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 $OBJECT_DIR >actual &&
  28         test_cmp expect actual
  29 }
  30
  31 test_expect_success 'setup' '
  32         test_oid_cache <<-EOF
  33         idxoff sha1:2999
  34         idxoff sha256:3739
  35
  36         packnameoff sha1:652
  37         packnameoff sha256:940
  38
  39         fanoutoff sha1:1
  40         fanoutoff sha256:3
  41         EOF
  42 '
  43
  44 test_expect_success "don't write midx with no packs" '
  45         test_must_fail git multi-pack-index --object-dir=. write &&
  46         test_path_is_missing pack/multi-pack-index
  47 '
  48
  49 test_expect_success "Warn if a midx contains no oid" '
  50         cp "$TEST_DIRECTORY"/t5319/no-objects.midx $objdir/pack/multi-pack-index &&
  51         test_must_fail git multi-pack-index verify &&
  52         rm $objdir/pack/multi-pack-index
  53 '
  54
  55 generate_objects () {
  56         i=$1
  57         iii=$(printf '%03i' $i)
  58         {
  59                 test-tool genrandom "bar" 200 &&
  60                 test-tool genrandom "baz $iii" 50
  61         } >wide_delta_$iii &&
  62         {
  63                 test-tool genrandom "foo"$i 100 &&
  64                 test-tool genrandom "foo"$(( $i + 1 )) 100 &&
  65                 test-tool genrandom "foo"$(( $i + 2 )) 100
  66         } >deep_delta_$iii &&
  67         {
  68                 echo $iii &&
  69                 test-tool genrandom "$iii" 8192
  70         } >file_$iii &&
  71         git update-index --add file_$iii deep_delta_$iii wide_delta_$iii
  72 }
  73
  74 commit_and_list_objects () {
  75         {
  76                 echo 101 &&
  77                 test-tool genrandom 100 8192;
  78         } >file_101 &&
  79         git update-index --add file_101 &&
  80         tree=$(git write-tree) &&
  81         commit=$(git commit-tree $tree -p HEAD</dev/null) &&
  82         {
  83                 echo $tree &&
  84                 git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\)        .*/\\1/"
  85         } >obj-list &&
  86         git reset --hard $commit
  87 }
  88
  89 test_expect_success 'create objects' '
  90         test_commit initial &&
  91         for i in $(test_seq 1 5)
  92         do
  93                 generate_objects $i
  94         done &&
  95         commit_and_list_objects
  96 '
  97
  98 test_expect_success 'write midx with one v1 pack' '
  99         pack=$(git pack-objects --index-version=1 $objdir/pack/test <obj-list) &&
 100         test_when_finished rm $objdir/pack/test-$pack.pack \
 101                 $objdir/pack/test-$pack.idx $objdir/pack/multi-pack-index &&
 102         git multi-pack-index --object-dir=$objdir write &&
 103         midx_read_expect 1 18 4 $objdir
 104 '
 105
 106 midx_git_two_modes () {
 107         git -c core.multiPackIndex=false $1 >expect &&
 108         git -c core.multiPackIndex=true $1 >actual &&
 109         if [ "$2" = "sorted" ]
 110         then
 111                 sort <expect >expect.sorted &&
 112                 mv expect.sorted expect &&
 113                 sort <actual >actual.sorted &&
 114                 mv actual.sorted actual
 115         fi &&
 116         test_cmp expect actual
 117 }
 118
 119 compare_results_with_midx () {
 120         MSG=$1
 121         test_expect_success "check normal git operations: $MSG" '
 122                 midx_git_two_modes "rev-list --objects --all" &&
 123                 midx_git_two_modes "log --raw" &&
 124                 midx_git_two_modes "count-objects --verbose" &&
 125                 midx_git_two_modes "cat-file --batch-all-objects --batch-check" &&
 126                 midx_git_two_modes "cat-file --batch-all-objects --batch-check --unordered" sorted
 127         '
 128 }
 129
 130 test_expect_success 'write midx with one v2 pack' '
 131         git pack-objects --index-version=2,0x40 $objdir/pack/test <obj-list &&
 132         git multi-pack-index --object-dir=$objdir write &&
 133         midx_read_expect 1 18 4 $objdir
 134 '
 135
 136 compare_results_with_midx "one v2 pack"
 137
 138 test_expect_success 'corrupt idx not opened' '
 139         idx=$(test-tool read-midx $objdir | grep "\.idx\$") &&
 140         mv $objdir/pack/$idx backup-$idx &&
 141         test_when_finished "mv backup-\$idx \$objdir/pack/\$idx" &&
 142
 143         # This is the minimum size for a sha-1 based .idx; this lets
 144         # us pass perfunctory tests, but anything that actually opens and reads
 145         # the idx file will complain.
