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'
  18 --------
  19        - [master] Merge commit 'c1'
  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
  31 printf '%s\n' 1 2 3 4 5 6 7 8 9 >file
  32 printf '%s\n' '1 X' 2 3 4 5 6 7 8 9 >file.1
  33 printf '%s\n' 1 2 3 4 '5 X' 6 7 8 9 >file.5
  34 printf '%s\n' 1 2 3 4 5 6 7 8 '9 X' >file.9
  35 printf '%s\n' '1 X' 2 3 4 5 6 7 8 9 >result.1
  36 printf '%s\n' '1 X' 2 3 4 '5 X' 6 7 8 9 >result.1-5
  37 printf '%s\n' '1 X' 2 3 4 '5 X' 6 7 8 '9 X' >result.1-5-9
  38 >empty
  39
  40 create_merge_msgs () {
  41         echo "Merge commit 'c2'" >msg.1-5 &&
  42         echo "Merge commit 'c2'; commit 'c3'" >msg.1-5-9 &&
  43         {
  44                 echo "Squashed commit of the following:" &&
  45                 echo &&
  46                 git log --no-merges ^HEAD c1
  47         } >squash.1 &&
  48         {
  49                 echo "Squashed commit of the following:" &&
  50                 echo &&
  51                 git log --no-merges ^HEAD c2
  52         } >squash.1-5 &&
  53         {
  54                 echo "Squashed commit of the following:" &&
  55                 echo &&
  56                 git log --no-merges ^HEAD c2 c3
  57         } >squash.1-5-9 &&
  58         echo >msg.nolog &&
  59         {
  60                 echo "* commit 'c3':" &&
  61                 echo "  commit 3" &&
  62                 echo
  63         } >msg.log
  64 }
  65
  66 verify_merge () {
  67         test_cmp "$2" "$1" &&
  68         git update-index --refresh &&
  69         git diff --exit-code &&
  70         if test -n "$3"
  71         then
  72                 git show -s --pretty=format:%s HEAD >msg.act &&
  73                 test_cmp "$3" msg.act
  74         fi
  75 }
  76
  77 verify_head () {
  78         echo "$1" >head.expected &&
  79         git rev-parse HEAD >head.actual &&
  80         test_cmp head.expected head.actual
  81 }
  82
  83 verify_parents () {
  84         printf '%s\n' "$@" >parents.expected &&
  85         >parents.actual &&
  86         i=1 &&
  87         while test $i -le $#
  88         do
  89                 git rev-parse HEAD^$i >>parents.actual &&
  90                 i=$(expr $i + 1) ||
  91                 return 1
  92         done &&
  93         test_must_fail git rev-parse --verify "HEAD^$i" &&
  94         test_cmp parents.expected parents.actual
  95 }
  96
  97 verify_mergeheads () {
  98         printf '%s\n' "$@" >mergehead.expected &&
  99         test_cmp mergehead.expected .git/MERGE_HEAD
 100 }
 101
 102 verify_no_mergehead () {
 103         ! test -e .git/MERGE_HEAD
 104 }
 105
 106 test_expect_success 'setup' '
 107         git add file &&
 108         test_tick &&
 109         git commit -m "commit 0" &&
 110         git tag c0 &&
 111         c0=$(git rev-parse HEAD) &&
 112         cp file.1 file &&
 113         git add file &&
 114         test_tick &&
 115         git commit -m "commit 1" &&
 116         git tag c1 &&
 117         c1=$(git rev-parse HEAD) &&
 118         git reset --hard "$c0" &&
 119         cp file.5 file &&
 120         git add file &&
 121         test_tick &&
 122         git commit -m "commit 2" &&
 123         git tag c2 &&
 124         c2=$(git rev-parse HEAD) &&
 125         git reset --hard "$c0" &&
 126         cp file.9 file &&
 127         git add file &&
 128         test_tick &&
 129         git commit -m "commit 3" &&
 130         git tag c3 &&
 131         c3=$(git rev-parse HEAD)
 132         git reset --hard "$c0" &&
 133         create_merge_msgs
 134 '
 135
 136 test_debug 'git log --graph --decorate --oneline --all'
 137
 138 test_expect_success 'test option parsing' '
