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 test_expect_success 'setup repo with moderate-sized history' '
  11         for i in $(test_seq 1 10); do
  12                 test_commit $i
  13         done &&
  14         git checkout -b other HEAD~5 &&
  15         for i in $(test_seq 1 10); do
  16                 test_commit side-$i
  17         done &&
  18         git checkout master &&
  19         blob=$(echo tagged-blob | git hash-object -w --stdin) &&
  20         git tag tagged-blob $blob &&
  21         git config repack.writebitmaps true &&
  22         git config pack.writebitmaphashcache true
  23 '
  24
  25 test_expect_success 'full repack creates bitmaps' '
  26         git repack -ad &&
  27         ls .git/objects/pack/ | grep bitmap >output &&
  28         test_line_count = 1 output
  29 '
  30
  31 test_expect_success 'rev-list --test-bitmap verifies bitmaps' '
  32         git rev-list --test-bitmap HEAD
  33 '
  34
  35 rev_list_tests() {
  36         state=$1
  37
  38         test_expect_success "counting commits via bitmap ($state)" '
  39                 git rev-list --count HEAD >expect &&
  40                 git rev-list --use-bitmap-index --count HEAD >actual &&
  41                 test_cmp expect actual
  42         '
  43
  44         test_expect_success "counting partial commits via bitmap ($state)" '
  45                 git rev-list --count HEAD~5..HEAD >expect &&
  46                 git rev-list --use-bitmap-index --count HEAD~5..HEAD >actual &&
  47                 test_cmp expect actual
  48         '
  49
  50         test_expect_success "counting commits with limit ($state)" '
  51                 git rev-list --count -n 1 HEAD >expect &&
  52                 git rev-list --use-bitmap-index --count -n 1 HEAD >actual &&
  53                 test_cmp expect actual
  54         '
  55
  56         test_expect_success "counting non-linear history ($state)" '
  57                 git rev-list --count other...master >expect &&
  58                 git rev-list --use-bitmap-index --count other...master >actual &&
  59                 test_cmp expect actual
  60         '
  61
  62         test_expect_success "counting commits with limiting ($state)" '
  63                 git rev-list --count HEAD -- 1.t >expect &&
  64                 git rev-list --use-bitmap-index --count HEAD -- 1.t >actual &&
  65                 test_cmp expect actual
  66         '
  67
  68         test_expect_success "enumerate --objects ($state)" '
  69                 git rev-list --objects --use-bitmap-index HEAD >tmp &&
  70                 cut -d" " -f1 <tmp >tmp2 &&
  71                 sort <tmp2 >actual &&
  72                 git rev-list --objects HEAD >tmp &&
  73                 cut -d" " -f1 <tmp >tmp2 &&
  74                 sort <tmp2 >expect &&
  75                 test_cmp expect actual
  76         '
  77
  78         test_expect_success "bitmap --objects handles non-commit objects ($state)" '
  79                 git rev-list --objects --use-bitmap-index HEAD tagged-blob >actual &&
  80                 grep $blob actual
  81         '
  82 }
  83
  84 rev_list_tests 'full bitmap'
  85
  86 test_expect_success 'clone from bitmapped repository' '
  87         git clone --no-local --bare . clone.git &&
  88         git rev-parse HEAD >expect &&
  89         git --git-dir=clone.git rev-parse HEAD >actual &&
  90         test_cmp expect actual
  91 '
  92
  93 test_expect_success 'setup further non-bitmapped commits' '
  94         for i in $(test_seq 1 10); do
  95                 test_commit further-$i
  96         done
  97 '
  98
  99 rev_list_tests 'partial bitmap'
 100
 101 test_expect_success 'fetch (partial bitmap)' '
 102         git --git-dir=clone.git fetch origin master:master &&
 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 'incremental repack cannot create bitmaps' '
 109         test_commit more-1 &&
 110         find .git/objects/pack -name "*.bitmap" >expect &&
 111         git repack -d &&
 112         find .git/objects/pack -name "*.bitmap" >actual &&
 113         test_cmp expect actual
 114 '
 115
 116 test_expect_success 'incremental repack can disable bitmaps' '
 117         test_commit more-2 &&
 118         git repack -d --no-write-bitmap-index
 119 '
 120
 121 test_expect_success 'full repack, reusing previous bitmaps' '
 122         git repack -ad &&
 123         ls .git/objects/pack/ | grep bitmap >output &&
 124         test_line_count = 1 output
 125 '
 126
 127 test_expect_success 'fetch (full bitmap)' '
 128         git --git-dir=clone.git fetch origin master:master &&
 129         git rev-parse HEAD >expect &&
 130         git --git-dir=clone.git rev-parse HEAD >actual &&
 131         test_cmp expect actual
 132 '
 133
 134 test_expect_success 'create objects for missing-HAVE tests' '
 135         blob=$(echo "missing have" | git hash-object -w --stdin) &&
 136         tree=$(printf "100644 blob $blob\tfile\n" | git mktree) &&
 137         parent=$(echo parent | git commit-tree $tree) &&
 138         commit=$(echo commit | git commit-tree $tree -p $parent) &&
 139         cat >revs <<-EOF
 140         HEAD
 141         ^HEAD^
 142         ^$commit
 143         EOF
 144 '
 145
 146 test_expect_success 'pack with missing blob' '
 147         rm $(objpath $blob) &&
 148         git pack-objects --stdout --revs <revs >/dev/null
 149 '
 150
 151 test_expect_success 'pack with missing tree' '
 152         rm $(objpath $tree) &&
 153         git pack-objects --stdout --revs <revs >/dev/null
 154 '
 155
 156 test_expect_success 'pack with missing parent' '
 157         rm $(objpath $parent) &&
 158         git pack-objects --stdout --revs <revs >/dev/null
 159 '
 160
 161 test_lazy_prereq JGIT '
 162         type jgit
 163 '
 164
 165 test_expect_success JGIT 'we can read jgit bitmaps' '
 166         git clone . compat-jgit &&
 167         (
 168                 cd compat-jgit &&
 169                 rm -f .git/objects/pack/*.bitmap &&
 170                 jgit gc &&
 171                 git rev-list --test-bitmap HEAD
 172         )
 173 '
 174
 175 test_expect_success JGIT 'jgit can read our bitmaps' '
 176         git clone . compat-us &&
 177         (
 178                 cd compat-us &&
 179                 git repack -adb &&
 180                 # jgit gc will barf if it does not like our bitmaps
 181                 jgit gc
 182         )
 183 '
 184
 185 test_expect_success 'splitting packs does not generate bogus bitmaps' '
 186         test-genrandom foo $((1024 * 1024)) >rand &&
 187         git add rand &&
 188         git commit -m "commit with big file" &&
 189         git -c pack.packSizeLimit=500k repack -adb &&
 190         git init --bare no-bitmaps.git &&
 191         git -C no-bitmaps.git fetch .. HEAD
 192 '
 193
 194 test_done