Andrew's git / gitweb.git / t/t6042-merge-rename-corner-cases.sh
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t / t6042-merge-rename-corner-cases.shon commit Merge branch 'master' of https://github.com/Softcatala/git-po (87af1bb)
   1#!/bin/sh
   2
   3test_description="recursive merge corner cases w/ renames but not criss-crosses"
   4# t6036 has corner cases that involve both criss-cross merges and renames
   5
   6. ./test-lib.sh
   7
   8test_expect_success 'setup rename/delete + untracked file' '
   9        test_create_repo rename-delete-untracked &&
  10        (
  11                cd rename-delete-untracked &&
  12
  13                echo "A pretty inscription" >ring &&
  14                git add ring &&
  15                test_tick &&
  16                git commit -m beginning &&
  17
  18                git branch people &&
  19                git checkout -b rename-the-ring &&
  20                git mv ring one-ring-to-rule-them-all &&
  21                test_tick &&
  22                git commit -m fullname &&
  23
  24                git checkout people &&
  25                git rm ring &&
  26                echo gollum >owner &&
  27                git add owner &&
  28                test_tick &&
  29                git commit -m track-people-instead-of-objects &&
  30                echo "Myyy PRECIOUSSS" >ring
  31        )
  32'
  33
  34test_expect_success "Does git preserve Gollum's precious artifact?" '
  35        (
  36                cd rename-delete-untracked &&
  37
  38                test_must_fail git merge -s recursive rename-the-ring &&
  39
  40                # Make sure git did not delete an untracked file
  41                test_path_is_file ring
  42        )
  43'
  44
  45# Testcase setup for rename/modify/add-source:
  46#   Commit A: new file: a
  47#   Commit B: modify a slightly
  48#   Commit C: rename a->b, add completely different a
  49#
  50# We should be able to merge B & C cleanly
  51
  52test_expect_success 'setup rename/modify/add-source conflict' '
  53        test_create_repo rename-modify-add-source &&
  54        (
  55                cd rename-modify-add-source &&
  56
  57                printf "1\n2\n3\n4\n5\n6\n7\n" >a &&
  58                git add a &&
  59                git commit -m A &&
  60                git tag A &&
  61
  62                git checkout -b B A &&
  63                echo 8 >>a &&
  64                git add a &&
  65                git commit -m B &&
  66
  67                git checkout -b C A &&
  68                git mv a b &&
  69                echo something completely different >a &&
  70                git add a &&
  71                git commit -m C
  72        )
  73'
  74
  75test_expect_failure 'rename/modify/add-source conflict resolvable' '
  76        (
  77                cd rename-modify-add-source &&
  78
  79                git checkout B^0 &&
  80
  81                git merge -s recursive C^0 &&
  82
  83                git rev-parse >expect \
  84                        B:a   C:a     &&
  85                git rev-parse >actual \
  86                        b     c       &&
  87                test_cmp expect actual
  88        )
  89'
  90
  91test_expect_success 'setup resolvable conflict missed if rename missed' '
  92        test_create_repo break-detection-1 &&
  93        (
  94                cd break-detection-1 &&
  95
  96                printf "1\n2\n3\n4\n5\n" >a &&
  97                echo foo >b &&
  98                git add a b &&
  99                git commit -m A &&
 100                git tag A &&
 101
 102                git checkout -b B A &&
 103                git mv a c &&
 104                echo "Completely different content" >a &&
 105                git add a &&
 106                git commit -m B &&
 107
 108                git checkout -b C A &&
 109                echo 6 >>a &&
 110                git add a &&
 111                git commit -m C
 112        )
 113'
 114
 115test_expect_failure 'conflict caused if rename not detected' '
 116        (
 117                cd break-detection-1 &&
 118
 119                git checkout -q C^0 &&
 120                git merge -s recursive B^0 &&
 121
 122                git ls-files -s >out &&
 123                test_line_count = 3 out &&
 124                git ls-files -u >out &&
 125                test_line_count = 0 out &&
 126                git ls-files -o >out &&
 127                test_line_count = 1 out &&
 128
 129                test_line_count = 6 c &&
 130                git rev-parse >expect \
 131                        B:a   A:b     &&
 132                git rev-parse >actual \
 133                        :0:a  :0:b    &&
 134                test_cmp expect actual
 135        )
 136'
 137
 138test_expect_success 'setup conflict resolved wrong if rename missed' '
 139        test_create_repo break-detection-2 &&
 140        (
 141                cd break-detection-2 &&
 142
 143                printf "1\n2\n3\n4\n5\n" >a &&
 144                echo foo >b &&
 145                git add a b &&
 146                git commit -m A &&
 147                git tag A &&
 148
 149                git checkout -b D A &&
 150                echo 7 >>a &&
 151                git add a &&
 152                git mv a c &&
 153                echo "Completely different content" >a &&
 154                git add a &&
 155                git commit -m D &&
 156
 157                git checkout -b E A &&
 158                git rm a &&
 159                echo "Completely different content" >>a &&
 160                git add a &&
 161                git commit -m E
 162        )
 163'
 164
 165test_expect_failure 'missed conflict if rename not detected' '
 166        (
 167                cd break-detection-2 &&
 168
 169                git checkout -q E^0 &&
 170                test_must_fail git merge -s recursive D^0
 171        )
 172'
 173
 174# Tests for undetected rename/add-source causing a file to erroneously be
 175# deleted (and for mishandled rename/rename(1to1) causing the same issue).
