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 . ./test-lib.sh
  11
  12 cat >file <<EOF
  13 1
  14 2
  15 3
  16 4
  17 5
  18 6
  19 7
  20 8
  21 9
  22 EOF
  23
  24 cat >file.1 <<EOF
  25 1 X
  26 2
  27 3
  28 4
  29 5
  30 6
  31 7
  32 8
  33 9
  34 EOF
  35
  36 cat >file.5 <<EOF
  37 1
  38 2
  39 3
  40 4
  41 5 X
  42 6
  43 7
  44 8
  45 9
  46 EOF
  47
  48 cat >file.9 <<EOF
  49 1
  50 2
  51 3
  52 4
  53 5
  54 6
  55 7
  56 8
  57 9 X
  58 EOF
  59
  60 cat  >result.1 <<EOF
  61 1 X
  62 2
  63 3
  64 4
  65 5
  66 6
  67 7
  68 8
  69 9
  70 EOF
  71
  72 cat >result.1-5 <<EOF
  73 1 X
  74 2
  75 3
  76 4
  77 5 X
  78 6
  79 7
  80 8
  81 9
  82 EOF
  83
  84 cat >result.1-5-9 <<EOF
  85 1 X
  86 2
  87 3
  88 4
  89 5 X
  90 6
  91 7
  92 8
  93 9 X
  94 EOF
  95
  96 create_merge_msgs() {
  97         echo "Merge commit 'c2'" >msg.1-5 &&
  98         echo "Merge commit 'c2'; commit 'c3'" >msg.1-5-9 &&
  99         echo "Squashed commit of the following:" >squash.1 &&
 100         echo >>squash.1 &&
 101         git log --no-merges ^HEAD c1 >>squash.1 &&
 102         echo "Squashed commit of the following:" >squash.1-5 &&
 103         echo >>squash.1-5 &&
 104         git log --no-merges ^HEAD c2 >>squash.1-5 &&
 105         echo "Squashed commit of the following:" >squash.1-5-9 &&
 106         echo >>squash.1-5-9 &&
 107         git log --no-merges ^HEAD c2 c3 >>squash.1-5-9 &&
 108         echo > msg.nolog &&
 109         echo "* commit 'c3':" >msg.log &&
 110         echo "  commit 3" >>msg.log &&
 111         echo >>msg.log
 112 }
 113
 114 verify_diff() {
 115         if ! test_cmp "$1" "$2"
 116         then
 117                 echo "$3"
 118                 false
 119         fi
 120 }
 121
 122 verify_merge() {
 123         verify_diff "$2" "$1" "[OOPS] bad merge result" &&
 124         if test $(git ls-files -u | wc -l) -gt 0
 125         then
 126                 echo "[OOPS] unmerged files"
 127                 false
 128         fi &&
 129         if test_must_fail git diff --exit-code
 130         then
 131                 echo "[OOPS] working tree != index"
 132                 false
 133         fi &&
 134         if test -n "$3"
 135         then
 136                 git show -s --pretty=format:%s HEAD >msg.act &&
 137                 verify_diff "$3" msg.act "[OOPS] bad merge message"
 138         fi
 139 }
 140
 141 verify_head() {
 142         if test "$1" != "$(git rev-parse HEAD)"
 143         then
 144                 echo "[OOPS] HEAD != $1"
 145                 false
 146         fi
 147 }
 148
 149 verify_parents() {
 150         i=1
 151         while test $# -gt 0
 152         do
 153                 if test "$1" != "$(git rev-parse HEAD^$i)"
 154                 then
 155                         echo "[OOPS] HEAD^$i != $1"
 156                         return 1
 157                 fi
 158                 i=$(expr $i + 1)
 159                 shift
 160         done
 161 }
 162
 163 verify_mergeheads() {
 164         i=1
 165         if ! test -f .git/MERGE_HEAD
 166         then
 167                 echo "[OOPS] MERGE_HEAD is missing"
 168                 false
 169         fi &&
 170         while test $# -gt 0
 171         do
 172                 head=$(head -n $i .git/MERGE_HEAD | sed -ne \$p)
 173                 if test "$1" != "$head"
 174                 then
 175                         echo "[OOPS] MERGE_HEAD $i != $1"
 176                         return 1
 177                 fi
 178                 i=$(expr $i + 1)
 179                 shift
 180         done
 181 }
 182
 183 verify_no_mergehead() {
