t/t7600-merge.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2007 Lars Hjemli
   4 #
   5
   6 test_description='git merge
   7
   8 Testing basic merge operations/option parsing.
   9
  10 ! [c0] commit 0
  11  ! [c1] commit 1
  12   ! [c2] commit 2
  13    ! [c3] commit 3
  14     ! [c4] c4
  15      ! [c5] c5
  16       ! [c6] c6
  17        * [master] Merge commit 'c1' into master
  18 --------
  19        - [master] Merge commit 'c1' into master
  20  +     * [c1] commit 1
  21       +  [c6] c6
  22      +   [c5] c5
  23     ++   [c4] c4
  24    ++++  [c3] commit 3
  25   +      [c2] commit 2
  26 +++++++* [c0] commit 0
  27 '
  28
  29 . ./test-lib.sh
  30 . "$TEST_DIRECTORY"/lib-gpg.sh
  31
  32 test_write_lines 1 2 3 4 5 6 7 8 9 >file
  33 cp file file.orig
  34 test_write_lines '1 X' 2 3 4 5 6 7 8 9 >file.1
  35 test_write_lines 1 2 '3 X' 4 5 6 7 8 9 >file.3
  36 test_write_lines 1 2 3 4 '5 X' 6 7 8 9 >file.5
  37 test_write_lines 1 2 3 4 5 6 7 8 '9 X' >file.9
  38 test_write_lines 1 2 3 4 5 6 7 8 '9 Y' >file.9y
  39 test_write_lines '1 X' 2 3 4 5 6 7 8 9 >result.1
  40 test_write_lines '1 X' 2 3 4 '5 X' 6 7 8 9 >result.1-5
  41 test_write_lines '1 X' 2 3 4 5 6 7 8 '9 X' >result.1-9
  42 test_write_lines '1 X' 2 3 4 '5 X' 6 7 8 '9 X' >result.1-5-9
  43 test_write_lines '1 X' 2 '3 X' 4 '5 X' 6 7 8 '9 X' >result.1-3-5-9
  44 test_write_lines 1 2 3 4 5 6 7 8 '9 Z' >result.9z
  45
  46 create_merge_msgs () {
  47         echo "Merge tag 'c2' into master" >msg.1-5 &&
  48         echo "Merge tags 'c2' and 'c3' into master" >msg.1-5-9 &&
  49         {
  50                 echo "Squashed commit of the following:" &&
  51                 echo &&
  52                 git log --no-merges ^HEAD c1
  53         } >squash.1 &&
  54         {
  55                 echo "Squashed commit of the following:" &&
  56                 echo &&
  57                 git log --no-merges ^HEAD c2
  58         } >squash.1-5 &&
  59         {
  60                 echo "Squashed commit of the following:" &&
  61                 echo &&
  62                 git log --no-merges ^HEAD c2 c3
  63         } >squash.1-5-9 &&
  64         {
  65                 echo "* tag 'c3':" &&
  66                 echo "  commit 3"
  67         } >msg.log
  68 }
  69
  70 verify_merge () {
  71         test_cmp "$2" "$1" &&
  72         git update-index --refresh &&
  73         git diff --exit-code &&
  74         if test -n "$3"
  75         then
  76                 git show -s --pretty=tformat:%s HEAD >msg.act &&
  77                 test_cmp "$3" msg.act
  78         fi
  79 }
  80
  81 verify_head () {
  82         echo "$1" >head.expected &&
  83         git rev-parse HEAD >head.actual &&
  84         test_cmp head.expected head.actual
  85 }
  86
  87 verify_parents () {
  88         test_write_lines "$@" >parents.expected &&
  89         >parents.actual &&
  90         i=1 &&
  91         while test $i -le $#
  92         do
  93                 git rev-parse HEAD^$i >>parents.actual &&
  94                 i=$(expr $i + 1) ||
  95                 return 1
  96         done &&
  97         test_must_fail git rev-parse --verify "HEAD^$i" &&
  98         test_cmp parents.expected parents.actual
  99 }
 100
 101 verify_mergeheads () {
 102         test_write_lines "$@" >mergehead.expected &&
 103         while read sha1 rest
 104         do
 105                 git rev-parse $sha1
 106         done <.git/MERGE_HEAD >mergehead.actual &&
 107         test_cmp mergehead.expected mergehead.actual
 108 }
 109
 110 verify_no_mergehead () {
 111         ! test -e .git/MERGE_HEAD
 112 }
 113
 114 test_expect_success 'setup' '
 115         git add file &&
 116         test_tick &&
 117         git commit -m "commit 0" &&
 118         git tag c0 &&
 119         c0=$(git rev-parse HEAD) &&
 120         cp file.1 file &&
 121         git add file &&
 122         test_tick &&
 123         git commit -m "commit 1" &&
 124         git tag c1 &&
 125         c1=$(git rev-parse HEAD) &&
 126         git reset --hard "$c0" &&
 127         cp file.5 file &&
 128         git add file &&
 129         test_tick &&
 130         git commit -m "commit 2" &&
 131         git tag c2 &&
 132         c2=$(git rev-parse HEAD) &&
 133         git reset --hard "$c0" &&
 134         cp file.9y file &&
 135         git add file &&
 136         test_tick &&
 137         git commit -m "commit 7" &&
 138         git tag c7 &&
