t/t5310-pack-bitmaps.sh

   1 #!/bin/sh
   2
   3 test_description='exercise basic bitmap functionality'
   4 . ./test-lib.sh
   5
   6 objpath () {
   7         echo ".git/objects/$(echo "$1" | sed -e 's|\(..\)|\1/|')"
   8 }
   9
  10 # show objects present in pack ($1 should be associated *.idx)
  11 list_packed_objects () {
  12         git show-index <"$1" | cut -d' ' -f2
  13 }
  14
  15 # has_any pattern-file content-file
  16 # tests whether content-file has any entry from pattern-file with entries being
  17 # whole lines.
  18 has_any () {
  19         grep -Ff "$1" "$2"
  20 }
  21
  22 test_expect_success 'setup repo with moderate-sized history' '
  23         for i in $(test_seq 1 10)
  24         do
  25                 test_commit $i
  26         done &&
  27         git checkout -b other HEAD~5 &&
  28         for i in $(test_seq 1 10)
  29         do
  30                 test_commit side-$i
  31         done &&
  32         git checkout master &&
  33         bitmaptip=$(git rev-parse master) &&
  34         blob=$(echo tagged-blob | git hash-object -w --stdin) &&
  35         git tag tagged-blob $blob &&
  36         git config repack.writebitmaps true &&
  37         git config pack.writebitmaphashcache true
  38 '
  39
  40 test_expect_success 'full repack creates bitmaps' '
  41         git repack -ad &&
  42         ls .git/objects/pack/ | grep bitmap >output &&
  43         test_line_count = 1 output
  44 '
  45
  46 test_expect_success 'rev-list --test-bitmap verifies bitmaps' '
  47         git rev-list --test-bitmap HEAD
  48 '
  49
  50 rev_list_tests() {
  51         state=$1
  52
  53         test_expect_success "counting commits via bitmap ($state)" '
  54                 git rev-list --count HEAD >expect &&
  55                 git rev-list --use-bitmap-index --count HEAD >actual &&
  56                 test_cmp expect actual
  57         '
  58
  59         test_expect_success "counting partial commits via bitmap ($state)" '
  60                 git rev-list --count HEAD~5..HEAD >expect &&
  61                 git rev-list --use-bitmap-index --count HEAD~5..HEAD >actual &&
  62                 test_cmp expect actual
  63         '
  64
  65         test_expect_success "counting commits with limit ($state)" '
  66                 git rev-list --count -n 1 HEAD >expect &&
  67                 git rev-list --use-bitmap-index --count -n 1 HEAD >actual &&
  68                 test_cmp expect actual
  69         '
  70
  71         test_expect_success "counting non-linear history ($state)" '
  72                 git rev-list --count other...master >expect &&
  73                 git rev-list --use-bitmap-index --count other...master >actual &&
  74                 test_cmp expect actual
  75         '
  76
  77         test_expect_success "counting commits with limiting ($state)" '
  78                 git rev-list --count HEAD -- 1.t >expect &&
  79                 git rev-list --use-bitmap-index --count HEAD -- 1.t >actual &&
  80                 test_cmp expect actual
  81         '
  82
  83         test_expect_success "enumerate --objects ($state)" '
  84                 git rev-list --objects --use-bitmap-index HEAD >tmp &&
  85                 cut -d" " -f1 <tmp >tmp2 &&
  86                 sort <tmp2 >actual &&
  87                 git rev-list --objects HEAD >tmp &&
  88                 cut -d" " -f1 <tmp >tmp2 &&
  89                 sort <tmp2 >expect &&
  90                 test_cmp expect actual
  91         '
  92
  93         test_expect_success "bitmap --objects handles non-commit objects ($state)" '
  94                 git rev-list --objects --use-bitmap-index HEAD tagged-blob >actual &&
  95                 grep $blob actual
  96         '
  97 }
  98
  99 rev_list_tests 'full bitmap'
 100
 101 test_expect_success 'clone from bitmapped repository' '
 102         git clone --no-local --bare . clone.git &&
 103         git rev-parse HEAD >expect &&
 104         git --git-dir=clone.git rev-parse HEAD >actual &&
 105         test_cmp expect actual
 106 '
 107
 108 test_expect_success 'setup further non-bitmapped commits' '
 109         for i in $(test_seq 1 10)
 110         do
 111                 test_commit further-$i
 112         done
 113 '
 114
 115 rev_list_tests 'partial bitmap'
 116
 117 test_expect_success 'fetch (partial bitmap)' '
 118         git --git-dir=clone.git fetch origin master:master &&
 119         git rev-parse HEAD >expect &&
 120         git --git-dir=clone.git rev-parse HEAD >actual &&
 121         test_cmp expect actual
 122 '
 123
 124 test_expect_success 'incremental repack fails when bitmaps are requested' '
 125         test_commit more-1 &&
