t/t4015-diff-whitespace.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2006 Johannes E. Schindelin
   4 #
   5
   6 test_description='Test special whitespace in diff engine.
   7
   8 '
   9 . ./test-lib.sh
  10 . "$TEST_DIRECTORY"/diff-lib.sh
  11
  12 test_expect_success "Ray Lehtiniemi's example" '
  13         cat <<-\EOF >x &&
  14         do {
  15            nothing;
  16         } while (0);
  17         EOF
  18         git update-index --add x &&
  19
  20         cat <<-\EOF >x &&
  21         do
  22         {
  23            nothing;
  24         }
  25         while (0);
  26         EOF
  27
  28         cat <<-\EOF >expect &&
  29         diff --git a/x b/x
  30         index adf3937..6edc172 100644
  31         --- a/x
  32         +++ b/x
  33         @@ -1,3 +1,5 @@
  34         -do {
  35         +do
  36         +{
  37             nothing;
  38         -} while (0);
  39         +}
  40         +while (0);
  41         EOF
  42
  43         git diff >out &&
  44         test_cmp expect out &&
  45
  46         git diff -w >out &&
  47         test_cmp expect out &&
  48
  49         git diff -b >out &&
  50         test_cmp expect out
  51 '
  52
  53 test_expect_success 'another test, without options' '
  54         tr Q "\015" <<-\EOF >x &&
  55         whitespace at beginning
  56         whitespace change
  57         whitespace in the middle
  58         whitespace at end
  59         unchanged line
  60         CR at endQ
  61         EOF
  62
  63         git update-index x &&
  64
  65         tr "_" " " <<-\EOF >x &&
  66         _       whitespace at beginning
  67         whitespace       change
  68         white space in the middle
  69         whitespace at end__
  70         unchanged line
  71         CR at end
  72         EOF
  73
  74         tr "Q_" "\015 " <<-\EOF >expect &&
  75         diff --git a/x b/x
  76         index d99af23..22d9f73 100644
  77         --- a/x
  78         +++ b/x
  79         @@ -1,6 +1,6 @@
  80         -whitespace at beginning
  81         -whitespace change
  82         -whitespace in the middle
  83         -whitespace at end
  84         +       whitespace at beginning
  85         +whitespace      change
  86         +white space in the middle
  87         +whitespace at end__
  88          unchanged line
  89         -CR at endQ
  90         +CR at end
  91         EOF
  92
  93         git diff >out &&
  94         test_cmp expect out &&
  95
  96         git diff -w >out &&
  97         test_must_be_empty out &&
  98
  99         git diff -w -b >out &&
 100         test_must_be_empty out &&
 101
 102         git diff -w --ignore-space-at-eol >out &&
 103         test_must_be_empty out &&
 104
 105         git diff -w -b --ignore-space-at-eol >out &&
 106         test_must_be_empty out &&
 107
 108         git diff -w --ignore-cr-at-eol >out &&
 109         test_must_be_empty out &&
 110
 111         tr "Q_" "\015 " <<-\EOF >expect &&
 112         diff --git a/x b/x
 113         index d99af23..22d9f73 100644
 114         --- a/x
 115         +++ b/x
 116         @@ -1,6 +1,6 @@
 117         -whitespace at beginning
 118         +_      whitespace at beginning
 119          whitespace      change
 120         -whitespace in the middle
 121         +white space in the middle
 122          whitespace at end__
 123          unchanged line
 124          CR at end
 125         EOF
 126         git diff -b >out &&
 127         test_cmp expect out &&
 128
 129         git diff -b --ignore-space-at-eol >out &&
 130         test_cmp expect out &&
 131
 132         git diff -b --ignore-cr-at-eol >out &&
 133         test_cmp expect out &&
 134
 135         tr "Q_" "\015 " <<-\EOF >expect &&
 136         diff --git a/x b/x
 137         index d99af23..22d9f73 100644
 138         --- a/x
 139         +++ b/x
 140         @@ -1,6 +1,6 @@
 141         -whitespace at beginning
 142         -whitespace change
 143         -whitespace in the middle
 144         +_      whitespace at beginning
 145         +whitespace      change
 146         +white space in the middle
 147          whitespace at end__
 148          unchanged line
 149          CR at end
 150         EOF
 151         git diff --ignore-space-at-eol >out &&
 152         test_cmp expect out &&
 153
 154         git diff --ignore-space-at-eol --ignore-cr-at-eol >out &&
 155         test_cmp expect out &&
 156
 157         tr "Q_" "\015 " <<-\EOF >expect &&
 158         diff --git a/x b/x
 159         index_d99af23..22d9f73 100644
 160         --- a/x
 161         +++ b/x
 162         @@ -1,6 +1,6 @@
 163         -whitespace at beginning
 164         -whitespace change
 165         -whitespace in the middle
 166         -whitespace at end
 167         +_      whitespace at beginning
 168         +whitespace_    _change
 169         +white space in the middle
 170         +whitespace at end__
 171          unchanged line
 172          CR at end
 173         EOF
 174         git diff --ignore-cr-at-eol >out &&
 175         test_cmp expect out
 176 '
 177
 178 test_expect_success 'ignore-blank-lines: only new lines' '
 179         test_seq 5 >x &&
 180         git update-index x &&
 181         test_seq 5 | sed "/3/i\\
 182 " >x &&
 183         git diff --ignore-blank-lines >out &&
 184         test_must_be_empty out
 185 '
 186
 187 test_expect_success 'ignore-blank-lines: only new lines with space' '
 188         test_seq 5 >x &&
 189         git update-index x &&
 190         test_seq 5 | sed "/3/i\\
 191  " >x &&
 192         git diff -w --ignore-blank-lines >out &&
 193         test_must_be_empty out
 194 '
 195
 196 test_expect_success 'ignore-blank-lines: after change' '
 197         cat <<-\EOF >x &&
 198         1
 199         2
 200
 201         3
 202         4
 203         5
 204
 205         6
 206         7
 207         EOF
 208         git update-index x &&
 209         cat <<-\EOF >x &&
 210         change
 211
 212         1
 213         2
 214         3
 215         4
 216         5
 217         6
 218
 219         7
 220         EOF
 221         git diff --inter-hunk-context=100 --ignore-blank-lines >out.tmp &&
 222         cat <<-\EOF >expected &&
