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