 139         test_must_fail git merge -$ c1 &&
 140         test_must_fail git merge --no-such c1 &&
 141         test_must_fail git merge -s foobar c1 &&
 142         test_must_fail git merge -s=foobar c1 &&
 143         test_must_fail git merge -m &&
 144         test_must_fail git merge
 145 '
 146
 147 test_expect_success 'merge -h with invalid index' '
 148         mkdir broken &&
 149         (
 150                 cd broken &&
 151                 git init &&
 152                 >.git/index &&
 153                 test_expect_code 129 git merge -h 2>usage
 154         ) &&
 155         grep "[Uu]sage: git merge" broken/usage
 156 '
 157
 158 test_expect_success 'reject non-strategy with a git-merge-foo name' '
 159         test_must_fail git merge -s index c1
 160 '
 161
 162 test_expect_success 'merge c0 with c1' '
 163         echo "OBJID HEAD@{0}: merge c1: Fast-forward" >reflog.expected &&
 164
 165         git reset --hard c0 &&
 166         git merge c1 &&
 167         verify_merge file result.1 &&
 168         verify_head "$c1" &&
 169
 170         git reflog -1 >reflog.actual &&
 171         sed "s/$_x05[0-9a-f]*/OBJID/g" reflog.actual >reflog.fuzzy &&
 172         test_cmp reflog.expected reflog.fuzzy
 173 '
 174
 175 test_debug 'git log --graph --decorate --oneline --all'
 176
 177 test_expect_success 'merge c0 with c1 with --ff-only' '
 178         git reset --hard c0 &&
 179         git merge --ff-only c1 &&
 180         git merge --ff-only HEAD c0 c1 &&
 181         verify_merge file result.1 &&
 182         verify_head "$c1"
 183 '
 184
 185 test_debug 'git log --graph --decorate --oneline --all'
 186
 187 test_expect_success 'merge from unborn branch' '
 188         git checkout -f master &&
 189         test_might_fail git branch -D kid &&
 190
 191         echo "OBJID HEAD@{0}: initial pull" >reflog.expected &&
 192
 193         git checkout --orphan kid &&
 194         test_when_finished "git checkout -f master" &&
 195         git rm -fr . &&
 196         test_tick &&
 197         git merge --ff-only c1 &&
 198         verify_merge file result.1 &&
 199         verify_head "$c1" &&
 200
 201         git reflog -1 >reflog.actual &&
 202         sed "s/$_x05[0-9a-f][0-9a-f]/OBJID/g" reflog.actual >reflog.fuzzy &&
 203         test_cmp reflog.expected reflog.fuzzy
 204 '
 205
 206 test_debug 'git log --graph --decorate --oneline --all'
 207
 208 test_expect_success 'merge c1 with c2' '
 209         git reset --hard c1 &&
 210         test_tick &&
 211         git merge c2 &&
 212         verify_merge file result.1-5 msg.1-5 &&
 213         verify_parents $c1 $c2
 214 '
 215
 216 test_debug 'git log --graph --decorate --oneline --all'
 217
 218 test_expect_success 'merge c1 with c2 and c3' '
 219         git reset --hard c1 &&
 220         test_tick &&
 221         git merge c2 c3 &&
 222         verify_merge file result.1-5-9 msg.1-5-9 &&
 223         verify_parents $c1 $c2 $c3
 224 '
 225
 226 test_debug 'git log --graph --decorate --oneline --all'
 227
 228 test_expect_success 'merges with --ff-only' '
 229         git reset --hard c1 &&
 230         test_tick &&
 231         test_must_fail git merge --ff-only c2 &&
 232         test_must_fail git merge --ff-only c3 &&
 233         test_must_fail git merge --ff-only c2 c3 &&
 234         git reset --hard c0 &&
 235         git merge c3 &&
 236         verify_head $c3
 237 '
 238
 239 test_expect_success 'merges with merge.ff=only' '
 240         git reset --hard c1 &&
 241         test_tick &&
 242         test_when_finished "git config --unset merge.ff" &&
 243         git config merge.ff only &&
 244         test_must_fail git merge c2 &&