 223         diff --git a/x b/x
 224         --- a/x
 225         +++ b/x
 226         @@ -1,6 +1,7 @@
 227         +change
 228         +
 229          1
 230          2
 231         -
 232          3
 233          4
 234          5
 235         EOF
 236         compare_diff_patch expected out.tmp
 237 '
 238
 239 test_expect_success 'ignore-blank-lines: before change' '
 240         cat <<-\EOF >x &&
 241         1
 242         2
 243
 244         3
 245         4
 246         5
 247         6
 248         7
 249         EOF
 250         git update-index x &&
 251         cat <<-\EOF >x &&
 252
 253         1
 254         2
 255         3
 256         4
 257         5
 258
 259         6
 260         7
 261         change
 262         EOF
 263         git diff --inter-hunk-context=100 --ignore-blank-lines >out.tmp &&
 264         cat <<-\EOF >expected &&
 265         diff --git a/x b/x
 266         --- a/x
 267         +++ b/x
 268         @@ -4,5 +4,7 @@
 269          3
 270          4
 271          5
 272         +
 273          6
 274          7
 275         +change
 276         EOF
 277         compare_diff_patch expected out.tmp
 278 '
 279
 280 test_expect_success 'ignore-blank-lines: between changes' '
 281         cat <<-\EOF >x &&
 282         1
 283         2
 284         3
 285         4
 286         5
 287
 288
 289         6
 290         7
 291         8
 292         9
 293         10
 294         EOF
 295         git update-index x &&
 296         cat <<-\EOF >x &&
 297         change
 298         1
 299         2
 300
 301         3
 302         4
 303         5
 304         6
 305         7
 306         8
 307
 308         9
 309         10
 310         change
 311         EOF
 312         git diff --ignore-blank-lines >out.tmp &&
 313         cat <<-\EOF >expected &&
 314         diff --git a/x b/x
 315         --- a/x
 316         +++ b/x
 317         @@ -1,5 +1,7 @@
 318         +change
 319          1
 320          2
 321         +
 322          3
 323          4
 324          5
 325         @@ -8,5 +8,7 @@
 326          6
 327          7
 328          8
 329         +
 330          9
 331          10
 332         +change
 333         EOF
 334         compare_diff_patch expected out.tmp
 335 '
 336
 337 test_expect_success 'ignore-blank-lines: between changes (with interhunkctx)' '
 338         test_seq 10 >x &&
 339         git update-index x &&
 340         cat <<-\EOF >x &&
 341         change
 342         1
 343         2
 344
 345         3
 346         4
 347         5
 348
 349         6
 350         7
 351         8
 352         9
 353
 354         10
 355         change
 356         EOF
 357         git diff --inter-hunk-context=2 --ignore-blank-lines >out.tmp &&
 358         cat <<-\EOF >expected &&
 359         diff --git a/x b/x
 360         --- a/x
 361         +++ b/x
 362         @@ -1,10 +1,15 @@
 363         +change
 364          1
 365          2
 366         +
 367          3
 368          4
 369          5
 370         +
 371          6
 372          7
 373          8
 374          9
 375         +
 376          10
 377         +change
 378         EOF
 379         compare_diff_patch expected out.tmp
 380 '
 381
 382 test_expect_success 'ignore-blank-lines: scattered spaces' '
 383         test_seq 10 >x &&
 384         git update-index x &&
 385         cat <<-\EOF >x &&
 386         change
 387         1
 388         2
 389         3
 390
 391         4
 392
 393         5
 394
 395         6
 396
 397
 398         7
 399
 400         8
 401         9
 402         10
 403         change
 404         EOF
 405         git diff --inter-hunk-context=4 --ignore-blank-lines >out.tmp &&
 406         cat <<-\EOF >expected &&
 407         diff --git a/x b/x
 408         --- a/x
 409         +++ b/x
 410         @@ -1,3 +1,4 @@
 411         +change
 412          1
 413          2
 414          3
 415         @@ -8,3 +15,4 @@
 416          8
 417          9
 418          10
 419         +change
 420         EOF
 421         compare_diff_patch expected out.tmp
 422 '
 423
 424 test_expect_success 'ignore-blank-lines: spaces coalesce' '
 425         test_seq 6 >x &&
 426         git update-index x &&
 427         cat <<-\EOF >x &&
 428         change
 429         1
 430         2
 431         3
 432
 433         4
 434
 435         5
 436
 437         6
 438         change
 439         EOF
 440         git diff --inter-hunk-context=4 --ignore-blank-lines >out.tmp &&
 441         cat <<-\EOF >expected &&
 442         diff --git a/x b/x
 443         --- a/x
 444         +++ b/x
 445         @@ -1,6 +1,11 @@
 446         +change
 447          1
 448          2
 449          3
 450         +
 451          4
 452         +
 453          5
 454         +
 455          6
 456         +change
 457         EOF
 458         compare_diff_patch expected out.tmp
 459 '
 460
 461 test_expect_success 'ignore-blank-lines: mix changes and blank lines' '
 462         test_seq 16 >x &&
 463         git update-index x &&
 464         cat <<-\EOF >x &&
 465         change
 466         1
 467         2
 468
 469         3
 470         4
 471         5
 472         change
 473         6
 474         7
 475         8
 476
 477         9
 478         10
 479         11
 480         change
 481         12
 482         13
 483         14
 484
 485         15
 486         16
 487         change
 488         EOF
 489         git diff --ignore-blank-lines >out.tmp &&
 490         cat <<-\EOF >expected &&
 491         diff --git a/x b/x
 492         --- a/x
 493         +++ b/x
 494         @@ -1,8 +1,11 @@
 495         +change
 496          1
 497          2
 498         +
 499          3
 500          4
 501          5
 502         +change
 503          6
 504          7
 505          8
 506         @@ -9,8 +13,11 @@
 507          9
 508          10
 509          11
 510         +change
 511          12
 512          13
 513          14
 514         +
 515          15
 516          16
 517         +change
 518         EOF
 519         compare_diff_patch expected out.tmp
 520 '
 521
 522 test_expect_success 'check mixed spaces and tabs in indent' '
 523         # This is indented with SP HT SP.
