t/t3210-pack-refs.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2005 Amos Waterland
   4 # Copyright (c) 2006 Christian Couder
   5 #
   6
   7 test_description='git pack-refs should not change the branch semantic
   8
   9 This test runs git pack-refs and git show-ref and checks that the branch
  10 semantic is still the same.
  11 '
  12 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
  13 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
  14
  15 TEST_PASSES_SANITIZE_LEAK=true
  16 . ./test-lib.sh
  17
  18 test_expect_success 'enable reflogs' '
  19         git config core.logallrefupdates true
  20 '
  21
  22 test_expect_success \
  23     'prepare a trivial repository' \
  24     'echo Hello > A &&
  25      git update-index --add A &&
  26      git commit -m "Initial commit." &&
  27      HEAD=$(git rev-parse --verify HEAD)'
  28
  29 SHA1=
  30
  31 test_expect_success \
  32     'see if git show-ref works as expected' \
  33     'git branch a &&
  34      SHA1=$(cat .git/refs/heads/a) &&
  35      echo "$SHA1 refs/heads/a" >expect &&
  36      git show-ref a >result &&
  37      test_cmp expect result'
  38
  39 test_expect_success \
  40     'see if a branch still exists when packed' \
  41     'git branch b &&
  42      git pack-refs --all &&
  43      rm -f .git/refs/heads/b &&
  44      echo "$SHA1 refs/heads/b" >expect &&
  45      git show-ref b >result &&
  46      test_cmp expect result'
  47
  48 test_expect_success 'git branch c/d should barf if branch c exists' '
  49      git branch c &&
  50      git pack-refs --all &&
  51      rm -f .git/refs/heads/c &&
  52      test_must_fail git branch c/d
  53 '
  54
  55 test_expect_success \
  56     'see if a branch still exists after git pack-refs --prune' \
  57     'git branch e &&
  58      git pack-refs --all --prune &&
  59      echo "$SHA1 refs/heads/e" >expect &&
  60      git show-ref e >result &&
  61      test_cmp expect result'
  62
  63 test_expect_success 'see if git pack-refs --prune remove ref files' '
  64      git branch f &&
  65      git pack-refs --all --prune &&
  66      ! test -f .git/refs/heads/f
  67 '
  68
  69 test_expect_success 'see if git pack-refs --prune removes empty dirs' '
  70      git branch r/s/t &&
  71      git pack-refs --all --prune &&
  72      ! test -e .git/refs/heads/r
  73 '
  74
  75 test_expect_success \
  76     'git branch g should work when git branch g/h has been deleted' \
  77     'git branch g/h &&
  78      git pack-refs --all --prune &&
  79      git branch -d g/h &&
  80      git branch g &&
  81      git pack-refs --all &&
  82      git branch -d g'
  83
  84 test_expect_success 'git branch i/j/k should barf if branch i exists' '
  85      git branch i &&
  86      git pack-refs --all --prune &&
  87      test_must_fail git branch i/j/k
  88 '
  89
  90 test_expect_success \
  91     'test git branch k after branch k/l/m and k/lm have been deleted' \
  92     'git branch k/l &&
  93      git branch k/lm &&
  94      git branch -d k/l &&
  95      git branch k/l/m &&
  96      git branch -d k/l/m &&
  97      git branch -d k/lm &&
  98      git branch k'
  99
 100 test_expect_success \
 101     'test git branch n after some branch deletion and pruning' \
 102     'git branch n/o &&
 103      git branch n/op &&
 104      git branch -d n/o &&
 105      git branch n/o/p &&
 106      git branch -d n/op &&
 107      git pack-refs --all --prune &&
 108      git branch -d n/o/p &&
 109      git branch n'
 110
 111 test_expect_success \
 112         'see if up-to-date packed refs are preserved' \
 113         'git branch q &&
 114          git pack-refs --all --prune &&
 115          git update-ref refs/heads/q refs/heads/q &&
 116          ! test -f .git/refs/heads/q'
 117
 118 test_expect_success 'pack, prune and repack' '
 119         git tag foo &&
 120         git pack-refs --all --prune &&
 121         git show-ref >all-of-them &&
 122         git pack-refs &&
 123         git show-ref >again &&
 124         test_cmp all-of-them again
 125 '
 126
 127 test_expect_success 'explicit pack-refs with dangling packed reference' '
 128         git commit --allow-empty -m "soon to be garbage-collected" &&
 129         git pack-refs --all &&
 130         git reset --hard HEAD^ &&
 131         git reflog expire --expire=all --all &&
 132         git prune --expire=all &&
 133         git pack-refs --all 2>result &&
 134         test_must_be_empty result
 135 '
 136
 137 test_expect_success 'delete ref with dangling packed version' '
 138         git checkout -b lamb &&
 139         git commit --allow-empty -m "future garbage" &&
 140         git pack-refs --all &&
 141         git reset --hard HEAD^ &&
 142         git checkout main &&
 143         git reflog expire --expire=all --all &&
 144         git prune --expire=all &&
 145         git branch -d lamb 2>result &&
