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         git -C repo update-ref -d refs/heads/main &&
 336         test-tool -C repo ref-store main delete-refs REF_NO_DEREF msg HEAD &&
 337         git -C repo update-ref --stdin <<-EOF
 338         prepare
 339         commit
 340         EOF
 341 '
 342
 343 test_expect_success 'ref transaction: fails gracefully when auto compaction fails' '
 344         test_when_finished "rm -rf repo" &&
 345         git init repo &&
 346         (
 347                 cd repo &&
 348
 349                 test_commit A &&
 350                 for i in $(test_seq 10)
 351                 do
 352                         git branch branch-$i &&
 353                         for table in .git/reftable/*.ref
 354                         do
 355                                 touch "$table.lock" || exit 1
 356                         done ||
 357                         exit 1
 358                 done &&
 359                 test_line_count = 13 .git/reftable/tables.list
 360         )
 361 '
 362
 363 test_expect_success 'pack-refs: compacts tables' '
 364         test_when_finished "rm -rf repo" &&
 365         git init repo &&
 366
 367         test_commit -C repo A &&
 368         ls -1 repo/.git/reftable >table-files &&
 369         test_line_count = 4 table-files &&
 370         test_line_count = 3 repo/.git/reftable/tables.list &&
 371
 372         git -C repo pack-refs &&
 373         ls -1 repo/.git/reftable >table-files &&
 374         test_line_count = 2 table-files &&
 375         test_line_count = 1 repo/.git/reftable/tables.list
 376 '
 377
 378 test_expect_success 'pack-refs: compaction raises locking errors' '
 379         test_when_finished "rm -rf repo" &&
 380         git init repo &&
 381         test_commit -C repo A &&
 382         touch repo/.git/reftable/tables.list.lock &&
 383         cat >expect <<-EOF &&
 384         error: unable to compact stack: data is locked
 385         EOF
 386         test_must_fail git -C repo pack-refs 2>err &&
 387         test_cmp expect err
 388 '
 389
 390 test_expect_success 'pack-refs: prunes stale tables' '
 391         test_when_finished "rm -rf repo" &&
 392         git init repo &&
 393         touch repo/.git/reftable/stale-table.ref &&
 394         git -C repo pack-refs &&
 395         test_path_is_missing repo/.git/reftable/stable-ref.ref
 396 '
 397
 398 test_expect_success 'pack-refs: does not prune non-table files' '
 399         test_when_finished "rm -rf repo" &&
 400         git init repo &&
 401         touch repo/.git/reftable/garbage &&
 402         git -C repo pack-refs &&
 403         test_path_is_file repo/.git/reftable/garbage
 404 '
 405
 406 for umask in 002 022
 407 do
 408         test_expect_success POSIXPERM 'pack-refs: honors core.sharedRepository' '
 409                 test_when_finished "rm -rf repo" &&
 410                 (
 411                         umask $umask &&
 412                         git init --shared=true repo &&
 413                         test_commit -C repo A &&
 414                         test_line_count = 3 repo/.git/reftable/tables.list
 415                 ) &&
 416                 git -C repo pack-refs &&
 417                 test_expect_perms "-rw-rw-r--" repo/.git/reftable/tables.list &&
 418                 for table in repo/.git/reftable/*.ref
 419                 do
 420                         test_expect_perms "-rw-rw-r--" "$table" ||
 421                         return 1
 422                 done
 423         '
 424 done
 425
 426 test_expect_success 'packed-refs: writes are synced' '
 427         test_when_finished "rm -rf repo" &&
 428         git init repo &&
 429         test_commit -C repo initial &&
 430         test_line_count = 2 table-files &&
 431
 432         : >trace2.txt &&
 433         GIT_TRACE2_EVENT="$(pwd)/trace2.txt" \
 434         GIT_TEST_FSYNC=true \
 435                 git -C repo -c core.fsync=reference \