 245         test_must_fail git merge c3 &&
 246         test_must_fail git merge c2 c3 &&
 247         git reset --hard c0 &&
 248         git merge c3 &&
 249         verify_head $c3
 250 '
 251
 252 test_expect_success 'merge c0 with c1 (no-commit)' '
 253         git reset --hard c0 &&
 254         git merge --no-commit c1 &&
 255         verify_merge file result.1 &&
 256         verify_head $c1
 257 '
 258
 259 test_debug 'git log --graph --decorate --oneline --all'
 260
 261 test_expect_success 'merge c1 with c2 (no-commit)' '
 262         git reset --hard c1 &&
 263         git merge --no-commit c2 &&
 264         verify_merge file result.1-5 &&
 265         verify_head $c1 &&
 266         verify_mergeheads $c2
 267 '
 268
 269 test_debug 'git log --graph --decorate --oneline --all'
 270
 271 test_expect_success 'merge c1 with c2 and c3 (no-commit)' '
 272         git reset --hard c1 &&
 273         git merge --no-commit c2 c3 &&
 274         verify_merge file result.1-5-9 &&
 275         verify_head $c1 &&
 276         verify_mergeheads $c2 $c3
 277 '
 278
 279 test_debug 'git log --graph --decorate --oneline --all'
 280
 281 test_expect_success 'merge c0 with c1 (squash)' '
 282         git reset --hard c0 &&
 283         git merge --squash c1 &&
 284         verify_merge file result.1 &&
 285         verify_head $c0 &&
 286         verify_no_mergehead &&
 287         test_cmp squash.1 .git/SQUASH_MSG
 288 '
 289
 290 test_debug 'git log --graph --decorate --oneline --all'
 291
 292 test_expect_success 'merge c0 with c1 (squash, ff-only)' '
 293         git reset --hard c0 &&
 294         git merge --squash --ff-only c1 &&
 295         verify_merge file result.1 &&
 296         verify_head $c0 &&
 297         verify_no_mergehead &&
 298         test_cmp squash.1 .git/SQUASH_MSG
 299 '
 300
 301 test_debug 'git log --graph --decorate --oneline --all'
 302
 303 test_expect_success 'merge c1 with c2 (squash)' '
 304         git reset --hard c1 &&
 305         git merge --squash c2 &&
 306         verify_merge file result.1-5 &&
 307         verify_head $c1 &&
 308         verify_no_mergehead &&
 309         test_cmp squash.1-5 .git/SQUASH_MSG
 310 '
 311
 312 test_debug 'git log --graph --decorate --oneline --all'
 313
 314 test_expect_success 'unsuccesful merge of c1 with c2 (squash, ff-only)' '
 315         git reset --hard c1 &&
 316         test_must_fail git merge --squash --ff-only c2
 317 '
 318
 319 test_debug 'git log --graph --decorate --oneline --all'
 320
 321 test_expect_success 'merge c1 with c2 and c3 (squash)' '
 322         git reset --hard c1 &&
 323         git merge --squash c2 c3 &&
 324         verify_merge file result.1-5-9 &&
 325         verify_head $c1 &&
 326         verify_no_mergehead &&
 327         test_cmp squash.1-5-9 .git/SQUASH_MSG
 328 '
 329
 330 test_debug 'git log --graph --decorate --oneline --all'
 331
 332 test_expect_success 'merge c1 with c2 (no-commit in config)' '
 333         git reset --hard c1 &&
 334         git config branch.master.mergeoptions "--no-commit" &&
 335         git merge c2 &&
 336         verify_merge file result.1-5 &&
 337         verify_head $c1 &&
 338         verify_mergeheads $c2
 339 '
 340
 341 test_debug 'git log --graph --decorate --oneline --all'
 342
 343 test_expect_success 'merge c1 with c2 (log in config)' '
 344         git config branch.master.mergeoptions "" &&
 345         git reset --hard c1 &&
 346         git merge --log c2 &&
 347         git show -s --pretty=tformat:%s%n%b >expect &&
 348
 349         git config branch.master.mergeoptions --log &&
 350         git reset --hard c1 &&
 351         git merge c2 &&
