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 'ref transaction: empty transaction in empty repo' '
 332         test_when_finished "rm -rf repo" &&
 333         git init repo &&
 334         test_commit -C repo --no-tag A &&
 335         COMMIT=$(git -C repo rev-parse HEAD) &&
 336         git -C repo update-ref -d refs/heads/main &&
 337         test-tool -C repo ref-store main delete-refs REF_NO_DEREF msg HEAD &&
 338         git -C repo update-ref --stdin <<-EOF
 339         prepare
 340         commit
 341         EOF
 342 '
 343
 344 test_expect_success 'pack-refs: compacts tables' '
 345         test_when_finished "rm -rf repo" &&
 346         git init repo &&
 347
 348         test_commit -C repo A &&
 349         ls -1 repo/.git/reftable >table-files &&
 350         test_line_count = 4 table-files &&
 351         test_line_count = 3 repo/.git/reftable/tables.list &&
 352
 353         git -C repo pack-refs &&
 354         ls -1 repo/.git/reftable >table-files &&
 355         test_line_count = 2 table-files &&
 356         test_line_count = 1 repo/.git/reftable/tables.list
 357 '
 358
 359 test_expect_success 'pack-refs: prunes stale tables' '
 360         test_when_finished "rm -rf repo" &&
 361         git init repo &&
 362         touch repo/.git/reftable/stale-table.ref &&
 363         git -C repo pack-refs &&
 364         test_path_is_missing repo/.git/reftable/stable-ref.ref
 365 '
 366
 367 test_expect_success 'pack-refs: does not prune non-table files' '
 368         test_when_finished "rm -rf repo" &&
 369         git init repo &&
 370         touch repo/.git/reftable/garbage &&
 371         git -C repo pack-refs &&
 372         test_path_is_file repo/.git/reftable/garbage
 373 '
 374
 375 for umask in 002 022
 376 do
 377         test_expect_success POSIXPERM 'pack-refs: honors core.sharedRepository' '
 378                 test_when_finished "rm -rf repo" &&
 379                 (
 380                         umask $umask &&
 381                         git init --shared=true repo &&
 382                         test_commit -C repo A &&
 383                         test_line_count = 3 repo/.git/reftable/tables.list
 384                 ) &&
 385                 git -C repo pack-refs &&
 386                 test_expect_perms "-rw-rw-r--" repo/.git/reftable/tables.list &&
 387                 for table in repo/.git/reftable/*.ref
 388                 do
 389                         test_expect_perms "-rw-rw-r--" "$table" ||
 390                         return 1
 391                 done
 392         '
 393 done
 394
 395 test_expect_success 'packed-refs: writes are synced' '
 396         test_when_finished "rm -rf repo" &&
 397         git init repo &&
 398         test_commit -C repo initial &&
 399         test_line_count = 2 table-files &&
 400
 401         : >trace2.txt &&
 402         GIT_TRACE2_EVENT="$(pwd)/trace2.txt" \
 403         GIT_TEST_FSYNC=true \
 404                 git -C repo -c core.fsync=reference \
 405                 -c core.fsyncMethod=fsync pack-refs &&
 406         check_fsync_events trace2.txt <<-EOF
 407         "name":"hardware-flush","count":2
 408         EOF
 409 '
 410
 411 test_expect_success 'ref iterator: bogus names are flagged' '
 412         test_when_finished "rm -rf repo" &&
 413         git init repo &&
 414         (
 415                 cd repo &&
 416                 test_commit --no-tag file &&
 417                 test-tool ref-store main update-ref msg "refs/heads/bogus..name" $(git rev-parse HEAD) $ZERO_OID REF_SKIP_REFNAME_VERIFICATION &&
 418
 419                 cat >expect <<-EOF &&
 420                 $ZERO_OID refs/heads/bogus..name 0xc
 421                 $(git rev-parse HEAD) refs/heads/main 0x0
 422                 EOF
 423                 test-tool ref-store main for-each-ref "" >actual &&
 424                 test_cmp expect actual
 425         )
 426 '
 427
 428 test_expect_success 'ref iterator: missing object IDs are not flagged' '
 429         test_when_finished "rm -rf repo" &&
 430         git init repo &&
 431         (
 432                 cd repo &&
 433                 test-tool ref-store main update-ref msg "refs/heads/broken-hash" $INVALID_OID $ZERO_OID REF_SKIP_OID_VERIFICATION &&
 434
 435                 cat >expect <<-EOF &&
 436                 $INVALID_OID refs/heads/broken-hash 0x0
 437                 EOF
 438                 test-tool ref-store main for-each-ref "" >actual &&
 439                 test_cmp expect actual
