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 "$table.lock" || exit 1
 356                         done ||
 357                         exit 1
 358                 done &&
 359                 test_line_count = 13 .git/reftable/tables.list
 360         )
 361 '
 362
 363 test_expect_success 'pack-refs: compacts tables' '
 364         test_when_finished "rm -rf repo" &&
 365         git init repo &&
 366
 367         test_commit -C repo A &&
 368         ls -1 repo/.git/reftable >table-files &&
 369         test_line_count = 4 table-files &&
 370         test_line_count = 3 repo/.git/reftable/tables.list &&
 371
 372         git -C repo pack-refs &&
 373         ls -1 repo/.git/reftable >table-files &&
 374         test_line_count = 2 table-files &&
 375         test_line_count = 1 repo/.git/reftable/tables.list
 376 '
 377
 378 test_expect_success 'pack-refs: compaction raises locking errors' '
 379         test_when_finished "rm -rf repo" &&
 380         git init repo &&
 381         test_commit -C repo A &&
 382         touch repo/.git/reftable/tables.list.lock &&
 383         cat >expect <<-EOF &&
 384         error: unable to compact stack: data is locked
 385         EOF
 386         test_must_fail git -C repo pack-refs 2>err &&
 387         test_cmp expect err
 388 '
 389
 390 for command in pack-refs gc "maintenance run --task=pack-refs"
 391 do
 392 test_expect_success "$command: auto compaction" '
 393         test_when_finished "rm -rf repo" &&
 394         git init repo &&
 395         (
 396                 cd repo &&
 397
 398                 test_commit A &&
 399
 400                 # We need a bit of setup to ensure that git-gc(1) actually
 401                 # triggers, and that it does not write anything to the refdb.
 402                 git config gc.auto 1 &&
 403                 git config gc.autoDetach 0 &&
 404                 git config gc.reflogExpire never &&
 405                 git config gc.reflogExpireUnreachable never &&
 406                 test_oid blob17_1 | git hash-object -w --stdin &&
 407
 408                 # The tables should have been auto-compacted, and thus auto
 409                 # compaction should not have to do anything.
 410                 ls -1 .git/reftable >tables-expect &&
 411                 test_line_count = 4 tables-expect &&
 412                 git $command --auto &&
 413                 ls -1 .git/reftable >tables-actual &&
 414                 test_cmp tables-expect tables-actual &&
 415
 416                 test_oid blob17_2 | git hash-object -w --stdin &&
 417
 418                 # Lock all tables write some refs. Auto-compaction will be
 419                 # unable to compact tables and thus fails gracefully, leaving
 420                 # the stack in a sub-optimal state.
 421                 ls .git/reftable/*.ref |
 422                 while read table
 423                 do
 424                         touch "$table.lock" || exit 1
 425                 done &&
 426                 git branch B &&
 427                 git branch C &&
 428                 rm .git/reftable/*.lock &&
 429                 test_line_count = 5 .git/reftable/tables.list &&
 430
 431                 git $command --auto &&
 432                 test_line_count = 1 .git/reftable/tables.list
 433         )
 434 '
 435 done
 436
 437 test_expect_success 'pack-refs: prunes stale tables' '
 438         test_when_finished "rm -rf repo" &&
 439         git init repo &&
 440         touch repo/.git/reftable/stale-table.ref &&
 441         git -C repo pack-refs &&
 442         test_path_is_missing repo/.git/reftable/stable-ref.ref
 443 '
 444
 445 test_expect_success 'pack-refs: does not prune non-table files' '
 446         test_when_finished "rm -rf repo" &&
 447         git init repo &&
 448         touch repo/.git/reftable/garbage &&
 449         git -C repo pack-refs &&
 450         test_path_is_file repo/.git/reftable/garbage
 451 '
 452
 453 for umask in 002 022
 454 do
 455         test_expect_success POSIXPERM 'pack-refs: honors core.sharedRepository' '
 456                 test_when_finished "rm -rf repo" &&
 457                 (
