t/t7700-repack.sh

   1 #!/bin/sh
   2
   3 test_description='git repack works correctly'
   4
   5 . ./test-lib.sh
   6
   7 test_expect_success 'objects in packs marked .keep are not repacked' '
   8         echo content1 > file1 &&
   9         echo content2 > file2 &&
  10         git add . &&
  11         test_tick &&
  12         git commit -m initial_commit &&
  13         # Create two packs
  14         # The first pack will contain all of the objects except one
  15         git rev-list --objects --all | grep -v file2 |
  16                 git pack-objects pack > /dev/null &&
  17         # The second pack will contain the excluded object
  18         packsha1=$(git rev-list --objects --all | grep file2 |
  19                 git pack-objects pack) &&
  20         >pack-$packsha1.keep &&
  21         objsha1=$(git verify-pack -v pack-$packsha1.idx | head -n 1 |
  22                 sed -e "s/^\([0-9a-f]\{40\}\).*/\1/") &&
  23         mv pack-* .git/objects/pack/ &&
  24         git repack --no-pack-kept-objects -A -d -l &&
  25         git prune-packed &&
  26         for p in .git/objects/pack/*.idx; do
  27                 idx=$(basename $p)
  28                 test "pack-$packsha1.idx" = "$idx" && continue
  29                 if git verify-pack -v $p | egrep "^$objsha1"; then
  30                         found_duplicate_object=1
  31                         echo "DUPLICATE OBJECT FOUND"
  32                         break
  33                 fi
  34         done &&
  35         test -z "$found_duplicate_object"
  36 '
  37
  38 test_expect_success 'writing bitmaps can duplicate .keep objects' '
  39         # build on $objsha1, $packsha1, and .keep state from previous
  40         git repack -Adl &&
  41         test_when_finished "found_duplicate_object=" &&
  42         for p in .git/objects/pack/*.idx; do
  43                 idx=$(basename $p)
  44                 test "pack-$packsha1.idx" = "$idx" && continue
  45                 if git verify-pack -v $p | egrep "^$objsha1"; then
  46                         found_duplicate_object=1
  47                         echo "DUPLICATE OBJECT FOUND"
  48                         break
  49                 fi
  50         done &&
  51         test "$found_duplicate_object" = 1
  52 '
  53
  54 test_expect_success 'loose objects in alternate ODB are not repacked' '
  55         mkdir alt_objects &&
  56         echo `pwd`/alt_objects > .git/objects/info/alternates &&
  57         echo content3 > file3 &&
  58         objsha1=$(GIT_OBJECT_DIRECTORY=alt_objects git hash-object -w file3) &&
  59         git add file3 &&
  60         test_tick &&
  61         git commit -m commit_file3 &&
  62         git repack -a -d -l &&
  63         git prune-packed &&
  64         for p in .git/objects/pack/*.idx; do
  65                 if git verify-pack -v $p | egrep "^$objsha1"; then
  66                         found_duplicate_object=1
  67                         echo "DUPLICATE OBJECT FOUND"
  68                         break
  69                 fi
  70         done &&
  71         test -z "$found_duplicate_object"
  72 '
  73
  74 test_expect_success 'packed obs in alt ODB are repacked even when local repo is packless' '
  75         mkdir alt_objects/pack &&
  76         mv .git/objects/pack/* alt_objects/pack &&
  77         git repack -a &&
  78         myidx=$(ls -1 .git/objects/pack/*.idx) &&
  79         test -f "$myidx" &&
  80         for p in alt_objects/pack/*.idx; do
  81                 git verify-pack -v $p | sed -n -e "/^[0-9a-f]\{40\}/p"
  82         done | while read sha1 rest; do
  83                 if ! ( git verify-pack -v $myidx | grep "^$sha1" ); then
  84                         echo "Missing object in local pack: $sha1"
  85                         return 1
  86                 fi
  87         done
  88 '
  89
  90 test_expect_success 'packed obs in alt ODB are repacked when local repo has packs' '
  91         rm -f .git/objects/pack/* &&
  92         echo new_content >> file1 &&
  93         git add file1 &&
  94         test_tick &&
  95         git commit -m more_content &&
