t/t0610-reftable-basics.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2020 Google LLC
   4 #
   5
   6 test_description='reftable basics'
   7 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
   8 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
   9
  10 . ./test-lib.sh
  11
  12 if ! test_have_prereq REFTABLE
  13 then
  14         skip_all='skipping reftable tests; set GIT_TEST_DEFAULT_REF_FORMAT=reftable'
  15         test_done
  16 fi
  17
  18 INVALID_OID=$(test_oid 001)
  19
  20 test_expect_success 'init: creates basic reftable structures' '
  21         test_when_finished "rm -rf repo" &&
  22         git init repo &&
  23         test_path_is_dir repo/.git/reftable &&
  24         test_path_is_file repo/.git/reftable/tables.list &&
  25         echo reftable >expect &&
  26         git -C repo rev-parse --show-ref-format >actual &&
  27         test_cmp expect actual
  28 '
  29
  30 test_expect_success 'init: sha256 object format via environment variable' '
  31         test_when_finished "rm -rf repo" &&
  32         GIT_DEFAULT_HASH=sha256 git init repo &&
  33         cat >expect <<-EOF &&
  34         sha256
  35         reftable
  36         EOF
  37         git -C repo rev-parse --show-object-format --show-ref-format >actual &&
  38         test_cmp expect actual
  39 '
  40
  41 test_expect_success 'init: sha256 object format via option' '
  42         test_when_finished "rm -rf repo" &&
  43         git init --object-format=sha256 repo &&
  44         cat >expect <<-EOF &&
  45         sha256
  46         reftable
  47         EOF
  48         git -C repo rev-parse --show-object-format --show-ref-format >actual &&
  49         test_cmp expect actual
  50 '
  51
  52 test_expect_success 'init: reinitializing reftable backend succeeds' '
  53         test_when_finished "rm -rf repo" &&
  54         git init repo &&
  55         test_commit -C repo A &&
  56
  57         git -C repo for-each-ref >expect &&
  58         git init --ref-format=reftable repo &&
  59         git -C repo for-each-ref >actual &&
  60         test_cmp expect actual
  61 '
  62
  63 test_expect_success 'init: reinitializing files with reftable backend fails' '
  64         test_when_finished "rm -rf repo" &&
  65         git init --ref-format=files repo &&
  66         test_commit -C repo file &&
  67
  68         cp repo/.git/HEAD expect &&
  69         test_must_fail git init --ref-format=reftable repo &&
  70         test_cmp expect repo/.git/HEAD
  71 '
  72
  73 test_expect_success 'init: reinitializing reftable with files backend fails' '
  74         test_when_finished "rm -rf repo" &&
  75         git init --ref-format=reftable repo &&
  76         test_commit -C repo file &&
  77
  78         cp repo/.git/HEAD expect &&
  79         test_must_fail git init --ref-format=files repo &&
  80         test_cmp expect repo/.git/HEAD
  81 '
  82
  83 test_expect_perms () {
  84         local perms="$1"
  85         local file="$2"
  86         local actual=$(ls -l "$file") &&
  87
  88         case "$actual" in
  89         $perms*)
  90                 : happy
  91                 ;;
  92         *)
  93                 echo "$(basename $2) is not $perms but $actual"
  94                 false
  95                 ;;
  96         esac
  97 }
  98
  99 for umask in 002 022
 100 do
 101         test_expect_success POSIXPERM 'init: honors core.sharedRepository' '
 102                 test_when_finished "rm -rf repo" &&
 103                 (
 104                         umask $umask &&
 105                         git init --shared=true repo &&
 106                         test 1 = "$(git -C repo config core.sharedrepository)"
 107                 ) &&
 108                 test_expect_perms "-rw-rw-r--" repo/.git/reftable/tables.list &&
 109                 for table in repo/.git/reftable/*.ref
 110                 do
 111                         test_expect_perms "-rw-rw-r--" "$table" ||
 112                         return 1
 113                 done
 114         '
 115 done
 116
 117 test_expect_success 'clone: can clone reftable repository' '
 118         test_when_finished "rm -rf repo clone" &&
 119         git init repo &&
 120         test_commit -C repo message1 file1 &&
 121
 122         git clone repo cloned &&
 123         echo reftable >expect &&