 458                         umask $umask &&
 459                         git init --shared=true repo &&
 460                         test_commit -C repo A &&
 461                         test_line_count = 3 repo/.git/reftable/tables.list
 462                 ) &&
 463                 git -C repo pack-refs &&
 464                 test_expect_perms "-rw-rw-r--" repo/.git/reftable/tables.list &&
 465                 for table in repo/.git/reftable/*.ref
 466                 do
 467                         test_expect_perms "-rw-rw-r--" "$table" ||
 468                         return 1
 469                 done
 470         '
 471 done
 472
 473 test_expect_success 'packed-refs: writes are synced' '
 474         test_when_finished "rm -rf repo" &&
 475         git init repo &&
 476         test_commit -C repo initial &&
 477         test_line_count = 2 table-files &&
 478
 479         : >trace2.txt &&
 480         GIT_TRACE2_EVENT="$(pwd)/trace2.txt" \
 481         GIT_TEST_FSYNC=true \
 482                 git -C repo -c core.fsync=reference \
 483                 -c core.fsyncMethod=fsync pack-refs &&
 484         check_fsync_events trace2.txt <<-EOF
 485         "name":"hardware-flush","count":2
 486         EOF
 487 '
 488
 489 test_expect_success 'ref iterator: bogus names are flagged' '
 490         test_when_finished "rm -rf repo" &&
 491         git init repo &&
 492         (
 493                 cd repo &&
 494                 test_commit --no-tag file &&
 495                 test-tool ref-store main update-ref msg "refs/heads/bogus..name" $(git rev-parse HEAD) $ZERO_OID REF_SKIP_REFNAME_VERIFICATION &&
 496
 497                 cat >expect <<-EOF &&
 498                 $ZERO_OID refs/heads/bogus..name 0xc
 499                 $(git rev-parse HEAD) refs/heads/main 0x0
 500                 EOF
 501                 test-tool ref-store main for-each-ref "" >actual &&
 502                 test_cmp expect actual
 503         )
 504 '
 505
 506 test_expect_success 'ref iterator: missing object IDs are not flagged' '
 507         test_when_finished "rm -rf repo" &&
 508         git init repo &&
 509         (
 510                 cd repo &&
 511                 test-tool ref-store main update-ref msg "refs/heads/broken-hash" $INVALID_OID $ZERO_OID REF_SKIP_OID_VERIFICATION &&
 512
 513                 cat >expect <<-EOF &&
 514                 $INVALID_OID refs/heads/broken-hash 0x0
 515                 EOF
 516                 test-tool ref-store main for-each-ref "" >actual &&
 517                 test_cmp expect actual
 518         )
 519 '
 520
 521 test_expect_success 'basic: commit and list refs' '
 522         test_when_finished "rm -rf repo" &&
 523         git init repo &&
 524         test_commit -C repo file &&
 525         test_write_lines refs/heads/main refs/tags/file >expect &&
 526         git -C repo for-each-ref --format="%(refname)" >actual &&
 527         test_cmp actual expect
 528 '
 529
 530 test_expect_success 'basic: can write large commit message' '
 531         test_when_finished "rm -rf repo" &&
 532         git init repo &&
 533         perl -e "
 534                 print \"this is a long commit message\" x 50000
 535         " >commit-msg &&
 536         git -C repo commit --allow-empty --file=../commit-msg
 537 '
 538
 539 test_expect_success 'basic: show-ref fails with empty repository' '
 540         test_when_finished "rm -rf repo" &&
 541         git init repo &&
 542         test_must_fail git -C repo show-ref >actual &&
 543         test_must_be_empty actual
 544 '
 545
 546 test_expect_success 'basic: can check out unborn branch' '
 547         test_when_finished "rm -rf repo" &&
 548         git init repo &&
 549         git -C repo checkout -b main
 550 '
 551
 552 test_expect_success 'basic: peeled tags are stored' '
 553         test_when_finished "rm -rf repo" &&
 554         git init repo &&
 555         test_commit -C repo file &&
 556         git -C repo tag -m "annotated tag" test_tag HEAD &&
 557         for ref in refs/heads/main refs/tags/file refs/tags/test_tag refs/tags/test_tag^{}
 558         do
 559                 echo "$(git -C repo rev-parse "$ref") $ref" || return 1