 146         test_copy_bytes 1064 <backup-$idx >$objdir/pack/$idx &&
 147
 148         git -c core.multiPackIndex=true rev-list --objects --all 2>err &&
 149         test_must_be_empty err
 150 '
 151
 152 test_expect_success 'add more objects' '
 153         for i in $(test_seq 6 10)
 154         do
 155                 generate_objects $i
 156         done &&
 157         commit_and_list_objects
 158 '
 159
 160 test_expect_success 'write midx with two packs' '
 161         git pack-objects --index-version=1 $objdir/pack/test-2 <obj-list &&
 162         git multi-pack-index --object-dir=$objdir write &&
 163         midx_read_expect 2 34 4 $objdir
 164 '
 165
 166 compare_results_with_midx "two packs"
 167
 168 test_expect_success 'write progress off for redirected stderr' '
 169         git multi-pack-index --object-dir=$objdir write 2>err &&
 170         test_line_count = 0 err
 171 '
 172
 173 test_expect_success 'write force progress on for stderr' '
 174         git multi-pack-index --object-dir=$objdir --progress write 2>err &&
 175         test_file_not_empty err
 176 '
 177
 178 test_expect_success 'write with the --no-progress option' '
 179         git multi-pack-index --object-dir=$objdir --no-progress write 2>err &&
 180         test_line_count = 0 err
 181 '
 182
 183 test_expect_success 'add more packs' '
 184         for j in $(test_seq 11 20)
 185         do
 186                 generate_objects $j &&
 187                 commit_and_list_objects &&
 188                 git pack-objects --index-version=2 $objdir/pack/test-pack <obj-list
 189         done
 190 '
 191
 192 compare_results_with_midx "mixed mode (two packs + extra)"
 193
 194 test_expect_success 'write midx with twelve packs' '
 195         git multi-pack-index --object-dir=$objdir write &&
 196         midx_read_expect 12 74 4 $objdir
 197 '
 198
 199 compare_results_with_midx "twelve packs"
 200
 201 test_expect_success 'verify multi-pack-index success' '
 202         git multi-pack-index verify --object-dir=$objdir
 203 '
 204
 205 test_expect_success 'verify progress off for redirected stderr' '
 206         git multi-pack-index verify --object-dir=$objdir 2>err &&
 207         test_line_count = 0 err
 208 '
 209
 210 test_expect_success 'verify force progress on for stderr' '
 211         git multi-pack-index verify --object-dir=$objdir --progress 2>err &&
 212         test_file_not_empty err
 213 '
 214
 215 test_expect_success 'verify with the --no-progress option' '
 216         git multi-pack-index verify --object-dir=$objdir --no-progress 2>err &&
 217         test_line_count = 0 err
 218 '
 219
 220 # usage: corrupt_midx_and_verify <pos> <data> <objdir> <string>
 221 corrupt_midx_and_verify() {
 222         POS=$1 &&
 223         DATA="${2:-\0}" &&
 224         OBJDIR=$3 &&
 225         GREPSTR="$4" &&
 226         COMMAND="$5" &&
 227         if test -z "$COMMAND"
 228         then
 229                 COMMAND="git multi-pack-index verify --object-dir=$OBJDIR"
 230         fi &&
 231         FILE=$OBJDIR/pack/multi-pack-index &&
 232         chmod a+w $FILE &&
 233         test_when_finished mv midx-backup $FILE &&
 234         cp $FILE midx-backup &&
 235         printf "$DATA" | dd of="$FILE" bs=1 seek="$POS" conv=notrunc &&