 126         test_must_fail git repack -d 2>err &&
 127         test_i18ngrep "Incremental repacks are incompatible with bitmap" err
 128 '
 129
 130 test_expect_success 'incremental repack can disable bitmaps' '
 131         test_commit more-2 &&
 132         git repack -d --no-write-bitmap-index
 133 '
 134
 135 test_expect_success 'pack-objects respects --local (non-local loose)' '
 136         git init --bare alt.git &&
 137         echo $(pwd)/alt.git/objects >.git/objects/info/alternates &&
 138         echo content1 >file1 &&
 139         # non-local loose object which is not present in bitmapped pack
 140         altblob=$(GIT_DIR=alt.git git hash-object -w file1) &&
 141         # non-local loose object which is also present in bitmapped pack
 142         git cat-file blob $blob | GIT_DIR=alt.git git hash-object -w --stdin &&
 143         git add file1 &&
 144         test_tick &&
 145         git commit -m commit_file1 &&
 146         echo HEAD | git pack-objects --local --stdout --revs >1.pack &&
 147         git index-pack 1.pack &&
 148         list_packed_objects 1.idx >1.objects &&
 149         printf "%s\n" "$altblob" "$blob" >nonlocal-loose &&
 150         ! has_any nonlocal-loose 1.objects
 151 '
 152
 153 test_expect_success 'pack-objects respects --honor-pack-keep (local non-bitmapped pack)' '
 154         echo content2 >file2 &&
 155         blob2=$(git hash-object -w file2) &&
 156         git add file2 &&
 157         test_tick &&
 158         git commit -m commit_file2 &&
 159         printf "%s\n" "$blob2" "$bitmaptip" >keepobjects &&
 160         pack2=$(git pack-objects pack2 <keepobjects) &&
 161         mv pack2-$pack2.* .git/objects/pack/ &&
 162         >.git/objects/pack/pack2-$pack2.keep &&
 163         rm $(objpath $blob2) &&
 164         echo HEAD | git pack-objects --honor-pack-keep --stdout --revs >2a.pack &&
 165         git index-pack 2a.pack &&
 166         list_packed_objects 2a.idx >2a.objects &&
 167         ! has_any keepobjects 2a.objects
 168 '
 169
 170 test_expect_success 'pack-objects respects --local (non-local pack)' '
 171         mv .git/objects/pack/pack2-$pack2.* alt.git/objects/pack/ &&
 172         echo HEAD | git pack-objects --local --stdout --revs >2b.pack &&
 173         git index-pack 2b.pack &&
 174         list_packed_objects 2b.idx >2b.objects &&
 175         ! has_any keepobjects 2b.objects
 176 '
 177
 178 test_expect_success 'pack-objects respects --honor-pack-keep (local bitmapped pack)' '
 179         ls .git/objects/pack/ | grep bitmap >output &&
 180         test_line_count = 1 output &&
 181         packbitmap=$(basename $(cat output) .bitmap) &&
 182         list_packed_objects .git/objects/pack/$packbitmap.idx >packbitmap.objects &&
 183         test_when_finished "rm -f .git/objects/pack/$packbitmap.keep" &&
 184         >.git/objects/pack/$packbitmap.keep &&
 185         echo HEAD | git pack-objects --honor-pack-keep --stdout --revs >3a.pack &&
 186         git index-pack 3a.pack &&
 187         list_packed_objects 3a.idx >3a.objects &&
 188         ! has_any packbitmap.objects 3a.objects
 189 '
 190
 191 test_expect_success 'pack-objects respects --local (non-local bitmapped pack)' '
 192         mv .git/objects/pack/$packbitmap.* alt.git/objects/pack/ &&
 193         test_when_finished "mv alt.git/objects/pack/$packbitmap.* .git/objects/pack/" &&
 194         echo HEAD | git pack-objects --local --stdout --revs >3b.pack &&
 195         git index-pack 3b.pack &&
 196         list_packed_objects 3b.idx >3b.objects &&
 197         ! has_any packbitmap.objects 3b.objects
 198 '
 199
 200 test_expect_success 'pack-objects to file can use bitmap' '
 201         # make sure we still have 1 bitmap index from previous tests
 202         ls .git/objects/pack/ | grep bitmap >output &&
 203         test_line_count = 1 output &&
 204         # verify equivalent packs are generated with/without using bitmap index
 205         packasha1=$(git pack-objects --no-use-bitmap-index --all packa </dev/null) &&
 206         packbsha1=$(git pack-objects --use-bitmap-index --all packb </dev/null) &&
 207         list_packed_objects <packa-$packasha1.idx >packa.objects &&
 208         list_packed_objects <packb-$packbsha1.idx >packb.objects &&
 209         test_cmp packa.objects packb.objects
 210 '
 211
 212 test_expect_success 'full repack, reusing previous bitmaps' '
 213         git repack -ad &&
 214         ls .git/objects/pack/ | grep bitmap >output &&
 215         test_line_count = 1 output
 216 '
 217
 218 test_expect_success 'fetch (full bitmap)' '
 219         git --git-dir=clone.git fetch origin master:master &&
 220         git rev-parse HEAD >expect &&
