t/t6022-merge-rename.sh

   1 #!/bin/sh
   2
   3 test_description='Merge-recursive merging renames'
   4 . ./test-lib.sh
   5
   6 modify () {
   7         sed -e "$1" <"$2" >"$2.x" &&
   8         mv "$2.x" "$2"
   9 }
  10
  11 test_expect_success setup \
  12 '
  13 cat >A <<\EOF &&
  14 a aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
  15 b bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
  16 c cccccccccccccccccccccccccccccccccccccccccccccccc
  17 d dddddddddddddddddddddddddddddddddddddddddddddddd
  18 e eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
  19 f ffffffffffffffffffffffffffffffffffffffffffffffff
  20 g gggggggggggggggggggggggggggggggggggggggggggggggg
  21 h hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
  22 i iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
  23 j jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj
  24 k kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk
  25 l llllllllllllllllllllllllllllllllllllllllllllllll
  26 m mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
  27 n nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
  28 o oooooooooooooooooooooooooooooooooooooooooooooooo
  29 EOF
  30
  31 cat >M <<\EOF &&
  32 A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
  33 B BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB
  34 C CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
  35 D DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
  36 E EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
  37 F FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
  38 G GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
  39 H HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
  40 I IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
  41 J JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ
  42 K KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK
  43 L LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL
  44 M MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
  45 N NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
  46 O OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
  47 EOF
  48
  49 git add A M &&
  50 git commit -m "initial has A and M" &&
  51 git branch white &&
  52 git branch red &&
  53 git branch blue &&
  54 git branch yellow &&
  55 git branch change &&
  56 git branch change+rename &&
  57
  58 sed -e "/^g /s/.*/g : master changes a line/" <A >A+ &&
  59 mv A+ A &&
  60 git commit -a -m "master updates A" &&
  61
  62 git checkout yellow &&
  63 rm -f M &&
  64 git commit -a -m "yellow removes M" &&
  65
  66 git checkout white &&
  67 sed -e "/^g /s/.*/g : white changes a line/" <A >B &&
  68 sed -e "/^G /s/.*/G : colored branch changes a line/" <M >N &&
  69 rm -f A M &&
  70 git update-index --add --remove A B M N &&
  71 git commit -m "white renames A->B, M->N" &&
  72
  73 git checkout red &&
  74 sed -e "/^g /s/.*/g : red changes a line/" <A >B &&
  75 sed -e "/^G /s/.*/G : colored branch changes a line/" <M >N &&
  76 rm -f A M &&
  77 git update-index --add --remove A B M N &&
  78 git commit -m "red renames A->B, M->N" &&
  79
  80 git checkout blue &&
  81 sed -e "/^g /s/.*/g : blue changes a line/" <A >C &&
  82 sed -e "/^G /s/.*/G : colored branch changes a line/" <M >N &&
  83 rm -f A M &&
  84 git update-index --add --remove A C M N &&
  85 git commit -m "blue renames A->C, M->N" &&
  86
  87 git checkout change &&
  88 sed -e "/^g /s/.*/g : changed line/" <A >A+ &&
  89 mv A+ A &&
  90 git commit -q -a -m "changed" &&
  91
  92 git checkout change+rename &&
  93 sed -e "/^g /s/.*/g : changed line/" <A >B &&
  94 rm A &&
  95 git update-index --add B &&
  96 git commit -q -a -m "changed and renamed" &&
  97
  98 git checkout master'
  99
 100 test_expect_success 'pull renaming branch into unrenaming one' \
 101 '
 102         git show-branch &&
 103         test_expect_code 1 git pull . white &&
 104         git ls-files -s &&