 236         test_must_fail $COMMAND 2>test_err &&
 237         grep -v "^+" test_err >err &&
 238         test_i18ngrep "$GREPSTR" err
 239 }
 240
 241 test_expect_success 'verify bad signature' '
 242         corrupt_midx_and_verify 0 "\00" $objdir \
 243                 "multi-pack-index signature"
 244 '
 245
 246 HASH_LEN=$(test_oid rawsz)
 247 NUM_OBJECTS=74
 248 MIDX_BYTE_VERSION=4
 249 MIDX_BYTE_OID_VERSION=5
 250 MIDX_BYTE_CHUNK_COUNT=6
 251 MIDX_HEADER_SIZE=12
 252 MIDX_BYTE_CHUNK_ID=$MIDX_HEADER_SIZE
 253 MIDX_BYTE_CHUNK_OFFSET=$(($MIDX_HEADER_SIZE + 4))
 254 MIDX_NUM_CHUNKS=5
 255 MIDX_CHUNK_LOOKUP_WIDTH=12
 256 MIDX_OFFSET_PACKNAMES=$(($MIDX_HEADER_SIZE + \
 257                          $MIDX_NUM_CHUNKS * $MIDX_CHUNK_LOOKUP_WIDTH))
 258 MIDX_BYTE_PACKNAME_ORDER=$(($MIDX_OFFSET_PACKNAMES + 2))
 259 MIDX_OFFSET_OID_FANOUT=$(($MIDX_OFFSET_PACKNAMES + $(test_oid packnameoff)))
 260 MIDX_OID_FANOUT_WIDTH=4
 261 MIDX_BYTE_OID_FANOUT_ORDER=$((MIDX_OFFSET_OID_FANOUT + 250 * $MIDX_OID_FANOUT_WIDTH + $(test_oid fanoutoff)))
 262 MIDX_OFFSET_OID_LOOKUP=$(($MIDX_OFFSET_OID_FANOUT + 256 * $MIDX_OID_FANOUT_WIDTH))
 263 MIDX_BYTE_OID_LOOKUP=$(($MIDX_OFFSET_OID_LOOKUP + 16 * $HASH_LEN))
 264 MIDX_OFFSET_OBJECT_OFFSETS=$(($MIDX_OFFSET_OID_LOOKUP + $NUM_OBJECTS * $HASH_LEN))
 265 MIDX_OFFSET_WIDTH=8
 266 MIDX_BYTE_PACK_INT_ID=$(($MIDX_OFFSET_OBJECT_OFFSETS + 16 * $MIDX_OFFSET_WIDTH + 2))
 267 MIDX_BYTE_OFFSET=$(($MIDX_OFFSET_OBJECT_OFFSETS + 16 * $MIDX_OFFSET_WIDTH + 6))
 268
 269 test_expect_success 'verify bad version' '
 270         corrupt_midx_and_verify $MIDX_BYTE_VERSION "\00" $objdir \
 271                 "multi-pack-index version"
 272 '
 273
 274 test_expect_success 'verify bad OID version' '
 275         corrupt_midx_and_verify $MIDX_BYTE_OID_VERSION "\02" $objdir \
 276                 "hash version"
 277 '
 278
 279 test_expect_success 'verify truncated chunk count' '
 280         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\01" $objdir \
 281                 "missing required"
 282 '
 283
 284 test_expect_success 'verify extended chunk count' '
 285         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\07" $objdir \
 286                 "terminating multi-pack-index chunk id appears earlier than expected"
 287 '
 288
 289 test_expect_success 'verify missing required chunk' '
 290         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_ID "\01" $objdir \
 291                 "missing required"
 292 '
 293
 294 test_expect_success 'verify invalid chunk offset' '
 295         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_OFFSET "\01" $objdir \
 296                 "invalid chunk offset (too large)"
 297 '
 298
 299 test_expect_success 'verify packnames out of order' '
 300         corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "z" $objdir \
 301                 "pack names out of order"
 302 '
 303
 304 test_expect_success 'verify packnames out of order' '
 305         corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "a" $objdir \
 306                 "failed to load pack"
 307 '
 308
 309 test_expect_success 'verify oid fanout out of order' '
 310         corrupt_midx_and_verify $MIDX_BYTE_OID_FANOUT_ORDER "\01" $objdir \
