(test-tool read-midx $objdir | grep "\.idx\$") &&
 136         mv $objdir/pack/$idx backup-$idx &&
 137         test_when_finished "mv backup-\$idx \$objdir/pack/\$idx" &&
 138
 139         # This is the minimum size for a sha-1 based .idx; this lets
 140         # us pass perfunctory tests, but anything that actually opens and reads
 141         # the idx file will complain.
 142         test_copy_bytes 1064 <backup-$idx >$objdir/pack/$idx &&
 143
 144         git -c core.multiPackIndex=true rev-list --objects --all 2>err &&
 145         test_must_be_empty err
 146 '
 147
 148 test_expect_success 'add more objects' '
 149         for i in $(test_seq 6 10)
 150         do
 151                 generate_objects $i
 152         done &&
 153         commit_and_list_objects
 154 '
 155
 156 test_expect_success 'write midx with two packs' '
 157         git pack-objects --index-version=1 $objdir/pack/test-2 <obj-list &&
 158         git multi-pack-index --object-dir=$objdir write &&
 159         midx_read_expect 2 34 4 $objdir
 160 '
 161
 162 compare_results_with_midx "two packs"
 163
 164 test_expect_success 'write progress off for redirected stderr' '
 165         git multi-pack-index --object-dir=$objdir write 2>err &&
 166         test_line_count = 0 err
 167 '
 168
 169 test_expect_success 'write force progress on for stderr' '
 170         git multi-pack-index --object-dir=$objdir --progress write 2>err &&
 171         test_file_not_empty err
 172 '
 173
 174 test_expect_success 'write with the --no-progress option' '
 175         git multi-pack-index --object-dir=$objdir --no-progress write 2>err &&
 176         test_line_count = 0 err
 177 '
 178
 179 test_expect_success 'add more packs' '
 180         for j in $(test_seq 11 20)
 181         do
 182                 generate_objects $j &&
 183                 commit_and_list_objects &&
 184                 git pack-objects --index-version=2 $objdir/pack/test-pack <obj-list
 185         done
 186 '
 187
 188 compare_results_with_midx "mixed mode (two packs + extra)"
 189
 190 test_expect_success 'write midx with twelve packs' '
 191         git multi-pack-index --object-dir=$objdir write &&
 192         midx_read_expect 12 74 4 $objdir
 193 '
 194
 195 compare_results_with_midx "twelve packs"
 196
 197 test_expect_success 'verify multi-pack-index success' '
 198         git multi-pack-index verify --object-dir=$objdir
 199 '
 200
 201 test_expect_success 'verify progress off for redirected stderr' '
 202         git multi-pack-index verify --object-dir=$objdir 2>err &&
 203         test_line_count = 0 err
 204 '
 205
 206 test_expect_success 'verify force progress on for stderr' '
 207         git multi-pack-index verify --object-dir=$objdir --progress 2>err &&
 208         test_file_not_empty err
 209 '
 210
 211 test_expect_success 'verify with the --no-progress option' '
 212         git multi-pack-index verify --object-dir=$objdir --no-progress 2>err &&
 213         test_line_count = 0 err
 214 '
 215
 216 # usage: corrupt_midx_and_verify <pos> <data> <objdir> <string>
 217 corrupt_midx_and_verify() {
 218         POS=$1 &&
 219         DATA="${2:-\0}" &&
 220         OBJDIR=$3 &&
 221         GREPSTR="$4" &&
 222         COMMAND="$5" &&
 223         if test -z "$COMMAND"
 224         then
 225                 COMMAND="git multi-pack-index verify --object-dir=$OBJDIR"
 226         fi &&
 227         FILE=$OBJDIR/pack/multi-pack-index &&
 228         chmod a+w $FILE &&
 229         test_when_finished mv midx-backup $FILE &&
 230         cp $FILE midx-backup &&
 231         printf "$DATA" | dd of="$FILE" bs=1 seek="$POS" conv=notrunc &&
 232         test_must_fail $COMMAND 2>test_err &&
 233         grep -v "^+" test_err >err &&
 234         test_i18ngrep "$GREPSTR" err
 235 }
 236
 237 test_expect_success 'verify bad signature' '
 238         corrupt_midx_and_verify 0 "\00" $objdir \
 239                 "multi-pack-index signature"
 240 '
 241
 242 HASH_LEN=$(test_oid rawsz)
 243 NUM_OBJECTS=74
 244 MIDX_BYTE_VERSION=4
 245 MIDX_BYTE_OID_VERSION=5
 246 MIDX_BYTE_CHUNK_COUNT=6
