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         cat >A <<-\EOF &&
  13         a aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
  14         b bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
  15         c cccccccccccccccccccccccccccccccccccccccccccccccc
  16         d dddddddddddddddddddddddddddddddddddddddddddddddd
  17         e eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
  18         f ffffffffffffffffffffffffffffffffffffffffffffffff
  19         g gggggggggggggggggggggggggggggggggggggggggggggggg
  20         h hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
  21         i iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
  22         j jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj
  23         k kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk
  24         l llllllllllllllllllllllllllllllllllllllllllllllll
  25         m mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
  26         n nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
  27         o oooooooooooooooooooooooooooooooooooooooooooooooo
  28         EOF
  29
  30         cat >M <<-\EOF &&
  31         A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
  32         B BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB
  33         C CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
  34         D DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
  35         E EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
  36         F FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
  37         G GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
  38         H HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
  39         I IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
  40         J JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ
  41         K KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK
  42         L LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL
  43         M MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
  44         N NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
  45         O OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
  46         EOF
  47
  48         git add A M &&
  49         git commit -m "initial has A and M" &&
  50         git branch white &&
  51         git branch red &&
  52         git branch blue &&
  53         git branch yellow &&
  54         git branch change &&
  55         git branch change+rename &&
  56
  57         sed -e "/^g /s/.*/g : master changes a line/" <A >A+ &&
  58         mv A+ A &&
  59         git commit -a -m "master updates A" &&
  60
  61         git checkout yellow &&
  62         rm -f M &&
  63         git commit -a -m "yellow removes M" &&
  64
  65         git checkout white &&
  66         sed -e "/^g /s/.*/g : white changes a line/" <A >B &&
  67         sed -e "/^G /s/.*/G : colored branch changes a line/" <M >N &&
  68         rm -f A M &&
  69         git update-index --add --remove A B M N &&
  70         git commit -m "white renames A->B, M->N" &&
  71
  72         git checkout red &&
  73         sed -e "/^g /s/.*/g : red changes a line/" <A >B &&
  74         sed -e "/^G /s/.*/G : colored branch changes a line/" <M >N &&
  75         rm -f A M &&
  76         git update-index --add --remove A B M N &&
  77         git commit -m "red renames A->B, M->N" &&
  78
  79         git checkout blue &&
  80         sed -e "/^g /s/.*/g : blue changes a line/" <A >C &&
  81         sed -e "/^G /s/.*/G : colored branch changes a line/" <M >N &&
  82         rm -f A M &&
  83         git update-index --add --remove A C M N &&
  84         git commit -m "blue renames A->C, M->N" &&
  85
  86         git checkout change &&
  87         sed -e "/^g /s/.*/g : changed line/" <A >A+ &&
  88         mv A+ A &&
  89         git commit -q -a -m "changed" &&
  90
  91         git checkout change+rename &&