 311                 "oid fanout out of order"
 312 '
 313
 314 test_expect_success 'verify oid lookup out of order' '
 315         corrupt_midx_and_verify $MIDX_BYTE_OID_LOOKUP "\00" $objdir \
 316                 "oid lookup out of order"
 317 '
 318
 319 test_expect_success 'verify incorrect pack-int-id' '
 320         corrupt_midx_and_verify $MIDX_BYTE_PACK_INT_ID "\07" $objdir \
 321                 "bad pack-int-id"
 322 '
 323
 324 test_expect_success 'verify incorrect offset' '
 325         corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\377" $objdir \
 326                 "incorrect object offset"
 327 '
 328
 329 test_expect_success 'git-fsck incorrect offset' '
 330         corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\377" $objdir \
 331                 "incorrect object offset" \
 332                 "git -c core.multipackindex=true fsck"
 333 '
 334
 335 test_expect_success 'repack progress off for redirected stderr' '
 336         git multi-pack-index --object-dir=$objdir repack 2>err &&
 337         test_line_count = 0 err
 338 '
 339
 340 test_expect_success 'repack force progress on for stderr' '
 341         git multi-pack-index --object-dir=$objdir --progress repack 2>err &&
 342         test_file_not_empty err
 343 '
 344
 345 test_expect_success 'repack with the --no-progress option' '
 346         git multi-pack-index --object-dir=$objdir --no-progress repack 2>err &&
 347         test_line_count = 0 err
 348 '
 349
 350 test_expect_success 'repack removes multi-pack-index' '
 351         test_path_is_file $objdir/pack/multi-pack-index &&
 352         GIT_TEST_MULTI_PACK_INDEX=0 git repack -adf &&
 353         test_path_is_missing $objdir/pack/multi-pack-index
 354 '
 355
 356 compare_results_with_midx "after repack"
 357
 358 test_expect_success 'multi-pack-index and pack-bitmap' '
 359         git -c repack.writeBitmaps=true repack -ad &&
 360         git multi-pack-index write &&
 361         git rev-list --test-bitmap HEAD
 362 '
 363
 364 test_expect_success 'multi-pack-index and alternates' '
 365         git init --bare alt.git &&
 366         echo $(pwd)/alt.git/objects >.git/objects/info/alternates &&
 367         echo content1 >file1 &&
 368         altblob=$(GIT_DIR=alt.git git hash-object -w file1) &&
 369         git cat-file blob $altblob &&
 370         git rev-list --all
 371 '
 372
 373 compare_results_with_midx "with alternate (local midx)"
 374
 375 test_expect_success 'multi-pack-index in an alternate' '
 376         mv .git/objects/pack/* alt.git/objects/pack &&
 377         test_commit add_local_objects &&
 378         git repack --local &&
 379         git multi-pack-index write &&
 380         midx_read_expect 1 3 4 $objdir &&
 381         git reset --hard HEAD~1 &&
 382         rm -f .git/objects/pack/*
 383 '
 384
 385 compare_results_with_midx "with alternate (remote midx)"
 386
 387 # usage: corrupt_data <file> <pos> [<data>]
 388 corrupt_data () {
 389         file=$1
 390         pos=$2
 391         data="${3:-\0}"
 392         printf "$data" | dd of="$file" bs=1 seek="$pos" conv=notrunc
 393 }
 394
 395 # Force 64-bit offsets by manipulating the idx file.
 396 # This makes the IDX file _incorrect_ so be careful to clean up after!