 124         git -C cloned rev-parse --show-ref-format >actual &&
 125         test_cmp expect actual &&
 126         test_path_is_file cloned/file1
 127 '
 128
 129 test_expect_success 'clone: can clone reffiles into reftable repository' '
 130         test_when_finished "rm -rf reffiles reftable" &&
 131         git init --ref-format=files reffiles &&
 132         test_commit -C reffiles A &&
 133         git clone --ref-format=reftable ./reffiles reftable &&
 134
 135         git -C reffiles rev-parse HEAD >expect &&
 136         git -C reftable rev-parse HEAD >actual &&
 137         test_cmp expect actual &&
 138
 139         git -C reftable rev-parse --show-ref-format >actual &&
 140         echo reftable >expect &&
 141         test_cmp expect actual &&
 142
 143         git -C reffiles rev-parse --show-ref-format >actual &&
 144         echo files >expect &&
 145         test_cmp expect actual
 146 '
 147
 148 test_expect_success 'clone: can clone reftable into reffiles repository' '
 149         test_when_finished "rm -rf reffiles reftable" &&
 150         git init --ref-format=reftable reftable &&
 151         test_commit -C reftable A &&
 152         git clone --ref-format=files ./reftable reffiles &&
 153
 154         git -C reftable rev-parse HEAD >expect &&
 155         git -C reffiles rev-parse HEAD >actual &&
 156         test_cmp expect actual &&
 157
 158         git -C reftable rev-parse --show-ref-format >actual &&
 159         echo reftable >expect &&
 160         test_cmp expect actual &&
 161
 162         git -C reffiles rev-parse --show-ref-format >actual &&
 163         echo files >expect &&
 164         test_cmp expect actual
 165 '
 166
 167 test_expect_success 'ref transaction: corrupted tables cause failure' '
 168         test_when_finished "rm -rf repo" &&
 169         git init repo &&
 170         (
 171                 cd repo &&
 172                 test_commit file1 &&
 173                 for f in .git/reftable/*.ref
 174                 do
 175                         : >"$f" || return 1
 176                 done &&
 177                 test_must_fail git update-ref refs/heads/main HEAD
 178         )
 179 '
 180
 181 test_expect_success 'ref transaction: corrupted tables.list cause failure' '
 182         test_when_finished "rm -rf repo" &&
 183         git init repo &&
 184         (
 185                 cd repo &&
 186                 test_commit file1 &&
 187                 echo garbage >.git/reftable/tables.list &&
 188                 test_must_fail git update-ref refs/heads/main HEAD
 189         )
 190 '
 191
 192 test_expect_success 'ref transaction: refuses to write ref causing F/D conflict' '
 193         test_when_finished "rm -rf repo" &&
 194         git init repo &&
 195         test_commit -C repo file &&
 196         test_must_fail git -C repo update-ref refs/heads/main/forbidden
 197 '
 198
 199 test_expect_success 'ref transaction: deleting ref with invalid name fails' '
 200         test_when_finished "rm -rf repo" &&
 201         git init repo &&
 202         test_commit -C repo file &&
 203         test_must_fail git -C repo update-ref -d ../../my-private-file
 204 '
 205
 206 test_expect_success 'ref transaction: can skip object ID verification' '
 207         test_when_finished "rm -rf repo" &&
 208         git init repo &&
 209         test_must_fail test-tool -C repo ref-store main update-ref msg refs/heads/branch $INVALID_OID $ZERO_OID 0 &&
 210         test-tool -C repo ref-store main update-ref msg refs/heads/branch $INVALID_OID $ZERO_OID REF_SKIP_OID_VERIFICATION
 211 '
 212
 213 test_expect_success 'ref transaction: updating same ref multiple times fails' '
 214         test_when_finished "rm -rf repo" &&
 215         git init repo &&
 216         test_commit -C repo A &&
 217         cat >updates <<-EOF &&
 218         update refs/heads/main $A
 219         update refs/heads/main $A
 220         EOF
 221         cat >expect <<-EOF &&
 222         fatal: multiple updates for ref ${SQ}refs/heads/main${SQ} not allowed
 223         EOF
 224         test_must_fail git -C repo update-ref --stdin <updates 2>err &&
 225         test_cmp expect err
 226 '
 227
 228 test_expect_success 'ref transaction: can delete symbolic self-reference with git-symbolic-ref(1)' '
 229         test_when_finished "rm -rf repo" &&
 230         git init repo &&