 352         git show -s --pretty=tformat:%s%n%b >actual &&
 353
 354         test_cmp expect actual
 355 '
 356
 357 test_expect_success 'merge c1 with c2 (log in config gets overridden)' '
 358         test_when_finished "git config --remove-section branch.master" &&
 359         test_when_finished "git config --remove-section merge" &&
 360         test_might_fail git config --remove-section branch.master &&
 361         test_might_fail git config --remove-section merge &&
 362
 363         git reset --hard c1 &&
 364         git merge c2 &&
 365         git show -s --pretty=tformat:%s%n%b >expect &&
 366
 367         git config branch.master.mergeoptions "--no-log" &&
 368         git config merge.log true &&
 369         git reset --hard c1 &&
 370         git merge c2 &&
 371         git show -s --pretty=tformat:%s%n%b >actual &&
 372
 373         test_cmp expect actual
 374 '
 375
 376 test_expect_success 'merge c1 with c2 (squash in config)' '
 377         git reset --hard c1 &&
 378         git config branch.master.mergeoptions "--squash" &&
 379         git merge c2 &&
 380         verify_merge file result.1-5 &&
 381         verify_head $c1 &&
 382         verify_no_mergehead &&
 383         test_cmp squash.1-5 .git/SQUASH_MSG
 384 '
 385
 386 test_debug 'git log --graph --decorate --oneline --all'
 387
 388 test_expect_success 'override config option -n with --summary' '
 389         git reset --hard c1 &&
 390         git config branch.master.mergeoptions "-n" &&
 391         test_tick &&
 392         git merge --summary c2 >diffstat.txt &&
 393         verify_merge file result.1-5 msg.1-5 &&
 394         verify_parents $c1 $c2 &&
 395         if ! grep "^ file |  *2 +-$" diffstat.txt
 396         then
 397                 echo "[OOPS] diffstat was not generated with --summary"
 398                 false
 399         fi
 400 '
 401
 402 test_expect_success 'override config option -n with --stat' '
 403         git reset --hard c1 &&
 404         git config branch.master.mergeoptions "-n" &&
 405         test_tick &&
 406         git merge --stat c2 >diffstat.txt &&
 407         verify_merge file result.1-5 msg.1-5 &&
 408         verify_parents $c1 $c2 &&
 409         if ! grep "^ file |  *2 +-$" diffstat.txt
 410         then
 411                 echo "[OOPS] diffstat was not generated with --stat"
 412                 false
 413         fi
 414 '
 415
 416 test_debug 'git log --graph --decorate --oneline --all'
 417
 418 test_expect_success 'override config option --stat' '
 419         git reset --hard c1 &&
 420         git config branch.master.mergeoptions "--stat" &&
 421         test_tick &&
 422         git merge -n c2 >diffstat.txt &&
 423         verify_merge file result.1-5 msg.1-5 &&
 424         verify_parents $c1 $c2 &&
 425         if grep "^ file |  *2 +-$" diffstat.txt
 426         then
 427                 echo "[OOPS] diffstat was generated"
 428                 false
 429         fi
 430 '
 431
 432 test_debug 'git log --graph --decorate --oneline --all'
 433
 434 test_expect_success 'merge c1 with c2 (override --no-commit)' '
 435         git reset --hard c1 &&
 436         git config branch.master.mergeoptions "--no-commit" &&
 437         test_tick &&
 438         git merge --commit c2 &&
 439         verify_merge file result.1-5 msg.1-5 &&
 440         verify_parents $c1 $c2
 441 '
 442
 443 test_debug 'git log --graph --decorate --oneline --all'
 444
 445 test_expect_success 'merge c1 with c2 (override --squash)' '
 446         git reset --hard c1 &&
 447         git config branch.master.mergeoptions "--squash" &&
 448         test_tick &&
 449         git merge --no-squash c2 &&
 450         verify_merge file result.1-5 msg.1-5 &&