 397 test_expect_success 'force some 64-bit offsets with pack-objects' '
 398         mkdir objects64 &&
 399         mkdir objects64/pack &&
 400         for i in $(test_seq 1 11)
 401         do
 402                 generate_objects 11
 403         done &&
 404         commit_and_list_objects &&
 405         pack64=$(git pack-objects --index-version=2,0x40 objects64/pack/test-64 <obj-list) &&
 406         idx64=objects64/pack/test-64-$pack64.idx &&
 407         chmod u+w $idx64 &&
 408         corrupt_data $idx64 $(test_oid idxoff) "\02" &&
 409         midx64=$(git multi-pack-index --object-dir=objects64 write) &&
 410         midx_read_expect 1 63 5 objects64 " large-offsets"
 411 '
 412
 413 test_expect_success 'verify multi-pack-index with 64-bit offsets' '
 414         git multi-pack-index verify --object-dir=objects64
 415 '
 416
 417 NUM_OBJECTS=63
 418 MIDX_OFFSET_OID_FANOUT=$((MIDX_OFFSET_PACKNAMES + 54))
 419 MIDX_OFFSET_OID_LOOKUP=$((MIDX_OFFSET_OID_FANOUT + 256 * $MIDX_OID_FANOUT_WIDTH))
 420 MIDX_OFFSET_OBJECT_OFFSETS=$(($MIDX_OFFSET_OID_LOOKUP + $NUM_OBJECTS * $HASH_LEN))
 421 MIDX_OFFSET_LARGE_OFFSETS=$(($MIDX_OFFSET_OBJECT_OFFSETS + $NUM_OBJECTS * $MIDX_OFFSET_WIDTH))
 422 MIDX_BYTE_LARGE_OFFSET=$(($MIDX_OFFSET_LARGE_OFFSETS + 3))
 423
 424 test_expect_success 'verify incorrect 64-bit offset' '
 425         corrupt_midx_and_verify $MIDX_BYTE_LARGE_OFFSET "\07" objects64 \
 426                 "incorrect object offset"
 427 '
 428
 429 test_expect_success 'setup expire tests' '
 430         mkdir dup &&
 431         (
 432                 cd dup &&
 433                 git init &&
 434                 test-tool genrandom "data" 4096 >large_file.txt &&
 435                 git update-index --add large_file.txt &&
 436                 for i in $(test_seq 1 20)
 437                 do
 438                         test_commit $i
 439                 done &&
 440                 git branch A HEAD &&
 441                 git branch B HEAD~8 &&
 442                 git branch C HEAD~13 &&
 443                 git branch D HEAD~16 &&
 444                 git branch E HEAD~18 &&
 445                 git pack-objects --revs .git/objects/pack/pack-A <<-EOF &&
 446                 refs/heads/A
 447                 ^refs/heads/B
 448                 EOF
 449                 git pack-objects --revs .git/objects/pack/pack-B <<-EOF &&
 450                 refs/heads/B
 451                 ^refs/heads/C
 452                 EOF
 453                 git pack-objects --revs .git/objects/pack/pack-C <<-EOF &&
 454                 refs/heads/C
 455                 ^refs/heads/D
 456                 EOF
 457                 git pack-objects --revs .git/objects/pack/pack-D <<-EOF &&
 458                 refs/heads/D
 459                 ^refs/heads/E
 460                 EOF
 461                 git pack-objects --revs .git/objects/pack/pack-E <<-EOF &&
 462                 refs/heads/E
 463                 EOF
 464                 git multi-pack-index write &&
 465                 cp -r .git/objects/pack .git/objects/pack-backup
 466         )
 467 '
 468
 469 test_expect_success 'expire does not remove any packs' '
 470         (
 471                 cd dup &&
 472                 ls .git/objects/pack >expect &&
 473                 git multi-pack-index expire &&
 474                 ls .git/objects/pack >actual &&
 475                 test_cmp expect actual
 476         )
 477 '
 478
 479 test_expect_success 'expire progress off for redirected stderr' '
 480         (
 481                 cd dup &&
 482                 git multi-pack-index expire 2>err &&
 483                 test_line_count = 0 err
 484         )
 485 '
 486
 487 test_expect_success 'expire force progress on for stderr' '
 488         (
 489                 cd dup &&
 490                 git multi-pack-index --progress expire 2>err &&
 491                 test_file_not_empty err
 492         )
 493 '
 494