 105         git ls-files -u B >b.stages &&
 106         test_line_count = 3 b.stages &&
 107         git ls-files -s N >n.stages &&
 108         test_line_count = 1 n.stages &&
 109         sed -ne "/^g/{
 110         p
 111         q
 112         }" B | grep master &&
 113         git diff --exit-code white N
 114 '
 115
 116 test_expect_success 'pull renaming branch into another renaming one' \
 117 '
 118         rm -f B &&
 119         git reset --hard &&
 120         git checkout red &&
 121         test_expect_code 1 git pull . white &&
 122         git ls-files -u B >b.stages &&
 123         test_line_count = 3 b.stages &&
 124         git ls-files -s N >n.stages &&
 125         test_line_count = 1 n.stages &&
 126         sed -ne "/^g/{
 127         p
 128         q
 129         }" B | grep red &&
 130         git diff --exit-code white N
 131 '
 132
 133 test_expect_success 'pull unrenaming branch into renaming one' \
 134 '
 135         git reset --hard &&
 136         git show-branch &&
 137         test_expect_code 1 git pull . master &&
 138         git ls-files -u B >b.stages &&
 139         test_line_count = 3 b.stages &&
 140         git ls-files -s N >n.stages &&
 141         test_line_count = 1 n.stages &&
 142         sed -ne "/^g/{
 143         p
 144         q
 145         }" B | grep red &&
 146         git diff --exit-code white N
 147 '
 148
 149 test_expect_success 'pull conflicting renames' \
 150 '
 151         git reset --hard &&
 152         git show-branch &&
 153         test_expect_code 1 git pull . blue &&
 154         git ls-files -u A >a.stages &&
 155         test_line_count = 1 a.stages &&
 156         git ls-files -u B >b.stages &&
 157         test_line_count = 1 b.stages &&
 158         git ls-files -u C >c.stages &&
 159         test_line_count = 1 c.stages &&
 160         git ls-files -s N >n.stages &&
 161         test_line_count = 1 n.stages &&
 162         sed -ne "/^g/{
 163         p
 164         q
 165         }" B | grep red &&
 166         git diff --exit-code white N
 167 '
 168
 169 test_expect_success 'interference with untracked working tree file' '
 170         git reset --hard &&
 171         git show-branch &&
 172         echo >A this file should not matter &&
 173         test_expect_code 1 git pull . white &&
 174         test_path_is_file A
 175 '
 176
 177 test_expect_success 'interference with untracked working tree file' '
 178         git reset --hard &&
 179         git checkout white &&
 180         git show-branch &&
 181         rm -f A &&
 182         echo >A this file should not matter &&
 183         test_expect_code 1 git pull . red &&
 184         test_path_is_file A
 185 '
 186
 187 test_expect_success 'interference with untracked working tree file' '
 188         git reset --hard &&
 189         rm -f A M &&
 190         git checkout -f master &&
 191         git tag -f anchor &&
 192         git show-branch &&
 193         git pull . yellow &&
 194         test_path_is_missing M &&
 195         git reset --hard anchor
 196 '
 197
 198 test_expect_success 'updated working tree file should prevent the merge' '
 199         git reset --hard &&
 200         rm -f A M &&
 201         git checkout -f master &&
 202         git tag -f anchor &&
 203         git show-branch &&
 204         echo >>M one line addition &&
 205         cat M >M.saved &&
 206         test_expect_code 128 git pull . yellow &&
 207         test_cmp M M.saved &&
 208         rm -f M.saved
 209 '
 210
 211 test_expect_success 'updated working tree file should prevent the merge' '
 212         git reset --hard &&
 213         rm -f A M &&
 214         git checkout -f master &&
 215         git tag -f anchor &&
 216         git show-branch &&
 217         echo >>M one line addition &&
 218         cat M >M.saved &&
 219         git update-index M &&
 220         test_expect_code 128 git pull . yellow &&
 221         test_cmp M M.saved &&
 222         rm -f M.saved
 223 '
 224