 524         echo "   foo();" >x &&
 525         git diff --check | grep "space before tab in indent"
 526 '
 527
 528 test_expect_success 'check mixed tabs and spaces in indent' '
 529         # This is indented with HT SP HT.
 530         echo "          foo();" >x &&
 531         git diff --check | grep "space before tab in indent"
 532 '
 533
 534 test_expect_success 'check with no whitespace errors' '
 535         git commit -m "snapshot" &&
 536         echo "foo();" >x &&
 537         git diff --check
 538 '
 539
 540 test_expect_success 'check with trailing whitespace' '
 541         echo "foo(); " >x &&
 542         test_must_fail git diff --check
 543 '
 544
 545 test_expect_success 'check with space before tab in indent' '
 546         # indent has space followed by hard tab
 547         echo "  foo();" >x &&
 548         test_must_fail git diff --check
 549 '
 550
 551 test_expect_success '--check and --exit-code are not exclusive' '
 552         git checkout x &&
 553         git diff --check --exit-code
 554 '
 555
 556 test_expect_success '--check and --quiet are not exclusive' '
 557         git diff --check --quiet
 558 '
 559
 560 test_expect_success 'check staged with no whitespace errors' '
 561         echo "foo();" >x &&
 562         git add x &&
 563         git diff --cached --check
 564 '
 565
 566 test_expect_success 'check staged with trailing whitespace' '
 567         echo "foo(); " >x &&
 568         git add x &&
 569         test_must_fail git diff --cached --check
 570 '
 571
 572 test_expect_success 'check staged with space before tab in indent' '
 573         # indent has space followed by hard tab
 574         echo "  foo();" >x &&
 575         git add x &&
 576         test_must_fail git diff --cached --check
 577 '
 578
 579 test_expect_success 'check with no whitespace errors (diff-index)' '
 580         echo "foo();" >x &&
 581         git add x &&
 582         git diff-index --check HEAD
 583 '
 584
 585 test_expect_success 'check with trailing whitespace (diff-index)' '
 586         echo "foo(); " >x &&
 587         git add x &&
 588         test_must_fail git diff-index --check HEAD
 589 '
 590
 591 test_expect_success 'check with space before tab in indent (diff-index)' '
 592         # indent has space followed by hard tab
 593         echo "  foo();" >x &&
 594         git add x &&
 595         test_must_fail git diff-index --check HEAD
 596 '
 597
 598 test_expect_success 'check staged with no whitespace errors (diff-index)' '
 599         echo "foo();" >x &&
 600         git add x &&
 601         git diff-index --cached --check HEAD
 602 '
 603
 604 test_expect_success 'check staged with trailing whitespace (diff-index)' '
 605         echo "foo(); " >x &&
 606         git add x &&
 607         test_must_fail git diff-index --cached --check HEAD
 608 '
 609
 610 test_expect_success 'check staged with space before tab in indent (diff-index)' '
 611         # indent has space followed by hard tab
 612         echo "  foo();" >x &&
 613         git add x &&
 614         test_must_fail git diff-index --cached --check HEAD
 615 '
 616
 617 test_expect_success 'check with no whitespace errors (diff-tree)' '
 618         echo "foo();" >x &&
 619         git commit -m "new commit" x &&
 620         git diff-tree --check HEAD^ HEAD
 621 '
 622
 623 test_expect_success 'check with trailing whitespace (diff-tree)' '
 624         echo "foo(); " >x &&
 625         git commit -m "another commit" x &&
 626         test_must_fail git diff-tree --check HEAD^ HEAD
 627 '
 628
 629 test_expect_success 'check with space before tab in indent (diff-tree)' '
 630         # indent has space followed by hard tab
 631         echo "  foo();" >x &&
 632         git commit -m "yet another" x &&
 633         test_must_fail git diff-tree --check HEAD^ HEAD
 634 '
 635
 636 test_expect_success 'check with ignored trailing whitespace attr (diff-tree)' '
 637         test_when_finished "git reset --hard HEAD^" &&
 638
 639         # create a whitespace error that should be ignored
 640         echo "* -whitespace" >.gitattributes &&
 641         git add .gitattributes &&
 642         echo "foo(); " >x &&
 643         git add x &&
 644         git commit -m "add trailing space" &&
 645
 646         # with a worktree diff-tree ignores the whitespace error
 647         git diff-tree --root --check HEAD &&
 648
 649         # without a worktree diff-tree still ignores the whitespace error
 650         git -C .git diff-tree --root --check HEAD
 651 '
 652
 653 test_expect_success 'check trailing whitespace (trailing-space: off)' '
 654         git config core.whitespace "-trailing-space" &&
 655         echo "foo ();   " >x &&
 656         git diff --check
 657 '
 658
 659 test_expect_success 'check trailing whitespace (trailing-space: on)' '
 660         git config core.whitespace "trailing-space" &&
 661         echo "foo ();   " >x &&
 662         test_must_fail git diff --check
 663 '
 664
 665 test_expect_success 'check space before tab in indent (space-before-tab: off)' '
 666         # indent contains space followed by HT
 667         git config core.whitespace "-space-before-tab" &&
 668         echo "  foo ();" >x &&
 669         git diff --check
 670 '
 671
 672 test_expect_success 'check space before tab in indent (space-before-tab: on)' '
 673         # indent contains space followed by HT
 674         git config core.whitespace "space-before-tab" &&
 675         echo "  foo ();   " >x &&
 676         test_must_fail git diff --check
 677 '
 678
 679 test_expect_success 'check spaces as indentation (indent-with-non-tab: off)' '
