t/t0601-reffiles-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
  13 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
  14 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
  15 GIT_TEST_DEFAULT_REF_FORMAT=files
  16 export GIT_TEST_DEFAULT_REF_FORMAT
  17
  18 TEST_PASSES_SANITIZE_LEAK=true
  19 . ./test-lib.sh
  20
  21 test_expect_success 'enable reflogs' '
  22         git config core.logallrefupdates true
  23 '
  24
  25 test_expect_success 'prepare a trivial repository' '
  26         echo Hello > A &&
  27         git update-index --add A &&
  28         git commit -m "Initial commit." &&
  29         HEAD=$(git rev-parse --verify HEAD)
  30 '
  31
  32 test_expect_success 'pack-refs --prune --all' '
  33         test_path_is_missing .git/packed-refs &&
  34         git pack-refs --no-prune --all &&
  35         test_path_is_file .git/packed-refs &&
  36         N=$(find .git/refs -type f | wc -l) &&
  37         test "$N" != 0 &&
  38
  39         git pack-refs --prune --all &&
  40         test_path_is_file .git/packed-refs &&
  41         N=$(find .git/refs -type f) &&
  42         test -z "$N"
  43 '
  44
  45 SHA1=
  46
  47 test_expect_success 'see if git show-ref works as expected' '
  48         git branch a &&
  49         SHA1=$(cat .git/refs/heads/a) &&
  50         echo "$SHA1 refs/heads/a" >expect &&
  51         git show-ref a >result &&
  52         test_cmp expect result
  53 '
  54
  55 test_expect_success 'see if a branch still exists when packed' '
  56         git branch b &&
  57         git pack-refs --all &&
  58         rm -f .git/refs/heads/b &&
  59         echo "$SHA1 refs/heads/b" >expect &&
  60         git show-ref b >result &&
  61         test_cmp expect result
  62 '
  63
  64 test_expect_success 'git branch c/d should barf if branch c exists' '
  65         git branch c &&
  66         git pack-refs --all &&
  67         rm -f .git/refs/heads/c &&
  68         test_must_fail git branch c/d
  69 '
  70
  71 test_expect_success 'see if a branch still exists after git pack-refs --prune' '
  72         git branch e &&
  73         git pack-refs --all --prune &&
  74         echo "$SHA1 refs/heads/e" >expect &&
  75         git show-ref e >result &&
  76         test_cmp expect result
  77 '
  78
  79 test_expect_success 'see if git pack-refs --prune remove ref files' '
  80         git branch f &&
  81         git pack-refs --all --prune &&
  82         ! test -f .git/refs/heads/f
  83 '
  84
  85 test_expect_success 'see if git pack-refs --prune removes empty dirs' '
  86         git branch r/s/t &&
  87         git pack-refs --all --prune &&
  88         ! test -e .git/refs/heads/r
  89 '
  90
  91 test_expect_success 'git branch g should work when git branch g/h has been deleted' '
  92         git branch g/h &&
  93         git pack-refs --all --prune &&
  94         git branch -d g/h &&
  95         git branch g &&
  96         git pack-refs --all &&
  97         git branch -d g
  98 '
  99
 100 test_expect_success 'git branch i/j/k should barf if branch i exists' '
 101         git branch i &&
 102         git pack-refs --all --prune &&
 103         test_must_fail git branch i/j/k
 104 '
 105
 106 test_expect_success 'test git branch k after branch k/l/m and k/lm have been deleted' '
 107         git branch k/l &&
 108         git branch k/lm &&
 109         git branch -d k/l &&
 110         git branch k/l/m &&
 111         git branch -d k/l/m &&
 112         git branch -d k/lm &&
 113         git branch k
 114 '
 115
 116 test_expect_success 'test git branch n after some branch deletion and pruning' '
 117         git branch n/o &&
 118         git branch n/op &&