 146         test_must_be_empty result
 147 '
 148
 149 test_expect_success 'delete ref while another dangling packed ref' '
 150         git branch lamb &&
 151         git commit --allow-empty -m "future garbage" &&
 152         git pack-refs --all &&
 153         git reset --hard HEAD^ &&
 154         git reflog expire --expire=all --all &&
 155         git prune --expire=all &&
 156         git branch -d lamb 2>result &&
 157         test_must_be_empty result
 158 '
 159
 160 test_expect_success 'pack ref directly below refs/' '
 161         git update-ref refs/top HEAD &&
 162         git pack-refs --all --prune &&
 163         grep refs/top .git/packed-refs &&
 164         test_path_is_missing .git/refs/top
 165 '
 166
 167 test_expect_success 'do not pack ref in refs/bisect' '
 168         git update-ref refs/bisect/local HEAD &&
 169         git pack-refs --all --prune &&
 170         ! grep refs/bisect/local .git/packed-refs >/dev/null &&
 171         test_path_is_file .git/refs/bisect/local
 172 '
 173
 174 test_expect_success 'disable reflogs' '
 175         git config core.logallrefupdates false &&
 176         rm -rf .git/logs
 177 '
 178
 179 test_expect_success 'create packed foo/bar/baz branch' '
 180         git branch foo/bar/baz &&
 181         git pack-refs --all --prune &&
 182         test_path_is_missing .git/refs/heads/foo/bar/baz &&
 183         test_must_fail git reflog exists refs/heads/foo/bar/baz
 184 '
 185
 186 test_expect_success 'notice d/f conflict with existing directory' '
 187         test_must_fail git branch foo &&
 188         test_must_fail git branch foo/bar
 189 '
 190
 191 test_expect_success 'existing directory reports concrete ref' '
 192         test_must_fail git branch foo 2>stderr &&
 193         test_i18ngrep refs/heads/foo/bar/baz stderr
 194 '
 195
 196 test_expect_success 'notice d/f conflict with existing ref' '
 197         test_must_fail git branch foo/bar/baz/extra &&
 198         test_must_fail git branch foo/bar/baz/lots/of/extra/components
 199 '
 200
 201 test_expect_success 'reject packed-refs with unterminated line' '
 202         cp .git/packed-refs .git/packed-refs.bak &&
 203         test_when_finished "mv .git/packed-refs.bak .git/packed-refs" &&
 204         printf "%s" "$HEAD refs/zzzzz" >>.git/packed-refs &&
 205         echo "fatal: unterminated line in .git/packed-refs: $HEAD refs/zzzzz" >expected_err &&
 206         test_must_fail git for-each-ref >out 2>err &&
 207         test_cmp expected_err err
 208 '
 209
 210 test_expect_success 'reject packed-refs containing junk' '
 211         cp .git/packed-refs .git/packed-refs.bak &&
 212         test_when_finished "mv .git/packed-refs.bak .git/packed-refs" &&
 213         printf "%s\n" "bogus content" >>.git/packed-refs &&
 214         echo "fatal: unexpected line in .git/packed-refs: bogus content" >expected_err &&
 215         test_must_fail git for-each-ref >out 2>err &&
 216         test_cmp expected_err err
 217 '
 218
 219 test_expect_success 'reject packed-refs with a short SHA-1' '
 220         cp .git/packed-refs .git/packed-refs.bak &&
 221         test_when_finished "mv .git/packed-refs.bak .git/packed-refs" &&
 222         printf "%.7s %s\n" $HEAD refs/zzzzz >>.git/packed-refs &&
 223         printf "fatal: unexpected line in .git/packed-refs: %.7s %s\n" $HEAD refs/zzzzz >expected_err &&
 224         test_must_fail git for-each-ref >out 2>err &&
 225         test_cmp expected_err err
 226 '
 227
 228 test_expect_success 'timeout if packed-refs.lock exists' '
 229         LOCK=.git/packed-refs.lock &&
 230         >"$LOCK" &&
 231         test_when_finished "rm -f $LOCK" &&
 232         test_must_fail git pack-refs --all --prune
 233 '
 234
 235 test_expect_success 'retry acquiring packed-refs.lock' '
 236         LOCK=.git/packed-refs.lock &&
 237         >"$LOCK" &&
 238         test_when_finished "wait && rm -f $LOCK" &&
 239         {
 240                 ( sleep 1 && rm -f $LOCK ) &
 241         } &&
 242         git -c core.packedrefstimeout=3000 pack-refs --all --prune
 243 '
 244
 245 test_expect_success SYMLINKS 'pack symlinked packed-refs' '
 246         # First make sure that symlinking works when reading:
 247         git update-ref refs/heads/lossy refs/heads/main &&
 248         git for-each-ref >all-refs-before &&
 249         mv .git/packed-refs .git/my-deviant-packed-refs &&
 250         ln -s my-deviant-packed-refs .git/packed-refs &&
 251         git for-each-ref >all-refs-linked &&
 252         test_cmp all-refs-before all-refs-linked &&
 253         git pack-refs --all --prune &&
 254         git for-each-ref >all-refs-packed &&
 255         test_cmp all-refs-before all-refs-packed &&
 256         test -h .git/packed-refs &&
 257         test "$(test_readlink .git/packed-refs)" = "my-deviant-packed-refs"
 258 '
 259
 260 test_done