  92         sed -e "/^g /s/.*/g : changed line/" <A >B &&
  93         rm A &&
  94         git update-index --add B &&
  95         git commit -q -a -m "changed and renamed" &&
  96
  97         git checkout master
  98 '
  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
 246         test-tool chmtime --get -3600 B >old-mtime &&
 247         GIT_MERGE_VERBOSITY=3 git merge change >out &&
 248
 249         test-tool chmtime --get B >new-mtime &&
 250         test_cmp old-mtime new-mtime &&
 251
 252         git reset --hard HEAD^ &&
 253         git checkout change &&
 254
 255         # A will be renamed to B; we check mtimes and file presence
 256         test_path_is_missing B &&
 257         test-tool chmtime --get -3600 A >old-mtime &&
 258         GIT_MERGE_VERBOSITY=3 git merge change+rename >out &&
 259
 260         test_path_is_missing A &&
 261         test-tool chmtime --get B >new-mtime &&
 262         test $(cat old-mtime) -lt $(cat new-mtime)
 263 '
 264
 265 test_expect_success 'setup for rename + d/f conflicts' '
 266         git reset --hard &&
 267         git checkout --orphan dir-in-way &&
 268         git rm -rf . &&
 269         git clean -fdqx &&
 270
 271         mkdir sub &&
 272         mkdir dir &&
 273         printf "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n" >sub/file &&
 274         echo foo >dir/file-in-the-way &&
 275         git add -A &&
 276         git commit -m "Common commit" &&
 277
 278         echo 11 >>sub/file &&
 279         echo more >>dir/file-in-the-way &&
 280         git add -u &&
 281         git commit -m "Commit to merge, with dir in the way" &&
 282
 283         git checkout -b dir-not-in-way &&
 284         git reset --soft HEAD^ &&
 285         git rm -rf dir &&
 286         git commit -m "Commit to merge, with dir removed" -- dir sub/file &&
 287
 288         git checkout -b renamed-file-has-no-conflicts dir-in-way~1 &&
 289         git rm -rf dir &&
 290         git rm sub/file &&
 291         printf "1\n2\n3\n4\n5555\n6\n7\n8\n9\n10\n" >dir &&
 292         git add dir &&
 293         git commit -m "Independent change" &&
 294
 295         git checkout -b renamed-file-has-conflicts dir-in-way~1 &&
 296         git rm -rf dir &&
 297         git mv sub/file dir &&
 298         echo 12 >>dir &&
 299         git add dir &&
 300         git commit -m "Conflicting change"
 301 '
 302
 303 test_expect_success 'Rename+D/F conflict; renamed file merges + dir not in way' '
 304         git reset --hard &&
 305         git checkout -q renamed-file-has-no-conflicts^0 &&
 306
 307         git merge --strategy=recursive dir-not-in-way &&
 308
 309         git diff --quiet &&
 310         test_path_is_file dir &&
 311         test_write_lines 1 2 3 4 5555 6 7 8 9 10 11 >expected &&
 312         test_cmp expected dir
 313 '
 314
 315 test_expect_success 'Rename+D/F conflict; renamed file merges but dir in way' '
 316         git reset --hard &&
 317         rm -rf dir~* &&
 318         git checkout -q renamed-file-has-no-conflicts^0 &&
 319         test_must_fail git merge --strategy=recursive dir-in-way >output &&
 320
 321         test_i18ngrep "CONFLICT (modify/delete): dir/file-in-the-way" output &&
 322         test_i18ngrep "Auto-merging dir" output &&
 323         test_i18ngrep "Adding as dir~HEAD instead" output &&
 324
 325         test 3 -eq "$(git ls-files -u | wc -l)" &&
 326         test 2 -eq "$(git ls-files -u dir/file-in-the-way | wc -l)" &&
 327
 328         test_must_fail git diff --quiet &&
 329         test_must_fail git diff --cached --quiet &&
 330
 331         test_path_is_file dir/file-in-the-way &&
 332         test_path_is_file dir~HEAD &&
 333         test_cmp expected dir~HEAD
 334 '
 335
 336 test_expect_success 'Same as previous, but merged other way' '
 337         git reset --hard &&
 338         rm -rf dir~* &&
 339         git checkout -q dir-in-way^0 &&