 560         done >expect &&
 561         git -C repo show-ref -d >actual &&
 562         test_cmp expect actual
 563 '
 564
 565 test_expect_success 'basic: for-each-ref can print symrefs' '
 566         test_when_finished "rm -rf repo" &&
 567         git init repo &&
 568         (
 569                 cd repo &&
 570                 test_commit file &&
 571                 git branch &&
 572                 git symbolic-ref refs/heads/sym refs/heads/main &&
 573                 cat >expected <<-EOF &&
 574                 refs/heads/main
 575                 EOF
 576                 git for-each-ref --format="%(symref)" refs/heads/sym >actual &&
 577                 test_cmp expected actual
 578         )
 579 '
 580
 581 test_expect_success 'basic: notes' '
 582         test_when_finished "rm -rf repo" &&
 583         git init repo &&
 584         (
 585                 write_script fake_editor <<-\EOF &&
 586                 echo "$MSG" >"$1"
 587                 echo "$MSG" >&2
 588                 EOF
 589
 590                 test_commit 1st &&
 591                 test_commit 2nd &&
 592                 GIT_EDITOR=./fake_editor MSG=b4 git notes add &&
 593                 GIT_EDITOR=./fake_editor MSG=b3 git notes edit &&
 594                 echo b4 >expect &&
 595                 git notes --ref commits@{1} show >actual &&
 596                 test_cmp expect actual
 597         )
 598 '
 599
 600 test_expect_success 'basic: stash' '
 601         test_when_finished "rm -rf repo" &&
 602         git init repo &&
 603         (
 604                 cd repo &&
 605                 test_commit file &&
 606                 git stash list >expect &&
 607                 test_line_count = 0 expect &&
 608
 609                 echo hoi >>file.t &&
 610                 git stash push -m stashed &&
 611                 git stash list >expect &&
 612                 test_line_count = 1 expect &&
 613
 614                 git stash clear &&
 615                 git stash list >expect &&
 616                 test_line_count = 0 expect
 617         )
 618 '
 619
 620 test_expect_success 'basic: cherry-pick' '
 621         test_when_finished "rm -rf repo" &&
 622         git init repo &&
 623         (
 624                 cd repo &&
 625                 test_commit message1 file1 &&
 626                 test_commit message2 file2 &&
 627                 git branch source &&
 628                 git checkout HEAD^ &&
 629                 test_commit message3 file3 &&
 630                 git cherry-pick source &&
 631                 test_path_is_file file2
 632         )
 633 '
 634
 635 test_expect_success 'basic: rebase' '
 636         test_when_finished "rm -rf repo" &&
 637         git init repo &&
 638         (
 639                 cd repo &&
 640                 test_commit message1 file1 &&
 641                 test_commit message2 file2 &&
 642                 git branch source &&
 643                 git checkout HEAD^ &&
 644                 test_commit message3 file3 &&
 645                 git rebase source &&
 646                 test_path_is_file file2
 647         )
 648 '
 649
 650 test_expect_success 'reflog: can delete separate reflog entries' '
 651         test_when_finished "rm -rf repo" &&
 652         git init repo &&
 653         (
 654                 cd repo &&
 655
 656                 test_commit file &&
 657                 test_commit file2 &&
 658                 test_commit file3 &&
 659                 test_commit file4 &&
 660                 git reflog >actual &&
 661                 grep file3 actual &&
 662
 663                 git reflog delete HEAD@{1} &&
 664                 git reflog >actual &&
 665                 ! grep file3 actual
 666         )
 667 '
 668
 669 test_expect_success 'reflog: can switch to previous branch' '
 670         test_when_finished "rm -rf repo" &&
 671         git init repo &&
 672         (
 673                 cd repo &&
 674                 test_commit file1 &&
 675                 git checkout -b branch1 &&
 676                 test_commit file2 &&
 677                 git checkout -b branch2 &&