 176#
 177# This test uses a rename/rename(1to1)+add-source conflict (1to1 means the
 178# same file is renamed on both sides to the same thing; it should trigger
 179# the 1to2 logic, which it would do if the add-source didn't cause issues
 180# for git's rename detection):
 181#   Commit A: new file: a
 182#   Commit B: rename a->b
 183#   Commit C: rename a->b, add unrelated a
 184
 185test_expect_success 'setup undetected rename/add-source causes data loss' '
 186        test_create_repo break-detection-3 &&
 187        (
 188                cd break-detection-3 &&
 189
 190                printf "1\n2\n3\n4\n5\n" >a &&
 191                git add a &&
 192                git commit -m A &&
 193                git tag A &&
 194
 195                git checkout -b B A &&
 196                git mv a b &&
 197                git commit -m B &&
 198
 199                git checkout -b C A &&
 200                git mv a b &&
 201                echo foobar >a &&
 202                git add a &&
 203                git commit -m C
 204        )
 205'
 206
 207test_expect_failure 'detect rename/add-source and preserve all data' '
 208        (
 209                cd break-detection-3 &&
 210
 211                git checkout B^0 &&
 212
 213                git merge -s recursive C^0 &&
 214
 215                git ls-files -s >out &&
 216                test_line_count = 2 out &&
 217                git ls-files -u >out &&
 218                test_line_count = 2 out &&
 219                git ls-files -o >out &&
 220                test_line_count = 1 out &&
 221
 222                test_path_is_file a &&
 223                test_path_is_file b &&
 224
 225                git rev-parse >expect \
 226                        A:a   C:a     &&
 227                git rev-parse >actual \
 228                        :0:b  :0:a    &&
 229                test_cmp expect actual
 230        )
 231'
 232
 233test_expect_failure 'detect rename/add-source and preserve all data, merge other way' '
 234        (
 235                cd break-detection-3 &&
 236
 237                git checkout C^0 &&
 238
 239                git merge -s recursive B^0 &&
 240
 241                git ls-files -s >out &&
 242                test_line_count = 2 out &&
 243                git ls-files -u >out &&
 244                test_line_count = 2 out &&
 245                git ls-files -o >out &&
 246                test_line_count = 1 out &&
 247
 248                test_path_is_file a &&
 249                test_path_is_file b &&
 250
 251                git rev-parse >expect \
 252                        A:a   C:a     &&
 253                git rev-parse >actual \
 254                        :0:b  :0:a    &&
 255                test_cmp expect actual
 256        )
 257'
 258
 259test_expect_success 'setup content merge + rename/directory conflict' '
 260        test_create_repo rename-directory-1 &&
 261        (
 262                cd rename-directory-1 &&
 263
 264                printf "1\n2\n3\n4\n5\n6\n" >file &&
 265                git add file &&
 266                test_tick &&
 267                git commit -m base &&
 268                git tag base &&
 269
 270                git checkout -b right &&
 271                echo 7 >>file &&
 272                mkdir newfile &&
 273                echo junk >newfile/realfile &&
 274                git add file newfile/realfile &&
 275                test_tick &&
 276                git commit -m right &&
 277
 278                git checkout -b left-conflict base &&
 279                echo 8 >>file &&
 280                git add file &&
 281                git mv file newfile &&
 282                test_tick &&
 283                git commit -m left &&
 284
 285                git checkout -b left-clean base &&
 286                echo 0 >newfile &&
 287                cat file >>newfile &&
 288                git add newfile &&
 289                git rm file &&
 290                test_tick &&
 291                git commit -m left
 292        )
 293'
 294
 295test_expect_success 'rename/directory conflict + clean content merge' '
 296        (
 297                cd rename-directory-1 &&
 298
 299                git checkout left-clean^0 &&
 300
 301                test_must_fail git merge -s recursive right^0 &&
 302
 303                git ls-files -s >out &&
