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 test_expect_success 'set up test data and helpers' '
  32         printf "%s\n" 1 2 3 4 5 6 7 8 9 >file &&
  33         printf "%s\n" "1 X" 2 3 4 5 6 7 8 9 >file.1 &&
  34         printf "%s\n" 1 2 3 4 "5 X" 6 7 8 9 >file.5 &&
  35         printf "%s\n" 1 2 3 4 5 6 7 8 "9 X" >file.9 &&
  36         printf "%s\n" "1 X" 2 3 4 5 6 7 8 9 >result.1 &&
  37         printf "%s\n" "1 X" 2 3 4 "5 X" 6 7 8 9 >result.1-5 &&
  38         printf "%s\n" "1 X" 2 3 4 "5 X" 6 7 8 "9 X" >result.1-5-9 &&
  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 $i + 1) ||
  91                         return 1
  92                 done &&
  93                 test_cmp parents.expected parents.actual
  94         } &&
  95
  96         verify_mergeheads() {
  97                 printf "%s\n" "$@" >mergehead.expected &&
  98                 test_cmp mergehead.expected .git/MERGE_HEAD
  99         } &&
 100
 101         verify_no_mergehead() {
 102                 ! test -e .git/MERGE_HEAD
 103         }
 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 'reject non-strategy with a git-merge-foo name' '
 148         test_must_fail git merge -s index c1
 149 '
 150
 151 test_expect_success 'merge c0 with c1' '
 152         echo "OBJID HEAD@{0}: merge c1: Fast-forward" >reflog.expected &&
 153
 154         git reset --hard c0 &&
 155         git merge c1 &&
 156         verify_merge file result.1 &&
 157         verify_head "$c1" &&
 158
 159         git reflog -1 >reflog.actual &&
 160         sed "s/$_x05[0-9a-f]*/OBJID/g" reflog.actual >reflog.fuzzy &&
 161         test_cmp reflog.expected reflog.fuzzy
 162 '
 163
 164 test_debug 'git log --graph --decorate --oneline --all'
 165
 166 test_expect_success 'merge c0 with c1 with --ff-only' '
 167         git reset --hard c0 &&
 168         git merge --ff-only c1 &&
 169         git merge --ff-only HEAD c0 c1 &&
 170         verify_merge file result.1 &&
 171         verify_head "$c1"
 172 '
 173
 174 test_debug 'git log --graph --decorate --oneline --all'
 175
 176 test_expect_success 'merge from unborn branch' '
 177         git checkout -f master &&
 178         test_might_fail git branch -D kid &&
 179
 180         echo "OBJID HEAD@{0}: initial pull" >reflog.expected &&
 181
 182         git checkout --orphan kid &&
 183         test_when_finished "git checkout -f master" &&
 184         git rm -fr . &&
 185         test_tick &&
 186         git merge --ff-only c1 &&
 187         verify_merge file result.1 &&
 188         verify_head "$c1" &&
 189
 190         git reflog -1 >reflog.actual &&
 191         sed "s/$_x05[0-9a-f][0-9a-f]/OBJID/g" reflog.actual >reflog.fuzzy &&
 192         test_cmp reflog.expected reflog.fuzzy
 193 '
 194
 195 test_debug 'git log --graph --decorate --oneline --all'
 196
 197 test_expect_success 'merge c1 with c2' '
 198         git reset --hard c1 &&
 199         test_tick &&
 200         git merge c2 &&
 201         verify_merge file result.1-5 msg.1-5 &&
 202         verify_parents $c1 $c2
 203 '
 204
 205 test_debug 'git log --graph --decorate --oneline --all'
 206
 207 test_expect_success 'merge c1 with c2 and c3' '
 208         git reset --hard c1 &&
 209         test_tick &&
 210         git merge c2 c3 &&
 211         verify_merge file result.1-5-9 msg.1-5-9 &&
 212         verify_parents $c1 $c2 $c3
 213 '
 214
 215 test_debug 'git log --graph --decorate --oneline --all'
 216
 217 test_expect_success 'failing merges with --ff-only' '
 218         git reset --hard c1 &&
 219         test_tick &&
 220         test_must_fail git merge --ff-only c2 &&
 221         test_must_fail git merge --ff-only c3 &&
 222         test_must_fail git merge --ff-only c2 c3
 223 '