 231         git -C repo symbolic-ref refs/heads/self refs/heads/self &&
 232         git -C repo symbolic-ref -d refs/heads/self
 233 '
 234
 235 test_expect_success 'ref transaction: deleting symbolic self-reference without --no-deref fails' '
 236         test_when_finished "rm -rf repo" &&
 237         git init repo &&
 238         git -C repo symbolic-ref refs/heads/self refs/heads/self &&
 239         cat >expect <<-EOF &&
 240         error: multiple updates for ${SQ}refs/heads/self${SQ} (including one via symref ${SQ}refs/heads/self${SQ}) are not allowed
 241         EOF
 242         test_must_fail git -C repo update-ref -d refs/heads/self 2>err &&
 243         test_cmp expect err
 244 '
 245
 246 test_expect_success 'ref transaction: deleting symbolic self-reference with --no-deref succeeds' '
 247         test_when_finished "rm -rf repo" &&
 248         git init repo &&
 249         git -C repo symbolic-ref refs/heads/self refs/heads/self &&
 250         git -C repo update-ref -d --no-deref refs/heads/self
 251 '
 252
 253 test_expect_success 'ref transaction: creating symbolic ref fails with F/D conflict' '
 254         test_when_finished "rm -rf repo" &&
 255         git init repo &&
 256         test_commit -C repo A &&
 257         cat >expect <<-EOF &&
 258         error: unable to write symref for refs/heads: file/directory conflict
 259         EOF
 260         test_must_fail git -C repo symbolic-ref refs/heads refs/heads/foo 2>err &&
 261         test_cmp expect err
 262 '
 263
 264 test_expect_success 'ref transaction: ref deletion' '
 265         test_when_finished "rm -rf repo" &&
 266         git init repo &&
 267         (
 268                 cd repo &&
 269                 test_commit file &&
 270                 HEAD_OID=$(git show-ref -s --verify HEAD) &&
 271                 cat >expect <<-EOF &&
 272                 $HEAD_OID refs/heads/main
 273                 $HEAD_OID refs/tags/file
 274                 EOF
 275                 git show-ref >actual &&
 276                 test_cmp expect actual &&
 277
 278                 test_must_fail git update-ref -d refs/tags/file $INVALID_OID &&
 279                 git show-ref >actual &&
 280                 test_cmp expect actual &&
 281
 282                 git update-ref -d refs/tags/file $HEAD_OID &&
 283                 echo "$HEAD_OID refs/heads/main" >expect &&
 284                 git show-ref >actual &&
 285                 test_cmp expect actual
 286         )
 287 '
 288
 289 test_expect_success 'ref transaction: writes cause auto-compaction' '
 290         test_when_finished "rm -rf repo" &&
 291
 292         git init repo &&
 293         test_line_count = 1 repo/.git/reftable/tables.list &&
 294
 295         test_commit -C repo --no-tag A &&
 296         test_line_count = 2 repo/.git/reftable/tables.list &&
 297
 298         test_commit -C repo --no-tag B &&
 299         test_line_count = 1 repo/.git/reftable/tables.list
 300 '
 301
 302 check_fsync_events () {
 303         local trace="$1" &&
 304         shift &&
 305
 306         cat >expect &&
 307         sed -n \
 308                 -e '/^{"event":"counter",.*"category":"fsync",/ {
 309                         s/.*"category":"fsync",//;
 310                         s/}$//;
 311                         p;
 312                 }' \
 313                 <"$trace" >actual &&
 314         test_cmp expect actual
 315 }
 316
 317 test_expect_success 'ref transaction: writes are synced' '
 318         test_when_finished "rm -rf repo" &&
 319         git init repo &&
 320         test_commit -C repo initial &&
 321
 322         GIT_TRACE2_EVENT="$(pwd)/trace2.txt" \
 323         GIT_TEST_FSYNC=true \
 324                 git -C repo -c core.fsync=reference \
 325                 -c core.fsyncMethod=fsync update-ref refs/heads/branch HEAD &&
 326         check_fsync_events trace2.txt <<-EOF
 327         "name":"hardware-flush","count":2
 328         EOF
 329 '
 330
 331 test_expect_success 'pack-refs: compacts tables' '
 332         test_when_finished "rm -rf repo" &&
 333         git init repo &&
 334
 335         test_commit -C repo A &&
 336         ls -1 repo/.git/reftable >table-files &&
 337         test_line_count = 4 table-files &&
 338         test_line_count = 3 repo/.git/reftable/tables.list &&
 339
 340         git -C repo pack-refs &&