 436                 -c core.fsyncMethod=fsync pack-refs &&
 437         check_fsync_events trace2.txt <<-EOF
 438         "name":"hardware-flush","count":2
 439         EOF
 440 '
 441
 442 test_expect_success 'ref iterator: bogus names are flagged' '
 443         test_when_finished "rm -rf repo" &&
 444         git init repo &&
 445         (
 446                 cd repo &&
 447                 test_commit --no-tag file &&
 448                 test-tool ref-store main update-ref msg "refs/heads/bogus..name" $(git rev-parse HEAD) $ZERO_OID REF_SKIP_REFNAME_VERIFICATION &&
 449
 450                 cat >expect <<-EOF &&
 451                 $ZERO_OID refs/heads/bogus..name 0xc
 452                 $(git rev-parse HEAD) refs/heads/main 0x0
 453                 EOF
 454                 test-tool ref-store main for-each-ref "" >actual &&
 455                 test_cmp expect actual
 456         )
 457 '
 458
 459 test_expect_success 'ref iterator: missing object IDs are not flagged' '
 460         test_when_finished "rm -rf repo" &&
 461         git init repo &&
 462         (
 463                 cd repo &&
 464                 test-tool ref-store main update-ref msg "refs/heads/broken-hash" $INVALID_OID $ZERO_OID REF_SKIP_OID_VERIFICATION &&
 465
 466                 cat >expect <<-EOF &&
 467                 $INVALID_OID refs/heads/broken-hash 0x0
 468                 EOF
 469                 test-tool ref-store main for-each-ref "" >actual &&
 470                 test_cmp expect actual
 471         )
 472 '
 473
 474 test_expect_success 'basic: commit and list refs' '
 475         test_when_finished "rm -rf repo" &&
 476         git init repo &&
 477         test_commit -C repo file &&
 478         test_write_lines refs/heads/main refs/tags/file >expect &&
 479         git -C repo for-each-ref --format="%(refname)" >actual &&
 480         test_cmp actual expect
 481 '
 482
 483 test_expect_success 'basic: can write large commit message' '
 484         test_when_finished "rm -rf repo" &&
 485         git init repo &&
 486         perl -e "
 487                 print \"this is a long commit message\" x 50000
 488         " >commit-msg &&
 489         git -C repo commit --allow-empty --file=../commit-msg
 490 '
 491
 492 test_expect_success 'basic: show-ref fails with empty repository' '
 493         test_when_finished "rm -rf repo" &&
 494         git init repo &&
 495         test_must_fail git -C repo show-ref >actual &&
 496         test_must_be_empty actual
 497 '
 498
 499 test_expect_success 'basic: can check out unborn branch' '
 500         test_when_finished "rm -rf repo" &&
 501         git init repo &&
 502         git -C repo checkout -b main
 503 '
 504
 505 test_expect_success 'basic: peeled tags are stored' '
 506         test_when_finished "rm -rf repo" &&
 507         git init repo &&
 508         test_commit -C repo file &&
 509         git -C repo tag -m "annotated tag" test_tag HEAD &&
 510         for ref in refs/heads/main refs/tags/file refs/tags/test_tag refs/tags/test_tag^{}
 511         do
 512                 echo "$(git -C repo rev-parse "$ref") $ref" || return 1
 513         done >expect &&
 514         git -C repo show-ref -d >actual &&
 515         test_cmp expect actual
 516 '
 517
 518 test_expect_success 'basic: for-each-ref can print symrefs' '
 519         test_when_finished "rm -rf repo" &&
 520         git init repo &&
 521         (
 522                 cd repo &&
 523                 test_commit file &&
 524                 git branch &&
 525                 git symbolic-ref refs/heads/sym refs/heads/main &&
 526                 cat >expected <<-EOF &&
 527                 refs/heads/main
 528                 EOF
 529                 git for-each-ref --format="%(symref)" refs/heads/sym >actual &&
 530                 test_cmp expected actual
 531         )
 532 '
 533
 534 test_expect_success 'basic: notes' '
 535         test_when_finished "rm -rf repo" &&
