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 -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 via command-line can duplicate .keep objects' '
  39         # build on $objsha1, $packsha1, and .keep state from previous
  40         git repack -Adbl &&
  41         test_when_finished "found_duplicate_object=" &&
  42         for p in .git/objects/pack/*.idx; do
  43                 idx=$(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 'writing bitmaps via config can duplicate .keep objects' '
  55         # build on $objsha1, $packsha1, and .keep state from previous
  56         git -c repack.writebitmaps=true repack -Adl &&
  57         test_when_finished "found_duplicate_object=" &&
  58         for p in .git/objects/pack/*.idx; do
  59                 idx=$(basename $p)
  60                 test "pack-$packsha1.idx" = "$idx" && continue
  61                 if git verify-pack -v $p | egrep "^$objsha1"; then
  62                         found_duplicate_object=1
  63                         echo "DUPLICATE OBJECT FOUND"
  64                         break
  65                 fi
  66         done &&
  67         test "$found_duplicate_object" = 1
  68 '
  69
  70 test_expect_success 'loose objects in alternate ODB are not repacked' '
  71         mkdir alt_objects &&
  72         echo $(pwd)/alt_objects > .git/objects/info/alternates &&
  73         echo content3 > file3 &&
  74         objsha1=$(GIT_OBJECT_DIRECTORY=alt_objects git hash-object -w file3) &&
  75         git add file3 &&
  76         test_tick &&
  77         git commit -m commit_file3 &&
  78         git repack -a -d -l &&
  79         git prune-packed &&
  80         for p in .git/objects/pack/*.idx; do
  81                 if git verify-pack -v $p | egrep "^$objsha1"; then
  82                         found_duplicate_object=1
  83                         echo "DUPLICATE OBJECT FOUND"
  84                         break
  85                 fi
  86         done &&
  87         test -z "$found_duplicate_object"
  88 '
  89
  90 test_expect_success 'packed obs in alt ODB are repacked even when local repo is packless' '
  91         mkdir alt_objects/pack &&
  92         mv .git/objects/pack/* alt_objects/pack &&
  93         git repack -a &&
  94         myidx=$(ls -1 .git/objects/pack/*.idx) &&
  95         test -f "$myidx" &&
  96         for p in alt_objects/pack/*.idx; do
  97                 git verify-pack -v $p | sed -n -e "/^[0-9a-f]\{40\}/p"
  98         done | while read sha1 rest; do
  99                 if ! ( git verify-pack -v $myidx | grep "^$sha1" ); then
 100                         echo "Missing object in local pack: $sha1"
 101                         return 1
 102                 fi
 103         done
 104 '
 105
 106 test_expect_success 'packed obs in alt ODB are repacked when local repo has packs' '
 107         rm -f .git/objects/pack/* &&
 108         echo new_content >> file1 &&
 109         git add file1 &&
 110         test_tick &&
 111         git commit -m more_content &&
 112         git repack &&
 113         git repack -a -d &&
 114         myidx=$(ls -1 .git/objects/pack/*.idx) &&
 115         test -f "$myidx" &&
 116         for p in alt_objects/pack/*.idx; do
 117                 git verify-pack -v $p | sed -n -e "/^[0-9a-f]\{40\}/p"
 118         done | while read sha1 rest; do
 119                 if ! ( git verify-pack -v $myidx | grep "^$sha1" ); then
 120                         echo "Missing object in local pack: $sha1"
 121                         return 1
 122                 fi
 123         done
 124 '
 125
 126 test_expect_success 'packed obs in alternate ODB kept pack are repacked' '
 127         # swap the .keep so the commit object is in the pack with .keep
 128         for p in alt_objects/pack/*.pack
 129         do
 130                 base_name=$(basename $p .pack) &&
 131                 if test -f alt_objects/pack/$base_name.keep
 132                 then
 133                         rm alt_objects/pack/$base_name.keep
 134                 else
 135                         touch alt_objects/pack/$base_name.keep
 136                 fi
 137         done &&
 138         git repack -a -d &&
 139         myidx=$(ls -1 .git/objects/pack/*.idx) &&
 140         test -f "$myidx" &&
 141         for p in alt_objects/pack/*.idx; do
 142                 git verify-pack -v $p | sed -n -e "/^[0-9a-f]\{40\}/p"
 143         done | while read sha1 rest; do
 144                 if ! ( git verify-pack -v $myidx | grep "^$sha1" ); then
 145                         echo "Missing object in local pack: $sha1"
 146                         return 1
 147                 fi
 148         done
 149 '
 150
 151 test_expect_success 'packed unreachable obs in alternate ODB are not loosened' '
 152         rm -f alt_objects/pack/*.keep &&
 153         mv .git/objects/pack/* alt_objects/pack/ &&
 154         csha1=$(git rev-parse HEAD^{commit}) &&
 155         git reset --hard HEAD^ &&
 156         test_tick &&
 157         git reflog expire --expire=$test_tick --expire-unreachable=$test_tick --all &&
 158         # The pack-objects call on the next line is equivalent to
 159         # git repack -A -d without the call to prune-packed
 160         git pack-objects --honor-pack-keep --non-empty --all --reflog \
 161             --unpack-unreachable </dev/null pack &&
 162         rm -f .git/objects/pack/* &&
 163         mv pack-* .git/objects/pack/ &&
 164         test 0 = $(git verify-pack -v -- .git/objects/pack/*.idx |
 165                 egrep "^$csha1 " | sort | uniq | wc -l) &&
 166         echo > .git/objects/info/alternates &&
 167         test_must_fail git show $csha1
 168 '
 169
 170 test_expect_success 'local packed unreachable obs that exist in alternate ODB are not loosened' '
 171         echo $(pwd)/alt_objects > .git/objects/info/alternates &&
 172         echo "$csha1" | git pack-objects --non-empty --all --reflog pack &&
 173         rm -f .git/objects/pack/* &&
 174         mv pack-* .git/objects/pack/ &&
 175         # The pack-objects call on the next line is equivalent to
 176         # git repack -A -d without the call to prune-packed
 177         git pack-objects --honor-pack-keep --non-empty --all --reflog \
 178             --unpack-unreachable </dev/null pack &&
 179         rm -f .git/objects/pack/* &&
 180         mv pack-* .git/objects/pack/ &&
 181         test 0 = $(git verify-pack -v -- .git/objects/pack/*.idx |
 182                 egrep "^$csha1 " | sort | uniq | wc -l) &&
 183         echo > .git/objects/info/alternates &&
 184         test_must_fail git show $csha1
 185 '
 186
 187 test_expect_success 'objects made unreachable by grafts only are kept' '
 188         test_tick &&
 189         git commit --allow-empty -m "commit 4" &&
 190         H0=$(git rev-parse HEAD) &&
 191         H1=$(git rev-parse HEAD^) &&
 192         H2=$(git rev-parse HEAD^^) &&
 193         echo "$H0 $H2" > .git/info/grafts &&
 194         git reflog expire --expire=$test_tick --expire-unreachable=$test_tick --all &&
 195         git repack -a -d &&
 196         git cat-file -t $H1
 197         '
 198
 199 test_done
 200