 119         git branch -d n/o &&
 120         git branch n/o/p &&
 121         git branch -d n/op &&
 122         git pack-refs --all --prune &&
 123         git branch -d n/o/p &&
 124         git branch n
 125 '
 126
 127 test_expect_success 'test excluded refs are not packed' '
 128         git branch dont_pack1 &&
 129         git branch dont_pack2 &&
 130         git branch pack_this &&
 131         git pack-refs --all --exclude "refs/heads/dont_pack*" &&
 132         test -f .git/refs/heads/dont_pack1 &&
 133         test -f .git/refs/heads/dont_pack2 &&
 134         ! test -f .git/refs/heads/pack_this'
 135
 136 test_expect_success 'test --no-exclude refs clears excluded refs' '
 137         git branch dont_pack3 &&
 138         git branch dont_pack4 &&
 139         git pack-refs --all --exclude "refs/heads/dont_pack*" --no-exclude &&
 140         ! test -f .git/refs/heads/dont_pack3 &&
 141         ! test -f .git/refs/heads/dont_pack4'
 142
 143 test_expect_success 'test only included refs are packed' '
 144         git branch pack_this1 &&
 145         git branch pack_this2 &&
 146         git tag dont_pack5 &&
 147         git pack-refs --include "refs/heads/pack_this*" &&
 148         test -f .git/refs/tags/dont_pack5 &&
 149         ! test -f .git/refs/heads/pack_this1 &&
 150         ! test -f .git/refs/heads/pack_this2'
 151
 152 test_expect_success 'test --no-include refs clears included refs' '
 153         git branch pack1 &&
 154         git branch pack2 &&
 155         git pack-refs --include "refs/heads/pack*" --no-include &&
 156         test -f .git/refs/heads/pack1 &&
 157         test -f .git/refs/heads/pack2'
 158
 159 test_expect_success 'test --exclude takes precedence over --include' '
 160         git branch dont_pack5 &&
 161         git pack-refs --include "refs/heads/pack*" --exclude "refs/heads/pack*" &&
 162         test -f .git/refs/heads/dont_pack5'
 163
 164 test_expect_success '--auto packs and prunes refs as usual' '
 165         git branch auto &&
 166         test_path_is_file .git/refs/heads/auto &&
 167         git pack-refs --auto --all &&
 168         test_path_is_missing .git/refs/heads/auto
 169 '
 170
 171 test_expect_success 'see if up-to-date packed refs are preserved' '
 172         git branch q &&
 173         git pack-refs --all --prune &&
 174         git update-ref refs/heads/q refs/heads/q &&
 175         ! test -f .git/refs/heads/q
 176 '
 177
 178 test_expect_success 'pack, prune and repack' '
 179         git tag foo &&
 180         git pack-refs --all --prune &&
 181         git show-ref >all-of-them &&
 182         git pack-refs &&
 183         git show-ref >again &&
 184         test_cmp all-of-them again
 185 '
 186
 187 test_expect_success 'explicit pack-refs with dangling packed reference' '
 188         git commit --allow-empty -m "soon to be garbage-collected" &&
 189         git pack-refs --all &&
 190         git reset --hard HEAD^ &&
 191         git reflog expire --expire=all --all &&
 192         git prune --expire=all &&
 193         git pack-refs --all 2>result &&
 194         test_must_be_empty result
 195 '
 196
 197 test_expect_success 'delete ref with dangling packed version' '
 198         git checkout -b lamb &&
 199         git commit --allow-empty -m "future garbage" &&
 200         git pack-refs --all &&
 201         git reset --hard HEAD^ &&
 202         git checkout main &&
 203         git reflog expire --expire=all --all &&
 204         git prune --expire=all &&
 205         git branch -d lamb 2>result &&
 206         test_must_be_empty result
 207 '
 208
 209 test_expect_success 'delete ref while another dangling packed ref' '