 536         git init repo &&
 537         (
 538                 write_script fake_editor <<-\EOF &&
 539                 echo "$MSG" >"$1"
 540                 echo "$MSG" >&2
 541                 EOF
 542
 543                 test_commit 1st &&
 544                 test_commit 2nd &&
 545                 GIT_EDITOR=./fake_editor MSG=b4 git notes add &&
 546                 GIT_EDITOR=./fake_editor MSG=b3 git notes edit &&
 547                 echo b4 >expect &&
 548                 git notes --ref commits@{1} show >actual &&
 549                 test_cmp expect actual
 550         )
 551 '
 552
 553 test_expect_success 'basic: stash' '
 554         test_when_finished "rm -rf repo" &&
 555         git init repo &&
 556         (
 557                 cd repo &&
 558                 test_commit file &&
 559                 git stash list >expect &&
 560                 test_line_count = 0 expect &&
 561
 562                 echo hoi >>file.t &&
 563                 git stash push -m stashed &&
 564                 git stash list >expect &&
 565                 test_line_count = 1 expect &&
 566
 567                 git stash clear &&
 568                 git stash list >expect &&
 569                 test_line_count = 0 expect
 570         )
 571 '
 572
 573 test_expect_success 'basic: cherry-pick' '
 574         test_when_finished "rm -rf repo" &&
 575         git init repo &&
 576         (
 577                 cd repo &&
 578                 test_commit message1 file1 &&
 579                 test_commit message2 file2 &&
 580                 git branch source &&
 581                 git checkout HEAD^ &&
 582                 test_commit message3 file3 &&
 583                 git cherry-pick source &&
 584                 test_path_is_file file2
 585         )
 586 '
 587
 588 test_expect_success 'basic: rebase' '
 589         test_when_finished "rm -rf repo" &&
 590         git init repo &&
 591         (
 592                 cd repo &&
 593                 test_commit message1 file1 &&
 594                 test_commit message2 file2 &&
 595                 git branch source &&
 596                 git checkout HEAD^ &&
 597                 test_commit message3 file3 &&
 598                 git rebase source &&
 599                 test_path_is_file file2
 600         )
 601 '
 602
 603 test_expect_success 'reflog: can delete separate reflog entries' '
 604         test_when_finished "rm -rf repo" &&
 605         git init repo &&
 606         (
 607                 cd repo &&
 608
 609                 test_commit file &&
 610                 test_commit file2 &&
 611                 test_commit file3 &&
 612                 test_commit file4 &&
 613                 git reflog >actual &&
 614                 grep file3 actual &&
 615
 616                 git reflog delete HEAD@{1} &&
 617                 git reflog >actual &&
 618                 ! grep file3 actual
 619         )
 620 '
 621
 622 test_expect_success 'reflog: can switch to previous branch' '
 623         test_when_finished "rm -rf repo" &&
 624         git init repo &&
 625         (
 626                 cd repo &&
 627                 test_commit file1 &&
 628                 git checkout -b branch1 &&
 629                 test_commit file2 &&
 630                 git checkout -b branch2 &&
 631                 git switch - &&
 632                 git rev-parse --symbolic-full-name HEAD >actual &&
 633                 echo refs/heads/branch1 >expect &&
 634                 test_cmp actual expect
 635         )
 636 '
 637
 638 test_expect_success 'reflog: copying branch writes reflog entry' '
 639         test_when_finished "rm -rf repo" &&
 640         git init repo &&
 641         (
 642                 cd repo &&
 643                 test_commit file1 &&
 644                 test_commit file2 &&
 645                 oid=$(git rev-parse --short HEAD) &&
 646                 git branch src &&