 139         git reset --hard "$c0" &&
 140         cp file.9 file &&
 141         git add file &&
 142         test_tick &&
 143         git commit -m "commit 3" &&
 144         git tag c3 &&
 145         c3=$(git rev-parse HEAD) &&
 146         git reset --hard "$c0" &&
 147         create_merge_msgs
 148 '
 149
 150 test_debug 'git log --graph --decorate --oneline --all'
 151
 152 test_expect_success 'test option parsing' '
 153         test_must_fail git merge -$ c1 &&
 154         test_must_fail git merge --no-such c1 &&
 155         test_must_fail git merge -s foobar c1 &&
 156         test_must_fail git merge -s=foobar c1 &&
 157         test_must_fail git merge -m &&
 158         test_must_fail git merge --abort foobar &&
 159         test_must_fail git merge --abort --quiet &&
 160         test_must_fail git merge --continue foobar &&
 161         test_must_fail git merge --continue --quiet &&
 162         test_must_fail git merge
 163 '
 164
 165 test_expect_success 'merge -h with invalid index' '
 166         mkdir broken &&
 167         (
 168                 cd broken &&
 169                 git init &&
 170                 >.git/index &&
 171                 test_expect_code 129 git merge -h 2>usage
 172         ) &&
 173         test_i18ngrep "[Uu]sage: git merge" broken/usage
 174 '
 175
 176 test_expect_success 'reject non-strategy with a git-merge-foo name' '
 177         test_must_fail git merge -s index c1
 178 '
 179
 180 test_expect_success 'merge c0 with c1' '
 181         echo "OBJID HEAD@{0}: merge c1: Fast-forward" >reflog.expected &&
 182
 183         git reset --hard c0 &&
 184         git merge c1 &&
 185         verify_merge file result.1 &&
 186         verify_head "$c1" &&
 187
 188         git reflog -1 >reflog.actual &&
 189         sed "s/$_x05[0-9a-f]*/OBJID/g" reflog.actual >reflog.fuzzy &&
 190         test_cmp reflog.expected reflog.fuzzy
 191 '
 192
 193 test_debug 'git log --graph --decorate --oneline --all'
 194
 195 test_expect_success 'merge c0 with c1 with --ff-only' '
 196         git reset --hard c0 &&
 197         git merge --ff-only c1 &&
 198         git merge --ff-only HEAD c0 c1 &&
 199         verify_merge file result.1 &&
 200         verify_head "$c1"
 201 '
 202
 203 test_debug 'git log --graph --decorate --oneline --all'
 204
 205 test_expect_success 'merge from unborn branch' '
 206         git checkout -f master &&
 207         test_might_fail git branch -D kid &&
 208
 209         echo "OBJID HEAD@{0}: initial pull" >reflog.expected &&
 210
 211         git checkout --orphan kid &&
 212         test_when_finished "git checkout -f master" &&
 213         git rm -fr . &&
 214         test_tick &&
 215         git merge --ff-only c1 &&
 216         verify_merge file result.1 &&
 217         verify_head "$c1" &&
 218
 219         git reflog -1 >reflog.actual &&
 220         sed "s/$_x05[0-9a-f][0-9a-f]/OBJID/g" reflog.actual >reflog.fuzzy &&
 221         test_cmp reflog.expected reflog.fuzzy
 222 '
 223
 224 test_debug 'git log --graph --decorate --oneline --all'
 225
 226 test_expect_success 'merge c1 with c2' '
 227         git reset --hard c1 &&
 228         test_tick &&
 229         git merge c2 &&
 230         verify_merge file result.1-5 msg.1-5 &&
 231         verify_parents $c1 $c2
 232 '
 233
 234 test_expect_success 'merge --squash c3 with c7' '
 235         git reset --hard c3 &&
 236         test_must_fail git merge --squash c7 &&
 237         cat result.9z >file &&
 238         git commit --no-edit -a &&
 239
 240         cat >expect <<-EOF &&
 241         Squashed commit of the following:
 242
 243         $(git show -s c7)
 244
 245         # Conflicts:
 246         #       file
 247         EOF
 248         git cat-file commit HEAD >raw &&
 249         sed -e '1,/^$/d' raw >actual &&
 250         test_cmp expect actual
 251 '
 252
 253 test_expect_success 'merge c3 with c7 with commit.cleanup = scissors' '
 254         git config commit.cleanup scissors &&
 255         git reset --hard c3 &&
 256         test_must_fail git merge c7 &&
 257         cat result.9z >file &&
 258         git commit --no-edit -a &&
 259
 260         cat >expect <<-\EOF &&
 261         Merge tag '"'"'c7'"'"' into master
 262
 263         # ------------------------ >8 ------------------------
 264         # Do not modify or remove the line above.
 265         # Everything below it will be ignored.