 341         ls -1 repo/.git/reftable >table-files &&
 342         test_line_count = 2 table-files &&
 343         test_line_count = 1 repo/.git/reftable/tables.list
 344 '
 345
 346 test_expect_success 'pack-refs: prunes stale tables' '
 347         test_when_finished "rm -rf repo" &&
 348         git init repo &&
 349         touch repo/.git/reftable/stale-table.ref &&
 350         git -C repo pack-refs &&
 351         test_path_is_missing repo/.git/reftable/stable-ref.ref
 352 '
 353
 354 test_expect_success 'pack-refs: does not prune non-table files' '
 355         test_when_finished "rm -rf repo" &&
 356         git init repo &&
 357         touch repo/.git/reftable/garbage &&
 358         git -C repo pack-refs &&
 359         test_path_is_file repo/.git/reftable/garbage
 360 '
 361
 362 for umask in 002 022
 363 do
 364         test_expect_success POSIXPERM 'pack-refs: honors core.sharedRepository' '
 365                 test_when_finished "rm -rf repo" &&
 366                 (
 367                         umask $umask &&
 368                         git init --shared=true repo &&
 369                         test_commit -C repo A &&
 370                         test_line_count = 3 repo/.git/reftable/tables.list
 371                 ) &&
 372                 git -C repo pack-refs &&
 373                 test_expect_perms "-rw-rw-r--" repo/.git/reftable/tables.list &&
 374                 for table in repo/.git/reftable/*.ref
 375                 do
 376                         test_expect_perms "-rw-rw-r--" "$table" ||
 377                         return 1
 378                 done
 379         '
 380 done
 381
 382 test_expect_success 'packed-refs: writes are synced' '
 383         test_when_finished "rm -rf repo" &&
 384         git init repo &&
 385         test_commit -C repo initial &&
 386         test_line_count = 2 table-files &&
 387
 388         : >trace2.txt &&
 389         GIT_TRACE2_EVENT="$(pwd)/trace2.txt" \
 390         GIT_TEST_FSYNC=true \
 391                 git -C repo -c core.fsync=reference \
 392                 -c core.fsyncMethod=fsync pack-refs &&
 393         check_fsync_events trace2.txt <<-EOF
 394         "name":"hardware-flush","count":2
 395         EOF
 396 '
 397
 398 test_expect_success 'ref iterator: bogus names are flagged' '
 399         test_when_finished "rm -rf repo" &&
 400         git init repo &&
 401         (
 402                 cd repo &&
 403                 test_commit --no-tag file &&
 404                 test-tool ref-store main update-ref msg "refs/heads/bogus..name" $(git rev-parse HEAD) $ZERO_OID REF_SKIP_REFNAME_VERIFICATION &&
 405
 406                 cat >expect <<-EOF &&
 407                 $ZERO_OID refs/heads/bogus..name 0xc
 408                 $(git rev-parse HEAD) refs/heads/main 0x0
 409                 EOF
 410                 test-tool ref-store main for-each-ref "" >actual &&
 411                 test_cmp expect actual
 412         )
 413 '
 414
 415 test_expect_success 'ref iterator: missing object IDs are not flagged' '
 416         test_when_finished "rm -rf repo" &&
 417         git init repo &&
 418         (
 419                 cd repo &&
 420                 test-tool ref-store main update-ref msg "refs/heads/broken-hash" $INVALID_OID $ZERO_OID REF_SKIP_OID_VERIFICATION &&
 421
 422                 cat >expect <<-EOF &&
 423                 $INVALID_OID refs/heads/broken-hash 0x0
 424                 EOF
 425                 test-tool ref-store main for-each-ref "" >actual &&
 426                 test_cmp expect actual
 427         )
 428 '
 429
 430 test_expect_success 'basic: commit and list refs' '
 431         test_when_finished "rm -rf repo" &&
 432         git init repo &&
 433         test_commit -C repo file &&
 434         test_write_lines refs/heads/main refs/tags/file >expect &&
 435         git -C repo for-each-ref --format="%(refname)" >actual &&
 436         test_cmp actual expect
 437 '
 438
 439 test_expect_success 'basic: can write large commit message' '
 440         test_when_finished "rm -rf repo" &&
 441         git init repo &&
 442         perl -e "
 443                 print \"this is a long commit message\" x 50000
 444         " >commit-msg &&
 445         git -C repo commit --allow-empty --file=../commit-msg
 446 '
 447
 448 test_expect_success 'basic: show-ref fails with empty repository' '