 680         git config core.whitespace "-indent-with-non-tab" &&
 681         echo "        foo ();" >x &&
 682         git diff --check
 683 '
 684
 685 test_expect_success 'check spaces as indentation (indent-with-non-tab: on)' '
 686         git config core.whitespace "indent-with-non-tab" &&
 687         echo "        foo ();" >x &&
 688         test_must_fail git diff --check
 689 '
 690
 691 test_expect_success 'ditto, but tabwidth=9' '
 692         git config core.whitespace "indent-with-non-tab,tabwidth=9" &&
 693         git diff --check
 694 '
 695
 696 test_expect_success 'check tabs and spaces as indentation (indent-with-non-tab: on)' '
 697         git config core.whitespace "indent-with-non-tab" &&
 698         echo "                  foo ();" >x &&
 699         test_must_fail git diff --check
 700 '
 701
 702 test_expect_success 'ditto, but tabwidth=10' '
 703         git config core.whitespace "indent-with-non-tab,tabwidth=10" &&
 704         test_must_fail git diff --check
 705 '
 706
 707 test_expect_success 'ditto, but tabwidth=20' '
 708         git config core.whitespace "indent-with-non-tab,tabwidth=20" &&
 709         git diff --check
 710 '
 711
 712 test_expect_success 'check tabs as indentation (tab-in-indent: off)' '
 713         git config core.whitespace "-tab-in-indent" &&
 714         echo "  foo ();" >x &&
 715         git diff --check
 716 '
 717
 718 test_expect_success 'check tabs as indentation (tab-in-indent: on)' '
 719         git config core.whitespace "tab-in-indent" &&
 720         echo "  foo ();" >x &&
 721         test_must_fail git diff --check
 722 '
 723
 724 test_expect_success 'check tabs and spaces as indentation (tab-in-indent: on)' '
 725         git config core.whitespace "tab-in-indent" &&
 726         echo "                  foo ();" >x &&
 727         test_must_fail git diff --check
 728 '
 729
 730 test_expect_success 'ditto, but tabwidth=1 (must be irrelevant)' '
 731         git config core.whitespace "tab-in-indent,tabwidth=1" &&
 732         test_must_fail git diff --check
 733 '
 734
 735 test_expect_success 'check tab-in-indent and indent-with-non-tab conflict' '
 736         git config core.whitespace "tab-in-indent,indent-with-non-tab" &&
 737         echo "foo ();" >x &&
 738         test_must_fail git diff --check
 739 '
 740
 741 test_expect_success 'check tab-in-indent excluded from wildcard whitespace attribute' '
 742         git config --unset core.whitespace &&
 743         echo "x whitespace" >.gitattributes &&
 744         echo "    foo ();" >x &&
 745         git diff --check &&
 746         rm -f .gitattributes
 747 '
 748
 749 test_expect_success 'line numbers in --check output are correct' '
 750         echo "" >x &&
 751         echo "foo(); " >>x &&
 752         git diff --check | grep "x:2:"
 753 '
 754
 755 test_expect_success 'checkdiff detects new trailing blank lines (1)' '
 756         echo "foo();" >x &&
 757         echo "" >>x &&
 758         git diff --check | grep "new blank line"
 759 '
 760
 761 test_expect_success 'checkdiff detects new trailing blank lines (2)' '
 762         { echo a; echo b; echo; echo; } >x &&
 763         git add x &&
 764         { echo a; echo; echo; echo; echo; } >x &&
 765         git diff --check | grep "new blank line"
 766 '
 767
 768 test_expect_success 'checkdiff allows new blank lines' '
 769         git checkout x &&
 770         mv x y &&
 771         (
 772                 echo "/* This is new */" &&
 773                 echo "" &&
 774                 cat y
 775         ) >x &&
 776         git diff --check
 777 '
 778
 779 cat <<EOF >expect
 780 EOF
 781 test_expect_success 'whitespace-only changes not reported' '
 782         git reset --hard &&
 783         echo >x "hello world" &&
 784         git add x &&
 785         git commit -m "hello 1" &&
 786         echo >x "hello  world" &&
 787         git diff -b >actual &&
 788         test_cmp expect actual
 789 '
 790
 791 cat <<EOF >expect
 792 diff --git a/x b/z
 793 similarity index NUM%
 794 rename from x
 795 rename to z
 796 index 380c32a..a97b785 100644
 797 EOF
 798 test_expect_success 'whitespace-only changes reported across renames' '
 799         git reset --hard &&
 800         for i in 1 2 3 4 5 6 7 8 9; do echo "$i$i$i$i$i$i"; done >x &&
 801         git add x &&
 802         git commit -m "base" &&
 803         sed -e "5s/^/ /" x >z &&
 804         git rm x &&
 805         git add z &&
 806         git diff -w -M --cached |
 807         sed -e "/^similarity index /s/[0-9][0-9]*/NUM/" >actual &&
 808         test_cmp expect actual
 809 '
 810
 811 cat >expected <<\EOF
 812 diff --git a/empty b/void
 813 similarity index 100%
 814 rename from empty
 815 rename to void
 816 EOF
 817
 818 test_expect_success 'rename empty' '
 819         git reset --hard &&
 820         >empty &&
 821         git add empty &&
 822         git commit -m empty &&
 823         git mv empty void &&
 824         git diff -w --cached -M >current &&
 825         test_cmp expected current
 826 '
 827
 828 test_expect_success 'combined diff with autocrlf conversion' '
 829
 830         git reset --hard &&
 831         echo >x hello &&
 832         git commit -m "one side" x &&
 833         git checkout HEAD^ &&
 834         echo >x goodbye &&
 835         git commit -m "the other side" x &&
 836         git config core.autocrlf true &&
 837         test_must_fail git merge master &&
 838
 839         git diff | sed -e "1,/^@@@/d" >actual &&
 840         ! grep "^-" actual
 841
 842 '
 843
 844 # Start testing the colored format for whitespace checks
