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