 440         )
 441 '
 442
 443 test_expect_success 'basic: commit and list refs' '
 444         test_when_finished "rm -rf repo" &&
 445         git init repo &&
 446         test_commit -C repo file &&
 447         test_write_lines refs/heads/main refs/tags/file >expect &&
 448         git -C repo for-each-ref --format="%(refname)" >actual &&
 449         test_cmp actual expect
 450 '
 451
 452 test_expect_success 'basic: can write large commit message' '
 453         test_when_finished "rm -rf repo" &&
 454         git init repo &&
 455         perl -e "
 456                 print \"this is a long commit message\" x 50000
 457         " >commit-msg &&
 458         git -C repo commit --allow-empty --file=../commit-msg
 459 '
 460
 461 test_expect_success 'basic: show-ref fails with empty repository' '
 462         test_when_finished "rm -rf repo" &&
 463         git init repo &&
 464         test_must_fail git -C repo show-ref >actual &&
 465         test_must_be_empty actual
 466 '
 467
 468 test_expect_success 'basic: can check out unborn branch' '
 469         test_when_finished "rm -rf repo" &&
 470         git init repo &&
 471         git -C repo checkout -b main
 472 '
 473
 474 test_expect_success 'basic: peeled tags are stored' '
 475         test_when_finished "rm -rf repo" &&
 476         git init repo &&
 477         test_commit -C repo file &&
 478         git -C repo tag -m "annotated tag" test_tag HEAD &&
 479         for ref in refs/heads/main refs/tags/file refs/tags/test_tag refs/tags/test_tag^{}
 480         do
 481                 echo "$(git -C repo rev-parse "$ref") $ref" || return 1
 482         done >expect &&
 483         git -C repo show-ref -d >actual &&
 484         test_cmp expect actual
 485 '
 486
 487 test_expect_success 'basic: for-each-ref can print symrefs' '
 488         test_when_finished "rm -rf repo" &&
 489         git init repo &&
 490         (
 491                 cd repo &&
 492                 test_commit file &&
 493                 git branch &&
 494                 git symbolic-ref refs/heads/sym refs/heads/main &&
 495                 cat >expected <<-EOF &&
 496                 refs/heads/main
 497                 EOF
 498                 git for-each-ref --format="%(symref)" refs/heads/sym >actual &&
 499                 test_cmp expected actual
 500         )
 501 '
 502
 503 test_expect_success 'basic: notes' '
 504         test_when_finished "rm -rf repo" &&
 505         git init repo &&
 506         (
 507                 write_script fake_editor <<-\EOF &&
 508                 echo "$MSG" >"$1"
 509                 echo "$MSG" >&2
 510                 EOF
 511
 512                 test_commit 1st &&
 513                 test_commit 2nd &&
 514                 GIT_EDITOR=./fake_editor MSG=b4 git notes add &&
 515                 GIT_EDITOR=./fake_editor MSG=b3 git notes edit &&
 516                 echo b4 >expect &&
 517                 git notes --ref commits@{1} show >actual &&
 518                 test_cmp expect actual
 519         )
 520 '
 521
 522 test_expect_success 'basic: stash' '
 523         test_when_finished "rm -rf repo" &&
 524         git init repo &&
 525         (
 526                 cd repo &&
 527                 test_commit file &&
 528                 git stash list >expect &&
 529                 test_line_count = 0 expect &&
 530
 531                 echo hoi >>file.t &&
 532                 git stash push -m stashed &&
 533                 git stash list >expect &&
 534                 test_line_count = 1 expect &&
 535
 536                 git stash clear &&
 537                 git stash list >expect &&
 538                 test_line_count = 0 expect
 539         )
 540 '
 541
 542 test_expect_success 'basic: cherry-pick' '
 543         test_when_finished "rm -rf repo" &&
 544         git init repo &&
 545         (
 546                 cd repo &&
 547                 test_commit message1 file1 &&
 548                 test_commit message2 file2 &&
 549                 git branch source &&
 550                 git checkout HEAD^ &&
 551                 test_commit message3 file3 &&
 552                 git cherry-pick source &&
 553                 test_path_is_file file2
 554         )
 555 '
 556
 557 test_expect_success 'basic: rebase' '
 558         test_when_finished "rm -rf repo" &&
 559         git init repo &&
 560         (
 561                 cd repo &&
 562                 test_commit message1 file1 &&