 845
 846 test_expect_success 'setup diff colors' '
 847         git config color.diff.plain normal &&
 848         git config color.diff.meta bold &&
 849         git config color.diff.frag cyan &&
 850         git config color.diff.func normal &&
 851         git config color.diff.old red &&
 852         git config color.diff.new green &&
 853         git config color.diff.commit yellow &&
 854         git config color.diff.whitespace blue &&
 855
 856         git config core.autocrlf false
 857 '
 858
 859 test_expect_success 'diff that introduces a line with only tabs' '
 860         git config core.whitespace blank-at-eol &&
 861         git reset --hard &&
 862         echo "test" >x &&
 863         git commit -m "initial" x &&
 864         echo "{NTN}" | tr "NT" "\n\t" >>x &&
 865         git diff --color | test_decode_color >current &&
 866
 867         cat >expected <<-\EOF &&
 868         <BOLD>diff --git a/x b/x<RESET>
 869         <BOLD>index 9daeafb..2874b91 100644<RESET>
 870         <BOLD>--- a/x<RESET>
 871         <BOLD>+++ b/x<RESET>
 872         <CYAN>@@ -1 +1,4 @@<RESET>
 873          test<RESET>
 874         <GREEN>+<RESET><GREEN>{<RESET>
 875         <GREEN>+<RESET><BLUE>   <RESET>
 876         <GREEN>+<RESET><GREEN>}<RESET>
 877         EOF
 878
 879         test_cmp expected current
 880 '
 881
 882 test_expect_success 'diff that introduces and removes ws breakages' '
 883         git reset --hard &&
 884         {
 885                 echo "0. blank-at-eol " &&
 886                 echo "1. blank-at-eol "
 887         } >x &&
 888         git commit -a --allow-empty -m preimage &&
 889         {
 890                 echo "0. blank-at-eol " &&
 891                 echo "1. still-blank-at-eol " &&
 892                 echo "2. and a new line "
 893         } >x &&
 894
 895         git diff --color |
 896         test_decode_color >current &&
 897
 898         cat >expected <<-\EOF &&
 899         <BOLD>diff --git a/x b/x<RESET>
 900         <BOLD>index d0233a2..700886e 100644<RESET>
 901         <BOLD>--- a/x<RESET>
 902         <BOLD>+++ b/x<RESET>
 903         <CYAN>@@ -1,2 +1,3 @@<RESET>
 904          0. blank-at-eol <RESET>
 905         <RED>-1. blank-at-eol <RESET>
 906         <GREEN>+<RESET><GREEN>1. still-blank-at-eol<RESET><BLUE> <RESET>
 907         <GREEN>+<RESET><GREEN>2. and a new line<RESET><BLUE> <RESET>
 908         EOF
 909
 910         test_cmp expected current
 911 '
 912
 913 test_expect_success 'ws-error-highlight test setup' '
 914
 915         git reset --hard &&
 916         {
 917                 echo "0. blank-at-eol " &&
 918                 echo "1. blank-at-eol "
 919         } >x &&
 920         git commit -a --allow-empty -m preimage &&
 921         {
 922                 echo "0. blank-at-eol " &&
 923                 echo "1. still-blank-at-eol " &&
 924                 echo "2. and a new line "
 925         } >x &&
 926
 927         cat >expect.default-old <<-\EOF &&
 928         <BOLD>diff --git a/x b/x<RESET>
 929         <BOLD>index d0233a2..700886e 100644<RESET>
 930         <BOLD>--- a/x<RESET>
 931         <BOLD>+++ b/x<RESET>
 932         <CYAN>@@ -1,2 +1,3 @@<RESET>
 933          0. blank-at-eol <RESET>
 934         <RED>-<RESET><RED>1. blank-at-eol<RESET><BLUE> <RESET>
 935         <GREEN>+<RESET><GREEN>1. still-blank-at-eol<RESET><BLUE> <RESET>
 936         <GREEN>+<RESET><GREEN>2. and a new line<RESET><BLUE> <RESET>
 937         EOF
 938
 939         cat >expect.all <<-\EOF &&
 940         <BOLD>diff --git a/x b/x<RESET>
 941         <BOLD>index d0233a2..700886e 100644<RESET>
 942         <BOLD>--- a/x<RESET>
 943         <BOLD>+++ b/x<RESET>
 944         <CYAN>@@ -1,2 +1,3 @@<RESET>
 945          <RESET>0. blank-at-eol<RESET><BLUE> <RESET>
 946         <RED>-<RESET><RED>1. blank-at-eol<RESET><BLUE> <RESET>
 947         <GREEN>+<RESET><GREEN>1. still-blank-at-eol<RESET><BLUE> <RESET>
 948         <GREEN>+<RESET><GREEN>2. and a new line<RESET><BLUE> <RESET>
 949         EOF
 950
 951         cat >expect.none <<-\EOF
 952         <BOLD>diff --git a/x b/x<RESET>
 953         <BOLD>index d0233a2..700886e 100644<RESET>
 954         <BOLD>--- a/x<RESET>
 955         <BOLD>+++ b/x<RESET>
 956         <CYAN>@@ -1,2 +1,3 @@<RESET>
 957          0. blank-at-eol <RESET>
 958         <RED>-1. blank-at-eol <RESET>
 959         <GREEN>+1. still-blank-at-eol <RESET>
 960         <GREEN>+2. and a new line <RESET>
 961         EOF
 962
 963 '
 964
 965 test_expect_success 'test --ws-error-highlight option' '
 966
 967         git diff --color --ws-error-highlight=default,old |
 968         test_decode_color >current &&
 969         test_cmp expect.default-old current &&
 970
 971         git diff --color --ws-error-highlight=all |
 972         test_decode_color >current &&
 973         test_cmp expect.all current &&
 974
 975         git diff --color --ws-error-highlight=none |
 976         test_decode_color >current &&
 977         test_cmp expect.none current
 978
 979 '
 980
 981 test_expect_success 'test diff.wsErrorHighlight config' '
 982
 983         git -c diff.wsErrorHighlight=default,old diff --color |
 984         test_decode_color >current &&
 985         test_cmp expect.default-old current &&
 986
 987         git -c diff.wsErrorHighlight=all diff --color |
 988         test_decode_color >current &&
 989         test_cmp expect.all current &&
 990
 991         git -c diff.wsErrorHighlight=none diff --color |
 992         test_decode_color >current &&
 993         test_cmp expect.none current
 994
 995 '
 996
