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