 184         if test -f .git/MERGE_HEAD
 185         then
 186                 echo "[OOPS] MERGE_HEAD exists"
 187                 false
 188         fi
 189 }
 190
 191
 192 test_expect_success 'setup' '
 193         git add file &&
 194         test_tick &&
 195         git commit -m "commit 0" &&
 196         git tag c0 &&
 197         c0=$(git rev-parse HEAD) &&
 198         cp file.1 file &&
 199         git add file &&
 200         test_tick &&
 201         git commit -m "commit 1" &&
 202         git tag c1 &&
 203         c1=$(git rev-parse HEAD) &&
 204         git reset --hard "$c0" &&
 205         cp file.5 file &&
 206         git add file &&
 207         test_tick &&
 208         git commit -m "commit 2" &&
 209         git tag c2 &&
 210         c2=$(git rev-parse HEAD) &&
 211         git reset --hard "$c0" &&
 212         cp file.9 file &&
 213         git add file &&
 214         test_tick &&
 215         git commit -m "commit 3" &&
 216         git tag c3 &&
 217         c3=$(git rev-parse HEAD)
 218         git reset --hard "$c0" &&
 219         create_merge_msgs
 220 '
 221
 222 test_debug 'gitk --all'
 223
 224 test_expect_success 'test option parsing' '
 225         test_must_fail git merge -$ c1 &&
 226         test_must_fail git merge --no-such c1 &&
 227         test_must_fail git merge -s foobar c1 &&
 228         test_must_fail git merge -s=foobar c1 &&
 229         test_must_fail git merge -m &&
 230         test_must_fail git merge
 231 '
 232
 233 test_expect_success 'reject non-strategy with a git-merge-foo name' '
 234         test_must_fail git merge -s index c1
 235 '
 236
 237 test_expect_success 'merge c0 with c1' '
 238         git reset --hard c0 &&
 239         git merge c1 &&
 240         verify_merge file result.1 &&
 241         verify_head "$c1"
 242 '
 243
 244 test_debug 'gitk --all'
 245
 246 test_expect_success 'merge c1 with c2' '
 247         git reset --hard c1 &&
 248         test_tick &&
 249         git merge c2 &&
 250         verify_merge file result.1-5 msg.1-5 &&
 251         verify_parents $c1 $c2
 252 '
 253
 254 test_debug 'gitk --all'
 255
 256 test_expect_success 'merge c1 with c2 and c3' '
 257         git reset --hard c1 &&
 258         test_tick &&
 259         git merge c2 c3 &&
 260         verify_merge file result.1-5-9 msg.1-5-9 &&
 261         verify_parents $c1 $c2 $c3
 262 '
 263
 264 test_debug 'gitk --all'
 265
 266 test_expect_success 'merge c0 with c1 (no-commit)' '
 267         git reset --hard c0 &&
 268         git merge --no-commit c1 &&
 269         verify_merge file result.1 &&
 270         verify_head $c1
 271 '
 272
 273 test_debug 'gitk --all'
 274
 275 test_expect_success 'merge c1 with c2 (no-commit)' '
 276         git reset --hard c1 &&
 277         git merge --no-commit c2 &&
 278         verify_merge file result.1-5 &&
 279         verify_head $c1 &&
 280         verify_mergeheads $c2
 281 '
 282
 283 test_debug 'gitk --all'
 284
 285 test_expect_success 'merge c1 with c2 and c3 (no-commit)' '
 286         git reset --hard c1 &&
 287         git merge --no-commit c2 c3 &&
 288         verify_merge file result.1-5-9 &&
 289         verify_head $c1 &&
 290         verify_mergeheads $c2 $c3
 291 '
 292
 293 test_debug 'gitk --all'
 294
 295 test_expect_success 'merge c0 with c1 (squash)' '
 296         git reset --hard c0 &&
 297         git merge --squash c1 &&
 298         verify_merge file result.1 &&
 299         verify_head $c0 &&
 300         verify_no_mergehead &&
 301         verify_diff squash.1 .git/SQUASH_MSG "[OOPS] bad squash message"
 302 '
 303