  96         git repack &&
  97         git repack -a -d &&
  98         myidx=$(ls -1 .git/objects/pack/*.idx) &&
  99         test -f "$myidx" &&
 100         for p in alt_objects/pack/*.idx; do
 101                 git verify-pack -v $p | sed -n -e "/^[0-9a-f]\{40\}/p"
 102         done | while read sha1 rest; do
 103                 if ! ( git verify-pack -v $myidx | grep "^$sha1" ); then
 104                         echo "Missing object in local pack: $sha1"
 105                         return 1
 106                 fi
 107         done
 108 '
 109
 110 test_expect_success 'packed obs in alternate ODB kept pack are repacked' '
 111         # swap the .keep so the commit object is in the pack with .keep
 112         for p in alt_objects/pack/*.pack
 113         do
 114                 base_name=$(basename $p .pack) &&
 115                 if test -f alt_objects/pack/$base_name.keep
 116                 then
 117                         rm alt_objects/pack/$base_name.keep
 118                 else
 119                         touch alt_objects/pack/$base_name.keep
 120                 fi
 121         done &&
 122         git repack -a -d &&
 123         myidx=$(ls -1 .git/objects/pack/*.idx) &&
 124         test -f "$myidx" &&
 125         for p in alt_objects/pack/*.idx; do
 126                 git verify-pack -v $p | sed -n -e "/^[0-9a-f]\{40\}/p"
 127         done | while read sha1 rest; do
 128                 if ! ( git verify-pack -v $myidx | grep "^$sha1" ); then
 129                         echo "Missing object in local pack: $sha1"
 130                         return 1
 131                 fi
 132         done
 133 '
 134
 135 test_expect_success 'packed unreachable obs in alternate ODB are not loosened' '
 136         rm -f alt_objects/pack/*.keep &&
 137         mv .git/objects/pack/* alt_objects/pack/ &&
 138         csha1=$(git rev-parse HEAD^{commit}) &&
 139         git reset --hard HEAD^ &&
 140         test_tick &&
 141         git reflog expire --expire=$test_tick --expire-unreachable=$test_tick --all &&
 142         # The pack-objects call on the next line is equivalent to
 143         # git repack -A -d without the call to prune-packed
 144         git pack-objects --honor-pack-keep --non-empty --all --reflog \
 145             --unpack-unreachable </dev/null pack &&
 146         rm -f .git/objects/pack/* &&
 147         mv pack-* .git/objects/pack/ &&
 148         test 0 = $(git verify-pack -v -- .git/objects/pack/*.idx |
 149                 egrep "^$csha1 " | sort | uniq | wc -l) &&
 150         echo > .git/objects/info/alternates &&
 151         test_must_fail git show $csha1
 152 '
 153
 154 test_expect_success 'local packed unreachable obs that exist in alternate ODB are not loosened' '
 155         echo `pwd`/alt_objects > .git/objects/info/alternates &&
 156         echo "$csha1" | git pack-objects --non-empty --all --reflog pack &&
 157         rm -f .git/objects/pack/* &&
 158         mv pack-* .git/objects/pack/ &&
 159         # The pack-objects call on the next line is equivalent to
 160         # git repack -A -d without the call to prune-packed
 161         git pack-objects --honor-pack-keep --non-empty --all --reflog \
 162             --unpack-unreachable </dev/null pack &&
 163         rm -f .git/objects/pack/* &&
 164         mv pack-* .git/objects/pack/ &&
 165         test 0 = $(git verify-pack -v -- .git/objects/pack/*.idx |
 166                 egrep "^$csha1 " | sort | uniq | wc -l) &&
 167         echo > .git/objects/info/alternates &&
 168         test_must_fail git show $csha1
 169 '
 170
 171 test_expect_success 'objects made unreachable by grafts only are kept' '
 172         test_tick &&
 173         git commit --allow-empty -m "commit 4" &&
 174         H0=$(git rev-parse HEAD) &&
 175         H1=$(git rev-parse HEAD^) &&
 176         H2=$(git rev-parse HEAD^^) &&
 177         echo "$H0 $H2" > .git/info/grafts &&
 178         git reflog expire --expire=$test_tick --expire-unreachable=$test_tick --all &&
 179         git repack -a -d &&
 180         git cat-file -t $H1
 181         '
 182
 183 test_done
 184