 247 MIDX_HEADER_SIZE=12
 248 MIDX_BYTE_CHUNK_ID=$MIDX_HEADER_SIZE
 249 MIDX_BYTE_CHUNK_OFFSET=$(($MIDX_HEADER_SIZE + 4))
 250 MIDX_NUM_CHUNKS=5
 251 MIDX_CHUNK_LOOKUP_WIDTH=12
 252 MIDX_OFFSET_PACKNAMES=$(($MIDX_HEADER_SIZE + \
 253                          $MIDX_NUM_CHUNKS * $MIDX_CHUNK_LOOKUP_WIDTH))
 254 MIDX_BYTE_PACKNAME_ORDER=$(($MIDX_OFFSET_PACKNAMES + 2))
 255 MIDX_OFFSET_OID_FANOUT=$(($MIDX_OFFSET_PACKNAMES + $(test_oid packnameoff)))
 256 MIDX_OID_FANOUT_WIDTH=4
 257 MIDX_BYTE_OID_FANOUT_ORDER=$((MIDX_OFFSET_OID_FANOUT + 250 * $MIDX_OID_FANOUT_WIDTH + $(test_oid fanoutoff)))
 258 MIDX_OFFSET_OID_LOOKUP=$(($MIDX_OFFSET_OID_FANOUT + 256 * $MIDX_OID_FANOUT_WIDTH))
 259 MIDX_BYTE_OID_LOOKUP=$(($MIDX_OFFSET_OID_LOOKUP + 16 * $HASH_LEN))
 260 MIDX_OFFSET_OBJECT_OFFSETS=$(($MIDX_OFFSET_OID_LOOKUP + $NUM_OBJECTS * $HASH_LEN))
 261 MIDX_OFFSET_WIDTH=8
 262 MIDX_BYTE_PACK_INT_ID=$(($MIDX_OFFSET_OBJECT_OFFSETS + 16 * $MIDX_OFFSET_WIDTH + 2))
 263 MIDX_BYTE_OFFSET=$(($MIDX_OFFSET_OBJECT_OFFSETS + 16 * $MIDX_OFFSET_WIDTH + 6))
 264
 265 test_expect_success 'verify bad version' '
 266         corrupt_midx_and_verify $MIDX_BYTE_VERSION "\00" $objdir \
 267                 "multi-pack-index version"
 268 '
 269
 270 test_expect_success 'verify bad OID version' '
 271         corrupt_midx_and_verify $MIDX_BYTE_OID_VERSION "\02" $objdir \
 272                 "hash version"
 273 '
 274
 275 test_expect_success 'verify truncated chunk count' '
 276         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\01" $objdir \
 277                 "missing required"
 278 '
 279
 280 test_expect_success 'verify extended chunk count' '
 281         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\07" $objdir \
 282                 "terminating multi-pack-index chunk id appears earlier than expected"
 283 '
 284
 285 test_expect_success 'verify missing required chunk' '
 286         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_ID "\01" $objdir \
 287                 "missing required"
 288 '
 289
 290 test_expect_success 'verify invalid chunk offset' '
 291         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_OFFSET "\01" $objdir \
 292                 "invalid chunk offset (too large)"
 293 '
 294
 295 test_expect_success 'verify packnames out of order' '
 296         corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "z" $objdir \
 297                 "pack names out of order"
 298 '
 299
 300 test_expect_success 'verify packnames out of order' '
 301         corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "a" $objdir \
 302                 "failed to load pack"
 303 '
 304
 305 test_expect_success 'verify oid fanout out of order' '
 306         corrupt_midx_and_verify $MIDX_BYTE_OID_FANOUT_ORDER "\01" $objdir \
 307                 "oid fanout out of order"
 308 '
 309
 310 test_expect_success 'verify oid lookup out of order' '
 311         corrupt_midx_and_verify $MIDX_BYTE_OID_LOOKUP "\00" $objdir \
 312                 "oid lookup out of order"
 313 '
 314
 315 test_expect_success 'verify incorrect pack-int-id' '
 316         corrupt_midx_and_verify $MIDX_BYTE_PACK_INT_ID "\07" $objdir \
 317                 "bad pack-int-id"
 318 '
 319
 320 test_expect_success 'verify incorrect offset' '
 321         corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\377" $objdir \
 322                 "incorrect object offset"
 323 '
 324
 325 test_expect_success 'git-fsck incorrect offset' '
 326         corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\377" $objdir \
 327                 "incorrect object offset" \
 328                 "git -c core.multipackindex=true fsck"
 329 '
 330
 331 test_expect_success 'repack progress off for redirected stderr' '
 332         git multi-pack-index --object-dir=$objdir repack 2>err &&
 333         test_line_count = 0 err
 334 '
 335
 336 test_expect_success 'repack force progress on for stderr' '
 337         git multi-pack-index --object-dir=$objdir --progress repack 2>err &&
 338         test_file_not_empty err
 339 '
 340
 341 test_expect_success 'repack with the --no-progress option' '