 304 test_debug 'gitk --all'
 305
 306 test_expect_success 'merge c1 with c2 (squash)' '
 307         git reset --hard c1 &&
 308         git merge --squash c2 &&
 309         verify_merge file result.1-5 &&
 310         verify_head $c1 &&
 311         verify_no_mergehead &&
 312         verify_diff squash.1-5 .git/SQUASH_MSG "[OOPS] bad squash message"
 313 '
 314
 315 test_debug 'gitk --all'
 316
 317 test_expect_success 'merge c1 with c2 and c3 (squash)' '
 318         git reset --hard c1 &&
 319         git merge --squash c2 c3 &&
 320         verify_merge file result.1-5-9 &&
 321         verify_head $c1 &&
 322         verify_no_mergehead &&
 323         verify_diff squash.1-5-9 .git/SQUASH_MSG "[OOPS] bad squash message"
 324 '
 325
 326 test_debug 'gitk --all'
 327
 328 test_expect_success 'merge c1 with c2 (no-commit in config)' '
 329         git reset --hard c1 &&
 330         git config branch.master.mergeoptions "--no-commit" &&
 331         git merge c2 &&
 332         verify_merge file result.1-5 &&
 333         verify_head $c1 &&
 334         verify_mergeheads $c2
 335 '
 336
 337 test_debug 'gitk --all'
 338
 339 test_expect_success 'merge c1 with c2 (squash in config)' '
 340         git reset --hard c1 &&
 341         git config branch.master.mergeoptions "--squash" &&
 342         git merge c2 &&
 343         verify_merge file result.1-5 &&
 344         verify_head $c1 &&
 345         verify_no_mergehead &&
 346         verify_diff squash.1-5 .git/SQUASH_MSG "[OOPS] bad squash message"
 347 '
 348
 349 test_debug 'gitk --all'
 350
 351 test_expect_success 'override config option -n with --summary' '
 352         git reset --hard c1 &&
 353         git config branch.master.mergeoptions "-n" &&
 354         test_tick &&
 355         git merge --summary c2 >diffstat.txt &&
 356         verify_merge file result.1-5 msg.1-5 &&
 357         verify_parents $c1 $c2 &&
 358         if ! grep "^ file |  *2 +-$" diffstat.txt
 359         then
 360                 echo "[OOPS] diffstat was not generated with --summary"
 361                 false
 362         fi
 363 '
 364
 365 test_expect_success 'override config option -n with --stat' '
 366         git reset --hard c1 &&
 367         git config branch.master.mergeoptions "-n" &&
 368         test_tick &&
 369         git merge --stat c2 >diffstat.txt &&
 370         verify_merge file result.1-5 msg.1-5 &&
 371         verify_parents $c1 $c2 &&
 372         if ! grep "^ file |  *2 +-$" diffstat.txt
 373         then
 374                 echo "[OOPS] diffstat was not generated with --stat"
 375                 false
 376         fi
 377 '
 378
 379 test_debug 'gitk --all'
 380
 381 test_expect_success 'override config option --stat' '
 382         git reset --hard c1 &&
 383         git config branch.master.mergeoptions "--stat" &&
 384         test_tick &&
 385         git merge -n c2 >diffstat.txt &&
 386         verify_merge file result.1-5 msg.1-5 &&
 387         verify_parents $c1 $c2 &&
 388         if grep "^ file |  *2 +-$" diffstat.txt
 389         then
 390                 echo "[OOPS] diffstat was generated"
 391                 false
 392         fi
 393 '
 394
 395 test_debug 'gitk --all'
 396
 397 test_expect_success 'merge c1 with c2 (override --no-commit)' '
 398         git reset --hard c1 &&
 399         git config branch.master.mergeoptions "--no-commit" &&
 400         test_tick &&
 401         git merge --commit c2 &&
 402         verify_merge file result.1-5 msg.1-5 &&
 403         verify_parents $c1 $c2
 404 '
 405
 406 test_debug 'gitk --all'
 407
 408 test_expect_success 'merge c1 with c2 (override --squash)' '