 647                 cat >expect <<-EOF &&
 648                 ${oid} dst@{0}: Branch: copied refs/heads/src to refs/heads/dst
 649                 ${oid} dst@{1}: branch: Created from main
 650                 EOF
 651                 git branch -c src dst &&
 652                 git reflog dst >actual &&
 653                 test_cmp expect actual
 654         )
 655 '
 656
 657 test_expect_success 'reflog: renaming branch writes reflog entry' '
 658         test_when_finished "rm -rf repo" &&
 659         git init repo &&
 660         (
 661                 cd repo &&
 662                 git symbolic-ref HEAD refs/heads/before &&
 663                 test_commit file &&
 664                 git show-ref >expected.refs &&
 665                 sed s/before/after/g <expected.refs >expected &&
 666                 git branch -M after &&
 667                 git show-ref >actual &&
 668                 test_cmp expected actual &&
 669                 echo refs/heads/after >expected &&
 670                 git symbolic-ref HEAD >actual &&
 671                 test_cmp expected actual
 672         )
 673 '
 674
 675 test_expect_success 'reflog: can store empty logs' '
 676         test_when_finished "rm -rf repo" &&
 677         git init repo &&
 678         (
 679                 cd repo &&
 680
 681                 test_must_fail test-tool ref-store main reflog-exists refs/heads/branch &&
 682                 test-tool ref-store main create-reflog refs/heads/branch &&
 683                 test-tool ref-store main reflog-exists refs/heads/branch &&
 684                 test-tool ref-store main for-each-reflog-ent-reverse refs/heads/branch >actual &&
 685                 test_must_be_empty actual
 686         )
 687 '
 688
 689 test_expect_success 'reflog: expiry empties reflog' '
 690         test_when_finished "rm -rf repo" &&
 691         git init repo &&
 692         (
 693                 cd repo &&
 694
 695                 test_commit initial &&
 696                 git checkout -b branch &&
 697                 test_commit fileA &&
 698                 test_commit fileB &&
 699
 700                 cat >expect <<-EOF &&
 701                 commit: fileB
 702                 commit: fileA
 703                 branch: Created from HEAD
 704                 EOF
 705                 git reflog show --format="%gs" refs/heads/branch >actual &&
 706                 test_cmp expect actual &&
 707
 708                 git reflog expire branch --expire=all &&
 709                 git reflog show --format="%gs" refs/heads/branch >actual &&
 710                 test_must_be_empty actual &&
 711                 test-tool ref-store main reflog-exists refs/heads/branch
 712         )
 713 '
 714
 715 test_expect_success 'reflog: can be deleted' '
 716         test_when_finished "rm -rf repo" &&
 717         git init repo &&
 718         (
 719                 cd repo &&
 720                 test_commit initial &&
 721                 test-tool ref-store main reflog-exists refs/heads/main &&
 722                 test-tool ref-store main delete-reflog refs/heads/main &&
 723                 test_must_fail test-tool ref-store main reflog-exists refs/heads/main
 724         )
 725 '
 726
 727 test_expect_success 'reflog: garbage collection deletes reflog entries' '
 728         test_when_finished "rm -rf repo" &&
 729         git init repo &&
 730         (
 731                 cd repo &&
 732
 733                 for count in $(test_seq 1 10)
 734                 do
 735                         test_commit "number $count" file.t $count number-$count ||
 736                         return 1
 737                 done &&
 738                 git reflog refs/heads/main >actual &&
 739                 test_line_count = 10 actual &&
 740                 grep "commit (initial): number 1" actual &&
 741                 grep "commit: number 10" actual &&
 742
 743                 git gc &&
 744                 git reflog refs/heads/main >actual &&