 997 test_expect_success 'option overrides diff.wsErrorHighlight' '
 998
 999         git -c diff.wsErrorHighlight=none \
1000                 diff --color --ws-error-highlight=default,old |
1001         test_decode_color >current &&
1002         test_cmp expect.default-old current &&
1003
1004         git -c diff.wsErrorHighlight=default \
1005                 diff --color --ws-error-highlight=all |
1006         test_decode_color >current &&
1007         test_cmp expect.all current &&
1008
1009         git -c diff.wsErrorHighlight=all \
1010                 diff --color --ws-error-highlight=none |
1011         test_decode_color >current &&
1012         test_cmp expect.none current
1013
1014 '
1015
1016 test_expect_success 'detect moved code, complete file' '
1017         git reset --hard &&
1018         cat <<-\EOF >test.c &&
1019         #include<stdio.h>
1020         main()
1021         {
1022         printf("Hello World");
1023         }
1024         EOF
1025         git add test.c &&
1026         git commit -m "add main function" &&
1027         git mv test.c main.c &&
1028         test_config color.diff.oldMoved "normal red" &&
1029         test_config color.diff.newMoved "normal green" &&
1030         git diff HEAD --color-moved=zebra --color --no-renames | test_decode_color >actual &&
1031         cat >expected <<-\EOF &&
1032         <BOLD>diff --git a/main.c b/main.c<RESET>
1033         <BOLD>new file mode 100644<RESET>
1034         <BOLD>index 0000000..a986c57<RESET>
1035         <BOLD>--- /dev/null<RESET>
1036         <BOLD>+++ b/main.c<RESET>
1037         <CYAN>@@ -0,0 +1,5 @@<RESET>
1038         <BGREEN>+<RESET><BGREEN>#include<stdio.h><RESET>
1039         <BGREEN>+<RESET><BGREEN>main()<RESET>
1040         <BGREEN>+<RESET><BGREEN>{<RESET>
1041         <BGREEN>+<RESET><BGREEN>printf("Hello World");<RESET>
1042         <BGREEN>+<RESET><BGREEN>}<RESET>
1043         <BOLD>diff --git a/test.c b/test.c<RESET>
1044         <BOLD>deleted file mode 100644<RESET>
1045         <BOLD>index a986c57..0000000<RESET>
1046         <BOLD>--- a/test.c<RESET>
1047         <BOLD>+++ /dev/null<RESET>
1048         <CYAN>@@ -1,5 +0,0 @@<RESET>
1049         <BRED>-#include<stdio.h><RESET>
1050         <BRED>-main()<RESET>
1051         <BRED>-{<RESET>
1052         <BRED>-printf("Hello World");<RESET>
1053         <BRED>-}<RESET>
1054         EOF
1055
1056         test_cmp expected actual
1057 '
1058
1059 test_expect_success 'detect malicious moved code, inside file' '
1060         test_config color.diff.oldMoved "normal red" &&
1061         test_config color.diff.newMoved "normal green" &&
1062         test_config color.diff.oldMovedAlternative "blue" &&
1063         test_config color.diff.newMovedAlternative "yellow" &&
1064         git reset --hard &&
1065         cat <<-\EOF >main.c &&
1066                 #include<stdio.h>
1067                 int stuff()
1068                 {
1069                         printf("Hello ");
1070                         printf("World\n");
1071                 }
1072
1073                 int secure_foo(struct user *u)
1074                 {
1075                         if (!u->is_allowed_foo)
1076                                 return;
1077                         foo(u);
1078                 }
1079
1080                 int main()
1081                 {
1082                         foo();
1083                 }
1084         EOF
1085         cat <<-\EOF >test.c &&
1086                 #include<stdio.h>
1087                 int bar()
1088                 {
1089                         printf("Hello World, but different\n");
1090                 }
1091
1092                 int another_function()
1093                 {
1094                         bar();
1095                 }
1096         EOF
1097         git add main.c test.c &&
1098         git commit -m "add main and test file" &&
1099         cat <<-\EOF >main.c &&
1100                 #include<stdio.h>
1101                 int stuff()
1102                 {
1103                         printf("Hello ");
1104                         printf("World\n");
1105                 }
1106
1107                 int main()
1108                 {
1109                         foo();
1110                 }
1111         EOF
1112         cat <<-\EOF >test.c &&
1113                 #include<stdio.h>
1114                 int bar()
1115                 {
1116                         printf("Hello World, but different\n");
1117                 }
1118
1119                 int secure_foo(struct user *u)
1120                 {
1121                         foo(u);
1122                         if (!u->is_allowed_foo)
1123                                 return;
1124                 }
1125
1126                 int another_function()
1127                 {
1128                         bar();
1129                 }
1130         EOF
1131         git diff HEAD --no-renames --color-moved=zebra --color | test_decode_color >actual &&
1132         cat <<-\EOF >expected &&
1133         <BOLD>diff --git a/main.c b/main.c<RESET>
1134         <BOLD>index 27a619c..7cf9336 100644<RESET>
1135         <BOLD>--- a/main.c<RESET>
1136         <BOLD>+++ b/main.c<RESET>
1137         <CYAN>@@ -5,13 +5,6 @@<RESET> <RESET>printf("Hello ");<RESET>
1138          printf("World\n");<RESET>
1139          }<RESET>
1140          <RESET>
1141         <BRED>-int secure_foo(struct user *u)<RESET>
1142         <BRED>-{<RESET>
1143         <BLUE>-if (!u->is_allowed_foo)<RESET>
1144         <BLUE>-return;<RESET>
1145         <RED>-foo(u);<RESET>
1146         <RED>-}<RESET>
1147         <RED>-<RESET>
1148          int main()<RESET>