 342         git multi-pack-index --object-dir=$objdir --no-progress repack 2>err &&
 343         test_line_count = 0 err
 344 '
 345
 346 test_expect_success 'repack removes multi-pack-index' '
 347         test_path_is_file $objdir/pack/multi-pack-index &&
 348         GIT_TEST_MULTI_PACK_INDEX=0 git repack -adf &&
 349         test_path_is_missing $objdir/pack/multi-pack-index
 350 '
 351
 352 compare_results_with_midx "after repack"
 353
 354 test_expect_success 'multi-pack-index and pack-bitmap' '
 355         git -c repack.writeBitmaps=true repack -ad &&
 356         git multi-pack-index write &&
 357         git rev-list --test-bitmap HEAD
 358 '
 359
 360 test_expect_success 'multi-pack-index and alternates' '
 361         git init --bare alt.git &&
 362         echo $(pwd)/alt.git/objects >.git/objects/info/alternates &&
 363         echo content1 >file1 &&
 364         altblob=$(GIT_DIR=alt.git git hash-object -w file1) &&
 365         git cat-file blob $altblob &&
 366         git rev-list --all
 367 '
 368
 369 compare_results_with_midx "with alternate (local midx)"
 370
 371 test_expect_success 'multi-pack-index in an alternate' '
 372         mv .git/objects/pack/* alt.git/objects/pack &&
 373         test_commit add_local_objects &&
 374         git repack --local &&
 375         git multi-pack-index write &&
 376         midx_read_expect 1 3 4 $objdir &&
 377         git reset --hard HEAD~1 &&
 378         rm -f .git/objects/pack/*
 379 '
 380
 381 compare_results_with_midx "with alternate (remote midx)"
 382
 383 # usage: corrupt_data <file> <pos> [<data>]
 384 corrupt_data () {
 385         file=$1
 386         pos=$2
 387         data="${3:-\0}"
 388         printf "$data" | dd of="$file" bs=1 seek="$pos" conv=notrunc
 389 }
 390
 391 # Force 64-bit offsets by manipulating the idx file.
 392 # This makes the IDX file _incorrect_ so be careful to clean up after!
 393 test_expect_success 'force some 64-bit offsets with pack-objects' '
 394         mkdir objects64 &&
 395         mkdir objects64/pack &&
 396         for i in $(test_seq 1 11)
 397         do
 398                 generate_objects 11
 399         done &&
 400         commit_and_list_objects &&
 401         pack64=$(git pack-objects --index-version=2,0x40 objects64/pack/test-64 <obj-list) &&
 402         idx64=objects64/pack/test-64-$pack64.idx &&
 403         chmod u+w $idx64 &&
 404         corrupt_data $idx64 $(test_oid idxoff) "\02" &&
 405         midx64=$(git multi-pack-index --object-dir=objects64 write) &&
 406         midx_read_expect 1 63 5 objects64 " large-offsets"
 407 '
 408
 409 test_expect_success 'verify multi-pack-index with 64-bit offsets' '
 410         git multi-pack-index verify --object-dir=objects64
 411 '
 412
 413 NUM_OBJECTS=63
 414 MIDX_OFFSET_OID_FANOUT=$((MIDX_OFFSET_PACKNAMES + 54))
 415 MIDX_OFFSET_OID_LOOKUP=$((MIDX_OFFSET_OID_FANOUT + 256 * $MIDX_OID_FANOUT_WIDTH))
 416 MIDX_OFFSET_OBJECT_OFFSETS=$(($MIDX_OFFSET_OID_LOOKUP + $NUM_OBJECTS * $HASH_LEN))
 417 MIDX_OFFSET_LARGE_OFFSETS=$(($MIDX_OFFSET_OBJECT_OFFSETS + $NUM_OBJECTS * $MIDX_OFFSET_WIDTH))
 418 MIDX_BYTE_LARGE_OFFSET=$(($MIDX_OFFSET_LARGE_OFFSETS + 3))
 419
 420 test_expect_success 'verify incorrect 64-bit offset' '
 421         corrupt_midx_and_verify $MIDX_BYTE_LARGE_OFFSET "\07" objects64 \
 422                 "incorrect object offset"
 423 '
 424
 425 test_expect_success 'setup expire tests' '
 426         mkdir dup &&
 427         (
 428                 cd dup &&
 429                 git init &&
 430                 test-tool genrandom "data" 4096 >large_file.txt &&
 431                 git update-index --add large_file.txt &&
 432                 for i in $(test_seq 1 20)
 433                 do
 434                         test_commit $i
 435                 done &&
 436                 git branch A HEAD &&
 437                 git branch B HEAD~8 &&
 438                 git branch C HEAD~13 &&
 439                 git branch D HEAD~16 &&
 440                 git branch E HEAD~18 &&
 441                 git pack-objects --revs .git/objects/pack/pack-A <<-EOF &&