 563                 test_commit message2 file2 &&
 564                 git branch source &&
 565                 git checkout HEAD^ &&
 566                 test_commit message3 file3 &&
 567                 git rebase source &&
 568                 test_path_is_file file2
 569         )
 570 '
 571
 572 test_expect_success 'reflog: can delete separate reflog entries' '
 573         test_when_finished "rm -rf repo" &&
 574         git init repo &&
 575         (
 576                 cd repo &&
 577
 578                 test_commit file &&
 579                 test_commit file2 &&
 580                 test_commit file3 &&
 581                 test_commit file4 &&
 582                 git reflog >actual &&
 583                 grep file3 actual &&
 584
 585                 git reflog delete HEAD@{1} &&
 586                 git reflog >actual &&
 587                 ! grep file3 actual
 588         )
 589 '
 590
 591 test_expect_success 'reflog: can switch to previous branch' '
 592         test_when_finished "rm -rf repo" &&
 593         git init repo &&
 594         (
 595                 cd repo &&
 596                 test_commit file1 &&
 597                 git checkout -b branch1 &&
 598                 test_commit file2 &&
 599                 git checkout -b branch2 &&
 600                 git switch - &&
 601                 git rev-parse --symbolic-full-name HEAD >actual &&
 602                 echo refs/heads/branch1 >expect &&
 603                 test_cmp actual expect
 604         )
 605 '
 606
 607 test_expect_success 'reflog: copying branch writes reflog entry' '
 608         test_when_finished "rm -rf repo" &&
 609         git init repo &&
 610         (
 611                 cd repo &&
 612                 test_commit file1 &&
 613                 test_commit file2 &&
 614                 oid=$(git rev-parse --short HEAD) &&
 615                 git branch src &&
 616                 cat >expect <<-EOF &&
 617                 ${oid} dst@{0}: Branch: copied refs/heads/src to refs/heads/dst
 618                 ${oid} dst@{1}: branch: Created from main
 619                 EOF
 620                 git branch -c src dst &&
 621                 git reflog dst >actual &&
 622                 test_cmp expect actual
 623         )
 624 '
 625
 626 test_expect_success 'reflog: renaming branch writes reflog entry' '
 627         test_when_finished "rm -rf repo" &&
 628         git init repo &&
 629         (
 630                 cd repo &&
 631                 git symbolic-ref HEAD refs/heads/before &&
 632                 test_commit file &&
 633                 git show-ref >expected.refs &&
 634                 sed s/before/after/g <expected.refs >expected &&
 635                 git branch -M after &&
 636                 git show-ref >actual &&
 637                 test_cmp expected actual &&
 638                 echo refs/heads/after >expected &&
 639                 git symbolic-ref HEAD >actual &&
 640                 test_cmp expected actual
 641         )
 642 '
 643
 644 test_expect_success 'reflog: can store empty logs' '
 645         test_when_finished "rm -rf repo" &&
 646         git init repo &&
 647         (
 648                 cd repo &&
 649
 650                 test_must_fail test-tool ref-store main reflog-exists refs/heads/branch &&
 651                 test-tool ref-store main create-reflog refs/heads/branch &&
 652                 test-tool ref-store main reflog-exists refs/heads/branch &&
 653                 test-tool ref-store main for-each-reflog-ent-reverse refs/heads/branch >actual &&
 654                 test_must_be_empty actual
 655         )
 656 '
 657
 658 test_expect_success 'reflog: expiry empties reflog' '
 659         test_when_finished "rm -rf repo" &&
 660         git init repo &&
 661         (
 662                 cd repo &&
 663
 664                 test_commit initial &&
 665                 git checkout -b branch &&
 666                 test_commit fileA &&
 667                 test_commit fileB &&
 668
 669                 cat >expect <<-EOF &&
 670                 commit: fileB
 671                 commit: fileA
 672                 branch: Created from HEAD
 673                 EOF
 674                 git reflog show --format="%gs" refs/heads/branch >actual &&
 675                 test_cmp expect actual &&
 676
 677                 git reflog expire branch --expire=all &&
 678                 git reflog show --format="%gs" refs/heads/branch >actual &&