1149          {<RESET>
1150          foo();<RESET>
1151         <BOLD>diff --git a/test.c b/test.c<RESET>
1152         <BOLD>index 1dc1d85..2bedec9 100644<RESET>
1153         <BOLD>--- a/test.c<RESET>
1154         <BOLD>+++ b/test.c<RESET>
1155         <CYAN>@@ -4,6 +4,13 @@<RESET> <RESET>int bar()<RESET>
1156          printf("Hello World, but different\n");<RESET>
1157          }<RESET>
1158          <RESET>
1159         <BGREEN>+<RESET><BGREEN>int secure_foo(struct user *u)<RESET>
1160         <BGREEN>+<RESET><BGREEN>{<RESET>
1161         <GREEN>+<RESET><GREEN>foo(u);<RESET>
1162         <BGREEN>+<RESET><BGREEN>if (!u->is_allowed_foo)<RESET>
1163         <BGREEN>+<RESET><BGREEN>return;<RESET>
1164         <GREEN>+<RESET><GREEN>}<RESET>
1165         <GREEN>+<RESET>
1166          int another_function()<RESET>
1167          {<RESET>
1168          bar();<RESET>
1169         EOF
1170
1171         test_cmp expected actual
1172 '
1173
1174 test_expect_success 'plain moved code, inside file' '
1175         test_config color.diff.oldMoved "normal red" &&
1176         test_config color.diff.newMoved "normal green" &&
1177         test_config color.diff.oldMovedAlternative "blue" &&
1178         test_config color.diff.newMovedAlternative "yellow" &&
1179         # needs previous test as setup
1180         git diff HEAD --no-renames --color-moved=plain --color | test_decode_color >actual &&
1181         cat <<-\EOF >expected &&
1182         <BOLD>diff --git a/main.c b/main.c<RESET>
1183         <BOLD>index 27a619c..7cf9336 100644<RESET>
1184         <BOLD>--- a/main.c<RESET>
1185         <BOLD>+++ b/main.c<RESET>
1186         <CYAN>@@ -5,13 +5,6 @@<RESET> <RESET>printf("Hello ");<RESET>
1187          printf("World\n");<RESET>
1188          }<RESET>
1189          <RESET>
1190         <BRED>-int secure_foo(struct user *u)<RESET>
1191         <BRED>-{<RESET>
1192         <BRED>-if (!u->is_allowed_foo)<RESET>
1193         <BRED>-return;<RESET>
1194         <BRED>-foo(u);<RESET>
1195         <BRED>-}<RESET>
1196         <BRED>-<RESET>
1197          int main()<RESET>
1198          {<RESET>
1199          foo();<RESET>
1200         <BOLD>diff --git a/test.c b/test.c<RESET>
1201         <BOLD>index 1dc1d85..2bedec9 100644<RESET>
1202         <BOLD>--- a/test.c<RESET>
1203         <BOLD>+++ b/test.c<RESET>
1204         <CYAN>@@ -4,6 +4,13 @@<RESET> <RESET>int bar()<RESET>
1205          printf("Hello World, but different\n");<RESET>
1206          }<RESET>
1207          <RESET>
1208         <BGREEN>+<RESET><BGREEN>int secure_foo(struct user *u)<RESET>
1209         <BGREEN>+<RESET><BGREEN>{<RESET>
1210         <BGREEN>+<RESET><BGREEN>foo(u);<RESET>
1211         <BGREEN>+<RESET><BGREEN>if (!u->is_allowed_foo)<RESET>
1212         <BGREEN>+<RESET><BGREEN>return;<RESET>
1213         <BGREEN>+<RESET><BGREEN>}<RESET>
1214         <BGREEN>+<RESET>
1215          int another_function()<RESET>
1216          {<RESET>
1217          bar();<RESET>
1218         EOF
1219
1220         test_cmp expected actual
1221 '
1222
1223 test_expect_success 'detect permutations inside moved code -- dimmed_zebra' '
1224         git reset --hard &&
1225         cat <<-\EOF >lines.txt &&
1226                 long line 1
1227                 long line 2
1228                 long line 3
1229                 line 4
1230                 line 5
1231                 line 6
1232                 line 7
1233                 line 8
1234                 line 9
1235                 line 10
1236                 line 11
1237                 line 12
1238                 line 13
1239                 long line 14
1240                 long line 15
1241                 long line 16
1242         EOF
1243         git add lines.txt &&
1244         git commit -m "add poetry" &&
1245         cat <<-\EOF >lines.txt &&
1246                 line 4
1247                 line 5
1248                 line 6
1249                 line 7
1250                 line 8
1251                 line 9
1252                 long line 1
1253                 long line 2
1254                 long line 3
1255                 long line 14
1256                 long line 15
1257                 long line 16
1258                 line 10
1259                 line 11
1260                 line 12
1261                 line 13
1262         EOF
1263         test_config color.diff.oldMoved "magenta" &&
1264         test_config color.diff.newMoved "cyan" &&
1265         test_config color.diff.oldMovedAlternative "blue" &&
1266         test_config color.diff.newMovedAlternative "yellow" &&
1267         test_config color.diff.oldMovedDimmed "normal magenta" &&
1268         test_config color.diff.newMovedDimmed "normal cyan" &&
1269         test_config color.diff.oldMovedAlternativeDimmed "normal blue" &&
1270         test_config color.diff.newMovedAlternativeDimmed "normal yellow" &&
1271         git diff HEAD --no-renames --color-moved=dimmed_zebra --color |
1272                 grep -v "index" |
1273                 test_decode_color >actual &&
1274         cat <<-\EOF >expected &&
1275         <BOLD>diff --git a/lines.txt b/lines.txt<RESET>
1276         <BOLD>--- a/lines.txt<RESET>
1277         <BOLD>+++ b/lines.txt<RESET>
1278         <CYAN>@@ -1,16 +1,16 @@<RESET>
1279         <BMAGENTA>-long line 1<RESET>
1280         <BMAGENTA>-long line 2<RESET>
1281         <BMAGENTA>-long line 3<RESET>
1282          line 4<RESET>
1283          line 5<RESET>
1284          line 6<RESET>
1285          line 7<RESET>
1286          line 8<RESET>
1287          line 9<RESET>
1288         <BCYAN>+<RESET><BCYAN>long line 1<RESET>