 266         #
 267         # Conflicts:
 268         #       file
 269         EOF
 270         git cat-file commit HEAD >raw &&
 271         sed -e '1,/^$/d' raw >actual &&
 272         test_i18ncmp expect actual
 273 '
 274
 275 test_expect_success 'merge c3 with c7 with --squash commit.cleanup = scissors' '
 276         git config commit.cleanup scissors &&
 277         git reset --hard c3 &&
 278         test_must_fail git merge --squash c7 &&
 279         cat result.9z >file &&
 280         git commit --no-edit -a &&
 281
 282         cat >expect <<-EOF &&
 283         Squashed commit of the following:
 284
 285         $(git show -s c7)
 286
 287         # ------------------------ >8 ------------------------
 288         # Do not modify or remove the line above.
 289         # Everything below it will be ignored.
 290         #
 291         # Conflicts:
 292         #       file
 293         EOF
 294         git cat-file commit HEAD >raw &&
 295         sed -e '1,/^$/d' raw >actual &&
 296         test_i18ncmp expect actual
 297 '
 298
 299 test_debug 'git log --graph --decorate --oneline --all'
 300
 301 test_expect_success 'merge c1 with c2 and c3' '
 302         git reset --hard c1 &&
 303         test_tick &&
 304         git merge c2 c3 &&
 305         verify_merge file result.1-5-9 msg.1-5-9 &&
 306         verify_parents $c1 $c2 $c3
 307 '
 308
 309 test_debug 'git log --graph --decorate --oneline --all'
 310
 311 test_expect_success 'merges with --ff-only' '
 312         git reset --hard c1 &&
 313         test_tick &&
 314         test_must_fail git merge --ff-only c2 &&
 315         test_must_fail git merge --ff-only c3 &&
 316         test_must_fail git merge --ff-only c2 c3 &&
 317         git reset --hard c0 &&
 318         git merge c3 &&
 319         verify_head $c3
 320 '
 321
 322 test_expect_success 'merges with merge.ff=only' '
 323         git reset --hard c1 &&
 324         test_tick &&
 325         test_config merge.ff "only" &&
 326         test_must_fail git merge c2 &&
 327         test_must_fail git merge c3 &&
 328         test_must_fail git merge c2 c3 &&
 329         git reset --hard c0 &&
 330         git merge c3 &&
 331         verify_head $c3
 332 '
 333
 334 test_expect_success 'merge c0 with c1 (no-commit)' '
 335         git reset --hard c0 &&
 336         git merge --no-commit c1 &&
 337         verify_merge file result.1 &&
 338         verify_head $c1
 339 '
 340
 341 test_debug 'git log --graph --decorate --oneline --all'
 342
 343 test_expect_success 'merge c1 with c2 (no-commit)' '
 344         git reset --hard c1 &&
 345         git merge --no-commit c2 &&
 346         verify_merge file result.1-5 &&
 347         verify_head $c1 &&
 348         verify_mergeheads $c2
 349 '
 350
 351 test_debug 'git log --graph --decorate --oneline --all'
 352
 353 test_expect_success 'merge c1 with c2 and c3 (no-commit)' '
 354         git reset --hard c1 &&
 355         git merge --no-commit c2 c3 &&
 356         verify_merge file result.1-5-9 &&
 357         verify_head $c1 &&
 358         verify_mergeheads $c2 $c3
 359 '
 360
 361 test_debug 'git log --graph --decorate --oneline --all'
 362
 363 test_expect_success 'merge c0 with c1 (squash)' '
 364         git reset --hard c0 &&
 365         git merge --squash c1 &&
 366         verify_merge file result.1 &&
 367         verify_head $c0 &&
 368         verify_no_mergehead &&
 369         test_cmp squash.1 .git/SQUASH_MSG
 370 '
 371
 372 test_debug 'git log --graph --decorate --oneline --all'
 373
 374 test_expect_success 'merge c0 with c1 (squash, ff-only)' '
 375         git reset --hard c0 &&
 376         git merge --squash --ff-only c1 &&
 377         verify_merge file result.1 &&
 378         verify_head $c0 &&
 379         verify_no_mergehead &&
 380         test_cmp squash.1 .git/SQUASH_MSG
 381 '
 382
 383 test_debug 'git log --graph --decorate --oneline --all'
 384
 385 test_expect_success 'merge c1 with c2 (squash)' '
 386         git reset --hard c1 &&
 387         git merge --squash c2 &&
 388         verify_merge file result.1-5 &&
 389         verify_head $c1 &&
 390         verify_no_mergehead &&
 391         test_cmp squash.1-5 .git/SQUASH_MSG
 392 '
 393
 394 test_debug 'git log --graph --decorate --oneline --all'
 395
 396 test_expect_success 'unsuccessful merge of c1 with c2 (squash, ff-only)' '
 397         git reset --hard c1 &&
 398         test_must_fail git merge --squash --ff-only c2
 399 '
 400
 401 test_debug 'git log --graph --decorate --oneline --all'
 402
 403 test_expect_success 'merge c1 with c2 and c3 (squash)' '
 404         git reset --hard c1 &&
 405         git merge --squash c2 c3 &&
 406         verify_merge file result.1-5-9 &&
 407         verify_head $c1 &&
 408         verify_no_mergehead &&
 409         test_cmp squash.1-5-9 .git/SQUASH_MSG
 410 '
 411
 412 test_debug 'git log --graph --decorate --oneline --all'