 678                 git switch - &&
 679                 git rev-parse --symbolic-full-name HEAD >actual &&
 680                 echo refs/heads/branch1 >expect &&
 681                 test_cmp actual expect
 682         )
 683 '
 684
 685 test_expect_success 'reflog: copying branch writes reflog entry' '
 686         test_when_finished "rm -rf repo" &&
 687         git init repo &&
 688         (
 689                 cd repo &&
 690                 test_commit file1 &&
 691                 test_commit file2 &&
 692                 oid=$(git rev-parse --short HEAD) &&
 693                 git branch src &&
 694                 cat >expect <<-EOF &&
 695                 ${oid} dst@{0}: Branch: copied refs/heads/src to refs/heads/dst
 696                 ${oid} dst@{1}: branch: Created from main
 697                 EOF
 698                 git branch -c src dst &&
 699                 git reflog dst >actual &&
 700                 test_cmp expect actual
 701         )
 702 '
 703
 704 test_expect_success 'reflog: renaming branch writes reflog entry' '
 705         test_when_finished "rm -rf repo" &&
 706         git init repo &&
 707         (
 708                 cd repo &&
 709                 git symbolic-ref HEAD refs/heads/before &&
 710                 test_commit file &&
 711                 git show-ref >expected.refs &&
 712                 sed s/before/after/g <expected.refs >expected &&
 713                 git branch -M after &&
 714                 git show-ref >actual &&
 715                 test_cmp expected actual &&
 716                 echo refs/heads/after >expected &&
 717                 git symbolic-ref HEAD >actual &&
 718                 test_cmp expected actual
 719         )
 720 '
 721
 722 test_expect_success 'reflog: can store empty logs' '
 723         test_when_finished "rm -rf repo" &&
 724         git init repo &&
 725         (
 726                 cd repo &&
 727
 728                 test_must_fail test-tool ref-store main reflog-exists refs/heads/branch &&
 729                 test-tool ref-store main create-reflog refs/heads/branch &&
 730                 test-tool ref-store main reflog-exists refs/heads/branch &&
 731                 test-tool ref-store main for-each-reflog-ent-reverse refs/heads/branch >actual &&
 732                 test_must_be_empty actual
 733         )
 734 '
 735
 736 test_expect_success 'reflog: expiry empties reflog' '
 737         test_when_finished "rm -rf repo" &&
 738         git init repo &&
 739         (
 740                 cd repo &&
 741
 742                 test_commit initial &&
 743                 git checkout -b branch &&
 744                 test_commit fileA &&
 745                 test_commit fileB &&
 746
 747                 cat >expect <<-EOF &&
 748                 commit: fileB
 749                 commit: fileA
 750                 branch: Created from HEAD
 751                 EOF
 752                 git reflog show --format="%gs" refs/heads/branch >actual &&
 753                 test_cmp expect actual &&
 754
 755                 git reflog expire branch --expire=all &&
 756                 git reflog show --format="%gs" refs/heads/branch >actual &&
 757                 test_must_be_empty actual &&
 758                 test-tool ref-store main reflog-exists refs/heads/branch
 759         )
 760 '
 761
 762 test_expect_success 'reflog: can be deleted' '
 763         test_when_finished "rm -rf repo" &&
 764         git init repo &&
 765         (
 766                 cd repo &&
 767                 test_commit initial &&
 768                 test-tool ref-store main reflog-exists refs/heads/main &&
 769                 test-tool ref-store main delete-reflog refs/heads/main &&
 770                 test_must_fail test-tool ref-store main reflog-exists refs/heads/main
 771         )
 772 '
 773
 774 test_expect_success 'reflog: garbage collection deletes reflog entries' '
 775         test_when_finished "rm -rf repo" &&
 776         git init repo &&
 777         (
 778                 cd repo &&
 779
 780                 for count in $(test_seq 1 10)
 781                 do
 782                         test_commit "number $count" file.t $count number-$count ||