 451         verify_parents $c1 $c2
 452 '
 453
 454 test_debug 'git log --graph --decorate --oneline --all'
 455
 456 test_expect_success 'merge c0 with c1 (no-ff)' '
 457         git reset --hard c0 &&
 458         git config branch.master.mergeoptions "" &&
 459         test_tick &&
 460         git merge --no-ff c1 &&
 461         verify_merge file result.1 &&
 462         verify_parents $c0 $c1
 463 '
 464
 465 test_debug 'git log --graph --decorate --oneline --all'
 466
 467 test_expect_success 'merge c0 with c1 (merge.ff=false)' '
 468         git reset --hard c0 &&
 469         git config merge.ff false &&
 470         test_tick &&
 471         git merge c1 &&
 472         git config --remove-section merge &&
 473         verify_merge file result.1 &&
 474         verify_parents $c0 $c1
 475 '
 476 test_debug 'git log --graph --decorate --oneline --all'
 477
 478 test_expect_success 'combine branch.master.mergeoptions with merge.ff' '
 479         git reset --hard c0 &&
 480         git config branch.master.mergeoptions --ff &&
 481         git config merge.ff false &&
 482         test_tick &&
 483         git merge c1 &&
 484         git config --remove-section "branch.master" &&
 485         git config --remove-section "merge" &&
 486         verify_merge file result.1 &&
 487         verify_parents "$c0"
 488 '
 489
 490 test_expect_success 'tolerate unknown values for merge.ff' '
 491         git reset --hard c0 &&
 492         git config merge.ff something-new &&
 493         test_tick &&
 494         git merge c1 2>message &&
 495         git config --remove-section "merge" &&
 496         verify_head "$c1" &&
 497         test_cmp empty message
 498 '
 499
 500 test_expect_success 'combining --squash and --no-ff is refused' '
 501         git reset --hard c0 &&
 502         test_must_fail git merge --squash --no-ff c1 &&
 503         test_must_fail git merge --no-ff --squash c1
 504 '
 505
 506 test_expect_success 'combining --ff-only and --no-ff is refused' '
 507         test_must_fail git merge --ff-only --no-ff c1 &&
 508         test_must_fail git merge --no-ff --ff-only c1
 509 '
 510
 511 test_expect_success 'merge c0 with c1 (ff overrides no-ff)' '
 512         git reset --hard c0 &&
 513         git config branch.master.mergeoptions "--no-ff" &&
 514         git merge --ff c1 &&
 515         verify_merge file result.1 &&
 516         verify_head $c1
 517 '
 518
 519 test_expect_success 'merge log message' '
 520         git reset --hard c0 &&
 521         git merge --no-log c2 &&
 522         git show -s --pretty=format:%b HEAD >msg.act &&
 523         test_cmp msg.nolog msg.act &&
 524
 525         git merge --log c3 &&
 526         git show -s --pretty=format:%b HEAD >msg.act &&
 527         test_cmp msg.log msg.act &&
 528
 529         git reset --hard HEAD^ &&
 530         git config merge.log yes &&
 531         git merge c3 &&
 532         git show -s --pretty=format:%b HEAD >msg.act &&
 533         test_cmp msg.log msg.act
 534 '
 535
 536 test_debug 'git log --graph --decorate --oneline --all'
 537
 538 test_expect_success 'merge c1 with c0, c2, c0, and c1' '
 539        git reset --hard c1 &&
 540        git config branch.master.mergeoptions "" &&
 541        test_tick &&
 542        git merge c0 c2 c0 c1 &&
 543        verify_merge file result.1-5 &&
 544        verify_parents $c1 $c2
 545 '
 546
 547 test_debug 'git log --graph --decorate --oneline --all'
 548
 549 test_expect_success 'merge c1 with c0, c2, c0, and c1' '
 550        git reset --hard c1 &&
 551        git config branch.master.mergeoptions "" &&
 552        test_tick &&
 553        git merge c0 c2 c0 c1 &&