 745                 test_line_count = 0 actual
 746         )
 747 '
 748
 749 test_expect_success 'reflog: updates via HEAD update HEAD reflog' '
 750         test_when_finished "rm -rf repo" &&
 751         git init repo &&
 752         (
 753                 cd repo &&
 754                 test_commit main-one &&
 755                 git checkout -b new-branch &&
 756                 test_commit new-one &&
 757                 test_commit new-two &&
 758
 759                 echo new-one >expect &&
 760                 git log -1 --format=%s HEAD@{1} >actual &&
 761                 test_cmp expect actual
 762         )
 763 '
 764
 765 test_expect_success 'worktree: adding worktree creates separate stack' '
 766         test_when_finished "rm -rf repo worktree" &&
 767         git init repo &&
 768         test_commit -C repo A &&
 769
 770         git -C repo worktree add ../worktree &&
 771         test_path_is_file repo/.git/worktrees/worktree/refs/heads &&
 772         echo "ref: refs/heads/.invalid" >expect &&
 773         test_cmp expect repo/.git/worktrees/worktree/HEAD &&
 774         test_path_is_dir repo/.git/worktrees/worktree/reftable &&
 775         test_path_is_file repo/.git/worktrees/worktree/reftable/tables.list
 776 '
 777
 778 test_expect_success 'worktree: pack-refs in main repo packs main refs' '
 779         test_when_finished "rm -rf repo worktree" &&
 780         git init repo &&
 781         test_commit -C repo A &&
 782         git -C repo worktree add ../worktree &&
 783
 784         test_line_count = 3 repo/.git/worktrees/worktree/reftable/tables.list &&
 785         test_line_count = 4 repo/.git/reftable/tables.list &&
 786         git -C repo pack-refs &&
 787         test_line_count = 3 repo/.git/worktrees/worktree/reftable/tables.list &&
 788         test_line_count = 1 repo/.git/reftable/tables.list
 789 '
 790
 791 test_expect_success 'worktree: pack-refs in worktree packs worktree refs' '
 792         test_when_finished "rm -rf repo worktree" &&
 793         git init repo &&
 794         test_commit -C repo A &&
 795         git -C repo worktree add ../worktree &&
 796
 797         test_line_count = 3 repo/.git/worktrees/worktree/reftable/tables.list &&
 798         test_line_count = 4 repo/.git/reftable/tables.list &&
 799         git -C worktree pack-refs &&
 800         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 801         test_line_count = 4 repo/.git/reftable/tables.list
 802 '
 803
 804 test_expect_success 'worktree: creating shared ref updates main stack' '
 805         test_when_finished "rm -rf repo worktree" &&
 806         git init repo &&
 807         test_commit -C repo A &&
 808
 809         git -C repo worktree add ../worktree &&
 810         git -C repo pack-refs &&
 811         git -C worktree pack-refs &&
 812         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 813         test_line_count = 1 repo/.git/reftable/tables.list &&
 814
 815         git -C worktree update-ref refs/heads/shared HEAD &&
 816         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 817         test_line_count = 2 repo/.git/reftable/tables.list
 818 '
 819
 820 test_expect_success 'worktree: creating per-worktree ref updates worktree stack' '
 821         test_when_finished "rm -rf repo worktree" &&
 822         git init repo &&
 823         test_commit -C repo A &&
 824
 825         git -C repo worktree add ../worktree &&
 826         git -C repo pack-refs &&
 827         git -C worktree pack-refs &&
 828         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 829         test_line_count = 1 repo/.git/reftable/tables.list &&
 830
 831         git -C worktree update-ref refs/bisect/per-worktree HEAD &&
 832         test_line_count = 2 repo/.git/worktrees/worktree/reftable/tables.list &&
 833         test_line_count = 1 repo/.git/reftable/tables.list
 834 '
 835
 836 test_expect_success 'worktree: creating per-worktree ref from main repo' '