 783                         return 1
 784                 done &&
 785                 git reflog refs/heads/main >actual &&
 786                 test_line_count = 10 actual &&
 787                 grep "commit (initial): number 1" actual &&
 788                 grep "commit: number 10" actual &&
 789
 790                 git gc &&
 791                 git reflog refs/heads/main >actual &&
 792                 test_line_count = 0 actual
 793         )
 794 '
 795
 796 test_expect_success 'reflog: updates via HEAD update HEAD reflog' '
 797         test_when_finished "rm -rf repo" &&
 798         git init repo &&
 799         (
 800                 cd repo &&
 801                 test_commit main-one &&
 802                 git checkout -b new-branch &&
 803                 test_commit new-one &&
 804                 test_commit new-two &&
 805
 806                 echo new-one >expect &&
 807                 git log -1 --format=%s HEAD@{1} >actual &&
 808                 test_cmp expect actual
 809         )
 810 '
 811
 812 test_expect_success 'worktree: adding worktree creates separate stack' '
 813         test_when_finished "rm -rf repo worktree" &&
 814         git init repo &&
 815         test_commit -C repo A &&
 816
 817         git -C repo worktree add ../worktree &&
 818         test_path_is_file repo/.git/worktrees/worktree/refs/heads &&
 819         echo "ref: refs/heads/.invalid" >expect &&
 820         test_cmp expect repo/.git/worktrees/worktree/HEAD &&
 821         test_path_is_dir repo/.git/worktrees/worktree/reftable &&
 822         test_path_is_file repo/.git/worktrees/worktree/reftable/tables.list
 823 '
 824
 825 test_expect_success 'worktree: pack-refs in main repo packs main refs' '
 826         test_when_finished "rm -rf repo worktree" &&
 827         git init repo &&
 828         test_commit -C repo A &&
 829         git -C repo worktree add ../worktree &&
 830
 831         test_line_count = 3 repo/.git/worktrees/worktree/reftable/tables.list &&
 832         test_line_count = 4 repo/.git/reftable/tables.list &&
 833         git -C repo pack-refs &&
 834         test_line_count = 3 repo/.git/worktrees/worktree/reftable/tables.list &&
 835         test_line_count = 1 repo/.git/reftable/tables.list
 836 '
 837
 838 test_expect_success 'worktree: pack-refs in worktree packs worktree refs' '
 839         test_when_finished "rm -rf repo worktree" &&
 840         git init repo &&
 841         test_commit -C repo A &&
 842         git -C repo worktree add ../worktree &&
 843
 844         test_line_count = 3 repo/.git/worktrees/worktree/reftable/tables.list &&
 845         test_line_count = 4 repo/.git/reftable/tables.list &&
 846         git -C worktree pack-refs &&
 847         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 848         test_line_count = 4 repo/.git/reftable/tables.list
 849 '
 850
 851 test_expect_success 'worktree: creating shared ref updates main stack' '
 852         test_when_finished "rm -rf repo worktree" &&
 853         git init repo &&
 854         test_commit -C repo A &&
 855
 856         git -C repo worktree add ../worktree &&
 857         git -C repo pack-refs &&
 858         git -C worktree pack-refs &&
 859         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 860         test_line_count = 1 repo/.git/reftable/tables.list &&
 861
 862         git -C worktree update-ref refs/heads/shared HEAD &&
 863         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 864         test_line_count = 2 repo/.git/reftable/tables.list
 865 '
 866
 867 test_expect_success 'worktree: creating per-worktree ref updates worktree stack' '
 868         test_when_finished "rm -rf repo worktree" &&
 869         git init repo &&
 870         test_commit -C repo A &&
 871
 872         git -C repo worktree add ../worktree &&
 873         git -C repo pack-refs &&
 874         git -C worktree pack-refs &&
 875         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 876         test_line_count = 1 repo/.git/reftable/tables.list &&
 877
 878         git -C worktree update-ref refs/bisect/per-worktree HEAD &&