 679                 test_must_be_empty actual &&
 680                 test-tool ref-store main reflog-exists refs/heads/branch
 681         )
 682 '
 683
 684 test_expect_success 'reflog: can be deleted' '
 685         test_when_finished "rm -rf repo" &&
 686         git init repo &&
 687         (
 688                 cd repo &&
 689                 test_commit initial &&
 690                 test-tool ref-store main reflog-exists refs/heads/main &&
 691                 test-tool ref-store main delete-reflog refs/heads/main &&
 692                 test_must_fail test-tool ref-store main reflog-exists refs/heads/main
 693         )
 694 '
 695
 696 test_expect_success 'reflog: garbage collection deletes reflog entries' '
 697         test_when_finished "rm -rf repo" &&
 698         git init repo &&
 699         (
 700                 cd repo &&
 701
 702                 for count in $(test_seq 1 10)
 703                 do
 704                         test_commit "number $count" file.t $count number-$count ||
 705                         return 1
 706                 done &&
 707                 git reflog refs/heads/main >actual &&
 708                 test_line_count = 10 actual &&
 709                 grep "commit (initial): number 1" actual &&
 710                 grep "commit: number 10" actual &&
 711
 712                 git gc &&
 713                 git reflog refs/heads/main >actual &&
 714                 test_line_count = 0 actual
 715         )
 716 '
 717
 718 test_expect_success 'reflog: updates via HEAD update HEAD reflog' '
 719         test_when_finished "rm -rf repo" &&
 720         git init repo &&
 721         (
 722                 cd repo &&
 723                 test_commit main-one &&
 724                 git checkout -b new-branch &&
 725                 test_commit new-one &&
 726                 test_commit new-two &&
 727
 728                 echo new-one >expect &&
 729                 git log -1 --format=%s HEAD@{1} >actual &&
 730                 test_cmp expect actual
 731         )
 732 '
 733
 734 test_expect_success 'worktree: adding worktree creates separate stack' '
 735         test_when_finished "rm -rf repo worktree" &&
 736         git init repo &&
 737         test_commit -C repo A &&
 738
 739         git -C repo worktree add ../worktree &&
 740         test_path_is_file repo/.git/worktrees/worktree/refs/heads &&
 741         echo "ref: refs/heads/.invalid" >expect &&
 742         test_cmp expect repo/.git/worktrees/worktree/HEAD &&
 743         test_path_is_dir repo/.git/worktrees/worktree/reftable &&
 744         test_path_is_file repo/.git/worktrees/worktree/reftable/tables.list
 745 '
 746
 747 test_expect_success 'worktree: pack-refs in main repo packs main 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 repo pack-refs &&
 756         test_line_count = 3 repo/.git/worktrees/worktree/reftable/tables.list &&
 757         test_line_count = 1 repo/.git/reftable/tables.list
 758 '
 759
 760 test_expect_success 'worktree: pack-refs in worktree packs worktree refs' '
 761         test_when_finished "rm -rf repo worktree" &&
 762         git init repo &&
 763         test_commit -C repo A &&
 764         git -C repo worktree add ../worktree &&
 765
 766         test_line_count = 3 repo/.git/worktrees/worktree/reftable/tables.list &&
 767         test_line_count = 4 repo/.git/reftable/tables.list &&
 768         git -C worktree pack-refs &&
 769         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 770         test_line_count = 4 repo/.git/reftable/tables.list
 771 '
 772
 773 test_expect_success 'worktree: creating shared ref updates main stack' '
 774         test_when_finished "rm -rf repo worktree" &&
 775         git init repo &&
 776         test_commit -C repo A &&
 777
 778         git -C repo worktree add ../worktree &&
 779         git -C repo pack-refs &&
 780         git -C worktree pack-refs &&
 781         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 782         test_line_count = 1 repo/.git/reftable/tables.list &&
 783
 784         git -C worktree update-ref refs/heads/shared HEAD &&
 785         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 786         test_line_count = 2 repo/.git/reftable/tables.list
 787 '
 788
 789 test_expect_success 'worktree: creating per-worktree ref updates worktree stack' '
 790         test_when_finished "rm -rf repo worktree" &&
 791         git init repo &&
 792         test_commit -C repo A &&
 793