 449         test_when_finished "rm -rf repo" &&
 450         git init repo &&
 451         test_must_fail git -C repo show-ref >actual &&
 452         test_must_be_empty actual
 453 '
 454
 455 test_expect_success 'basic: can check out unborn branch' '
 456         test_when_finished "rm -rf repo" &&
 457         git init repo &&
 458         git -C repo checkout -b main
 459 '
 460
 461 test_expect_success 'basic: peeled tags are stored' '
 462         test_when_finished "rm -rf repo" &&
 463         git init repo &&
 464         test_commit -C repo file &&
 465         git -C repo tag -m "annotated tag" test_tag HEAD &&
 466         for ref in refs/heads/main refs/tags/file refs/tags/test_tag refs/tags/test_tag^{}
 467         do
 468                 echo "$(git -C repo rev-parse "$ref") $ref" || return 1
 469         done >expect &&
 470         git -C repo show-ref -d >actual &&
 471         test_cmp expect actual
 472 '
 473
 474 test_expect_success 'basic: for-each-ref can print symrefs' '
 475         test_when_finished "rm -rf repo" &&
 476         git init repo &&
 477         (
 478                 cd repo &&
 479                 test_commit file &&
 480                 git branch &&
 481                 git symbolic-ref refs/heads/sym refs/heads/main &&
 482                 cat >expected <<-EOF &&
 483                 refs/heads/main
 484                 EOF
 485                 git for-each-ref --format="%(symref)" refs/heads/sym >actual &&
 486                 test_cmp expected actual
 487         )
 488 '
 489
 490 test_expect_success 'basic: notes' '
 491         test_when_finished "rm -rf repo" &&
 492         git init repo &&
 493         (
 494                 write_script fake_editor <<-\EOF &&
 495                 echo "$MSG" >"$1"
 496                 echo "$MSG" >&2
 497                 EOF
 498
 499                 test_commit 1st &&
 500                 test_commit 2nd &&
 501                 GIT_EDITOR=./fake_editor MSG=b4 git notes add &&
 502                 GIT_EDITOR=./fake_editor MSG=b3 git notes edit &&
 503                 echo b4 >expect &&
 504                 git notes --ref commits@{1} show >actual &&
 505                 test_cmp expect actual
 506         )
 507 '
 508
 509 test_expect_success 'basic: stash' '
 510         test_when_finished "rm -rf repo" &&
 511         git init repo &&
 512         (
 513                 cd repo &&
 514                 test_commit file &&
 515                 git stash list >expect &&
 516                 test_line_count = 0 expect &&
 517
 518                 echo hoi >>file.t &&
 519                 git stash push -m stashed &&
 520                 git stash list >expect &&
 521                 test_line_count = 1 expect &&
 522
 523                 git stash clear &&
 524                 git stash list >expect &&
 525                 test_line_count = 0 expect
 526         )
 527 '
 528
 529 test_expect_success 'basic: cherry-pick' '
 530         test_when_finished "rm -rf repo" &&
 531         git init repo &&
 532         (
 533                 cd repo &&
 534                 test_commit message1 file1 &&
 535                 test_commit message2 file2 &&
 536                 git branch source &&
 537                 git checkout HEAD^ &&
 538                 test_commit message3 file3 &&
 539                 git cherry-pick source &&
 540                 test_path_is_file file2
 541         )
 542 '
 543
 544 test_expect_success 'basic: rebase' '
 545         test_when_finished "rm -rf repo" &&
 546         git init repo &&
 547         (
 548                 cd repo &&
 549                 test_commit message1 file1 &&
 550                 test_commit message2 file2 &&
 551                 git branch source &&
 552                 git checkout HEAD^ &&
 553                 test_commit message3 file3 &&
 554                 git rebase source &&
 555                 test_path_is_file file2
 556         )
 557 '
 558
 559 test_expect_success 'reflog: can delete separate reflog entries' '
 560         test_when_finished "rm -rf repo" &&
 561         git init repo &&
 562         (
 563                 cd repo &&
 564
 565                 test_commit file &&
 566                 test_commit file2 &&
 567                 test_commit file3 &&
 568                 test_commit file4 &&
 569                 git reflog >actual &&