 340         test_must_fail git merge --strategy=recursive renamed-file-has-no-conflicts >output 2>errors &&
 341
 342         ! grep "error: refusing to lose untracked file at" errors &&
 343         test_i18ngrep "CONFLICT (modify/delete): dir/file-in-the-way" output &&
 344         test_i18ngrep "Auto-merging dir" output &&
 345         test_i18ngrep "Adding as dir~renamed-file-has-no-conflicts instead" output &&
 346
 347         test 3 -eq "$(git ls-files -u | wc -l)" &&
 348         test 2 -eq "$(git ls-files -u dir/file-in-the-way | wc -l)" &&
 349
 350         test_must_fail git diff --quiet &&
 351         test_must_fail git diff --cached --quiet &&
 352
 353         test_path_is_file dir/file-in-the-way &&
 354         test_path_is_file dir~renamed-file-has-no-conflicts &&
 355         test_cmp expected dir~renamed-file-has-no-conflicts
 356 '
 357
 358 test_expect_success 'Rename+D/F conflict; renamed file cannot merge, dir not in way' '
 359         git reset --hard &&
 360         rm -rf dir~* &&
 361         git checkout -q renamed-file-has-conflicts^0 &&
 362         test_must_fail git merge --strategy=recursive dir-not-in-way &&
 363
 364         test 3 -eq "$(git ls-files -u | wc -l)" &&
 365         test 3 -eq "$(git ls-files -u dir | wc -l)" &&
 366
 367         test_must_fail git diff --quiet &&
 368         test_must_fail git diff --cached --quiet &&
 369
 370         test_path_is_file dir &&
 371         cat >expected <<-\EOF &&
 372         1
 373         2
 374         3
 375         4
 376         5
 377         6
 378         7
 379         8
 380         9
 381         10
 382         <<<<<<< HEAD:dir
 383         12
 384         =======
 385         11
 386         >>>>>>> dir-not-in-way:sub/file
 387         EOF
 388         test_cmp expected dir
 389 '
 390
 391 test_expect_success 'Rename+D/F conflict; renamed file cannot merge and dir in the way' '
 392         modify s/dir-not-in-way/dir-in-way/ expected &&
 393
 394         git reset --hard &&
 395         rm -rf dir~* &&
 396         git checkout -q renamed-file-has-conflicts^0 &&
 397         test_must_fail git merge --strategy=recursive dir-in-way &&
 398
 399         test 5 -eq "$(git ls-files -u | wc -l)" &&
 400         test 3 -eq "$(git ls-files -u dir | grep -v file-in-the-way | wc -l)" &&
 401         test 2 -eq "$(git ls-files -u dir/file-in-the-way | wc -l)" &&
 402
 403         test_must_fail git diff --quiet &&
 404         test_must_fail git diff --cached --quiet &&
 405
 406         test_path_is_file dir/file-in-the-way &&
 407         test_path_is_file dir~HEAD &&
 408         test_cmp expected dir~HEAD
 409 '
 410
 411 test_expect_success 'Same as previous, but merged other way' '
 412         git reset --hard &&
 413         rm -rf dir~* &&
 414         git checkout -q dir-in-way^0 &&
 415         test_must_fail git merge --strategy=recursive renamed-file-has-conflicts &&
 416
 417         test 5 -eq "$(git ls-files -u | wc -l)" &&
 418         test 3 -eq "$(git ls-files -u dir | grep -v file-in-the-way | wc -l)" &&
 419         test 2 -eq "$(git ls-files -u dir/file-in-the-way | wc -l)" &&
 420
 421         test_must_fail git diff --quiet &&
 422         test_must_fail git diff --cached --quiet &&
 423
 424         test_path_is_file dir/file-in-the-way &&
 425         test_path_is_file dir~renamed-file-has-conflicts &&
 426         cat >expected <<-\EOF &&
 427         1
 428         2
 429         3
 430         4
 431         5
 432         6
 433         7
 434         8
 435         9
 436         10
 437         <<<<<<< HEAD:sub/file
 438         11
 439         =======
 440         12
 441         >>>>>>> renamed-file-has-conflicts:dir
 442         EOF
 443         test_cmp expected dir~renamed-file-has-conflicts
 444 '
 445
 446 test_expect_success 'setup both rename source and destination involved in D/F conflict' '
 447         git reset --hard &&