 794         git -C repo worktree add ../worktree &&
 795         git -C repo pack-refs &&
 796         git -C worktree pack-refs &&
 797         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 798         test_line_count = 1 repo/.git/reftable/tables.list &&
 799
 800         git -C worktree update-ref refs/bisect/per-worktree HEAD &&
 801         test_line_count = 2 repo/.git/worktrees/worktree/reftable/tables.list &&
 802         test_line_count = 1 repo/.git/reftable/tables.list
 803 '
 804
 805 test_expect_success 'worktree: creating per-worktree ref from main repo' '
 806         test_when_finished "rm -rf repo worktree" &&
 807         git init repo &&
 808         test_commit -C repo A &&
 809
 810         git -C repo worktree add ../worktree &&
 811         git -C repo pack-refs &&
 812         git -C worktree pack-refs &&
 813         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 814         test_line_count = 1 repo/.git/reftable/tables.list &&
 815
 816         git -C repo update-ref worktrees/worktree/refs/bisect/per-worktree HEAD &&
 817         test_line_count = 2 repo/.git/worktrees/worktree/reftable/tables.list &&
 818         test_line_count = 1 repo/.git/reftable/tables.list
 819 '
 820
 821 test_expect_success 'worktree: creating per-worktree ref from second worktree' '
 822         test_when_finished "rm -rf repo wt1 wt2" &&
 823         git init repo &&
 824         test_commit -C repo A &&
 825
 826         git -C repo worktree add ../wt1 &&
 827         git -C repo worktree add ../wt2 &&
 828         git -C repo pack-refs &&
 829         git -C wt1 pack-refs &&
 830         git -C wt2 pack-refs &&
 831         test_line_count = 1 repo/.git/worktrees/wt1/reftable/tables.list &&
 832         test_line_count = 1 repo/.git/worktrees/wt2/reftable/tables.list &&
 833         test_line_count = 1 repo/.git/reftable/tables.list &&
 834
 835         git -C wt1 update-ref worktrees/wt2/refs/bisect/per-worktree HEAD &&
 836         test_line_count = 1 repo/.git/worktrees/wt1/reftable/tables.list &&
 837         test_line_count = 2 repo/.git/worktrees/wt2/reftable/tables.list &&
 838         test_line_count = 1 repo/.git/reftable/tables.list
 839 '
 840
 841 test_expect_success 'worktree: can create shared and per-worktree ref in one transaction' '
 842         test_when_finished "rm -rf repo worktree" &&
 843         git init repo &&
 844         test_commit -C repo A &&
 845
 846         git -C repo worktree add ../worktree &&
 847         git -C repo pack-refs &&
 848         git -C worktree pack-refs &&
 849         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 850         test_line_count = 1 repo/.git/reftable/tables.list &&
 851
 852         cat >stdin <<-EOF &&
 853         create worktrees/worktree/refs/bisect/per-worktree HEAD
 854         create refs/branches/shared HEAD
 855         EOF
 856         git -C repo update-ref --stdin <stdin &&
 857         test_line_count = 2 repo/.git/worktrees/worktree/reftable/tables.list &&
 858         test_line_count = 2 repo/.git/reftable/tables.list
 859 '
 860
 861 test_expect_success 'worktree: can access common refs' '
 862         test_when_finished "rm -rf repo worktree" &&
 863         git init repo &&
 864         test_commit -C repo file1 &&
 865         git -C repo branch branch1 &&
 866         git -C repo worktree add ../worktree &&
 867
 868         echo refs/heads/worktree >expect &&
 869         git -C worktree symbolic-ref HEAD >actual &&
 870         test_cmp expect actual &&
 871         git -C worktree checkout branch1
 872 '
 873
 874 test_expect_success 'worktree: adds worktree with detached HEAD' '
 875         test_when_finished "rm -rf repo worktree" &&
 876
 877         git init repo &&
 878         test_commit -C repo A &&
 879         git -C repo rev-parse main >expect &&
 880
 881         git -C repo worktree add --detach ../worktree main &&
 882         git -C worktree rev-parse HEAD >actual &&
 883         test_cmp expect actual
 884 '
 885
 886 test_expect_success 'fetch: accessing FETCH_HEAD special ref works' '
 887         test_when_finished "rm -rf repo sub" &&
 888
 889         git init sub &&
 890         test_commit -C sub two &&
 891         git -C sub rev-parse HEAD >expect &&
 892
 893         git init repo &&
 894         test_commit -C repo one &&
 895         git -C repo fetch ../sub &&
 896         git -C repo rev-parse FETCH_HEAD >actual &&
 897         test_cmp expect actual
 898 '
 899
 900 test_done