 570                 grep file3 actual &&
 571
 572                 git reflog delete HEAD@{1} &&
 573                 git reflog >actual &&
 574                 ! grep file3 actual
 575         )
 576 '
 577
 578 test_expect_success 'reflog: can switch to previous branch' '
 579         test_when_finished "rm -rf repo" &&
 580         git init repo &&
 581         (
 582                 cd repo &&
 583                 test_commit file1 &&
 584                 git checkout -b branch1 &&
 585                 test_commit file2 &&
 586                 git checkout -b branch2 &&
 587                 git switch - &&
 588                 git rev-parse --symbolic-full-name HEAD >actual &&
 589                 echo refs/heads/branch1 >expect &&
 590                 test_cmp actual expect
 591         )
 592 '
 593
 594 test_expect_success 'reflog: copying branch writes reflog entry' '
 595         test_when_finished "rm -rf repo" &&
 596         git init repo &&
 597         (
 598                 cd repo &&
 599                 test_commit file1 &&
 600                 test_commit file2 &&
 601                 oid=$(git rev-parse --short HEAD) &&
 602                 git branch src &&
 603                 cat >expect <<-EOF &&
 604                 ${oid} dst@{0}: Branch: copied refs/heads/src to refs/heads/dst
 605                 ${oid} dst@{1}: branch: Created from main
 606                 EOF
 607                 git branch -c src dst &&
 608                 git reflog dst >actual &&
 609                 test_cmp expect actual
 610         )
 611 '
 612
 613 test_expect_success 'reflog: renaming branch writes reflog entry' '
 614         test_when_finished "rm -rf repo" &&
 615         git init repo &&
 616         (
 617                 cd repo &&
 618                 git symbolic-ref HEAD refs/heads/before &&
 619                 test_commit file &&
 620                 git show-ref >expected.refs &&
 621                 sed s/before/after/g <expected.refs >expected &&
 622                 git branch -M after &&
 623                 git show-ref >actual &&
 624                 test_cmp expected actual &&
 625                 echo refs/heads/after >expected &&
 626                 git symbolic-ref HEAD >actual &&
 627                 test_cmp expected actual
 628         )
 629 '
 630
 631 test_expect_success 'reflog: can store empty logs' '
 632         test_when_finished "rm -rf repo" &&
 633         git init repo &&
 634         (
 635                 cd repo &&
 636
 637                 test_must_fail test-tool ref-store main reflog-exists refs/heads/branch &&
 638                 test-tool ref-store main create-reflog refs/heads/branch &&
 639                 test-tool ref-store main reflog-exists refs/heads/branch &&
 640                 test-tool ref-store main for-each-reflog-ent-reverse refs/heads/branch >actual &&
 641                 test_must_be_empty actual
 642         )
 643 '
 644
 645 test_expect_success 'reflog: expiry empties reflog' '
 646         test_when_finished "rm -rf repo" &&
 647         git init repo &&
 648         (
 649                 cd repo &&
 650
 651                 test_commit initial &&
 652                 git checkout -b branch &&
 653                 test_commit fileA &&
 654                 test_commit fileB &&
 655
 656                 cat >expect <<-EOF &&
 657                 commit: fileB
 658                 commit: fileA
 659                 branch: Created from HEAD
 660                 EOF
 661                 git reflog show --format="%gs" refs/heads/branch >actual &&
 662                 test_cmp expect actual &&
 663
 664                 git reflog expire branch --expire=all &&
 665                 git reflog show --format="%gs" refs/heads/branch >actual &&
 666                 test_must_be_empty actual &&
 667                 test-tool ref-store main reflog-exists refs/heads/branch
 668         )
 669 '
 670
 671 test_expect_success 'reflog: can be deleted' '
 672         test_when_finished "rm -rf repo" &&
 673         git init repo &&
 674         (
 675                 cd repo &&
 676                 test_commit initial &&
 677                 test-tool ref-store main reflog-exists refs/heads/main &&
 678                 test-tool ref-store main delete-reflog refs/heads/main &&