 448         git checkout --orphan rename-dest &&
 449         git rm -rf . &&
 450         git clean -fdqx &&
 451
 452         mkdir one &&
 453         echo stuff >one/file &&
 454         git add -A &&
 455         git commit -m "Common commit" &&
 456
 457         git mv one/file destdir &&
 458         git commit -m "Renamed to destdir" &&
 459
 460         git checkout -b source-conflict HEAD~1 &&
 461         git rm -rf one &&
 462         mkdir destdir &&
 463         touch one destdir/foo &&
 464         git add -A &&
 465         git commit -m "Conflicts in the way"
 466 '
 467
 468 test_expect_success 'both rename source and destination involved in D/F conflict' '
 469         git reset --hard &&
 470         rm -rf dir~* &&
 471         git checkout -q rename-dest^0 &&
 472         test_must_fail git merge --strategy=recursive source-conflict &&
 473
 474         test 1 -eq "$(git ls-files -u | wc -l)" &&
 475
 476         test_must_fail git diff --quiet &&
 477
 478         test_path_is_file destdir/foo &&
 479         test_path_is_file one &&
 480         test_path_is_file destdir~HEAD &&
 481         test "stuff" = "$(cat destdir~HEAD)"
 482 '
 483
 484 test_expect_success 'setup pair rename to parent of other (D/F conflicts)' '
 485         git reset --hard &&
 486         git checkout --orphan rename-two &&
 487         git rm -rf . &&
 488         git clean -fdqx &&
 489
 490         mkdir one &&
 491         mkdir two &&
 492         echo stuff >one/file &&
 493         echo other >two/file &&
 494         git add -A &&
 495         git commit -m "Common commit" &&
 496
 497         git rm -rf one &&
 498         git mv two/file one &&
 499         git commit -m "Rename two/file -> one" &&
 500
 501         git checkout -b rename-one HEAD~1 &&
 502         git rm -rf two &&
 503         git mv one/file two &&
 504         rm -r one &&
 505         git commit -m "Rename one/file -> two"
 506 '
 507
 508 test_expect_success 'pair rename to parent of other (D/F conflicts) w/ untracked dir' '
 509         git checkout -q rename-one^0 &&
 510         mkdir one &&
 511         test_must_fail git merge --strategy=recursive rename-two &&
 512
 513         test 2 -eq "$(git ls-files -u | wc -l)" &&
 514         test 1 -eq "$(git ls-files -u one | wc -l)" &&
 515         test 1 -eq "$(git ls-files -u two | wc -l)" &&
 516
 517         test_must_fail git diff --quiet &&
 518
 519         test 4 -eq $(find . | grep -v .git | wc -l) &&
 520
 521         test_path_is_dir one &&
 522         test_path_is_file one~rename-two &&
 523         test_path_is_file two &&
 524         test "other" = $(cat one~rename-two) &&
 525         test "stuff" = $(cat two)
 526 '
 527
 528 test_expect_success 'pair rename to parent of other (D/F conflicts) w/ clean start' '
 529         git reset --hard &&
 530         git clean -fdqx &&
 531         test_must_fail git merge --strategy=recursive rename-two &&
 532
 533         test 2 -eq "$(git ls-files -u | wc -l)" &&
 534         test 1 -eq "$(git ls-files -u one | wc -l)" &&
 535         test 1 -eq "$(git ls-files -u two | wc -l)" &&
 536
 537         test_must_fail git diff --quiet &&
 538
 539         test 3 -eq $(find . | grep -v .git | wc -l) &&
 540
 541         test_path_is_file one &&
 542         test_path_is_file two &&
 543         test "other" = $(cat one) &&
 544         test "stuff" = $(cat two)
 545 '
 546
 547 test_expect_success 'setup rename of one file to two, with directories in the way' '
 548         git reset --hard &&
 549         git checkout --orphan first-rename &&
 550         git rm -rf . &&
 551         git clean -fdqx &&
 552
 553         echo stuff >original &&
 554         git add -A &&
 555         git commit -m "Common commit" &&
 556
 557         mkdir two &&
 558         >two/file &&
 559         git add two/file &&
 560         git mv original one &&
 561         git commit -m "Put two/file in the way, rename to one" &&