 495 test_expect_success 'expire with the --no-progress option' '
 496         (
 497                 cd dup &&
 498                 git multi-pack-index --no-progress expire 2>err &&
 499                 test_line_count = 0 err
 500         )
 501 '
 502
 503 test_expect_success 'expire removes unreferenced packs' '
 504         (
 505                 cd dup &&
 506                 git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
 507                 refs/heads/A
 508                 ^refs/heads/C
 509                 EOF
 510                 git multi-pack-index write &&
 511                 ls .git/objects/pack | grep -v -e pack-[AB] >expect &&
 512                 git multi-pack-index expire &&
 513                 ls .git/objects/pack >actual &&
 514                 test_cmp expect actual &&
 515                 ls .git/objects/pack/ | grep idx >expect-idx &&
 516                 test-tool read-midx .git/objects | grep idx >actual-midx &&
 517                 test_cmp expect-idx actual-midx &&
 518                 git multi-pack-index verify &&
 519                 git fsck
 520         )
 521 '
 522
 523 test_expect_success 'repack with minimum size does not alter existing packs' '
 524         (
 525                 cd dup &&
 526                 rm -rf .git/objects/pack &&
 527                 mv .git/objects/pack-backup .git/objects/pack &&
 528                 test-tool chmtime =-5 .git/objects/pack/pack-D* &&
 529                 test-tool chmtime =-4 .git/objects/pack/pack-C* &&
 530                 test-tool chmtime =-3 .git/objects/pack/pack-B* &&
 531                 test-tool chmtime =-2 .git/objects/pack/pack-A* &&
 532                 ls .git/objects/pack >expect &&
 533                 MINSIZE=$(test-tool path-utils file-size .git/objects/pack/*pack | sort -n | head -n 1) &&
 534                 git multi-pack-index repack --batch-size=$MINSIZE &&
 535                 ls .git/objects/pack >actual &&
 536                 test_cmp expect actual
 537         )
 538 '
 539
 540 test_expect_success 'repack respects repack.packKeptObjects=false' '
 541         test_when_finished rm -f dup/.git/objects/pack/*keep &&
 542         (
 543                 cd dup &&
 544                 ls .git/objects/pack/*idx >idx-list &&
 545                 test_line_count = 5 idx-list &&
 546                 ls .git/objects/pack/*.pack | sed "s/\.pack/.keep/" >keep-list &&
 547                 test_line_count = 5 keep-list &&
 548                 for keep in $(cat keep-list)
 549                 do
 550                         touch $keep || return 1
 551                 done &&
 552                 git multi-pack-index repack --batch-size=0 &&
 553                 ls .git/objects/pack/*idx >idx-list &&
 554                 test_line_count = 5 idx-list &&
 555                 test-tool read-midx .git/objects | grep idx >midx-list &&
 556                 test_line_count = 5 midx-list &&
 557                 THIRD_SMALLEST_SIZE=$(test-tool path-utils file-size .git/objects/pack/*pack | sort -n | sed -n 3p) &&
 558                 BATCH_SIZE=$((THIRD_SMALLEST_SIZE + 1)) &&
 559                 git multi-pack-index repack --batch-size=$BATCH_SIZE &&
 560                 ls .git/objects/pack/*idx >idx-list &&
 561                 test_line_count = 5 idx-list &&
 562                 test-tool read-midx .git/objects | grep idx >midx-list &&
 563                 test_line_count = 5 midx-list
 564         )
 565 '
 566
 567 test_expect_success 'repack creates a new pack' '
 568         (
 569                 cd dup &&
 570                 ls .git/objects/pack/*idx >idx-list &&
 571                 test_line_count = 5 idx-list &&
 572                 THIRD_SMALLEST_SIZE=$(test-tool path-utils file-size .git/objects/pack/*pack | sort -n | head -n 3 | tail -n 1) &&
 573                 BATCH_SIZE=$(($THIRD_SMALLEST_SIZE + 1)) &&
 574                 git multi-pack-index repack --batch-size=$BATCH_SIZE &&