 679                 test_must_fail test-tool ref-store main reflog-exists refs/heads/main
 680         )
 681 '
 682
 683 test_expect_success 'reflog: garbage collection deletes reflog entries' '
 684         test_when_finished "rm -rf repo" &&
 685         git init repo &&
 686         (
 687                 cd repo &&
 688
 689                 for count in $(test_seq 1 10)
 690                 do
 691                         test_commit "number $count" file.t $count number-$count ||
 692                         return 1
 693                 done &&
 694                 git reflog refs/heads/main >actual &&
 695                 test_line_count = 10 actual &&
 696                 grep "commit (initial): number 1" actual &&
 697                 grep "commit: number 10" actual &&
 698
 699                 git gc &&
 700                 git reflog refs/heads/main >actual &&
 701                 test_line_count = 0 actual
 702         )
 703 '
 704
 705 test_expect_success 'reflog: updates via HEAD update HEAD reflog' '
 706         test_when_finished "rm -rf repo" &&
 707         git init repo &&
 708         (
 709                 cd repo &&
 710                 test_commit main-one &&
 711                 git checkout -b new-branch &&
 712                 test_commit new-one &&
 713                 test_commit new-two &&
 714
 715                 echo new-one >expect &&
 716                 git log -1 --format=%s HEAD@{1} >actual &&
 717                 test_cmp expect actual
 718         )
 719 '
 720
 721 test_expect_success 'worktree: adding worktree creates separate stack' '
 722         test_when_finished "rm -rf repo worktree" &&
 723         git init repo &&
 724         test_commit -C repo A &&
 725
 726         git -C repo worktree add ../worktree &&
 727         test_path_is_file repo/.git/worktrees/worktree/refs/heads &&
 728         echo "ref: refs/heads/.invalid" >expect &&
 729         test_cmp expect repo/.git/worktrees/worktree/HEAD &&
 730         test_path_is_dir repo/.git/worktrees/worktree/reftable &&
 731         test_path_is_file repo/.git/worktrees/worktree/reftable/tables.list
 732 '
 733
 734 test_expect_success 'worktree: pack-refs in main repo packs main refs' '
 735         test_when_finished "rm -rf repo worktree" &&
 736         git init repo &&
 737         test_commit -C repo A &&
 738         git -C repo worktree add ../worktree &&
 739
 740         test_line_count = 3 repo/.git/worktrees/worktree/reftable/tables.list &&
 741         test_line_count = 4 repo/.git/reftable/tables.list &&
 742         git -C repo pack-refs &&
 743         test_line_count = 3 repo/.git/worktrees/worktree/reftable/tables.list &&
 744         test_line_count = 1 repo/.git/reftable/tables.list
 745 '
 746
 747 test_expect_success 'worktree: pack-refs in worktree packs worktree refs' '
 748         test_when_finished "rm -rf repo worktree" &&
 749         git init repo &&
 750         test_commit -C repo A &&
 751         git -C repo worktree add ../worktree &&
 752
 753         test_line_count = 3 repo/.git/worktrees/worktree/reftable/tables.list &&
 754         test_line_count = 4 repo/.git/reftable/tables.list &&
 755         git -C worktree pack-refs &&
 756         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 757         test_line_count = 4 repo/.git/reftable/tables.list
 758 '
 759
 760 test_expect_success 'worktree: creating shared ref updates main stack' '
 761         test_when_finished "rm -rf repo worktree" &&
 762         git init repo &&
 763         test_commit -C repo A &&
 764
 765         git -C repo worktree add ../worktree &&
 766         git -C repo pack-refs &&
 767         git -C worktree pack-refs &&
 768         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 769         test_line_count = 1 repo/.git/reftable/tables.list &&
 770
 771         git -C worktree update-ref refs/heads/shared HEAD &&
 772         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 773         test_line_count = 2 repo/.git/reftable/tables.list
 774 '
 775
 776 test_expect_success 'worktree: creating per-worktree ref updates worktree stack' '
 777         test_when_finished "rm -rf repo worktree" &&
 778         git init repo &&
 779         test_commit -C repo A &&
 780
 781         git -C repo worktree add ../worktree &&
 782         git -C repo pack-refs &&
 783         git -C worktree pack-refs &&