 562
 563         git checkout -b second-rename HEAD~1 &&
 564         mkdir one &&
 565         >one/file &&
 566         git add one/file &&
 567         git mv original two &&
 568         git commit -m "Put one/file in the way, rename to two"
 569 '
 570
 571 test_expect_success 'check handling of differently renamed file with D/F conflicts' '
 572         git checkout -q first-rename^0 &&
 573         test_must_fail git merge --strategy=recursive second-rename &&
 574
 575         test 5 -eq "$(git ls-files -s | wc -l)" &&
 576         test 3 -eq "$(git ls-files -u | wc -l)" &&
 577         test 1 -eq "$(git ls-files -u one | wc -l)" &&
 578         test 1 -eq "$(git ls-files -u two | wc -l)" &&
 579         test 1 -eq "$(git ls-files -u original | wc -l)" &&
 580         test 2 -eq "$(git ls-files -o | wc -l)" &&
 581
 582         test_path_is_file one/file &&
 583         test_path_is_file two/file &&
 584         test_path_is_file one~HEAD &&
 585         test_path_is_file two~second-rename &&
 586         test_path_is_missing original
 587 '
 588
 589 test_expect_success 'setup rename one file to two; directories moving out of the way' '
 590         git reset --hard &&
 591         git checkout --orphan first-rename-redo &&
 592         git rm -rf . &&
 593         git clean -fdqx &&
 594
 595         echo stuff >original &&
 596         mkdir one two &&
 597         touch one/file two/file &&
 598         git add -A &&
 599         git commit -m "Common commit" &&
 600
 601         git rm -rf one &&
 602         git mv original one &&
 603         git commit -m "Rename to one" &&
 604
 605         git checkout -b second-rename-redo HEAD~1 &&
 606         git rm -rf two &&
 607         git mv original two &&
 608         git commit -m "Rename to two"
 609 '
 610
 611 test_expect_success 'check handling of differently renamed file with D/F conflicts' '
 612         git checkout -q first-rename-redo^0 &&
 613         test_must_fail git merge --strategy=recursive second-rename-redo &&
 614
 615         test 3 -eq "$(git ls-files -u | wc -l)" &&
 616         test 1 -eq "$(git ls-files -u one | wc -l)" &&
 617         test 1 -eq "$(git ls-files -u two | wc -l)" &&
 618         test 1 -eq "$(git ls-files -u original | wc -l)" &&
 619         test 0 -eq "$(git ls-files -o | wc -l)" &&
 620
 621         test_path_is_file one &&
 622         test_path_is_file two &&
 623         test_path_is_missing original
 624 '
 625
 626 test_expect_success 'setup avoid unnecessary update, normal rename' '
 627         git reset --hard &&
 628         git checkout --orphan avoid-unnecessary-update-1 &&
 629         git rm -rf . &&
 630         git clean -fdqx &&
 631
 632         printf "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n" >original &&
 633         git add -A &&
 634         git commit -m "Common commit" &&
 635
 636         git mv original rename &&
 637         echo 11 >>rename &&
 638         git add -u &&
 639         git commit -m "Renamed and modified" &&
 640
 641         git checkout -b merge-branch-1 HEAD~1 &&
 642         echo "random content" >random-file &&
 643         git add -A &&
 644         git commit -m "Random, unrelated changes"
 645 '
 646
 647 test_expect_success 'avoid unnecessary update, normal rename' '
 648         git checkout -q avoid-unnecessary-update-1^0 &&
 649         test-tool chmtime --get -3600 rename >expect &&
 650         git merge merge-branch-1 &&
 651         test-tool chmtime --get rename >actual &&
 652         test_cmp expect actual # "rename" should have stayed intact
 653 '
 654
 655 test_expect_success 'setup to test avoiding unnecessary update, with D/F conflict' '
 656         git reset --hard &&
 657         git checkout --orphan avoid-unnecessary-update-2 &&
 658         git rm -rf . &&
 659         git clean -fdqx &&
 660
 661         mkdir df &&
 662         printf "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n" >df/file &&