 837         test_when_finished "rm -rf repo worktree" &&
 838         git init repo &&
 839         test_commit -C repo A &&
 840
 841         git -C repo worktree add ../worktree &&
 842         git -C repo pack-refs &&
 843         git -C worktree pack-refs &&
 844         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 845         test_line_count = 1 repo/.git/reftable/tables.list &&
 846
 847         git -C repo update-ref worktrees/worktree/refs/bisect/per-worktree HEAD &&
 848         test_line_count = 2 repo/.git/worktrees/worktree/reftable/tables.list &&
 849         test_line_count = 1 repo/.git/reftable/tables.list
 850 '
 851
 852 test_expect_success 'worktree: creating per-worktree ref from second worktree' '
 853         test_when_finished "rm -rf repo wt1 wt2" &&
 854         git init repo &&
 855         test_commit -C repo A &&
 856
 857         git -C repo worktree add ../wt1 &&
 858         git -C repo worktree add ../wt2 &&
 859         git -C repo pack-refs &&
 860         git -C wt1 pack-refs &&
 861         git -C wt2 pack-refs &&
 862         test_line_count = 1 repo/.git/worktrees/wt1/reftable/tables.list &&
 863         test_line_count = 1 repo/.git/worktrees/wt2/reftable/tables.list &&
 864         test_line_count = 1 repo/.git/reftable/tables.list &&
 865
 866         git -C wt1 update-ref worktrees/wt2/refs/bisect/per-worktree HEAD &&
 867         test_line_count = 1 repo/.git/worktrees/wt1/reftable/tables.list &&
 868         test_line_count = 2 repo/.git/worktrees/wt2/reftable/tables.list &&
 869         test_line_count = 1 repo/.git/reftable/tables.list
 870 '
 871
 872 test_expect_success 'worktree: can create shared and per-worktree ref in one transaction' '
 873         test_when_finished "rm -rf repo worktree" &&
 874         git init repo &&
 875         test_commit -C repo A &&
 876
 877         git -C repo worktree add ../worktree &&
 878         git -C repo pack-refs &&
 879         git -C worktree pack-refs &&
 880         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 881         test_line_count = 1 repo/.git/reftable/tables.list &&
 882
 883         cat >stdin <<-EOF &&
 884         create worktrees/worktree/refs/bisect/per-worktree HEAD
 885         create refs/branches/shared HEAD
 886         EOF
 887         git -C repo update-ref --stdin <stdin &&
 888         test_line_count = 2 repo/.git/worktrees/worktree/reftable/tables.list &&
 889         test_line_count = 2 repo/.git/reftable/tables.list
 890 '
 891
 892 test_expect_success 'worktree: can access common refs' '
 893         test_when_finished "rm -rf repo worktree" &&
 894         git init repo &&
 895         test_commit -C repo file1 &&
 896         git -C repo branch branch1 &&
 897         git -C repo worktree add ../worktree &&
 898
 899         echo refs/heads/worktree >expect &&
 900         git -C worktree symbolic-ref HEAD >actual &&
 901         test_cmp expect actual &&
 902         git -C worktree checkout branch1
 903 '
 904
 905 test_expect_success 'worktree: adds worktree with detached HEAD' '
 906         test_when_finished "rm -rf repo worktree" &&
 907
 908         git init repo &&
 909         test_commit -C repo A &&
 910         git -C repo rev-parse main >expect &&
 911
 912         git -C repo worktree add --detach ../worktree main &&
 913         git -C worktree rev-parse HEAD >actual &&
 914         test_cmp expect actual
 915 '
 916
 917 test_expect_success 'fetch: accessing FETCH_HEAD special ref works' '
 918         test_when_finished "rm -rf repo sub" &&
 919
 920         git init sub &&
 921         test_commit -C sub two &&
 922         git -C sub rev-parse HEAD >expect &&
 923
 924         git init repo &&
 925         test_commit -C repo one &&
 926         git -C repo fetch ../sub &&
 927         git -C repo rev-parse FETCH_HEAD >actual &&
 928         test_cmp expect actual
 929 '
 930
 931 test_done