 413
 414 test_expect_success 'merge c1 with c2 (no-commit in config)' '
 415         git reset --hard c1 &&
 416         test_config branch.master.mergeoptions "--no-commit" &&
 417         git merge c2 &&
 418         verify_merge file result.1-5 &&
 419         verify_head $c1 &&
 420         verify_mergeheads $c2
 421 '
 422
 423 test_debug 'git log --graph --decorate --oneline --all'
 424
 425 test_expect_success 'merge c1 with c2 (log in config)' '
 426         git reset --hard c1 &&
 427         git merge --log c2 &&
 428         git show -s --pretty=tformat:%s%n%b >expect &&
 429
 430         test_config branch.master.mergeoptions "--log" &&
 431         git reset --hard c1 &&
 432         git merge c2 &&
 433         git show -s --pretty=tformat:%s%n%b >actual &&
 434
 435         test_cmp expect actual
 436 '
 437
 438 test_expect_success 'merge c1 with c2 (log in config gets overridden)' '
 439         git reset --hard c1 &&
 440         git merge c2 &&
 441         git show -s --pretty=tformat:%s%n%b >expect &&
 442
 443         test_config branch.master.mergeoptions "--no-log" &&
 444         test_config merge.log "true" &&
 445         git reset --hard c1 &&
 446         git merge c2 &&
 447         git show -s --pretty=tformat:%s%n%b >actual &&
 448
 449         test_cmp expect actual
 450 '
 451
 452 test_expect_success 'merge c1 with c2 (squash in config)' '
 453         git reset --hard c1 &&
 454         test_config branch.master.mergeoptions "--squash" &&
 455         git merge c2 &&
 456         verify_merge file result.1-5 &&
 457         verify_head $c1 &&
 458         verify_no_mergehead &&
 459         test_cmp squash.1-5 .git/SQUASH_MSG
 460 '
 461
 462 test_debug 'git log --graph --decorate --oneline --all'
 463
 464 test_expect_success 'override config option -n with --summary' '
 465         git reset --hard c1 &&
 466         test_config branch.master.mergeoptions "-n" &&
 467         test_tick &&
 468         git merge --summary c2 >diffstat.txt &&
 469         verify_merge file result.1-5 msg.1-5 &&
 470         verify_parents $c1 $c2 &&
 471         if ! grep "^ file |  *2 +-$" diffstat.txt
 472         then
 473                 echo "[OOPS] diffstat was not generated with --summary"
 474                 false
 475         fi
 476 '
 477
 478 test_expect_success 'override config option -n with --stat' '
 479         git reset --hard c1 &&
 480         test_config branch.master.mergeoptions "-n" &&
 481         test_tick &&
 482         git merge --stat c2 >diffstat.txt &&
 483         verify_merge file result.1-5 msg.1-5 &&
 484         verify_parents $c1 $c2 &&
 485         if ! grep "^ file |  *2 +-$" diffstat.txt
 486         then
 487                 echo "[OOPS] diffstat was not generated with --stat"
 488                 false
 489         fi
 490 '
 491
 492 test_debug 'git log --graph --decorate --oneline --all'
 493
 494 test_expect_success 'override config option --stat' '
 495         git reset --hard c1 &&
 496         test_config branch.master.mergeoptions "--stat" &&
 497         test_tick &&
 498         git merge -n c2 >diffstat.txt &&
 499         verify_merge file result.1-5 msg.1-5 &&
 500         verify_parents $c1 $c2 &&
 501         if grep "^ file |  *2 +-$" diffstat.txt
 502         then
 503                 echo "[OOPS] diffstat was generated"
 504                 false
 505         fi
 506 '
 507
 508 test_debug 'git log --graph --decorate --oneline --all'
 509
 510 test_expect_success 'merge c1 with c2 (override --no-commit)' '
 511         git reset --hard c1 &&
 512         test_config branch.master.mergeoptions "--no-commit" &&
 513         test_tick &&
 514         git merge --commit c2 &&
 515         verify_merge file result.1-5 msg.1-5 &&
 516         verify_parents $c1 $c2
 517 '
 518
 519 test_debug 'git log --graph --decorate --oneline --all'
 520
 521 test_expect_success 'merge c1 with c2 (override --squash)' '
 522         git reset --hard c1 &&
 523         test_config branch.master.mergeoptions "--squash" &&
 524         test_tick &&
 525         git merge --no-squash c2 &&
 526         verify_merge file result.1-5 msg.1-5 &&
 527         verify_parents $c1 $c2
 528 '
 529
 530 test_debug 'git log --graph --decorate --oneline --all'
 531
 532 test_expect_success 'merge c0 with c1 (no-ff)' '
 533         git reset --hard c0 &&
 534         test_tick &&
 535         git merge --no-ff c1 &&
 536         verify_merge file result.1 &&
 537         verify_parents $c0 $c1
 538 '
 539
 540 test_debug 'git log --graph --decorate --oneline --all'
 541
 542 test_expect_success 'merge c0 with c1 (merge.ff=false)' '
 543         git reset --hard c0 &&
 544         test_config merge.ff "false" &&
 545         test_tick &&
 546         git merge c1 &&
 547         verify_merge file result.1 &&
 548         verify_parents $c0 $c1
 549 '
 550 test_debug 'git log --graph --decorate --oneline --all'
