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