 304                test_line_count = 2 out &&
 305                git ls-files -u >out &&
 306                test_line_count = 1 out &&
 307                git ls-files -o >out &&
 308                test_line_count = 2 out &&
 309
 310                echo 0 >expect &&
 311                git cat-file -p base:file >>expect &&
 312                echo 7 >>expect &&
 313                test_cmp expect newfile~HEAD &&
 314
 315                test $(git rev-parse :2:newfile) = $(git hash-object expect) &&
 316
 317                test_path_is_file newfile/realfile &&
 318                test_path_is_file newfile~HEAD
 319        )
 320'
 321
 322test_expect_success 'rename/directory conflict + content merge conflict' '
 323        (
 324                cd rename-directory-1 &&
 325
 326                git reset --hard &&
 327                git clean -fdqx &&
 328
 329                git checkout left-conflict^0 &&
 330
 331                test_must_fail git merge -s recursive right^0 &&
 332
 333                git ls-files -s >out &&
 334                test_line_count = 4 out &&
 335                git ls-files -u >out &&
 336                test_line_count = 3 out &&
 337                git ls-files -o >out &&
 338                test_line_count = 2 out &&
 339
 340                git cat-file -p left-conflict:newfile >left &&
 341                git cat-file -p base:file    >base &&
 342                git cat-file -p right:file   >right &&
 343                test_must_fail git merge-file \
 344                        -L "HEAD:newfile" \
 345                        -L "" \
 346                        -L "right^0:file" \
 347                        left base right &&
 348                test_cmp left newfile~HEAD &&
 349
 350                git rev-parse >expect                                 \
 351                        base:file   left-conflict:newfile  right:file &&
 352                git rev-parse >actual                                 \
 353                        :1:newfile  :2:newfile             :3:newfile &&
 354                test_cmp expect actual &&
 355
 356                test_path_is_file newfile/realfile &&
 357                test_path_is_file newfile~HEAD
 358        )
 359'
 360
 361test_expect_success 'setup content merge + rename/directory conflict w/ disappearing dir' '
 362        test_create_repo rename-directory-2 &&
 363        (
 364                cd rename-directory-2 &&
 365
 366                mkdir sub &&
 367                printf "1\n2\n3\n4\n5\n6\n" >sub/file &&
 368                git add sub/file &&
 369                test_tick &&
 370                git commit -m base &&
 371                git tag base &&
 372
 373                git checkout -b right &&
 374                echo 7 >>sub/file &&
 375                git add sub/file &&
 376                test_tick &&
 377                git commit -m right &&
 378
 379                git checkout -b left base &&
 380                echo 0 >newfile &&
 381                cat sub/file >>newfile &&
 382                git rm sub/file &&
 383                mv newfile sub &&
 384                git add sub &&
 385                test_tick &&
 386                git commit -m left
 387        )
 388'
 389
 390test_expect_success 'disappearing dir in rename/directory conflict handled' '
 391        (
 392                cd rename-directory-2 &&
 393
 394                git checkout left^0 &&
 395
 396                git merge -s recursive right^0 &&
 397
 398                git ls-files -s >out &&
 399                test_line_count = 1 out &&
 400                git ls-files -u >out &&
 401                test_line_count = 0 out &&
 402                git ls-files -o >out &&
 403                test_line_count = 1 out &&
 404
 405                echo 0 >expect &&
 406                git cat-file -p base:sub/file >>expect &&
 407                echo 7 >>expect &&
 408                test_cmp expect sub &&
 409
 410                test_path_is_file sub
 411        )
 412'
 413
 414# Test for all kinds of things that can go wrong with rename/rename (2to1):
 415#   Commit A: new files: a & b
 416#   Commit B: rename a->c, modify b
 417#   Commit C: rename b->c, modify a
 418#
 419# Merging of B & C should NOT be clean.  Questions:
 420#   * Both a & b should be removed by the merge; are they?