 210         git branch lamb &&
 211         git commit --allow-empty -m "future garbage" &&
 212         git pack-refs --all &&
 213         git reset --hard HEAD^ &&
 214         git reflog expire --expire=all --all &&
 215         git prune --expire=all &&
 216         git branch -d lamb 2>result &&
 217         test_must_be_empty result
 218 '
 219
 220 test_expect_success 'pack ref directly below refs/' '
 221         git update-ref refs/top HEAD &&
 222         git pack-refs --all --prune &&
 223         grep refs/top .git/packed-refs &&
 224         test_path_is_missing .git/refs/top
 225 '
 226
 227 test_expect_success 'do not pack ref in refs/bisect' '
 228         git update-ref refs/bisect/local HEAD &&
 229         git pack-refs --all --prune &&
 230         ! grep refs/bisect/local .git/packed-refs >/dev/null &&
 231         test_path_is_file .git/refs/bisect/local
 232 '
 233
 234 test_expect_success 'disable reflogs' '
 235         git config core.logallrefupdates false &&
 236         rm -rf .git/logs
 237 '
 238
 239 test_expect_success 'create packed foo/bar/baz branch' '
 240         git branch foo/bar/baz &&
 241         git pack-refs --all --prune &&
 242         test_path_is_missing .git/refs/heads/foo/bar/baz &&
 243         test_must_fail git reflog exists refs/heads/foo/bar/baz
 244 '
 245
 246 test_expect_success 'notice d/f conflict with existing directory' '
 247         test_must_fail git branch foo &&
 248         test_must_fail git branch foo/bar
 249 '
 250
 251 test_expect_success 'existing directory reports concrete ref' '
 252         test_must_fail git branch foo 2>stderr &&
 253         test_grep refs/heads/foo/bar/baz stderr
 254 '
 255
 256 test_expect_success 'notice d/f conflict with existing ref' '
 257         test_must_fail git branch foo/bar/baz/extra &&
 258         test_must_fail git branch foo/bar/baz/lots/of/extra/components
 259 '
 260
 261 test_expect_success 'reject packed-refs with unterminated line' '
 262         cp .git/packed-refs .git/packed-refs.bak &&
 263         test_when_finished "mv .git/packed-refs.bak .git/packed-refs" &&
 264         printf "%s" "$HEAD refs/zzzzz" >>.git/packed-refs &&
 265         echo "fatal: unterminated line in .git/packed-refs: $HEAD refs/zzzzz" >expected_err &&
 266         test_must_fail git for-each-ref >out 2>err &&
 267         test_cmp expected_err err
 268 '
 269
 270 test_expect_success 'reject packed-refs containing junk' '
 271         cp .git/packed-refs .git/packed-refs.bak &&
 272         test_when_finished "mv .git/packed-refs.bak .git/packed-refs" &&
 273         printf "%s\n" "bogus content" >>.git/packed-refs &&
 274         echo "fatal: unexpected line in .git/packed-refs: bogus content" >expected_err &&
 275         test_must_fail git for-each-ref >out 2>err &&
 276         test_cmp expected_err err
 277 '
 278
 279 test_expect_success 'reject packed-refs with a short SHA-1' '
 280         cp .git/packed-refs .git/packed-refs.bak &&
 281         test_when_finished "mv .git/packed-refs.bak .git/packed-refs" &&
 282         printf "%.7s %s\n" $HEAD refs/zzzzz >>.git/packed-refs &&
 283         printf "fatal: unexpected line in .git/packed-refs: %.7s %s\n" $HEAD refs/zzzzz >expected_err &&
 284         test_must_fail git for-each-ref >out 2>err &&
 285         test_cmp expected_err err
 286 '
 287
 288 test_expect_success 'timeout if packed-refs.lock exists' '
 289         LOCK=.git/packed-refs.lock &&
 290         >"$LOCK" &&
 291         test_when_finished "rm -f $LOCK" &&
 292         test_must_fail git pack-refs --all --prune
 293 '
 294
 295 test_expect_success 'retry acquiring packed-refs.lock' '
 296         LOCK=.git/packed-refs.lock &&