 224
 225 test_expect_success 'merge c0 with c1 (no-commit)' '
 226         git reset --hard c0 &&
 227         git merge --no-commit c1 &&
 228         verify_merge file result.1 &&
 229         verify_head $c1
 230 '
 231
 232 test_debug 'git log --graph --decorate --oneline --all'
 233
 234 test_expect_success 'merge c1 with c2 (no-commit)' '
 235         git reset --hard c1 &&
 236         git merge --no-commit c2 &&
 237         verify_merge file result.1-5 &&
 238         verify_head $c1 &&
 239         verify_mergeheads $c2
 240 '
 241
 242 test_debug 'git log --graph --decorate --oneline --all'
 243
 244 test_expect_success 'merge c1 with c2 and c3 (no-commit)' '
 245         git reset --hard c1 &&
 246         git merge --no-commit c2 c3 &&
 247         verify_merge file result.1-5-9 &&
 248         verify_head $c1 &&
 249         verify_mergeheads $c2 $c3
 250 '
 251
 252 test_debug 'git log --graph --decorate --oneline --all'
 253
 254 test_expect_success 'merge c0 with c1 (squash)' '
 255         git reset --hard c0 &&
 256         git merge --squash c1 &&
 257         verify_merge file result.1 &&
 258         verify_head $c0 &&
 259         verify_no_mergehead &&
 260         test_cmp squash.1 .git/SQUASH_MSG
 261 '
 262
 263 test_debug 'git log --graph --decorate --oneline --all'
 264
 265 test_expect_success 'merge c0 with c1 (squash, ff-only)' '
 266         git reset --hard c0 &&
 267         git merge --squash --ff-only c1 &&
 268         verify_merge file result.1 &&
 269         verify_head $c0 &&
 270         verify_no_mergehead &&
 271         test_cmp squash.1 .git/SQUASH_MSG
 272 '
 273
 274 test_debug 'git log --graph --decorate --oneline --all'
 275
 276 test_expect_success 'merge c1 with c2 (squash)' '
 277         git reset --hard c1 &&
 278         git merge --squash c2 &&
 279         verify_merge file result.1-5 &&
 280         verify_head $c1 &&
 281         verify_no_mergehead &&
 282         test_cmp squash.1-5 .git/SQUASH_MSG
 283 '
 284
 285 test_debug 'git log --graph --decorate --oneline --all'
 286
 287 test_expect_success 'unsuccesful merge of c1 with c2 (squash, ff-only)' '
 288         git reset --hard c1 &&
 289         test_must_fail git merge --squash --ff-only c2
 290 '
 291
 292 test_debug 'git log --graph --decorate --oneline --all'
 293
 294 test_expect_success 'merge c1 with c2 and c3 (squash)' '
 295         git reset --hard c1 &&
 296         git merge --squash c2 c3 &&
 297         verify_merge file result.1-5-9 &&
 298         verify_head $c1 &&
 299         verify_no_mergehead &&
 300         test_cmp squash.1-5-9 .git/SQUASH_MSG
 301 '
 302
 303 test_debug 'git log --graph --decorate --oneline --all'
 304
 305 test_expect_success 'merge c1 with c2 (no-commit in config)' '
 306         git reset --hard c1 &&
 307         git config branch.master.mergeoptions "--no-commit" &&
 308         git merge c2 &&
 309         verify_merge file result.1-5 &&
 310         verify_head $c1 &&
 311         verify_mergeheads $c2
 312 '
 313
 314 test_debug 'git log --graph --decorate --oneline --all'
 315
 316 test_expect_success 'merge c1 with c2 (squash in config)' '
 317         git reset --hard c1 &&
 318         git config branch.master.mergeoptions "--squash" &&
 319         git merge c2 &&
 320         verify_merge file result.1-5 &&
 321         verify_head $c1 &&
 322         verify_no_mergehead &&
 323         test_cmp squash.1-5 .git/SQUASH_MSG
 324 '
 325
 326 test_debug 'git log --graph --decorate --oneline --all'
 327
 328 test_expect_success 'override config option -n with --summary' '
 329         git reset --hard c1 &&
 330         git config branch.master.mergeoptions "-n" &&
 331         test_tick &&
 332         git merge --summary c2 >diffstat.txt &&