 421#   * The two c's should contain modifications to a & b; do they?
 422#   * The index should contain two files, both for c; does it?
 423#   * The working copy should have two files, both of form c~<unique>; does it?
 424#   * Nothing else should be present.  Is anything?
 425
 426test_expect_success 'setup rename/rename (2to1) + modify/modify' '
 427        test_create_repo rename-rename-2to1 &&
 428        (
 429                cd rename-rename-2to1 &&
 430
 431                printf "1\n2\n3\n4\n5\n" >a &&
 432                printf "5\n4\n3\n2\n1\n" >b &&
 433                git add a b &&
 434                git commit -m A &&
 435                git tag A &&
 436
 437                git checkout -b B A &&
 438                git mv a c &&
 439                echo 0 >>b &&
 440                git add b &&
 441                git commit -m B &&
 442
 443                git checkout -b C A &&
 444                git mv b c &&
 445                echo 6 >>a &&
 446                git add a &&
 447                git commit -m C
 448        )
 449'
 450
 451test_expect_success 'handle rename/rename (2to1) conflict correctly' '
 452        (
 453                cd rename-rename-2to1 &&
 454
 455                git checkout B^0 &&
 456
 457                test_must_fail git merge -s recursive C^0 >out &&
 458                test_i18ngrep "CONFLICT (rename/rename)" out &&
 459
 460                git ls-files -s >out &&
 461                test_line_count = 2 out &&
 462                git ls-files -u >out &&
 463                test_line_count = 2 out &&
 464                git ls-files -u c >out &&
 465                test_line_count = 2 out &&
 466                git ls-files -o >out &&
 467                test_line_count = 3 out &&
 468
 469                test_path_is_missing a &&
 470                test_path_is_missing b &&
 471                test_path_is_file c~HEAD &&
 472                test_path_is_file c~C^0 &&
 473
 474                git rev-parse >expect   \
 475                        C:a     B:b     &&
 476                git hash-object >actual \
 477                        c~HEAD  c~C^0   &&
 478                test_cmp expect actual
 479        )
 480'
 481
 482# Testcase setup for simple rename/rename (1to2) conflict:
 483#   Commit A: new file: a
 484#   Commit B: rename a->b
 485#   Commit C: rename a->c
 486test_expect_success 'setup simple rename/rename (1to2) conflict' '
 487        test_create_repo rename-rename-1to2 &&
 488        (
 489                cd rename-rename-1to2 &&
 490
 491                echo stuff >a &&
 492                git add a &&
 493                test_tick &&
 494                git commit -m A &&
 495                git tag A &&
 496
 497                git checkout -b B A &&
 498                git mv a b &&
 499                test_tick &&
 500                git commit -m B &&
 501
 502                git checkout -b C A &&
 503                git mv a c &&
 504                test_tick &&
 505                git commit -m C
 506        )
 507'
 508
 509test_expect_success 'merge has correct working tree contents' '
 510        (
 511                cd rename-rename-1to2 &&
 512
 513                git checkout C^0 &&
 514
 515                test_must_fail git merge -s recursive B^0 &&
 516
 517                git ls-files -s >out &&
 518                test_line_count = 3 out &&
 519                git ls-files -u >out &&
 520                test_line_count = 3 out &&
 521                git ls-files -o >out &&
 522                test_line_count = 1 out &&
 523
 524                test_path_is_missing a &&
 525                git rev-parse >expect   \
 526                        A:a   A:a   A:a \
 527                        A:a   A:a       &&
 528                git rev-parse >actual    \
 529                        :1:a  :3:b  :2:c &&
 530                git hash-object >>actual \
 531                        b     c          &&
 532                test_cmp expect actual
 533        )
 534'
 535
 536# Testcase setup for rename/rename(1to2)/add-source conflict:
 537#   Commit A: new file: a
 538#   Commit B: rename a->b
 539#   Commit C: rename a->c, add completely different a
 540#
 541# Merging of B & C should NOT be clean; there's a rename/rename conflict
 542
 543test_expect_success 'setup rename/rename(1to2)/add-source conflict' '
 544        test_create_repo rename-rename-1to2-add-source-1 &&
 545        (
 546                cd rename-rename-1to2-add-source-1 &&
 547
 548                printf "1\n2\n3\n4\n5\n6\n7\n" >a &&
 549                git add a &&
 550                git commit -m A &&
 551                git tag A &&
 552
 553                git checkout -b B A &&
 554                git mv a b &&
 555                git commit -m B &&
 556
 557                git checkout -b C A &&
 558                git mv a c &&
 559                echo something completely different >a &&