 442                 refs/heads/A
 443                 ^refs/heads/B
 444                 EOF
 445                 git pack-objects --revs .git/objects/pack/pack-B <<-EOF &&
 446                 refs/heads/B
 447                 ^refs/heads/C
 448                 EOF
 449                 git pack-objects --revs .git/objects/pack/pack-C <<-EOF &&
 450                 refs/heads/C
 451                 ^refs/heads/D
 452                 EOF
 453                 git pack-objects --revs .git/objects/pack/pack-D <<-EOF &&
 454                 refs/heads/D
 455                 ^refs/heads/E
 456                 EOF
 457                 git pack-objects --revs .git/objects/pack/pack-E <<-EOF &&
 458                 refs/heads/E
 459                 EOF
 460                 git multi-pack-index write &&
 461                 cp -r .git/objects/pack .git/objects/pack-backup
 462         )
 463 '
 464
 465 test_expect_success 'expire does not remove any packs' '
 466         (
 467                 cd dup &&
 468                 ls .git/objects/pack >expect &&
 469                 git multi-pack-index expire &&
 470                 ls .git/objects/pack >actual &&
 471                 test_cmp expect actual
 472         )
 473 '
 474
 475 test_expect_success 'expire progress off for redirected stderr' '
 476         (
 477                 cd dup &&
 478                 git multi-pack-index expire 2>err &&
 479                 test_line_count = 0 err
 480         )
 481 '
 482
 483 test_expect_success 'expire force progress on for stderr' '
 484         (
 485                 cd dup &&
 486                 git multi-pack-index --progress expire 2>err &&
 487                 test_file_not_empty err
 488         )
 489 '
 490
 491 test_expect_success 'expire with the --no-progress option' '
 492         (
 493                 cd dup &&
 494                 git multi-pack-index --no-progress expire 2>err &&
 495                 test_line_count = 0 err
 496         )
 497 '
 498
 499 test_expect_success 'expire removes unreferenced packs' '
 500         (
 501                 cd dup &&
 502                 git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
 503                 refs/heads/A
 504                 ^refs/heads/C
 505                 EOF
 506                 git multi-pack-index write &&
 507                 ls .git/objects/pack | grep -v -e pack-[AB] >expect &&
 508                 git multi-pack-index expire &&
 509                 ls .git/objects/pack >actual &&
 510                 test_cmp expect actual &&
 511                 ls .git/objects/pack/ | grep idx >expect-idx &&
 512                 test-tool read-midx .git/objects | grep idx >actual-midx &&
 513                 test_cmp expect-idx actual-midx &&
 514                 git multi-pack-index verify &&
 515                 git fsck
 516         )
 517 '
 518
 519 test_expect_success 'repack with minimum size does not alter existing packs' '
 520         (
 521                 cd dup &&
 522                 rm -rf .git/objects/pack &&
 523                 mv .git/objects/pack-backup .git/objects/pack &&
 524                 touch -m -t 201901010000 .git/objects/pack/pack-D* &&
 525                 touch -m -t 201901010001 .git/objects/pack/pack-C* &&
 526                 touch -m -t 201901010002 .git/objects/pack/pack-B* &&
 527                 touch -m -t 201901010003 .git/objects/pack/pack-A* &&
 528                 ls .git/objects/pack >expect &&
 529                 MINSIZE=$(test-tool path-utils file-size .git/objects/pack/*pack | sort -n | head -n 1) &&
 530                 git multi-pack-index repack --batch-size=$MINSIZE &&
 531                 ls .git/objects/pack >actual &&
 532                 test_cmp expect actual
 533         )
 534 '
 535
 536 test_expect_success 'repack creates a new pack' '
 537         (
 538                 cd dup &&
 539                 ls .git/objects/pack/*idx >idx-list &&
 540                 test_line_count = 5 idx-list &&
 541                 THIRD_SMALLEST_SIZE=$(test-tool path-utils file-size .git/objects/pack/*pack | sort -n | head -n 3 | tail -n 1) &&