 333         verify_merge file result.1-5 msg.1-5 &&
 334         verify_parents $c1 $c2 &&
 335         if ! grep "^ file |  *2 +-$" diffstat.txt
 336         then
 337                 echo "[OOPS] diffstat was not generated with --summary"
 338                 false
 339         fi
 340 '
 341
 342 test_expect_success 'override config option -n with --stat' '
 343         git reset --hard c1 &&
 344         git config branch.master.mergeoptions "-n" &&
 345         test_tick &&
 346         git merge --stat c2 >diffstat.txt &&
 347         verify_merge file result.1-5 msg.1-5 &&
 348         verify_parents $c1 $c2 &&
 349         if ! grep "^ file |  *2 +-$" diffstat.txt
 350         then
 351                 echo "[OOPS] diffstat was not generated with --stat"
 352                 false
 353         fi
 354 '
 355
 356 test_debug 'git log --graph --decorate --oneline --all'
 357
 358 test_expect_success 'override config option --stat' '
 359         git reset --hard c1 &&
 360         git config branch.master.mergeoptions "--stat" &&
 361         test_tick &&
 362         git merge -n c2 >diffstat.txt &&
 363         verify_merge file result.1-5 msg.1-5 &&
 364         verify_parents $c1 $c2 &&
 365         if grep "^ file |  *2 +-$" diffstat.txt
 366         then
 367                 echo "[OOPS] diffstat was generated"
 368                 false
 369         fi
 370 '
 371
 372 test_debug 'git log --graph --decorate --oneline --all'
 373
 374 test_expect_success 'merge c1 with c2 (override --no-commit)' '
 375         git reset --hard c1 &&
 376         git config branch.master.mergeoptions "--no-commit" &&
 377         test_tick &&
 378         git merge --commit c2 &&
 379         verify_merge file result.1-5 msg.1-5 &&
 380         verify_parents $c1 $c2
 381 '
 382
 383 test_debug 'git log --graph --decorate --oneline --all'
 384
 385 test_expect_success 'merge c1 with c2 (override --squash)' '
 386         git reset --hard c1 &&
 387         git config branch.master.mergeoptions "--squash" &&
 388         test_tick &&
 389         git merge --no-squash c2 &&
 390         verify_merge file result.1-5 msg.1-5 &&
 391         verify_parents $c1 $c2
 392 '
 393
 394 test_debug 'git log --graph --decorate --oneline --all'
 395
 396 test_expect_success 'merge c0 with c1 (no-ff)' '
 397         git reset --hard c0 &&
 398         git config branch.master.mergeoptions "" &&
 399         test_tick &&
 400         git merge --no-ff c1 &&
 401         verify_merge file result.1 &&
 402         verify_parents $c0 $c1
 403 '
 404
 405 test_debug 'git log --graph --decorate --oneline --all'
 406
 407 test_expect_success 'combining --squash and --no-ff is refused' '
 408         test_must_fail git merge --squash --no-ff c1 &&
 409         test_must_fail git merge --no-ff --squash c1
 410 '
 411
 412 test_expect_success 'combining --ff-only and --no-ff is refused' '
 413         test_must_fail git merge --ff-only --no-ff c1 &&
 414         test_must_fail git merge --no-ff --ff-only c1
 415 '
 416
 417 test_expect_success 'merge c0 with c1 (ff overrides no-ff)' '
 418         git reset --hard c0 &&
 419         git config branch.master.mergeoptions "--no-ff" &&
 420         git merge --ff c1 &&
 421         verify_merge file result.1 &&
 422         verify_head $c1
 423 '
 424
 425 test_expect_success 'merge log message' '
 426         git reset --hard c0 &&
 427         git merge --no-log c2 &&
 428         git show -s --pretty=format:%b HEAD >msg.act &&
 429         test_cmp msg.nolog msg.act &&
 430
 431         git merge --log c3 &&
 432         git show -s --pretty=format:%b HEAD >msg.act &&
 433         test_cmp msg.log msg.act &&
 434
 435         git reset --hard HEAD^ &&