 560                git add a &&
 561                git commit -m C
 562        )
 563'
 564
 565test_expect_failure 'detect conflict with rename/rename(1to2)/add-source merge' '
 566        (
 567                cd rename-rename-1to2-add-source-1 &&
 568
 569                git checkout B^0 &&
 570
 571                test_must_fail git merge -s recursive C^0 &&
 572
 573                git ls-files -s >out &&
 574                test_line_count = 4 out &&
 575                git ls-files -o >out &&
 576                test_line_count = 1 out &&
 577
 578                git rev-parse >expect         \
 579                        C:a   A:a   B:b   C:C &&
 580                git rev-parse >actual          \
 581                        :3:a  :1:a  :2:b  :3:c &&
 582                test_cmp expect actual &&
 583
 584                test_path_is_file a &&
 585                test_path_is_file b &&
 586                test_path_is_file c
 587        )
 588'
 589
 590test_expect_success 'setup rename/rename(1to2)/add-source resolvable conflict' '
 591        test_create_repo rename-rename-1to2-add-source-2 &&
 592        (
 593                cd rename-rename-1to2-add-source-2 &&
 594
 595                >a &&
 596                git add a &&
 597                test_tick &&
 598                git commit -m base &&
 599                git tag A &&
 600
 601                git checkout -b B A &&
 602                git mv a b &&
 603                test_tick &&
 604                git commit -m one &&
 605
 606                git checkout -b C A &&
 607                git mv a b &&
 608                echo important-info >a &&
 609                git add a &&
 610                test_tick &&
 611                git commit -m two
 612        )
 613'
 614
 615test_expect_failure 'rename/rename/add-source still tracks new a file' '
 616        (
 617                cd rename-rename-1to2-add-source-2 &&
 618
 619                git checkout C^0 &&
 620                git merge -s recursive B^0 &&
 621
 622                git ls-files -s >out &&
 623                test_line_count = 2 out &&
 624                git ls-files -o >out &&
 625                test_line_count = 1 out &&
 626
 627                git rev-parse >expect \
 628                        C:a   A:a     &&
 629                git rev-parse >actual \
 630                        :0:a  :0:b    &&
 631                test_cmp expect actual
 632        )
 633'
 634
 635test_expect_success 'setup rename/rename(1to2)/add-dest conflict' '
 636        test_create_repo rename-rename-1to2-add-dest &&
 637        (
 638                cd rename-rename-1to2-add-dest &&
 639
 640                echo stuff >a &&
 641                git add a &&
 642                test_tick &&
 643                git commit -m base &&
 644                git tag A &&
 645
 646                git checkout -b B A &&
 647                git mv a b &&
 648                echo precious-data >c &&
 649                git add c &&
 650                test_tick &&
 651                git commit -m one &&
 652
 653                git checkout -b C A &&
 654                git mv a c &&
 655                echo important-info >b &&
 656                git add b &&
 657                test_tick &&
 658                git commit -m two
 659        )
 660'
 661
 662test_expect_success 'rename/rename/add-dest merge still knows about conflicting file versions' '
 663        (
 664                cd rename-rename-1to2-add-dest &&
 665
 666                git checkout C^0 &&
 667                test_must_fail git merge -s recursive B^0 &&
 668
 669                git ls-files -s >out &&
 670                test_line_count = 5 out &&
 671                git ls-files -u b >out &&
 672                test_line_count = 2 out &&
 673                git ls-files -u c >out &&
 674                test_line_count = 2 out &&
 675                git ls-files -o >out &&
 676                test_line_count = 5 out &&
 677
 678                git rev-parse >expect               \
 679                        A:a   C:b   B:b   C:c   B:c &&
 680                git rev-parse >actual                \
 681                        :1:a  :2:b  :3:b  :2:c  :3:c &&
 682                test_cmp expect actual &&
 683
 684                git rev-parse >expect               \
 685                        C:c     B:c     C:b     B:b &&
 686                git hash-object >actual                \
 687                        c~HEAD  c~B\^0  b~HEAD  b~B\^0 &&
 688                test_cmp expect actual &&
 689
 690                test_path_is_missing b &&
 691                test_path_is_missing c
 692        )
 693'
 694
 695# Testcase rad, rename/add/delete
 696#   Commit O: foo
 697#   Commit A: rm foo, add different bar
 698#   Commit B: rename foo->bar
 699#   Expected: CONFLICT (rename/add/delete), two-way merged bar
 700
