t/t7701-repack-unpack-unreachable.sh

   1 #!/bin/sh
   2
   3 test_description='git repack works correctly'
   4
   5 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
   6 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
   7
   8 TEST_PASSES_SANITIZE_LEAK=true
   9 . ./test-lib.sh
  10
  11 fsha1=
  12 csha1=
  13 tsha1=
  14
  15 test_expect_success '-A with -d option leaves unreachable objects unpacked' '
  16         echo content > file1 &&
  17         git add . &&
  18         test_tick &&
  19         git commit -m initial_commit &&
  20         # create a transient branch with unique content
  21         git checkout -b transient_branch &&
  22         echo more content >> file1 &&
  23         # record the objects created in the database for file, commit, tree
  24         fsha1=$(git hash-object file1) &&
  25         test_tick &&
  26         git commit -a -m more_content &&
  27         csha1=$(git rev-parse HEAD^{commit}) &&
  28         tsha1=$(git rev-parse HEAD^{tree}) &&
  29         git checkout main &&
  30         echo even more content >> file1 &&
  31         test_tick &&
  32         git commit -a -m even_more_content &&
  33         # delete the transient branch
  34         git branch -D transient_branch &&
  35         # pack the repo
  36         git repack -A -d -l &&
  37         # verify objects are packed in repository
  38         test 3 = $(git verify-pack -v -- .git/objects/pack/*.idx |
  39                    grep -E "^($fsha1|$csha1|$tsha1) " |
  40                    sort | uniq | wc -l) &&
  41         git show $fsha1 &&
  42         git show $csha1 &&
  43         git show $tsha1 &&
  44         # now expire the reflog, while keeping reachable ones but expiring
  45         # unreachables immediately
  46         test_tick &&
  47         sometimeago=$(( $test_tick - 10000 )) &&
  48         git reflog expire --expire=$sometimeago --expire-unreachable=$test_tick --all &&
  49         # and repack
  50         git repack -A -d -l &&
  51         # verify objects are retained unpacked
  52         test 0 = $(git verify-pack -v -- .git/objects/pack/*.idx |
  53                    grep -E "^($fsha1|$csha1|$tsha1) " |
  54                    sort | uniq | wc -l) &&
  55         git show $fsha1 &&
  56         git show $csha1 &&
  57         git show $tsha1
  58 '
  59
  60 compare_mtimes ()
  61 {
  62         read tref &&
  63         while read t; do
  64                 test "$tref" = "$t" || return 1
  65         done
  66 }
  67
  68 test_expect_success '-A without -d option leaves unreachable objects packed' '
  69         fsha1path=$(echo "$fsha1" | sed -e "s|\(..\)|\1/|") &&
  70         fsha1path=".git/objects/$fsha1path" &&
  71         csha1path=$(echo "$csha1" | sed -e "s|\(..\)|\1/|") &&
  72         csha1path=".git/objects/$csha1path" &&
  73         tsha1path=$(echo "$tsha1" | sed -e "s|\(..\)|\1/|") &&
  74         tsha1path=".git/objects/$tsha1path" &&
  75         git branch transient_branch $csha1 &&
  76         git repack -a -d -l &&
  77         test ! -f "$fsha1path" &&
  78         test ! -f "$csha1path" &&
  79         test ! -f "$tsha1path" &&
  80         test 1 = $(ls -1 .git/objects/pack/pack-*.pack | wc -l) &&
  81         packfile=$(ls .git/objects/pack/pack-*.pack) &&
  82         git branch -D transient_branch &&
  83         test_tick &&
  84         git repack -A -l &&
  85         test ! -f "$fsha1path" &&
  86         test ! -f "$csha1path" &&
  87         test ! -f "$tsha1path" &&
  88         git show $fsha1 &&
  89         git show $csha1 &&
  90         git show $tsha1
  91 '
  92
  93 test_expect_success 'unpacked objects receive timestamp of pack file' '
  94         tmppack=".git/objects/pack/tmp_pack" &&
  95         ln "$packfile" "$tmppack" &&
  96         git repack -A -l -d &&
  97         test-tool chmtime --get "$tmppack" "$fsha1path" "$csha1path" "$tsha1path" \
  98                 > mtimes &&
  99         compare_mtimes < mtimes
 100 '
 101
 102 test_expect_success 'do not bother loosening old objects' '
 103         obj1=$(echo one | git hash-object -w --stdin) &&
 104         obj2=$(echo two | git hash-object -w --stdin) &&
 105         pack1=$(echo $obj1 | git pack-objects .git/objects/pack/pack) &&
 106         pack2=$(echo $obj2 | git pack-objects .git/objects/pack/pack) &&
 107         git prune-packed &&
 108         git cat-file -p $obj1 &&
 109         git cat-file -p $obj2 &&
 110         test-tool chmtime =-86400 .git/objects/pack/pack-$pack2.pack &&
 111         git repack -A -d --unpack-unreachable=1.hour.ago &&
 112         git cat-file -p $obj1 &&
 113         test_must_fail git cat-file -p $obj2
 114 '
 115
 116 test_expect_success 'keep packed objects found only in index' '
 117         echo my-unique-content >file &&
 118         git add file &&
 119         git commit -m "make it reachable" &&
 120         git gc &&
 121         git reset HEAD^ &&
 122         git reflog expire --expire=now --all &&
 123         git add file &&
 124         test-tool chmtime =-86400 .git/objects/pack/* &&
 125         git gc --prune=1.hour.ago &&
 126         git cat-file blob :file
 127 '
 128
 129 test_expect_success 'repack -k keeps unreachable packed objects' '
 130         # create packed-but-unreachable object
 131         sha1=$(echo unreachable-packed | git hash-object -w --stdin) &&
 132         pack=$(echo $sha1 | git pack-objects .git/objects/pack/pack) &&
 133         git prune-packed &&
 134
 135         # -k should keep it
 136         git repack -adk &&
 137         git cat-file -p $sha1 &&
 138
 139         # and double check that without -k it would have been removed
 140         git repack -ad &&
 141         test_must_fail git cat-file -p $sha1
 142 '
 143
 144 test_expect_success 'repack -k packs unreachable loose objects' '
 145         # create loose unreachable object
 146         sha1=$(echo would-be-deleted-loose | git hash-object -w --stdin) &&
 147         objpath=.git/objects/$(echo $sha1 | sed "s,..,&/,") &&
 148         test_path_is_file $objpath &&
 149
 150         # and confirm that the loose object goes away, but we can
 151         # still access it (ergo, it is packed)
 152         git repack -adk &&
 153         test_path_is_missing $objpath &&
 154         git cat-file -p $sha1
 155 '
 156
 157 test_done