 551
 552 test_expect_success 'combine branch.master.mergeoptions with merge.ff' '
 553         git reset --hard c0 &&
 554         test_config branch.master.mergeoptions "--ff" &&
 555         test_config merge.ff "false" &&
 556         test_tick &&
 557         git merge c1 &&
 558         verify_merge file result.1 &&
 559         verify_parents "$c0"
 560 '
 561
 562 test_expect_success 'tolerate unknown values for merge.ff' '
 563         git reset --hard c0 &&
 564         test_config merge.ff "something-new" &&
 565         test_tick &&
 566         git merge c1 2>message &&
 567         verify_head "$c1" &&
 568         test_must_be_empty message
 569 '
 570
 571 test_expect_success 'combining --squash and --no-ff is refused' '
 572         git reset --hard c0 &&
 573         test_must_fail git merge --squash --no-ff c1 &&
 574         test_must_fail git merge --no-ff --squash c1
 575 '
 576
 577 test_expect_success 'combining --squash and --commit is refused' '
 578         git reset --hard c0 &&
 579         test_must_fail git merge --squash --commit c1 &&
 580         test_must_fail git merge --commit --squash c1
 581 '
 582
 583 test_expect_success 'option --ff-only overwrites --no-ff' '
 584         git merge --no-ff --ff-only c1 &&
 585         test_must_fail git merge --no-ff --ff-only c2
 586 '
 587
 588 test_expect_success 'option --no-ff overrides merge.ff=only config' '
 589         git reset --hard c0 &&
 590         test_config merge.ff only &&
 591         git merge --no-ff c1
 592 '
 593
 594 test_expect_success 'merge c0 with c1 (ff overrides no-ff)' '
 595         git reset --hard c0 &&
 596         test_config branch.master.mergeoptions "--no-ff" &&
 597         git merge --ff c1 &&
 598         verify_merge file result.1 &&
 599         verify_head $c1
 600 '
 601
 602 test_expect_success 'merge log message' '
 603         git reset --hard c0 &&
 604         git merge --no-log c2 &&
 605         git show -s --pretty=format:%b HEAD >msg.act &&
 606         test_must_be_empty msg.act &&
 607
 608         git reset --hard c0 &&
 609         test_config branch.master.mergeoptions "--no-ff" &&
 610         git merge --no-log c2 &&
 611         git show -s --pretty=format:%b HEAD >msg.act &&
 612         test_must_be_empty msg.act &&
 613
 614         git merge --log c3 &&
 615         git show -s --pretty=format:%b HEAD >msg.act &&
 616         test_cmp msg.log msg.act &&
 617
 618         git reset --hard HEAD^ &&
 619         test_config merge.log "yes" &&
 620         git merge c3 &&
 621         git show -s --pretty=format:%b HEAD >msg.act &&
 622         test_cmp msg.log msg.act
 623 '
 624
 625 test_debug 'git log --graph --decorate --oneline --all'
 626
 627 test_expect_success 'merge c1 with c0, c2, c0, and c1' '
 628        git reset --hard c1 &&
 629        test_tick &&
 630        git merge c0 c2 c0 c1 &&
 631        verify_merge file result.1-5 &&
 632        verify_parents $c1 $c2
 633 '
 634
 635 test_debug 'git log --graph --decorate --oneline --all'
 636
 637 test_expect_success 'merge c1 with c0, c2, c0, and c1' '
 638        git reset --hard c1 &&
 639        test_tick &&
 640        git merge c0 c2 c0 c1 &&
 641        verify_merge file result.1-5 &&
 642        verify_parents $c1 $c2
 643 '
 644
 645 test_debug 'git log --graph --decorate --oneline --all'
 646
 647 test_expect_success 'merge c1 with c1 and c2' '
 648        git reset --hard c1 &&
 649        test_tick &&
 650        git merge c1 c2 &&
 651        verify_merge file result.1-5 &&
 652        verify_parents $c1 $c2
 653 '
 654
 655 test_debug 'git log --graph --decorate --oneline --all'
 656
 657 test_expect_success 'merge fast-forward in a dirty tree' '
 658        git reset --hard c0 &&
 659        mv file file1 &&
 660        cat file1 >file &&
 661        rm -f file1 &&
 662        git merge c2
 663 '
 664
 665 test_debug 'git log --graph --decorate --oneline --all'
 666
 667 test_expect_success 'in-index merge' '
 668         git reset --hard c0 &&
 669         git merge --no-ff -s resolve c1 >out &&
 670         test_i18ngrep "Wonderful." out &&
 671         verify_parents $c0 $c1
 672 '
 673
 674 test_debug 'git log --graph --decorate --oneline --all'
 675
 676 test_expect_success 'refresh the index before merging' '
 677         git reset --hard c1 &&
 678         cp file file.n && mv -f file.n file &&
 679         git merge c3
 680 '
 681
 682 test_expect_success 'merge with --autostash' '
 683         git reset --hard c1 &&
 684         git merge-file file file.orig file.9 &&
 685         git merge --autostash c2 2>err &&
 686         test_i18ngrep "Applied autostash." err &&
 687         git show HEAD:file >merge-result &&
 688         test_cmp result.1-5 merge-result &&
 689         test_cmp result.1-5-9 file
 690 '
 691
 692 test_expect_success 'merge with merge.autoStash' '
 693         test_config merge.autoStash true &&