 879         test_line_count = 2 repo/.git/worktrees/worktree/reftable/tables.list &&
 880         test_line_count = 1 repo/.git/reftable/tables.list
 881 '
 882
 883 test_expect_success 'worktree: creating per-worktree ref from main repo' '
 884         test_when_finished "rm -rf repo worktree" &&
 885         git init repo &&
 886         test_commit -C repo A &&
 887
 888         git -C repo worktree add ../worktree &&
 889         git -C repo pack-refs &&
 890         git -C worktree pack-refs &&
 891         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 892         test_line_count = 1 repo/.git/reftable/tables.list &&
 893
 894         git -C repo update-ref worktrees/worktree/refs/bisect/per-worktree HEAD &&
 895         test_line_count = 2 repo/.git/worktrees/worktree/reftable/tables.list &&
 896         test_line_count = 1 repo/.git/reftable/tables.list
 897 '
 898
 899 test_expect_success 'worktree: creating per-worktree ref from second worktree' '
 900         test_when_finished "rm -rf repo wt1 wt2" &&
 901         git init repo &&
 902         test_commit -C repo A &&
 903
 904         git -C repo worktree add ../wt1 &&
 905         git -C repo worktree add ../wt2 &&
 906         git -C repo pack-refs &&
 907         git -C wt1 pack-refs &&
 908         git -C wt2 pack-refs &&
 909         test_line_count = 1 repo/.git/worktrees/wt1/reftable/tables.list &&
 910         test_line_count = 1 repo/.git/worktrees/wt2/reftable/tables.list &&
 911         test_line_count = 1 repo/.git/reftable/tables.list &&
 912
 913         git -C wt1 update-ref worktrees/wt2/refs/bisect/per-worktree HEAD &&
 914         test_line_count = 1 repo/.git/worktrees/wt1/reftable/tables.list &&
 915         test_line_count = 2 repo/.git/worktrees/wt2/reftable/tables.list &&
 916         test_line_count = 1 repo/.git/reftable/tables.list
 917 '
 918
 919 test_expect_success 'worktree: can create shared and per-worktree ref in one transaction' '
 920         test_when_finished "rm -rf repo worktree" &&
 921         git init repo &&
 922         test_commit -C repo A &&
 923
 924         git -C repo worktree add ../worktree &&
 925         git -C repo pack-refs &&
 926         git -C worktree pack-refs &&
 927         test_line_count = 1 repo/.git/worktrees/worktree/reftable/tables.list &&
 928         test_line_count = 1 repo/.git/reftable/tables.list &&
 929
 930         cat >stdin <<-EOF &&
 931         create worktrees/worktree/refs/bisect/per-worktree HEAD
 932         create refs/branches/shared HEAD
 933         EOF
 934         git -C repo update-ref --stdin <stdin &&
 935         test_line_count = 2 repo/.git/worktrees/worktree/reftable/tables.list &&
 936         test_line_count = 2 repo/.git/reftable/tables.list
 937 '
 938
 939 test_expect_success 'worktree: can access common refs' '
 940         test_when_finished "rm -rf repo worktree" &&
 941         git init repo &&
 942         test_commit -C repo file1 &&
 943         git -C repo branch branch1 &&
 944         git -C repo worktree add ../worktree &&
 945
 946         echo refs/heads/worktree >expect &&
 947         git -C worktree symbolic-ref HEAD >actual &&
 948         test_cmp expect actual &&
 949         git -C worktree checkout branch1
 950 '
 951
 952 test_expect_success 'worktree: adds worktree with detached HEAD' '
 953         test_when_finished "rm -rf repo worktree" &&
 954
 955         git init repo &&
 956         test_commit -C repo A &&
 957         git -C repo rev-parse main >expect &&
 958
 959         git -C repo worktree add --detach ../worktree main &&
 960         git -C worktree rev-parse HEAD >actual &&
 961         test_cmp expect actual
 962 '
 963
 964 test_expect_success 'fetch: accessing FETCH_HEAD special ref works' '
 965         test_when_finished "rm -rf repo sub" &&
 966
 967         git init sub &&
 968         test_commit -C sub two &&
 969         git -C sub rev-parse HEAD >expect &&
 970
 971         git init repo &&
 972         test_commit -C repo one &&
 973         git -C repo fetch ../sub &&
 974         git -C repo rev-parse FETCH_HEAD >actual &&
 975         test_cmp expect actual
 976 '
 977
 978 test_done