 784         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 785         test_line_count = 1 repo/.git/reftable/tables.list &&
 786
 787         git -C worktree update-ref refs/bisect/per-worktree HEAD &&
 788         test_line_count = 2 repo/.git/worktrees/worktree/reftable/tables.list &&
 789         test_line_count = 1 repo/.git/reftable/tables.list
 790 '
 791
 792 test_expect_success 'worktree: creating per-worktree ref from main repo' '
 793         test_when_finished "rm -rf repo worktree" &&
 794         git init repo &&
 795         test_commit -C repo A &&
 796
 797         git -C repo worktree add ../worktree &&
 798         git -C repo pack-refs &&
 799         git -C worktree pack-refs &&
 800         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 801         test_line_count = 1 repo/.git/reftable/tables.list &&
 802
 803         git -C repo update-ref worktrees/worktree/refs/bisect/per-worktree HEAD &&
 804         test_line_count = 2 repo/.git/worktrees/worktree/reftable/tables.list &&
 805         test_line_count = 1 repo/.git/reftable/tables.list
 806 '
 807
 808 test_expect_success 'worktree: creating per-worktree ref from second worktree' '
 809         test_when_finished "rm -rf repo wt1 wt2" &&
 810         git init repo &&
 811         test_commit -C repo A &&
 812
 813         git -C repo worktree add ../wt1 &&
 814         git -C repo worktree add ../wt2 &&
 815         git -C repo pack-refs &&
 816         git -C wt1 pack-refs &&
 817         git -C wt2 pack-refs &&
 818         test_line_count = 1 repo/.git/worktrees/wt1/reftable/tables.list &&
 819         test_line_count = 1 repo/.git/worktrees/wt2/reftable/tables.list &&
 820         test_line_count = 1 repo/.git/reftable/tables.list &&
 821
 822         git -C wt1 update-ref worktrees/wt2/refs/bisect/per-worktree HEAD &&
 823         test_line_count = 1 repo/.git/worktrees/wt1/reftable/tables.list &&
 824         test_line_count = 2 repo/.git/worktrees/wt2/reftable/tables.list &&
 825         test_line_count = 1 repo/.git/reftable/tables.list
 826 '
 827
 828 test_expect_success 'worktree: can create shared and per-worktree ref in one transaction' '
 829         test_when_finished "rm -rf repo worktree" &&
 830         git init repo &&
 831         test_commit -C repo A &&
 832
 833         git -C repo worktree add ../worktree &&
 834         git -C repo pack-refs &&
 835         git -C worktree pack-refs &&
 836         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 837         test_line_count = 1 repo/.git/reftable/tables.list &&
 838
 839         cat >stdin <<-EOF &&
 840         create worktrees/worktree/refs/bisect/per-worktree HEAD
 841         create refs/branches/shared HEAD
 842         EOF
 843         git -C repo update-ref --stdin <stdin &&
 844         test_line_count = 2 repo/.git/worktrees/worktree/reftable/tables.list &&
 845         test_line_count = 2 repo/.git/reftable/tables.list
 846 '
 847
 848 test_expect_success 'worktree: can access common refs' '
 849         test_when_finished "rm -rf repo worktree" &&
 850         git init repo &&
 851         test_commit -C repo file1 &&
 852         git -C repo branch branch1 &&
 853         git -C repo worktree add ../worktree &&
 854
 855         echo refs/heads/worktree >expect &&
 856         git -C worktree symbolic-ref HEAD >actual &&
 857         test_cmp expect actual &&
 858         git -C worktree checkout branch1
 859 '
 860
 861 test_expect_success 'worktree: adds worktree with detached HEAD' '
 862         test_when_finished "rm -rf repo worktree" &&
 863
 864         git init repo &&
 865         test_commit -C repo A &&
 866         git -C repo rev-parse main >expect &&
 867
 868         git -C repo worktree add --detach ../worktree main &&
 869         git -C worktree rev-parse HEAD >actual &&
 870         test_cmp expect actual
 871 '
 872
 873 test_expect_success 'fetch: accessing FETCH_HEAD special ref works' '
 874         test_when_finished "rm -rf repo sub" &&
 875
 876         git init sub &&
 877         test_commit -C sub two &&
 878         git -C sub rev-parse HEAD >expect &&
 879
 880         git init repo &&
 881         test_commit -C repo one &&
 882         git -C repo fetch ../sub &&
 883         git -C repo rev-parse FETCH_HEAD >actual &&
 884         test_cmp expect actual
 885 '
 886
 887 test_done