 575                 ls .git/objects/pack/*idx >idx-list &&
 576                 test_line_count = 6 idx-list &&
 577                 test-tool read-midx .git/objects | grep idx >midx-list &&
 578                 test_line_count = 6 midx-list
 579         )
 580 '
 581
 582 test_expect_success 'expire removes repacked packs' '
 583         (
 584                 cd dup &&
 585                 ls -al .git/objects/pack/*pack &&
 586                 ls -S .git/objects/pack/*pack | head -n 4 >expect &&
 587                 git multi-pack-index expire &&
 588                 ls -S .git/objects/pack/*pack >actual &&
 589                 test_cmp expect actual &&
 590                 test-tool read-midx .git/objects | grep idx >midx-list &&
 591                 test_line_count = 4 midx-list
 592         )
 593 '
 594
 595 test_expect_success 'expire works when adding new packs' '
 596         (
 597                 cd dup &&
 598                 git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
 599                 refs/heads/A
 600                 ^refs/heads/B
 601                 EOF
 602                 git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
 603                 refs/heads/B
 604                 ^refs/heads/C
 605                 EOF
 606                 git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
 607                 refs/heads/C
 608                 ^refs/heads/D
 609                 EOF
 610                 git multi-pack-index write &&
 611                 git pack-objects --revs .git/objects/pack/a-pack <<-EOF &&
 612                 refs/heads/D
 613                 ^refs/heads/E
 614                 EOF
 615                 git multi-pack-index write &&
 616                 git pack-objects --revs .git/objects/pack/z-pack <<-EOF &&
 617                 refs/heads/E
 618                 EOF
 619                 git multi-pack-index expire &&
 620                 ls .git/objects/pack/ | grep idx >expect &&
 621                 test-tool read-midx .git/objects | grep idx >actual &&
 622                 test_cmp expect actual &&
 623                 git multi-pack-index verify
 624         )
 625 '
 626
 627 test_expect_success 'expire respects .keep files' '
 628         (
 629                 cd dup &&
 630                 git pack-objects --revs .git/objects/pack/pack-all <<-EOF &&
 631                 refs/heads/A
 632                 EOF
 633                 git multi-pack-index write &&
 634                 PACKA=$(ls .git/objects/pack/a-pack*\.pack | sed s/\.pack\$//) &&
 635                 touch $PACKA.keep &&
 636                 git multi-pack-index expire &&
 637                 ls -S .git/objects/pack/a-pack* | grep $PACKA >a-pack-files &&
 638                 test_line_count = 3 a-pack-files &&
 639                 test-tool read-midx .git/objects | grep idx >midx-list &&
 640                 test_line_count = 2 midx-list
 641         )
 642 '
 643
 644 test_expect_success 'repack --batch-size=0 repacks everything' '
 645         (
 646                 cd dup &&
 647                 rm .git/objects/pack/*.keep &&
 648                 ls .git/objects/pack/*idx >idx-list &&
 649                 test_line_count = 2 idx-list &&
 650                 git multi-pack-index repack --batch-size=0 &&
 651                 ls .git/objects/pack/*idx >idx-list &&
 652                 test_line_count = 3 idx-list &&
 653                 test-tool read-midx .git/objects | grep idx >midx-list &&
 654                 test_line_count = 3 midx-list &&
 655                 git multi-pack-index expire &&
 656                 ls -al .git/objects/pack/*idx >idx-list &&
 657                 test_line_count = 1 idx-list &&
 658                 git multi-pack-index repack --batch-size=0 &&
 659                 ls -al .git/objects/pack/*idx >new-idx-list &&
 660                 test_cmp idx-list new-idx-list
 661         )
 662 '
 663
 664 test_done