 542                 BATCH_SIZE=$(($THIRD_SMALLEST_SIZE + 1)) &&
 543                 git multi-pack-index repack --batch-size=$BATCH_SIZE &&
 544                 ls .git/objects/pack/*idx >idx-list &&
 545                 test_line_count = 6 idx-list &&
 546                 test-tool read-midx .git/objects | grep idx >midx-list &&
 547                 test_line_count = 6 midx-list
 548         )
 549 '
 550
 551 test_expect_success 'expire removes repacked packs' '
 552         (
 553                 cd dup &&
 554                 ls -al .git/objects/pack/*pack &&
 555                 ls -S .git/objects/pack/*pack | head -n 4 >expect &&
 556                 git multi-pack-index expire &&
 557                 ls -S .git/objects/pack/*pack >actual &&
 558                 test_cmp expect actual &&
 559                 test-tool read-midx .git/objects | grep idx >midx-list &&
 560                 test_line_count = 4 midx-list
 561         )
 562 '
 563
 564 test_expect_success 'expire works when adding new packs' '
 565         (
 566                 cd dup &&
 567                 git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
 568                 refs/heads/A
 569                 ^refs/heads/B
 570                 EOF
 571                 git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
 572                 refs/heads/B
 573                 ^refs/heads/C
 574                 EOF
 575                 git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
 576                 refs/heads/C
 577                 ^refs/heads/D
 578                 EOF
 579                 git multi-pack-index write &&
 580                 git pack-objects --revs .git/objects/pack/a-pack <<-EOF &&
 581                 refs/heads/D
 582                 ^refs/heads/E
 583                 EOF
 584                 git multi-pack-index write &&
 585                 git pack-objects --revs .git/objects/pack/z-pack <<-EOF &&
 586                 refs/heads/E
 587                 EOF
 588                 git multi-pack-index expire &&
 589                 ls .git/objects/pack/ | grep idx >expect &&
 590                 test-tool read-midx .git/objects | grep idx >actual &&
 591                 test_cmp expect actual &&
 592                 git multi-pack-index verify
 593         )
 594 '
 595
 596 test_expect_success 'expire respects .keep files' '
 597         (
 598                 cd dup &&
 599                 git pack-objects --revs .git/objects/pack/pack-all <<-EOF &&
 600                 refs/heads/A
 601                 EOF
 602                 git multi-pack-index write &&
 603                 PACKA=$(ls .git/objects/pack/a-pack*\.pack | sed s/\.pack\$//) &&
 604                 touch $PACKA.keep &&
 605                 git multi-pack-index expire &&
 606                 ls -S .git/objects/pack/a-pack* | grep $PACKA >a-pack-files &&
 607                 test_line_count = 3 a-pack-files &&
 608                 test-tool read-midx .git/objects | grep idx >midx-list &&
 609                 test_line_count = 2 midx-list
 610         )
 611 '
 612
 613 test_expect_success 'repack --batch-size=0 repacks everything' '
 614         (
 615                 cd dup &&
 616                 rm .git/objects/pack/*.keep &&
 617                 ls .git/objects/pack/*idx >idx-list &&
 618                 test_line_count = 2 idx-list &&
 619                 git multi-pack-index repack --batch-size=0 &&
 620                 ls .git/objects/pack/*idx >idx-list &&
 621                 test_line_count = 3 idx-list &&
 622                 test-tool read-midx .git/objects | grep idx >midx-list &&
 623                 test_line_count = 3 midx-list &&
 624                 git multi-pack-index expire &&
 625                 ls -al .git/objects/pack/*idx >idx-list &&
 626                 test_line_count = 1 idx-list &&
 627                 git multi-pack-index repack --batch-size=0 &&
 628                 ls -al .git/objects/pack/*idx >new-idx-list &&
 629                 test_cmp idx-list new-idx-list
 630         )
 631 '
 632
 633 test_done