 694         git reset --hard c1 &&
 695         git merge-file file file.orig file.9 &&
 696         git merge c2 2>err &&
 697         test_i18ngrep "Applied autostash." err &&
 698         git show HEAD:file >merge-result &&
 699         test_cmp result.1-5 merge-result &&
 700         test_cmp result.1-5-9 file
 701 '
 702
 703 test_expect_success 'fast-forward merge with --autostash' '
 704         git reset --hard c0 &&
 705         git merge-file file file.orig file.5 &&
 706         git merge --autostash c1 2>err &&
 707         test_i18ngrep "Applied autostash." err &&
 708         test_cmp result.1-5 file
 709 '
 710
 711 test_expect_success 'octopus merge with --autostash' '
 712         git reset --hard c1 &&
 713         git merge-file file file.orig file.3 &&
 714         git merge --autostash c2 c3 2>err &&
 715         test_i18ngrep "Applied autostash." err &&
 716         git show HEAD:file >merge-result &&
 717         test_cmp result.1-5-9 merge-result &&
 718         test_cmp result.1-3-5-9 file
 719 '
 720
 721 test_expect_success 'conflicted merge with --autostash, --abort restores stash' '
 722         git reset --hard c3 &&
 723         cp file.1 file &&
 724         test_must_fail git merge --autostash c7 &&
 725         git merge --abort 2>err &&
 726         test_i18ngrep "Applied autostash." err &&
 727         test_cmp file.1 file
 728 '
 729
 730 test_expect_success 'completed merge (git commit) with --no-commit and --autostash' '
 731         git reset --hard c1 &&
 732         git merge-file file file.orig file.9 &&
 733         git diff >expect &&
 734         git merge --no-commit --autostash c2 &&
 735         git stash show -p MERGE_AUTOSTASH >actual &&
 736         test_cmp expect actual &&
 737         git commit 2>err &&
 738         test_i18ngrep "Applied autostash." err &&
 739         git show HEAD:file >merge-result &&
 740         test_cmp result.1-5 merge-result &&
 741         test_cmp result.1-5-9 file
 742 '
 743
 744 test_expect_success 'completed merge (git merge --continue) with --no-commit and --autostash' '
 745         git reset --hard c1 &&
 746         git merge-file file file.orig file.9 &&
 747         git diff >expect &&
 748         git merge --no-commit --autostash c2 &&
 749         git stash show -p MERGE_AUTOSTASH >actual &&
 750         test_cmp expect actual &&
 751         git merge --continue 2>err &&
 752         test_i18ngrep "Applied autostash." err &&
 753         git show HEAD:file >merge-result &&
 754         test_cmp result.1-5 merge-result &&
 755         test_cmp result.1-5-9 file
 756 '
 757
 758 test_expect_success 'aborted merge (merge --abort) with --no-commit and --autostash' '
 759         git reset --hard c1 &&
 760         git merge-file file file.orig file.9 &&
 761         git diff >expect &&
 762         git merge --no-commit --autostash c2 &&
 763         git stash show -p MERGE_AUTOSTASH >actual &&
 764         test_cmp expect actual &&
 765         git merge --abort 2>err &&
 766         test_i18ngrep "Applied autostash." err &&
 767         git diff >actual &&
 768         test_cmp expect actual
 769 '
 770
 771 test_expect_success 'aborted merge (reset --hard) with --no-commit and --autostash' '
 772         git reset --hard c1 &&
 773         git merge-file file file.orig file.9 &&
 774         git diff >expect &&
 775         git merge --no-commit --autostash c2 &&
 776         git stash show -p MERGE_AUTOSTASH >actual &&
 777         test_cmp expect actual &&
 778         git reset --hard 2>err &&
 779         test_i18ngrep "Autostash exists; creating a new stash entry." err &&
 780         git diff --exit-code
 781 '
 782
 783 test_expect_success 'quit merge with --no-commit and --autostash' '
 784         git reset --hard c1 &&
 785         git merge-file file file.orig file.9 &&
 786         git diff >expect &&
 787         git merge --no-commit --autostash c2 &&
 788         git stash show -p MERGE_AUTOSTASH >actual &&
 789         test_cmp expect actual &&
 790         git diff HEAD >expect &&
 791         git merge --quit 2>err &&
 792         test_i18ngrep "Autostash exists; creating a new stash entry." err &&
 793         git diff HEAD >actual &&
 794         test_cmp expect actual
 795 '
 796
 797 test_expect_success 'merge with conflicted --autostash changes' '
 798         git reset --hard c1 &&
 799         git merge-file file file.orig file.9y &&
 800         git diff >expect &&
 801         test_when_finished "test_might_fail git stash drop" &&
 802         git merge --autostash c3 2>err &&
 803         test_i18ngrep "Applying autostash resulted in conflicts." err &&
 804         git show HEAD:file >merge-result &&
 805         test_cmp result.1-9 merge-result &&
 806         git stash show -p >actual &&
 807         test_cmp expect actual
 808 '
 809
 810 cat >expected.branch <<\EOF