 297         >"$LOCK" &&
 298         test_when_finished "wait && rm -f $LOCK" &&
 299         {
 300                 ( sleep 1 && rm -f $LOCK ) &
 301         } &&
 302         git -c core.packedrefstimeout=3000 pack-refs --all --prune
 303 '
 304
 305 test_expect_success SYMLINKS 'pack symlinked packed-refs' '
 306         # First make sure that symlinking works when reading:
 307         git update-ref refs/heads/lossy refs/heads/main &&
 308         git for-each-ref >all-refs-before &&
 309         mv .git/packed-refs .git/my-deviant-packed-refs &&
 310         ln -s my-deviant-packed-refs .git/packed-refs &&
 311         git for-each-ref >all-refs-linked &&
 312         test_cmp all-refs-before all-refs-linked &&
 313         git pack-refs --all --prune &&
 314         git for-each-ref >all-refs-packed &&
 315         test_cmp all-refs-before all-refs-packed &&
 316         test -h .git/packed-refs &&
 317         test "$(test_readlink .git/packed-refs)" = "my-deviant-packed-refs"
 318 '
 319
 320 # The 'packed-refs' file is stored directly in .git/. This means it is global
 321 # to the repository, and can only contain refs that are shared across all
 322 # worktrees.
 323 test_expect_success 'refs/worktree must not be packed' '
 324         test_commit initial &&
 325         test_commit wt1 &&
 326         test_commit wt2 &&
 327         git worktree add wt1 wt1 &&
 328         git worktree add wt2 wt2 &&
 329         git checkout initial &&
 330         git update-ref refs/worktree/foo HEAD &&
 331         git -C wt1 update-ref refs/worktree/foo HEAD &&
 332         git -C wt2 update-ref refs/worktree/foo HEAD &&
 333         git pack-refs --all &&
 334         test_path_is_missing .git/refs/tags/wt1 &&
 335         test_path_is_file .git/refs/worktree/foo &&
 336         test_path_is_file .git/worktrees/wt1/refs/worktree/foo &&
 337         test_path_is_file .git/worktrees/wt2/refs/worktree/foo
 338 '
 339
 340 # we do not want to count on running pack-refs to
 341 # actually pack it, as it is perfectly reasonable to
 342 # skip processing a broken ref
 343 test_expect_success 'create packed-refs file with broken ref' '
 344         test_tick && git commit --allow-empty -m one &&
 345         recoverable=$(git rev-parse HEAD) &&
 346         test_tick && git commit --allow-empty -m two &&
 347         missing=$(git rev-parse HEAD) &&
 348         rm -f .git/refs/heads/main &&
 349         cat >.git/packed-refs <<-EOF &&
 350         $missing refs/heads/main
 351         $recoverable refs/heads/other
 352         EOF
 353         echo $missing >expect &&
 354         git rev-parse refs/heads/main >actual &&
 355         test_cmp expect actual
 356 '
 357
 358 test_expect_success 'pack-refs does not silently delete broken packed ref' '
 359         git pack-refs --all --prune &&
 360         git rev-parse refs/heads/main >actual &&
 361         test_cmp expect actual
 362 '
 363
 364 test_expect_success 'pack-refs does not drop broken refs during deletion' '
 365         git update-ref -d refs/heads/other &&
 366         git rev-parse refs/heads/main >actual &&
 367         test_cmp expect actual
 368 '
 369
 370 test_expect_success 'maintenance --auto unconditionally packs loose refs' '
 371         git update-ref refs/heads/something HEAD &&
 372         test_path_is_file .git/refs/heads/something &&
 373         git rev-parse refs/heads/something >expect &&
 374         git maintenance run --task=pack-refs --auto &&
 375         test_path_is_missing .git/refs/heads/something &&
 376         git rev-parse refs/heads/something >actual &&
 377         test_cmp expect actual
 378 '
 379
 380 test_done