 701test_expect_success 'rad-setup: rename/add/delete conflict' '
 702        test_create_repo rad &&
 703        (
 704                cd rad &&
 705                echo "original file" >foo &&
 706                git add foo &&
 707                git commit -m "original" &&
 708
 709                git branch O &&
 710                git branch A &&
 711                git branch B &&
 712
 713                git checkout A &&
 714                git rm foo &&
 715                echo "different file" >bar &&
 716                git add bar &&
 717                git commit -m "Remove foo, add bar" &&
 718
 719                git checkout B &&
 720                git mv foo bar &&
 721                git commit -m "rename foo to bar"
 722        )
 723'
 724
 725test_expect_failure 'rad-check: rename/add/delete conflict' '
 726        (
 727                cd rad &&
 728
 729                git checkout B^0 &&
 730                test_must_fail git merge -s recursive A^0 >out 2>err &&
 731
 732                # Not sure whether the output should contain just one
 733                # "CONFLICT (rename/add/delete)" line, or if it should break
 734                # it into a pair of "CONFLICT (rename/delete)" and
 735                # "CONFLICT (rename/add)"; allow for either.
 736                test_i18ngrep "CONFLICT (rename.*add)" out &&
 737                test_i18ngrep "CONFLICT (rename.*delete)" out &&
 738                test_must_be_empty err &&
 739
 740                git ls-files -s >file_count &&
 741                test_line_count = 2 file_count &&
 742                git ls-files -u >file_count &&
 743                test_line_count = 2 file_count &&
 744                git ls-files -o >file_count &&
 745                test_line_count = 2 file_count &&
 746
 747                git rev-parse >actual \
 748                        :2:bar :3:bar &&
 749                git rev-parse >expect \
 750                        B:bar  A:bar  &&
 751
 752                test_cmp file_is_missing foo &&
 753                # bar should have two-way merged contents of the different
 754                # versions of bar; check that content from both sides is
 755                # present.
 756                grep original bar &&
 757                grep different bar
 758        )
 759'
 760
 761# Testcase rrdd, rename/rename(2to1)/delete/delete
 762#   Commit O: foo, bar
 763#   Commit A: rename foo->baz, rm bar
 764#   Commit B: rename bar->baz, rm foo
 765#   Expected: CONFLICT (rename/rename/delete/delete), two-way merged baz
 766
 767test_expect_success 'rrdd-setup: rename/rename(2to1)/delete/delete conflict' '
 768        test_create_repo rrdd &&
 769        (
 770                cd rrdd &&
 771                echo foo >foo &&
 772                echo bar >bar &&
 773                git add foo bar &&
 774                git commit -m O &&
 775
 776                git branch O &&
 777                git branch A &&
 778                git branch B &&
 779
 780                git checkout A &&
 781                git mv foo baz &&
 782                git rm bar &&
 783                git commit -m "Rename foo, remove bar" &&
 784
 785                git checkout B &&
 786                git mv bar baz &&
 787                git rm foo &&
 788                git commit -m "Rename bar, remove foo"
 789        )
 790'
 791
 792test_expect_failure 'rrdd-check: rename/rename(2to1)/delete/delete conflict' '
 793        (
 794                cd rrdd &&
 795
 796                git checkout A^0 &&
 797                test_must_fail git merge -s recursive B^0 >out 2>err &&
 798
 799                # Not sure whether the output should contain just one
 800                # "CONFLICT (rename/rename/delete/delete)" line, or if it
 801                # should break it into three: "CONFLICT (rename/rename)" and
 802                # two "CONFLICT (rename/delete)" lines; allow for either.
 803                test_i18ngrep "CONFLICT (rename/rename)" out &&
 804                test_i18ngrep "CONFLICT (rename.*delete)" out &&
 805                test_must_be_empty err &&
 806
 807                git ls-files -s >file_count &&
 808                test_line_count = 2 file_count &&
 809                git ls-files -u >file_count &&
 810                test_line_count = 2 file_count &&
 811                git ls-files -o >file_count &&
 812                test_line_count = 2 file_count &&
 813
 814                git rev-parse >actual \
 815                        :2:baz :3:baz &&
 816                git rev-parse >expect \
 817                        O:foo  O:bar  &&
 818
 819                test_cmp file_is_missing foo &&
 820                test_cmp file_is_missing bar &&
 821                # baz should have two-way merged contents of the original
 822                # contents of foo and bar; check that content from both sides
 823                # is present.
