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