 225 test_expect_success 'interference with untracked working tree file' '
 226         git reset --hard &&
 227         rm -f A M &&
 228         git checkout -f yellow &&
 229         git tag -f anchor &&
 230         git show-branch &&
 231         echo >M this file should not matter &&
 232         git pull . master &&
 233         test_path_is_file M &&
 234         ! {
 235                 git ls-files -s |
 236                 grep M
 237         } &&
 238         git reset --hard anchor
 239 '
 240
 241 test_expect_success 'merge of identical changes in a renamed file' '
 242         rm -f A M N &&
 243         git reset --hard &&
 244         git checkout change+rename &&
 245         GIT_MERGE_VERBOSITY=3 git merge change | grep "^Skipped B" &&
 246         git reset --hard HEAD^ &&
 247         git checkout change &&
 248         GIT_MERGE_VERBOSITY=3 git merge change+rename | grep "^Skipped B"
 249 '
 250
 251 test_expect_success 'setup for rename + d/f conflicts' '
 252         git reset --hard &&
 253         git checkout --orphan dir-in-way &&
 254         git rm -rf . &&
 255
 256         mkdir sub &&
 257         mkdir dir &&
 258         printf "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n" >sub/file &&
 259         echo foo >dir/file-in-the-way &&
 260         git add -A &&
 261         git commit -m "Common commmit" &&
 262
 263         echo 11 >>sub/file &&
 264         echo more >>dir/file-in-the-way &&
 265         git add -u &&
 266         git commit -m "Commit to merge, with dir in the way" &&
 267
 268         git checkout -b dir-not-in-way &&
 269         git reset --soft HEAD^ &&
 270         git rm -rf dir &&
 271         git commit -m "Commit to merge, with dir removed" -- dir sub/file &&
 272
 273         git checkout -b renamed-file-has-no-conflicts dir-in-way~1 &&
 274         git rm -rf dir &&
 275         git rm sub/file &&
 276         printf "1\n2\n3\n4\n5555\n6\n7\n8\n9\n10\n" >dir &&
 277         git add dir &&
 278         git commit -m "Independent change" &&
 279
 280         git checkout -b renamed-file-has-conflicts dir-in-way~1 &&
 281         git rm -rf dir &&
 282         git mv sub/file dir &&
 283         echo 12 >>dir &&
 284         git add dir &&
 285         git commit -m "Conflicting change"
 286 '
 287
 288 printf "1\n2\n3\n4\n5555\n6\n7\n8\n9\n10\n11\n" >expected
 289
 290 test_expect_success 'Rename+D/F conflict; renamed file merges + dir not in way' '
 291         git reset --hard &&
 292         git checkout -q renamed-file-has-no-conflicts^0 &&
 293         git merge --strategy=recursive dir-not-in-way &&
 294         git diff --quiet &&
 295         test -f dir &&
 296         test_cmp expected dir
 297 '
 298
 299 test_expect_success 'Rename+D/F conflict; renamed file merges but dir in way' '
 300         git reset --hard &&
 301         rm -rf dir~* &&
 302         git checkout -q renamed-file-has-no-conflicts^0 &&
 303         test_must_fail git merge --strategy=recursive dir-in-way >output &&
 304
 305         grep "CONFLICT (delete/modify): dir/file-in-the-way" output &&
 306         grep "Auto-merging dir" output &&
 307         grep "Adding as dir~HEAD instead" output &&
 308
 309         test 2 -eq "$(git ls-files -u | wc -l)" &&
 310         test 2 -eq "$(git ls-files -u dir/file-in-the-way | wc -l)" &&
 311
 312         test_must_fail git diff --quiet &&
 313         test_must_fail git diff --cached --quiet &&
 314
 315         test -f dir/file-in-the-way &&
 316         test -f dir~HEAD &&
 317         test_cmp expected dir~HEAD
 318 '
 319
 320 test_expect_success 'Same as previous, but merged other way' '
 321         git reset --hard &&
 322         rm -rf dir~* &&
 323         git checkout -q dir-in-way^0 &&
 324         test_must_fail git merge --strategy=recursive renamed-file-has-no-conflicts >output 2>errors &&
 325
 326         ! grep "error: refusing to lose untracked file at" errors &&
 327         grep "CONFLICT (delete/modify): dir/file-in-the-way" output &&