 811 Merge branch 'c5-branch' (early part) into master
 812 EOF
 813 cat >expected.tag <<\EOF
 814 Merge commit 'c5~1' into master
 815 EOF
 816
 817 test_expect_success 'merge early part of c2' '
 818         git reset --hard c3 &&
 819         echo c4 >c4.c &&
 820         git add c4.c &&
 821         git commit -m c4 &&
 822         git tag c4 &&
 823         echo c5 >c5.c &&
 824         git add c5.c &&
 825         git commit -m c5 &&
 826         git tag c5 &&
 827         git reset --hard c3 &&
 828         echo c6 >c6.c &&
 829         git add c6.c &&
 830         git commit -m c6 &&
 831         git tag c6 &&
 832         git branch -f c5-branch c5 &&
 833         git merge c5-branch~1 &&
 834         git show -s --pretty=tformat:%s HEAD >actual.branch &&
 835         git reset --keep HEAD^ &&
 836         git merge c5~1 &&
 837         git show -s --pretty=tformat:%s HEAD >actual.tag &&
 838         test_cmp expected.branch actual.branch &&
 839         test_cmp expected.tag actual.tag
 840 '
 841
 842 test_debug 'git log --graph --decorate --oneline --all'
 843
 844 test_expect_success 'merge --no-ff --no-commit && commit' '
 845         git reset --hard c0 &&
 846         git merge --no-ff --no-commit c1 &&
 847         EDITOR=: git commit &&
 848         verify_parents $c0 $c1
 849 '
 850
 851 test_debug 'git log --graph --decorate --oneline --all'
 852
 853 test_expect_success 'amending no-ff merge commit' '
 854         EDITOR=: git commit --amend &&
 855         verify_parents $c0 $c1
 856 '
 857
 858 test_debug 'git log --graph --decorate --oneline --all'
 859
 860 cat >editor <<\EOF
 861 #!/bin/sh
 862 # Add a new message string that was not in the template
 863 (
 864         echo "Merge work done on the side branch c1"
 865         echo
 866         cat "$1"
 867 ) >"$1.tmp" && mv "$1.tmp" "$1"
 868 # strip comments and blank lines from end of message
 869 sed -e '/^#/d' "$1" | sed -e :a -e '/^\n*$/{$d;N;ba' -e '}' >expected
 870 EOF
 871 chmod 755 editor
 872
 873 test_expect_success 'merge --no-ff --edit' '
 874         git reset --hard c0 &&
 875         EDITOR=./editor git merge --no-ff --edit c1 &&
 876         verify_parents $c0 $c1 &&
 877         git cat-file commit HEAD >raw &&
 878         grep "work done on the side branch" raw &&
 879         sed "1,/^$/d" >actual raw &&
 880         test_cmp expected actual
 881 '
 882
 883 test_expect_success 'merge annotated/signed tag w/o tracking' '
 884         test_when_finished "rm -rf dst; git tag -d anno1" &&
 885         git tag -a -m "anno c1" anno1 c1 &&
 886         git init dst &&
 887         git rev-parse c1 >dst/expect &&
 888         (
 889                 # c0 fast-forwards to c1 but because this repository
 890                 # is not a "downstream" whose refs/tags follows along
 891                 # tag from the "upstream", this pull defaults to --no-ff
 892                 cd dst &&
 893                 git pull .. c0 &&
 894                 git pull .. anno1 &&
 895                 git rev-parse HEAD^2 >actual &&
 896                 test_cmp expect actual
 897         )
 898 '
 899
 900 test_expect_success 'merge annotated/signed tag w/ tracking' '
 901         test_when_finished "rm -rf dst; git tag -d anno1" &&
 902         git tag -a -m "anno c1" anno1 c1 &&
 903         git init dst &&
 904         git rev-parse c1 >dst/expect &&
 905         (
 906                 # c0 fast-forwards to c1 and because this repository
 907                 # is a "downstream" whose refs/tags follows along
 908                 # tag from the "upstream", this pull defaults to --ff
 909                 cd dst &&
 910                 git remote add origin .. &&
 911                 git pull origin c0 &&
 912                 git fetch origin &&
 913                 git merge anno1 &&
 914                 git rev-parse HEAD >actual &&
 915                 test_cmp expect actual
 916         )
 917 '
 918
 919 test_expect_success GPG 'merge --ff-only tag' '
 920         git reset --hard c0 &&
 921         git commit --allow-empty -m "A newer commit" &&
 922         git tag -s -m "A newer commit" signed &&
 923         git reset --hard c0 &&
 924
 925         git merge --ff-only signed &&
 926         git rev-parse signed^0 >expect &&
 927         git rev-parse HEAD >actual &&
 928         test_cmp expect actual
 929 '
 930
 931 test_expect_success GPG 'merge --no-edit tag should skip editor' '
 932         git reset --hard c0 &&
 933         git commit --allow-empty -m "A newer commit" &&
 934         git tag -f -s -m "A newer commit" signed &&
 935         git reset --hard c0 &&
 936
 937         EDITOR=false git merge --no-edit --no-ff signed &&
 938         git rev-parse signed^0 >expect &&
 939         git rev-parse HEAD^2 >actual &&
 940         test_cmp expect actual
 941 '
 942
 943 test_expect_success 'set up mod-256 conflict scenario' '
 944         # 256 near-identical stanzas...