 663         git add -A &&
 664         git commit -m "Common commit" &&
 665
 666         git mv df/file temp &&
 667         rm -rf df &&
 668         git mv temp df &&
 669         echo 11 >>df &&
 670         git add -u &&
 671         git commit -m "Renamed and modified" &&
 672
 673         git checkout -b merge-branch-2 HEAD~1 &&
 674         >unrelated-change &&
 675         git add unrelated-change &&
 676         git commit -m "Only unrelated changes"
 677 '
 678
 679 test_expect_success 'avoid unnecessary update, with D/F conflict' '
 680         git checkout -q avoid-unnecessary-update-2^0 &&
 681         test-tool chmtime --get -3600 df >expect &&
 682         git merge merge-branch-2 &&
 683         test-tool chmtime --get df >actual &&
 684         test_cmp expect actual # "df" should have stayed intact
 685 '
 686
 687 test_expect_success 'setup avoid unnecessary update, dir->(file,nothing)' '
 688         git rm -rf . &&
 689         git clean -fdqx &&
 690         rm -rf .git &&
 691         git init &&
 692
 693         >irrelevant &&
 694         mkdir df &&
 695         >df/file &&
 696         git add -A &&
 697         git commit -mA &&
 698
 699         git checkout -b side &&
 700         git rm -rf df &&
 701         git commit -mB &&
 702
 703         git checkout master &&
 704         git rm -rf df &&
 705         echo bla >df &&
 706         git add -A &&
 707         git commit -m "Add a newfile"
 708 '
 709
 710 test_expect_success 'avoid unnecessary update, dir->(file,nothing)' '
 711         git checkout -q master^0 &&
 712         test-tool chmtime --get -3600 df >expect &&
 713         git merge side &&
 714         test-tool chmtime --get df >actual &&
 715         test_cmp expect actual # "df" should have stayed intact
 716 '
 717
 718 test_expect_success 'setup avoid unnecessary update, modify/delete' '
 719         git rm -rf . &&
 720         git clean -fdqx &&
 721         rm -rf .git &&
 722         git init &&
 723
 724         >irrelevant &&
 725         >file &&
 726         git add -A &&
 727         git commit -mA &&
 728
 729         git checkout -b side &&
 730         git rm -f file &&
 731         git commit -m "Delete file" &&
 732
 733         git checkout master &&
 734         echo bla >file &&
 735         git add -A &&
 736         git commit -m "Modify file"
 737 '
 738
 739 test_expect_success 'avoid unnecessary update, modify/delete' '
 740         git checkout -q master^0 &&
 741         test-tool chmtime --get -3600 file >expect &&
 742         test_must_fail git merge side &&
 743         test-tool chmtime --get file >actual &&
 744         test_cmp expect actual # "file" should have stayed intact
 745 '
 746
 747 test_expect_success 'setup avoid unnecessary update, rename/add-dest' '
 748         git rm -rf . &&
 749         git clean -fdqx &&
 750         rm -rf .git &&
 751         git init &&
 752
 753         printf "1\n2\n3\n4\n5\n6\n7\n8\n" >file &&
 754         git add -A &&
 755         git commit -mA &&
 756
 757         git checkout -b side &&
 758         cp file newfile &&
 759         git add -A &&
 760         git commit -m "Add file copy" &&
 761
 762         git checkout master &&
 763         git mv file newfile &&
 764         git commit -m "Rename file"
 765 '
 766
 767 test_expect_success 'avoid unnecessary update, rename/add-dest' '
 768         git checkout -q master^0 &&
 769         test-tool chmtime --get -3600 newfile >expect &&
 770         git merge side &&
 771         test-tool chmtime --get newfile >actual &&
 772         test_cmp expect actual # "file" should have stayed intact
 773 '
 774
 775 test_expect_success 'setup merge of rename + small change' '
 776         git reset --hard &&
 777         git checkout --orphan rename-plus-small-change &&
 778         git rm -rf . &&
 779         git clean -fdqx &&
 780
 781         echo ORIGINAL >file &&
