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 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 ($state)" '
  45                 git rev-list --count HEAD~5..HEAD >expect &&
  46                 git rev-list --use-bitmap-index --count HEAD~5..HEAD >actual &&
  47                 test_cmp expect actual
  48         '
  49
  50         test_expect_success "counting non-linear history ($state)" '
  51                 git rev-list --count other...master >expect &&
  52                 git rev-list --use-bitmap-index --count other...master >actual &&
  53                 test_cmp expect actual
  54         '
  55
  56         test_expect_success "counting commits with limiting ($state)" '
  57                 git rev-list --count HEAD -- 1.t >expect &&
  58                 git rev-list --use-bitmap-index --count HEAD -- 1.t >actual &&
  59                 test_cmp expect actual
  60         '
  61
  62         test_expect_success "enumerate --objects ($state)" '
  63                 git rev-list --objects --use-bitmap-index HEAD >tmp &&
  64                 cut -d" " -f1 <tmp >tmp2 &&
  65                 sort <tmp2 >actual &&
  66                 git rev-list --objects HEAD >tmp &&
  67                 cut -d" " -f1 <tmp >tmp2 &&
  68                 sort <tmp2 >expect &&
  69                 test_cmp expect actual
  70         '
  71
  72         test_expect_success "bitmap --objects handles non-commit objects ($state)" '
  73                 git rev-list --objects --use-bitmap-index HEAD tagged-blob >actual &&
  74                 grep $blob actual
  75         '
  76 }
  77
  78 rev_list_tests 'full bitmap'
  79
  80 test_expect_success 'clone from bitmapped repository' '
  81         git clone --no-local --bare . clone.git &&
  82         git rev-parse HEAD >expect &&
  83         git --git-dir=clone.git rev-parse HEAD >actual &&
  84         test_cmp expect actual
  85 '
  86
  87 test_expect_success 'setup further non-bitmapped commits' '
  88         for i in $(test_seq 1 10); do
  89                 test_commit further-$i
  90         done
  91 '
  92
  93 rev_list_tests 'partial bitmap'
  94
  95 test_expect_success 'fetch (partial bitmap)' '
  96         git --git-dir=clone.git fetch origin master:master &&
  97         git rev-parse HEAD >expect &&
  98         git --git-dir=clone.git rev-parse HEAD >actual &&
  99         test_cmp expect actual
 100 '
 101
 102 test_expect_success 'incremental repack cannot create bitmaps' '
 103         test_commit more-1 &&
 104         find .git/objects/pack -name "*.bitmap" >expect &&
 105         git repack -d &&
 106         find .git/objects/pack -name "*.bitmap" >actual &&
 107         test_cmp expect actual
 108 '
 109
 110 test_expect_success 'incremental repack can disable bitmaps' '
 111         test_commit more-2 &&
 112         git repack -d --no-write-bitmap-index
 113 '
 114
 115 test_expect_success 'full repack, reusing previous bitmaps' '
 116         git repack -ad &&
 117         ls .git/objects/pack/ | grep bitmap >output &&
 118         test_line_count = 1 output
 119 '
 120
 121 test_expect_success 'fetch (full bitmap)' '
 122         git --git-dir=clone.git fetch origin master:master &&
 123         git rev-parse HEAD >expect &&
 124         git --git-dir=clone.git rev-parse HEAD >actual &&
 125         test_cmp expect actual
 126 '
 127
 128 test_expect_success 'create objects for missing-HAVE tests' '
 129         blob=$(echo "missing have" | git hash-object -w --stdin) &&
 130         tree=$(printf "100644 blob $blob\tfile\n" | git mktree) &&
 131         parent=$(echo parent | git commit-tree $tree) &&
 132         commit=$(echo commit | git commit-tree $tree -p $parent) &&
 133         cat >revs <<-EOF
 134         HEAD
 135         ^HEAD^
 136         ^$commit
 137         EOF
 138 '
 139
 140 test_expect_success 'pack with missing blob' '
 141         rm $(objpath $blob) &&
 142         git pack-objects --stdout --revs <revs >/dev/null
 143 '
 144
 145 test_expect_success 'pack with missing tree' '
 146         rm $(objpath $tree) &&
 147         git pack-objects --stdout --revs <revs >/dev/null
 148 '
 149
 150 test_expect_success 'pack with missing parent' '
 151         rm $(objpath $parent) &&
 152         git pack-objects --stdout --revs <revs >/dev/null
 153 '
 154
 155 test_lazy_prereq JGIT '
 156         type jgit
 157 '
 158
 159 test_expect_success JGIT 'we can read jgit bitmaps' '
 160         git clone . compat-jgit &&
 161         (
 162                 cd compat-jgit &&
 163                 rm -f .git/objects/pack/*.bitmap &&
 164                 jgit gc &&
 165                 git rev-list --test-bitmap HEAD
 166         )
 167 '
 168
 169 test_expect_success JGIT 'jgit can read our bitmaps' '
 170         git clone . compat-us &&
 171         (
 172                 cd compat-us &&
 173                 git repack -adb &&
 174                 # jgit gc will barf if it does not like our bitmaps
 175                 jgit gc
 176         )
 177 '
 178
 179 test_expect_success 'splitting packs does not generate bogus bitmaps' '
 180         test-genrandom foo $((1024 * 1024)) >rand &&
 181         git add rand &&
 182         git commit -m "commit with big file" &&
 183         git -c pack.packSizeLimit=500k repack -adb &&
 184         git init --bare no-bitmaps.git &&
 185         git -C no-bitmaps.git fetch .. HEAD
 186 '
 187
 188 test_done