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         git commit -m initial_commit &&
  12         # Create two packs
  13         # The first pack will contain all of the objects except one
  14         git rev-list --objects --all | grep -v file2 |
  15                 git pack-objects pack > /dev/null &&
  16         # The second pack will contain the excluded object
  17         packsha1=$(git rev-list --objects --all | grep file2 |
  18                 git pack-objects pack) &&
  19         touch -r pack-$packsha1.pack pack-$packsha1.keep &&
  20         objsha1=$(git verify-pack -v pack-$packsha1.idx | head -n 1 |
  21                 sed -e "s/^\([0-9a-f]\{40\}\).*/\1/") &&
  22         mv pack-* .git/objects/pack/ &&
  23         git repack -A -d -l &&
  24         git prune-packed &&
  25         for p in .git/objects/pack/*.idx; do
  26                 idx=$(basename $p)
  27                 test "pack-$packsha1.idx" = "$idx" && continue
  28                 if git verify-pack -v $p | egrep "^$objsha1"; then
  29                         found_duplicate_object=1
  30                         echo "DUPLICATE OBJECT FOUND"
  31                         break
  32                 fi
  33         done &&
  34         test -z "$found_duplicate_object"
  35 '
  36
  37 test_expect_success 'loose objects in alternate ODB are not repacked' '
  38         mkdir alt_objects &&
  39         echo `pwd`/alt_objects > .git/objects/info/alternates &&
  40         echo content3 > file3 &&
  41         objsha1=$(GIT_OBJECT_DIRECTORY=alt_objects git hash-object -w file3) &&
  42         git add file3 &&
  43         git commit -m commit_file3 &&
  44         git repack -a -d -l &&
  45         git prune-packed &&
  46         for p in .git/objects/pack/*.idx; do
  47                 if git verify-pack -v $p | egrep "^$objsha1"; then
  48                         found_duplicate_object=1
  49                         echo "DUPLICATE OBJECT FOUND"
  50                         break
  51                 fi
  52         done &&
  53         test -z "$found_duplicate_object"
  54 '
  55
  56 test_expect_success 'packed obs in alt ODB are repacked even when local repo is packless' '
  57         mkdir alt_objects/pack
  58         mv .git/objects/pack/* alt_objects/pack &&
  59         git repack -a &&
  60         myidx=$(ls -1 .git/objects/pack/*.idx) &&
  61         test -f "$myidx" &&
  62         for p in alt_objects/pack/*.idx; do
  63                 git verify-pack -v $p | sed -n -e "/^[0-9a-f]\{40\}/p"
  64         done | while read sha1 rest; do
  65                 if ! ( git verify-pack -v $myidx | grep "^$sha1" ); then
  66                         echo "Missing object in local pack: $sha1"
  67                         return 1
  68                 fi
  69         done
  70 '
  71
  72 test_expect_success 'packed obs in alt ODB are repacked when local repo has packs' '
  73         rm -f .git/objects/pack/* &&
  74         echo new_content >> file1 &&
  75         git add file1 &&
  76         git commit -m more_content &&
  77         git repack &&
  78         git repack -a -d &&
  79         myidx=$(ls -1 .git/objects/pack/*.idx) &&
  80         test -f "$myidx" &&
  81         for p in alt_objects/pack/*.idx; do
  82                 git verify-pack -v $p | sed -n -e "/^[0-9a-f]\{40\}/p"
  83         done | while read sha1 rest; do
  84                 if ! ( git verify-pack -v $myidx | grep "^$sha1" ); then
  85                         echo "Missing object in local pack: $sha1"
  86                         return 1
  87                 fi
  88         done
  89 '
  90
  91 test_expect_success 'packed obs in alternate ODB kept pack are repacked' '
  92         # swap the .keep so the commit object is in the pack with .keep
  93         for p in alt_objects/pack/*.pack
  94         do
  95                 base_name=$(basename $p .pack)
  96                 if test -f alt_objects/pack/$base_name.keep
  97                 then
  98                         rm alt_objects/pack/$base_name.keep
  99                 else
 100                         touch alt_objects/pack/$base_name.keep
 101                 fi
 102         done
 103         git repack -a -d &&
 104         myidx=$(ls -1 .git/objects/pack/*.idx) &&
 105         test -f "$myidx" &&
 106         for p in alt_objects/pack/*.idx; do
 107                 git verify-pack -v $p | sed -n -e "/^[0-9a-f]\{40\}/p"
 108         done | while read sha1 rest; do
 109                 if ! ( git verify-pack -v $myidx | grep "^$sha1" ); then
 110                         echo "Missing object in local pack: $sha1"
 111                         return 1
 112                 fi
 113         done
 114 '
 115
 116 test_expect_success 'packed unreachable obs in alternate ODB are not loosened' '
 117         rm -f alt_objects/pack/*.keep &&
 118         mv .git/objects/pack/* alt_objects/pack/ &&
 119         csha1=$(git rev-parse HEAD^{commit}) &&
 120         git reset --hard HEAD^ &&
 121         sleep 1 &&
 122         git reflog expire --expire=now --expire-unreachable=now --all &&
 123         # The pack-objects call on the next line is equivalent to
 124         # git repack -A -d without the call to prune-packed
 125         git pack-objects --honor-pack-keep --non-empty --all --reflog \
 126             --unpack-unreachable </dev/null pack &&
 127         rm -f .git/objects/pack/* &&
 128         mv pack-* .git/objects/pack/ &&
 129         test 0 = $(git verify-pack -v -- .git/objects/pack/*.idx |
 130                 egrep "^$csha1 " | sort | uniq | wc -l) &&
 131         echo > .git/objects/info/alternates &&
 132         test_must_fail git show $csha1
 133 '
 134
 135 test_expect_success 'local packed unreachable obs that exist in alternate ODB are not loosened' '
 136         echo `pwd`/alt_objects > .git/objects/info/alternates &&
 137         echo "$csha1" | git pack-objects --non-empty --all --reflog pack &&
 138         rm -f .git/objects/pack/* &&
 139         mv pack-* .git/objects/pack/ &&
 140         # The pack-objects call on the next line is equivalent to
 141         # git repack -A -d without the call to prune-packed
 142         git pack-objects --honor-pack-keep --non-empty --all --reflog \
 143             --unpack-unreachable </dev/null pack &&
 144         rm -f .git/objects/pack/* &&
 145         mv pack-* .git/objects/pack/ &&
 146         test 0 = $(git verify-pack -v -- .git/objects/pack/*.idx |
 147                 egrep "^$csha1 " | sort | uniq | wc -l) &&
 148         echo > .git/objects/info/alternates &&
 149         test_must_fail git show $csha1
 150 '
 151
 152 test_expect_success 'objects made unreachable by grafts only are kept' '
 153         test_tick &&
 154         git commit --allow-empty -m "commit 4" &&
 155         H0=$(git rev-parse HEAD) &&
 156         H1=$(git rev-parse HEAD^) &&
 157         H2=$(git rev-parse HEAD^^) &&
 158         echo "$H0 $H2" > .git/info/grafts &&
 159         git reflog expire --expire=now --expire-unreachable=now --all &&
 160         git repack -a -d &&
 161         git cat-file -t $H1
 162         '
 163
 164 test_done
 165