 782         git add file &&
 783
 784         test_tick &&
 785         git commit -m Initial &&
 786         git checkout -b rename_branch &&
 787         git mv file renamed_file &&
 788         git commit -m Rename &&
 789         git checkout rename-plus-small-change &&
 790         echo NEW-VERSION >file &&
 791         git commit -a -m Reformat
 792 '
 793
 794 test_expect_success 'merge rename + small change' '
 795         git merge rename_branch &&
 796
 797         test 1 -eq $(git ls-files -s | wc -l) &&
 798         test 0 -eq $(git ls-files -o | wc -l) &&
 799         test $(git rev-parse HEAD:renamed_file) = $(git rev-parse HEAD~1:file)
 800 '
 801
 802 test_expect_success 'setup for use of extended merge markers' '
 803         git rm -rf . &&
 804         git clean -fdqx &&
 805         rm -rf .git &&
 806         git init &&
 807
 808         printf "1\n2\n3\n4\n5\n6\n7\n8\n" >original_file &&
 809         git add original_file &&
 810         git commit -mA &&
 811
 812         git checkout -b rename &&
 813         echo 9 >>original_file &&
 814         git add original_file &&
 815         git mv original_file renamed_file &&
 816         git commit -mB &&
 817
 818         git checkout master &&
 819         echo 8.5 >>original_file &&
 820         git add original_file &&
 821         git commit -mC
 822 '
 823
 824 test_expect_success 'merge master into rename has correct extended markers' '
 825         git checkout rename^0 &&
 826         test_must_fail git merge -s recursive master^0 &&
 827
 828         cat >expected <<-\EOF &&
 829         1
 830         2
 831         3
 832         4
 833         5
 834         6
 835         7
 836         8
 837         <<<<<<< HEAD:renamed_file
 838         9
 839         =======
 840         8.5
 841         >>>>>>> master^0:original_file
 842         EOF
 843         test_cmp expected renamed_file
 844 '
 845
 846 test_expect_success 'merge rename into master has correct extended markers' '
 847         git reset --hard &&
 848         git checkout master^0 &&
 849         test_must_fail git merge -s recursive rename^0 &&
 850
 851         cat >expected <<-\EOF &&
 852         1
 853         2
 854         3
 855         4
 856         5
 857         6
 858         7
 859         8
 860         <<<<<<< HEAD:original_file
 861         8.5
 862         =======
 863         9
 864         >>>>>>> rename^0:renamed_file
 865         EOF
 866         test_cmp expected renamed_file
 867 '
 868
 869 test_expect_success 'setup spurious "refusing to lose untracked" message' '
 870         git rm -rf . &&
 871         git clean -fdqx &&
 872         rm -rf .git &&
 873         git init &&
 874
 875         > irrelevant_file &&
 876         printf "1\n2\n3\n4\n5\n6\n7\n8\n" >original_file &&
 877         git add irrelevant_file original_file &&
 878         git commit -mA &&
 879
 880         git checkout -b rename &&
 881         git mv original_file renamed_file &&
 882         git commit -mB &&
 883
 884         git checkout master &&
 885         git rm original_file &&
 886         git commit -mC
 887 '
 888
 889 test_expect_success 'no spurious "refusing to lose untracked" message' '
 890         git checkout master^0 &&
 891         test_must_fail git merge rename^0 2>errors.txt &&
 892         ! grep "refusing to lose untracked file" errors.txt
 893 '
 894
 895 test_expect_success 'do not follow renames for empty files' '
 896         git checkout -f -b empty-base &&
 897         >empty1 &&
 898         git add empty1 &&
 899         git commit -m base &&
 900         echo content >empty1 &&
 901         git add empty1 &&
 902         git commit -m fill &&
 903         git checkout -b empty-topic HEAD^ &&
 904         git mv empty1 empty2 &&
 905         git commit -m rename &&
 906         test_must_fail git merge empty-base &&
 907         test_must_be_empty empty2
 908 '
 909
 910 test_done