 824                grep foo baz &&
 825                grep bar baz
 826        )
 827'
 828
 829# Testcase mod6, chains of rename/rename(1to2) and rename/rename(2to1)
 830#   Commit O: one,      three,       five
 831#   Commit A: one->two, three->four, five->six
 832#   Commit B: one->six, three->two,  five->four
 833#   Expected: six CONFLICT(rename/rename) messages, each path in two of the
 834#             multi-way merged contents found in two, four, six
 835
 836test_expect_success 'mod6-setup: chains of rename/rename(1to2) and rename/rename(2to1)' '
 837        test_create_repo mod6 &&
 838        (
 839                cd mod6 &&
 840                test_seq 11 19 >one &&
 841                test_seq 31 39 >three &&
 842                test_seq 51 59 >five &&
 843                git add . &&
 844                test_tick &&
 845                git commit -m "O" &&
 846
 847                git branch O &&
 848                git branch A &&
 849                git branch B &&
 850
 851                git checkout A &&
 852                test_seq 10 19 >one &&
 853                echo 40        >>three &&
 854                git add one three &&
 855                git mv  one   two  &&
 856                git mv  three four &&
 857                git mv  five  six  &&
 858                test_tick &&
 859                git commit -m "A" &&
 860
 861                git checkout B &&
 862                echo 20    >>one       &&
 863                echo forty >>three     &&
 864                echo 60    >>five      &&
 865                git add one three five &&
 866                git mv  one   six  &&
 867                git mv  three two  &&
 868                git mv  five  four &&
 869                test_tick &&
 870                git commit -m "B"
 871        )
 872'
 873
 874test_expect_failure 'mod6-check: chains of rename/rename(1to2) and rename/rename(2to1)' '
 875        (
 876                cd mod6 &&
 877
 878                git checkout A^0 &&
 879
 880                test_must_fail git merge -s recursive B^0 >out 2>err &&
 881
 882                test_i18ngrep "CONFLICT (rename/rename)" out &&
 883                test_must_be_empty err &&
 884
 885                git ls-files -s >file_count &&
 886                test_line_count = 6 file_count &&
 887                git ls-files -u >file_count &&
 888                test_line_count = 6 file_count &&
 889                git ls-files -o >file_count &&
 890                test_line_count = 3 file_count &&
 891
 892                test_seq 10 20 >merged-one &&
 893                test_seq 51 60 >merged-five &&
 894                # Determine what the merge of three would give us.
 895                test_seq 30 40 >three-side-A &&
 896                test_seq 31 39 >three-side-B &&
 897                echo forty >three-side-B &&
 898                >empty &&
 899                test_must_fail git merge-file \
 900                        -L "HEAD" \
 901                        -L "" \
 902                        -L "B^0" \
 903                        three-side-A empty three-side-B &&
 904                sed -e "s/^\([<=>]\)/\1\1\1/" three-side-A >merged-three &&
 905
 906                # Verify the index is as expected
 907                git rev-parse >actual         \
 908                        :2:two       :3:two   \
 909                        :2:four      :3:four  \
 910                        :2:six       :3:six   &&
 911                git hash-object >expect           \
 912                        merged-one   merged-three \
 913                        merged-three merged-five  \
 914                        merged-five  merged-one   &&
 915                test_cmp expect actual &&
 916
 917                git cat-file -p :2:two >expect &&
 918                git cat-file -p :3:two >other &&
 919                test_must_fail git merge-file    \
 920                        -L "HEAD"  -L ""  -L "B^0" \
 921                        expect     empty  other &&
 922                test_cmp expect two &&
 923
 924                git cat-file -p :2:four >expect &&
 925                git cat-file -p :3:four >other &&
 926                test_must_fail git merge-file    \
 927                        -L "HEAD"  -L ""  -L "B^0" \
 928                        expect     empty  other &&
 929                test_cmp expect four &&
 930
 931                git cat-file -p :2:six >expect &&
 932                git cat-file -p :3:six >other &&
 933                test_must_fail git merge-file    \
 934                        -L "HEAD"  -L ""  -L "B^0" \
 935                        expect     empty  other &&
 936                test_cmp expect six
 937        )
 938'
 939
 940test_done