 328         grep "Auto-merging dir" output &&
 329         grep "Adding as dir~renamed-file-has-no-conflicts instead" output &&
 330
 331         test 2 -eq "$(git ls-files -u | wc -l)" &&
 332         test 2 -eq "$(git ls-files -u dir/file-in-the-way | wc -l)" &&
 333
 334         test_must_fail git diff --quiet &&
 335         test_must_fail git diff --cached --quiet &&
 336
 337         test -f dir/file-in-the-way &&
 338         test -f dir~renamed-file-has-no-conflicts &&
 339         test_cmp expected dir~renamed-file-has-no-conflicts
 340 '
 341
 342 cat >expected <<\EOF &&
 343 1
 344 2
 345 3
 346 4
 347 5
 348 6
 349 7
 350 8
 351 9
 352 10
 353 <<<<<<< HEAD
 354 12
 355 =======
 356 11
 357 >>>>>>> dir-not-in-way
 358 EOF
 359
 360 test_expect_success 'Rename+D/F conflict; renamed file cannot merge, dir not in way' '
 361         git reset --hard &&
 362         rm -rf dir~* &&
 363         git checkout -q renamed-file-has-conflicts^0 &&
 364         test_must_fail git merge --strategy=recursive dir-not-in-way &&
 365
 366         test 3 -eq "$(git ls-files -u | wc -l)" &&
 367         test 3 -eq "$(git ls-files -u dir | wc -l)" &&
 368
 369         test_must_fail git diff --quiet &&
 370         test_must_fail git diff --cached --quiet &&
 371
 372         test -f dir &&
 373         test_cmp expected dir
 374 '
 375
 376 test_expect_success 'Rename+D/F conflict; renamed file cannot merge and dir in the way' '
 377         modify s/dir-not-in-way/dir-in-way/ expected &&
 378
 379         git reset --hard &&
 380         rm -rf dir~* &&
 381         git checkout -q renamed-file-has-conflicts^0 &&
 382         test_must_fail git merge --strategy=recursive dir-in-way &&
 383
 384         test 5 -eq "$(git ls-files -u | wc -l)" &&
 385         test 3 -eq "$(git ls-files -u dir | grep -v file-in-the-way | wc -l)" &&
 386         test 2 -eq "$(git ls-files -u dir/file-in-the-way | wc -l)" &&
 387
 388         test_must_fail git diff --quiet &&
 389         test_must_fail git diff --cached --quiet &&
 390
 391         test -f dir/file-in-the-way &&
 392         test -f dir~HEAD &&
 393         test_cmp expected dir~HEAD
 394 '
 395
 396 cat >expected <<\EOF &&
 397 1
 398 2
 399 3
 400 4
 401 5
 402 6
 403 7
 404 8
 405 9
 406 10
 407 <<<<<<< HEAD
 408 11
 409 =======
 410 12
 411 >>>>>>> renamed-file-has-conflicts
 412 EOF
 413
 414 test_expect_success 'Same as previous, but merged other way' '
 415         git reset --hard &&
 416         rm -rf dir~* &&
 417         git checkout -q dir-in-way^0 &&
 418         test_must_fail git merge --strategy=recursive renamed-file-has-conflicts &&
 419
 420         test 5 -eq "$(git ls-files -u | wc -l)" &&
 421         test 3 -eq "$(git ls-files -u dir | grep -v file-in-the-way | wc -l)" &&
 422         test 2 -eq "$(git ls-files -u dir/file-in-the-way | wc -l)" &&
 423
 424         test_must_fail git diff --quiet &&
 425         test_must_fail git diff --cached --quiet &&
 426
 427         test -f dir/file-in-the-way &&
 428         test -f dir~renamed-file-has-conflicts &&
 429         test_cmp expected dir~renamed-file-has-conflicts
 430 '
 431
 432 test_expect_success 'setup both rename source and destination involved in D/F conflict' '
 433         git reset --hard &&
 434         git checkout --orphan rename-dest &&
 435         git rm -rf . &&
 436         git clean -fdqx &&
 437
 438         mkdir one &&
 439         echo stuff >one/file &&
 440         git add -A &&
 441         git commit -m "Common commmit" &&
 442
 443         git mv one/file destdir &&
 444         git commit -m "Renamed to destdir" &&
 445
 446         git checkout -b source-conflict HEAD~1 &&
 447         git rm -rf one &&
 448         mkdir destdir &&
 449         touch one destdir/foo &&
 450         git add -A &&
 451         git commit -m "Conflicts in the way"
 452 '
 453
 454 test_expect_success 'both rename source and destination involved in D/F conflict' '
 455         git reset --hard &&