 221         git --git-dir=clone.git rev-parse HEAD >actual &&
 222         test_cmp expect actual
 223 '
 224
 225 test_expect_success 'create objects for missing-HAVE tests' '
 226         blob=$(echo "missing have" | git hash-object -w --stdin) &&
 227         tree=$(printf "100644 blob $blob\tfile\n" | git mktree) &&
 228         parent=$(echo parent | git commit-tree $tree) &&
 229         commit=$(echo commit | git commit-tree $tree -p $parent) &&
 230         cat >revs <<-EOF
 231         HEAD
 232         ^HEAD^
 233         ^$commit
 234         EOF
 235 '
 236
 237 test_expect_success 'pack-objects respects --incremental' '
 238         cat >revs2 <<-EOF &&
 239         HEAD
 240         $commit
 241         EOF
 242         git pack-objects --incremental --stdout --revs <revs2 >4.pack &&
 243         git index-pack 4.pack &&
 244         list_packed_objects 4.idx >4.objects &&
 245         test_line_count = 4 4.objects &&
 246         git rev-list --objects $commit >revlist &&
 247         cut -d" " -f1 revlist |sort >objects &&
 248         test_cmp 4.objects objects
 249 '
 250
 251 test_expect_success 'pack with missing blob' '
 252         rm $(objpath $blob) &&
 253         git pack-objects --stdout --revs <revs >/dev/null
 254 '
 255
 256 test_expect_success 'pack with missing tree' '
 257         rm $(objpath $tree) &&
 258         git pack-objects --stdout --revs <revs >/dev/null
 259 '
 260
 261 test_expect_success 'pack with missing parent' '
 262         rm $(objpath $parent) &&
 263         git pack-objects --stdout --revs <revs >/dev/null
 264 '
 265
 266 test_expect_success JGIT 'we can read jgit bitmaps' '
 267         git clone --bare . compat-jgit.git &&
 268         (
 269                 cd compat-jgit.git &&
 270                 rm -f .git/objects/pack/*.bitmap &&
 271                 jgit gc &&
 272                 git rev-list --test-bitmap HEAD
 273         )
 274 '
 275
 276 test_expect_success JGIT 'jgit can read our bitmaps' '
 277         git clone --bare . compat-us.git &&
 278         (
 279                 cd compat-us.git &&
 280                 git repack -adb &&
 281                 # jgit gc will barf if it does not like our bitmaps
 282                 jgit gc
 283         )
 284 '
 285
 286 test_expect_success 'splitting packs does not generate bogus bitmaps' '
 287         test-tool genrandom foo $((1024 * 1024)) >rand &&
 288         git add rand &&
 289         git commit -m "commit with big file" &&
 290         git -c pack.packSizeLimit=500k repack -adb &&
 291         git init --bare no-bitmaps.git &&
 292         git -C no-bitmaps.git fetch .. HEAD
 293 '
 294
 295 test_expect_success 'set up reusable pack' '
 296         rm -f .git/objects/pack/*.keep &&
 297         git repack -adb &&
 298         reusable_pack () {
 299                 git for-each-ref --format="%(objectname)" |
 300                 git pack-objects --delta-base-offset --revs --stdout "$@"
 301         }
 302 '
 303
 304 test_expect_success 'pack reuse respects --honor-pack-keep' '
 305         test_when_finished "rm -f .git/objects/pack/*.keep" &&
 306         for i in .git/objects/pack/*.pack
 307         do
 308                 >${i%.pack}.keep
 309         done &&
 310         reusable_pack --honor-pack-keep >empty.pack &&
 311         git index-pack empty.pack &&
 312         >expect &&
 313         git show-index <empty.idx >actual &&
 314         test_cmp expect actual
 315 '
 316
 317 test_expect_success 'pack reuse respects --local' '
 318         mv .git/objects/pack/* alt.git/objects/pack/ &&
 319         test_when_finished "mv alt.git/objects/pack/* .git/objects/pack/" &&
 320         reusable_pack --local >empty.pack &&
 321         git index-pack empty.pack &&
 322         >expect &&
 323         git show-index <empty.idx >actual &&
 324         test_cmp expect actual
 325 '
 326
 327 test_expect_success 'pack reuse respects --incremental' '
 328         reusable_pack --incremental >empty.pack &&
 329         git index-pack empty.pack &&
 330         >expect &&
 331         git show-index <empty.idx >actual &&
 332         test_cmp expect actual
 333 '
 334
 335 test_expect_success 'truncated bitmap fails gracefully' '
 336         git repack -ad &&
 337         git rev-list --use-bitmap-index --count --all >expect &&
 338         bitmap=$(ls .git/objects/pack/*.bitmap) &&
 339         test_when_finished "rm -f $bitmap" &&
 340         head -c 512 <$bitmap >$bitmap.tmp &&
 341         mv -f $bitmap.tmp $bitmap &&
 342         git rev-list --use-bitmap-index --count --all >actual 2>stderr &&
 343         test_cmp expect actual &&
 344         test_i18ngrep corrupt stderr
 345 '
 346
 347 test_done