 945         for i in $(test_seq 1 256); do
 946                 for j in 1 2 3 4 5; do
 947                         echo $i-$j
 948                 done
 949         done >file &&
 950         git add file &&
 951         git commit -m base &&
 952
 953         # one side changes the first line of each to "master"
 954         sed s/-1/-master/ file >tmp &&
 955         mv tmp file &&
 956         git commit -am master &&
 957
 958         # and the other to "side"; merging the two will
 959         # yield 256 separate conflicts
 960         git checkout -b side HEAD^ &&
 961         sed s/-1/-side/ file >tmp &&
 962         mv tmp file &&
 963         git commit -am side
 964 '
 965
 966 test_expect_success 'merge detects mod-256 conflicts (recursive)' '
 967         git reset --hard &&
 968         test_must_fail git merge -s recursive master
 969 '
 970
 971 test_expect_success 'merge detects mod-256 conflicts (resolve)' '
 972         git reset --hard &&
 973         test_must_fail git merge -s resolve master
 974 '
 975
 976 test_expect_success 'merge nothing into void' '
 977         git init void &&
 978         (
 979                 cd void &&
 980                 git remote add up .. &&
 981                 git fetch up &&
 982                 test_must_fail git merge FETCH_HEAD
 983         )
 984 '
 985
 986 test_expect_success 'merge can be completed with --continue' '
 987         git reset --hard c0 &&
 988         git merge --no-ff --no-commit c1 &&
 989         git merge --continue &&
 990         verify_parents $c0 $c1
 991 '
 992
 993 write_script .git/FAKE_EDITOR <<EOF
 994 # kill -TERM command added below.
 995 EOF
 996
 997 test_expect_success EXECKEEPSPID 'killed merge can be completed with --continue' '
 998         git reset --hard c0 &&
 999         ! "$SHELL_PATH" -c '\''
1000           echo kill -TERM $$ >>.git/FAKE_EDITOR
1001           GIT_EDITOR=.git/FAKE_EDITOR
1002           export GIT_EDITOR
1003           exec git merge --no-ff --edit c1'\'' &&
1004         git merge --continue &&
1005         verify_parents $c0 $c1
1006 '
1007
1008 test_expect_success 'merge --quit' '
1009         git init merge-quit &&
1010         (
1011                 cd merge-quit &&
1012                 test_commit base &&
1013                 echo one >>base.t &&
1014                 git commit -am one &&
1015                 git branch one &&
1016                 git checkout base &&
1017                 echo two >>base.t &&
1018                 git commit -am two &&
1019                 test_must_fail git -c rerere.enabled=true merge one &&
1020                 test_path_is_file .git/MERGE_HEAD &&
1021                 test_path_is_file .git/MERGE_MODE &&
1022                 test_path_is_file .git/MERGE_MSG &&
1023                 git rerere status >rerere.before &&
1024                 git merge --quit &&
1025                 test_path_is_missing .git/MERGE_HEAD &&
1026                 test_path_is_missing .git/MERGE_MODE &&
1027                 test_path_is_missing .git/MERGE_MSG &&
1028                 git rerere status >rerere.after &&
1029                 test_must_be_empty rerere.after &&
1030                 ! test_cmp rerere.after rerere.before
1031         )
1032 '
1033
1034 test_expect_success 'merge suggests matching remote refname' '
1035         git commit --allow-empty -m not-local &&
1036         git update-ref refs/remotes/origin/not-local HEAD &&
1037         git reset --hard HEAD^ &&
1038
1039         # This is white-box testing hackery; we happen to know
1040         # that reading packed refs is more picky about the memory
1041         # ownership of strings we pass to for_each_ref() callbacks.
1042         git pack-refs --all --prune &&
1043
1044         test_must_fail git merge not-local 2>stderr &&
1045         grep origin/not-local stderr
1046 '
1047
1048 test_expect_success 'suggested names are not ambiguous' '
1049         git update-ref refs/heads/origin/not-local HEAD &&
1050         test_must_fail git merge not-local 2>stderr &&
1051         grep remotes/origin/not-local stderr
1052 '
1053
1054 test_done