 456         rm -rf dir~* &&
 457         git checkout -q rename-dest^0 &&
 458         test_must_fail git merge --strategy=recursive source-conflict &&
 459
 460         test 1 -eq "$(git ls-files -u | wc -l)" &&
 461
 462         test_must_fail git diff --quiet &&
 463
 464         test -f destdir/foo &&
 465         test -f one &&
 466         test -f destdir~HEAD &&
 467         test "stuff" = "$(cat destdir~HEAD)"
 468 '
 469
 470 test_expect_success 'setup pair rename to parent of other (D/F conflicts)' '
 471         git reset --hard &&
 472         git checkout --orphan rename-two &&
 473         git rm -rf . &&
 474         git clean -fdqx &&
 475
 476         mkdir one &&
 477         mkdir two &&
 478         echo stuff >one/file &&
 479         echo other >two/file &&
 480         git add -A &&
 481         git commit -m "Common commmit" &&
 482
 483         git rm -rf one &&
 484         git mv two/file one &&
 485         git commit -m "Rename two/file -> one" &&
 486
 487         git checkout -b rename-one HEAD~1 &&
 488         git rm -rf two &&
 489         git mv one/file two &&
 490         rm -r one &&
 491         git commit -m "Rename one/file -> two"
 492 '
 493
 494 test_expect_success 'pair rename to parent of other (D/F conflicts) w/ untracked dir' '
 495         git checkout -q rename-one^0 &&
 496         mkdir one &&
 497         test_must_fail git merge --strategy=recursive rename-two &&
 498
 499         test 2 -eq "$(git ls-files -u | wc -l)" &&
 500         test 1 -eq "$(git ls-files -u one | wc -l)" &&
 501         test 1 -eq "$(git ls-files -u two | wc -l)" &&
 502
 503         test_must_fail git diff --quiet &&
 504
 505         test 4 -eq $(find . | grep -v .git | wc -l) &&
 506
 507         test -d one &&
 508         test -f one~rename-two &&
 509         test -f two &&
 510         test "other" = $(cat one~rename-two) &&
 511         test "stuff" = $(cat two)
 512 '
 513
 514 test_expect_success 'pair rename to parent of other (D/F conflicts) w/ clean start' '
 515         git reset --hard &&
 516         git clean -fdqx &&
 517         test_must_fail git merge --strategy=recursive rename-two &&
 518
 519         test 2 -eq "$(git ls-files -u | wc -l)" &&
 520         test 1 -eq "$(git ls-files -u one | wc -l)" &&
 521         test 1 -eq "$(git ls-files -u two | wc -l)" &&
 522
 523         test_must_fail git diff --quiet &&
 524
 525         test 3 -eq $(find . | grep -v .git | wc -l) &&
 526
 527         test -f one &&
 528         test -f two &&
 529         test "other" = $(cat one) &&
 530         test "stuff" = $(cat two)
 531 '
 532
 533 test_expect_success 'setup rename of one file to two, with directories in the way' '
 534         git reset --hard &&
 535         git checkout --orphan first-rename &&
 536         git rm -rf . &&
 537         git clean -fdqx &&
 538
 539         echo stuff >original &&
 540         git add -A &&
 541         git commit -m "Common commmit" &&
 542
 543         mkdir two &&
 544         >two/file &&
 545         git add two/file &&
 546         git mv original one &&
 547         git commit -m "Put two/file in the way, rename to one" &&
 548
 549         git checkout -b second-rename HEAD~1 &&
 550         mkdir one &&
 551         >one/file &&
 552         git add one/file &&
 553         git mv original two &&
 554         git commit -m "Put one/file in the way, rename to two"
 555 '
 556
 557 test_expect_success 'check handling of differently renamed file with D/F conflicts' '
 558         git checkout -q first-rename^0 &&
 559         test_must_fail git merge --strategy=recursive second-rename &&
 560
 561         test 5 -eq "$(git ls-files -s | wc -l)" &&
 562         test 3 -eq "$(git ls-files -u | wc -l)" &&
 563         test 1 -eq "$(git ls-files -u one | wc -l)" &&
 564         test 1 -eq "$(git ls-files -u two | wc -l)" &&
 565         test 1 -eq "$(git ls-files -u original | wc -l)" &&
 566         test 2 -eq "$(git ls-files -o | wc -l)" &&