 436         git config merge.log yes &&
 437         git merge c3 &&
 438         git show -s --pretty=format:%b HEAD >msg.act &&
 439         test_cmp msg.log msg.act
 440 '
 441
 442 test_debug 'git log --graph --decorate --oneline --all'
 443
 444 test_expect_success 'merge c1 with c0, c2, c0, and c1' '
 445        git reset --hard c1 &&
 446        git config branch.master.mergeoptions "" &&
 447        test_tick &&
 448        git merge c0 c2 c0 c1 &&
 449        verify_merge file result.1-5 &&
 450        verify_parents $c1 $c2
 451 '
 452
 453 test_debug 'git log --graph --decorate --oneline --all'
 454
 455 test_expect_success 'merge c1 with c0, c2, c0, and c1' '
 456        git reset --hard c1 &&
 457        git config branch.master.mergeoptions "" &&
 458        test_tick &&
 459        git merge c0 c2 c0 c1 &&
 460        verify_merge file result.1-5 &&
 461        verify_parents $c1 $c2
 462 '
 463
 464 test_debug 'git log --graph --decorate --oneline --all'
 465
 466 test_expect_success 'merge c1 with c1 and c2' '
 467        git reset --hard c1 &&
 468        git config branch.master.mergeoptions "" &&
 469        test_tick &&
 470        git merge c1 c2 &&
 471        verify_merge file result.1-5 &&
 472        verify_parents $c1 $c2
 473 '
 474
 475 test_debug 'git log --graph --decorate --oneline --all'
 476
 477 test_expect_success 'merge fast-forward in a dirty tree' '
 478        git reset --hard c0 &&
 479        mv file file1 &&
 480        cat file1 >file &&
 481        rm -f file1 &&
 482        git merge c2
 483 '
 484
 485 test_debug 'git log --graph --decorate --oneline --all'
 486
 487 test_expect_success 'in-index merge' '
 488         git reset --hard c0 &&
 489         git merge --no-ff -s resolve c1 >out &&
 490         grep "Wonderful." out &&
 491         verify_parents $c0 $c1
 492 '
 493
 494 test_debug 'git log --graph --decorate --oneline --all'
 495
 496 test_expect_success 'refresh the index before merging' '
 497         git reset --hard c1 &&
 498         cp file file.n && mv -f file.n file &&
 499         git merge c3
 500 '
 501
 502 cat >expected.branch <<\EOF
 503 Merge branch 'c5-branch' (early part)
 504 EOF
 505 cat >expected.tag <<\EOF
 506 Merge commit 'c5~1'
 507 EOF
 508
 509 test_expect_success 'merge early part of c2' '
 510         git reset --hard c3 &&
 511         echo c4 >c4.c &&
 512         git add c4.c &&
 513         git commit -m c4 &&
 514         git tag c4 &&
 515         echo c5 >c5.c &&
 516         git add c5.c &&
 517         git commit -m c5 &&
 518         git tag c5 &&
 519         git reset --hard c3 &&
 520         echo c6 >c6.c &&
 521         git add c6.c &&
 522         git commit -m c6 &&
 523         git tag c6 &&
 524         git branch -f c5-branch c5 &&
 525         git merge c5-branch~1 &&
 526         git show -s --pretty=format:%s HEAD >actual.branch &&
 527         git reset --keep HEAD^ &&
 528         git merge c5~1 &&
 529         git show -s --pretty=format:%s HEAD >actual.tag &&
 530         test_cmp expected.branch actual.branch &&
 531         test_cmp expected.tag actual.tag
 532 '
 533
 534 test_debug 'git log --graph --decorate --oneline --all'
 535
 536 test_expect_success 'merge --no-ff --no-commit && commit' '
 537         git reset --hard c0 &&
 538         git merge --no-ff --no-commit c1 &&
 539         EDITOR=: git commit &&
 540         verify_parents $c0 $c1
 541 '
 542
 543 test_debug 'git log --graph --decorate --oneline --all'
 544
 545 test_expect_success 'amending no-ff merge commit' '
 546         EDITOR=: git commit --amend &&
 547         verify_parents $c0 $c1
 548 '
 549
 550 test_debug 'git log --graph --decorate --oneline --all'
 551
 552 test_done