 409         git reset --hard c1 &&
 410         git config branch.master.mergeoptions "--squash" &&
 411         test_tick &&
 412         git merge --no-squash c2 &&
 413         verify_merge file result.1-5 msg.1-5 &&
 414         verify_parents $c1 $c2
 415 '
 416
 417 test_debug 'gitk --all'
 418
 419 test_expect_success 'merge c0 with c1 (no-ff)' '
 420         git reset --hard c0 &&
 421         git config branch.master.mergeoptions "" &&
 422         test_tick &&
 423         git merge --no-ff c1 &&
 424         verify_merge file result.1 &&
 425         verify_parents $c0 $c1
 426 '
 427
 428 test_debug 'gitk --all'
 429
 430 test_expect_success 'combining --squash and --no-ff is refused' '
 431         test_must_fail git merge --squash --no-ff c1 &&
 432         test_must_fail git merge --no-ff --squash c1
 433 '
 434
 435 test_expect_success 'merge c0 with c1 (ff overrides no-ff)' '
 436         git reset --hard c0 &&
 437         git config branch.master.mergeoptions "--no-ff" &&
 438         git merge --ff c1 &&
 439         verify_merge file result.1 &&
 440         verify_head $c1
 441 '
 442
 443 test_expect_success 'merge log message' '
 444         git reset --hard c0 &&
 445         git merge --no-log c2 &&
 446         git show -s --pretty=format:%b HEAD >msg.act &&
 447         verify_diff msg.nolog msg.act "[OOPS] bad merge log message" &&
 448
 449         git merge --log c3 &&
 450         git show -s --pretty=format:%b HEAD >msg.act &&
 451         verify_diff msg.log msg.act "[OOPS] bad merge log message" &&
 452
 453         git reset --hard HEAD^ &&
 454         git config merge.log yes &&
 455         git merge c3 &&
 456         git show -s --pretty=format:%b HEAD >msg.act &&
 457         verify_diff msg.log msg.act "[OOPS] bad merge log message"
 458 '
 459
 460 test_debug 'gitk --all'
 461
 462 test_expect_success 'merge c1 with c0, c2, c0, and c1' '
 463        git reset --hard c1 &&
 464        git config branch.master.mergeoptions "" &&
 465        test_tick &&
 466        git merge c0 c2 c0 c1 &&
 467        verify_merge file result.1-5 &&
 468        verify_parents $c1 $c2
 469 '
 470
 471 test_debug 'gitk --all'
 472
 473 test_expect_success 'merge c1 with c0, c2, c0, and c1' '
 474        git reset --hard c1 &&
 475        git config branch.master.mergeoptions "" &&
 476        test_tick &&
 477        git merge c0 c2 c0 c1 &&
 478        verify_merge file result.1-5 &&
 479        verify_parents $c1 $c2
 480 '
 481
 482 test_debug 'gitk --all'
 483
 484 test_expect_success 'merge c1 with c1 and c2' '
 485        git reset --hard c1 &&
 486        git config branch.master.mergeoptions "" &&
 487        test_tick &&
 488        git merge c1 c2 &&
 489        verify_merge file result.1-5 &&
 490        verify_parents $c1 $c2
 491 '
 492
 493 test_debug 'gitk --all'
 494
 495 test_expect_success 'merge fast-forward in a dirty tree' '
 496        git reset --hard c0 &&
 497        mv file file1 &&
 498        cat file1 >file &&
 499        rm -f file1 &&
 500        git merge c2
 501 '
 502
 503 test_debug 'gitk --all'
 504
 505 test_expect_success 'in-index merge' '
 506         git reset --hard c0 &&
 507         git merge --no-ff -s resolve c1 > out &&
 508         grep "Wonderful." out &&
 509         verify_parents $c0 $c1
 510 '
 511
 512 test_debug 'gitk --all'
 513
 514 test_expect_success 'refresh the index before merging' '
 515         git reset --hard c1 &&
 516         sleep 1 &&
 517         touch file &&
 518         git merge c3
 519 '
 520
 521 test_debug 'gitk --all'
 522
 523 test_done