 567
 568         test -f one/file &&
 569         test -f two/file &&
 570         test -f one~HEAD &&
 571         test -f two~second-rename &&
 572         ! test -f original
 573 '
 574
 575 test_expect_success 'setup rename one file to two; directories moving out of the way' '
 576         git reset --hard &&
 577         git checkout --orphan first-rename-redo &&
 578         git rm -rf . &&
 579         git clean -fdqx &&
 580
 581         echo stuff >original &&
 582         mkdir one two &&
 583         touch one/file two/file &&
 584         git add -A &&
 585         git commit -m "Common commmit" &&
 586
 587         git rm -rf one &&
 588         git mv original one &&
 589         git commit -m "Rename to one" &&
 590
 591         git checkout -b second-rename-redo HEAD~1 &&
 592         git rm -rf two &&
 593         git mv original two &&
 594         git commit -m "Rename to two"
 595 '
 596
 597 test_expect_success 'check handling of differently renamed file with D/F conflicts' '
 598         git checkout -q first-rename-redo^0 &&
 599         test_must_fail git merge --strategy=recursive second-rename-redo &&
 600
 601         test 3 -eq "$(git ls-files -u | wc -l)" &&
 602         test 1 -eq "$(git ls-files -u one | wc -l)" &&
 603         test 1 -eq "$(git ls-files -u two | wc -l)" &&
 604         test 1 -eq "$(git ls-files -u original | wc -l)" &&
 605         test 0 -eq "$(git ls-files -o | wc -l)" &&
 606
 607         test -f one &&
 608         test -f two &&
 609         ! test -f original
 610 '
 611
 612 test_expect_success 'setup avoid unnecessary update, normal rename' '
 613         git reset --hard &&
 614         git checkout --orphan avoid-unnecessary-update-1 &&
 615         git rm -rf . &&
 616         git clean -fdqx &&
 617
 618         printf "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n" >original &&
 619         git add -A &&
 620         git commit -m "Common commmit" &&
 621
 622         git mv original rename &&
 623         echo 11 >>rename &&
 624         git add -u &&
 625         git commit -m "Renamed and modified" &&
 626
 627         git checkout -b merge-branch-1 HEAD~1 &&
 628         echo "random content" >random-file &&
 629         git add -A &&
 630         git commit -m "Random, unrelated changes"
 631 '
 632
 633 test_expect_success 'avoid unnecessary update, normal rename' '
 634         git checkout -q avoid-unnecessary-update-1^0 &&
 635         test-chmtime =1000000000 rename &&
 636         test-chmtime -v +0 rename >expect &&
 637         git merge merge-branch-1 &&
 638         test-chmtime -v +0 rename >actual &&
 639         test_cmp expect actual # "rename" should have stayed intact
 640 '
 641
 642 test_expect_success 'setup to test avoiding unnecessary update, with D/F conflict' '
 643         git reset --hard &&
 644         git checkout --orphan avoid-unnecessary-update-2 &&
 645         git rm -rf . &&
 646         git clean -fdqx &&
 647
 648         mkdir df &&
 649         printf "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n" >df/file &&
 650         git add -A &&
 651         git commit -m "Common commmit" &&
 652
 653         git mv df/file temp &&
 654         rm -rf df &&
 655         git mv temp df &&
 656         echo 11 >>df &&
 657         git add -u &&
 658         git commit -m "Renamed and modified" &&
 659
 660         git checkout -b merge-branch-2 HEAD~1 &&
 661         >unrelated-change &&
 662         git add unrelated-change &&
 663         git commit -m "Only unrelated changes"
 664 '
 665
 666 test_expect_failure 'avoid unnecessary update, with D/F conflict' '
 667         git checkout -q avoid-unnecessary-update-2^0 &&
 668         test-chmtime =1000000000 df &&
 669         test-chmtime -v +0 df >expect &&
 670         git merge merge-branch-2 &&
 671         test-chmtime -v +0 df >actual &&
 672         test_cmp expect actual # "df" should have stayed intact
 673 '
 674
 675 test_done