 554        verify_merge file result.1-5 &&
 555        verify_parents $c1 $c2
 556 '
 557
 558 test_debug 'git log --graph --decorate --oneline --all'
 559
 560 test_expect_success 'merge c1 with c1 and c2' '
 561        git reset --hard c1 &&
 562        git config branch.master.mergeoptions "" &&
 563        test_tick &&
 564        git merge c1 c2 &&
 565        verify_merge file result.1-5 &&
 566        verify_parents $c1 $c2
 567 '
 568
 569 test_debug 'git log --graph --decorate --oneline --all'
 570
 571 test_expect_success 'merge fast-forward in a dirty tree' '
 572        git reset --hard c0 &&
 573        mv file file1 &&
 574        cat file1 >file &&
 575        rm -f file1 &&
 576        git merge c2
 577 '
 578
 579 test_debug 'git log --graph --decorate --oneline --all'
 580
 581 test_expect_success 'in-index merge' '
 582         git reset --hard c0 &&
 583         git merge --no-ff -s resolve c1 >out &&
 584         test_i18ngrep "Wonderful." out &&
 585         verify_parents $c0 $c1
 586 '
 587
 588 test_debug 'git log --graph --decorate --oneline --all'
 589
 590 test_expect_success 'refresh the index before merging' '
 591         git reset --hard c1 &&
 592         cp file file.n && mv -f file.n file &&
 593         git merge c3
 594 '
 595
 596 cat >expected.branch <<\EOF
 597 Merge branch 'c5-branch' (early part)
 598 EOF
 599 cat >expected.tag <<\EOF
 600 Merge commit 'c5~1'
 601 EOF
 602
 603 test_expect_success 'merge early part of c2' '
 604         git reset --hard c3 &&
 605         echo c4 >c4.c &&
 606         git add c4.c &&
 607         git commit -m c4 &&
 608         git tag c4 &&
 609         echo c5 >c5.c &&
 610         git add c5.c &&
 611         git commit -m c5 &&
 612         git tag c5 &&
 613         git reset --hard c3 &&
 614         echo c6 >c6.c &&
 615         git add c6.c &&
 616         git commit -m c6 &&
 617         git tag c6 &&
 618         git branch -f c5-branch c5 &&
 619         git merge c5-branch~1 &&
 620         git show -s --pretty=format:%s HEAD >actual.branch &&
 621         git reset --keep HEAD^ &&
 622         git merge c5~1 &&
 623         git show -s --pretty=format:%s HEAD >actual.tag &&
 624         test_cmp expected.branch actual.branch &&
 625         test_cmp expected.tag actual.tag
 626 '
 627
 628 test_debug 'git log --graph --decorate --oneline --all'
 629
 630 test_expect_success 'merge --no-ff --no-commit && commit' '
 631         git reset --hard c0 &&
 632         git merge --no-ff --no-commit c1 &&
 633         EDITOR=: git commit &&
 634         verify_parents $c0 $c1
 635 '
 636
 637 test_debug 'git log --graph --decorate --oneline --all'
 638
 639 test_expect_success 'amending no-ff merge commit' '
 640         EDITOR=: git commit --amend &&
 641         verify_parents $c0 $c1
 642 '
 643
 644 test_debug 'git log --graph --decorate --oneline --all'
 645
 646 cat >editor <<\EOF
 647 #!/bin/sh
 648 # Add a new message string that was not in the template
 649 (
 650         echo "Merge work done on the side branch c1"
 651         echo
 652         cat <"$1"
 653 ) >"$1.tmp" && mv "$1.tmp" "$1"
 654 # strip comments and blank lines from end of message
 655 sed -e '/^#/d' < "$1" | sed -e :a -e '/^\n*$/{$d;N;ba' -e '}' > expected
 656 EOF
 657 chmod 755 editor
 658
 659 test_expect_success 'merge --no-ff --edit' '
 660         git reset --hard c0 &&
 661         EDITOR=./editor git merge --no-ff --edit c1 &&
 662         verify_parents $c0 $c1 &&
 663         git cat-file commit HEAD >raw &&
 664         grep "work done on the side branch" raw &&
 665         sed "1,/^$/d" >actual raw &&
 666         test_cmp actual expected
 667 '
 668
 669 test_done