1289         <BCYAN>+<RESET><BCYAN>long line 2<RESET>
1290         <CYAN>+<RESET><CYAN>long line 3<RESET>
1291         <YELLOW>+<RESET><YELLOW>long line 14<RESET>
1292         <BYELLOW>+<RESET><BYELLOW>long line 15<RESET>
1293         <BYELLOW>+<RESET><BYELLOW>long line 16<RESET>
1294          line 10<RESET>
1295          line 11<RESET>
1296          line 12<RESET>
1297          line 13<RESET>
1298         <BMAGENTA>-long line 14<RESET>
1299         <BMAGENTA>-long line 15<RESET>
1300         <BMAGENTA>-long line 16<RESET>
1301         EOF
1302         test_cmp expected actual
1303 '
1304
1305 test_expect_success 'cmd option assumes configured colored-moved' '
1306         test_config color.diff.oldMoved "magenta" &&
1307         test_config color.diff.newMoved "cyan" &&
1308         test_config color.diff.oldMovedAlternative "blue" &&
1309         test_config color.diff.newMovedAlternative "yellow" &&
1310         test_config color.diff.oldMovedDimmed "normal magenta" &&
1311         test_config color.diff.newMovedDimmed "normal cyan" &&
1312         test_config color.diff.oldMovedAlternativeDimmed "normal blue" &&
1313         test_config color.diff.newMovedAlternativeDimmed "normal yellow" &&
1314         test_config diff.colorMoved zebra &&
1315         git diff HEAD --no-renames --color-moved --color |
1316                 grep -v "index" |
1317                 test_decode_color >actual &&
1318         cat <<-\EOF >expected &&
1319         <BOLD>diff --git a/lines.txt b/lines.txt<RESET>
1320         <BOLD>--- a/lines.txt<RESET>
1321         <BOLD>+++ b/lines.txt<RESET>
1322         <CYAN>@@ -1,16 +1,16 @@<RESET>
1323         <MAGENTA>-long line 1<RESET>
1324         <MAGENTA>-long line 2<RESET>
1325         <MAGENTA>-long line 3<RESET>
1326          line 4<RESET>
1327          line 5<RESET>
1328          line 6<RESET>
1329          line 7<RESET>
1330          line 8<RESET>
1331          line 9<RESET>
1332         <CYAN>+<RESET><CYAN>long line 1<RESET>
1333         <CYAN>+<RESET><CYAN>long line 2<RESET>
1334         <CYAN>+<RESET><CYAN>long line 3<RESET>
1335         <YELLOW>+<RESET><YELLOW>long line 14<RESET>
1336         <YELLOW>+<RESET><YELLOW>long line 15<RESET>
1337         <YELLOW>+<RESET><YELLOW>long line 16<RESET>
1338          line 10<RESET>
1339          line 11<RESET>
1340          line 12<RESET>
1341          line 13<RESET>
1342         <MAGENTA>-long line 14<RESET>
1343         <MAGENTA>-long line 15<RESET>
1344         <MAGENTA>-long line 16<RESET>
1345         EOF
1346         test_cmp expected actual
1347 '
1348
1349 test_expect_success 'no effect from --color-moved with --word-diff' '
1350         cat <<-\EOF >text.txt &&
1351         Lorem Ipsum is simply dummy text of the printing and typesetting industry.
1352         EOF
1353         git add text.txt &&
1354         git commit -a -m "clean state" &&
1355         cat <<-\EOF >text.txt &&
1356         simply Lorem Ipsum dummy is text of the typesetting and printing industry.
1357         EOF
1358         git diff --color-moved --word-diff >actual &&
1359         git diff --word-diff >expect &&
1360         test_cmp expect actual
1361 '
1362
1363 test_expect_success 'set up whitespace tests' '
1364         git reset --hard &&
1365         # Note that these lines have no leading or trailing whitespace.
1366         cat <<-\EOF >lines.txt &&
1367         line 1
1368         line 2
1369         line 3
1370         line 4
1371         line 5
1372         long line 6
1373         long line 7
1374         long line 8
1375         long line 9
1376         EOF
1377         git add lines.txt &&
1378         git commit -m "add poetry" &&
1379         git config color.diff.oldMoved "magenta" &&
1380         git config color.diff.newMoved "cyan"
1381 '
1382
1383 test_expect_success 'move detection ignoring whitespace ' '
1384         q_to_tab <<-\EOF >lines.txt &&
1385         Qlong line 6
1386         Qlong line 7
1387         Qlong line 8
1388         Qchanged long line 9
1389         line 1
1390         line 2
1391         line 3
1392         line 4
1393         line 5
1394         EOF
1395         git diff HEAD --no-renames --color-moved --color |
1396                 grep -v "index" |
1397                 test_decode_color >actual &&
1398         cat <<-\EOF >expected &&
1399         <BOLD>diff --git a/lines.txt b/lines.txt<RESET>
1400         <BOLD>--- a/lines.txt<RESET>
1401         <BOLD>+++ b/lines.txt<RESET>
1402         <CYAN>@@ -1,9 +1,9 @@<RESET>
1403         <GREEN>+<RESET> <GREEN>long line 6<RESET>
1404         <GREEN>+<RESET> <GREEN>long line 7<RESET>
1405         <GREEN>+<RESET> <GREEN>long line 8<RESET>
1406         <GREEN>+<RESET> <GREEN>changed long line 9<RESET>
1407          line 1<RESET>
1408          line 2<RESET>
1409          line 3<RESET>
1410          line 4<RESET>
1411          line 5<RESET>
1412         <RED>-long line 6<RESET>
1413         <RED>-long line 7<RESET>
1414         <RED>-long line 8<RESET>
1415         <RED>-long line 9<RESET>
1416         EOF
1417         test_cmp expected actual &&
1418
1419         git diff HEAD --no-renames -w --color-moved --color |
1420                 grep -v "index" |
1421                 test_decode_color >actual &&
1422         cat <<-\EOF >expected &&
1423         <BOLD>diff --git a/lines.txt b/lines.txt<RESET>
1424         <BOLD>--- a/lines.txt<RESET>
1425         <BOLD>+++ b/lines.txt<RESET>
1426         <CYAN>@@ -1,9 +1,9 @@<RESET>
1427         <CYAN>+<RESET>  <CYAN>long line 6<RESET>
1428         <CYAN>+<RESET>  <CYAN>long line 7<RESET>
1429         <CYAN>+<RESET>  <CYAN>long line 8<RESET>
1430         <GREEN>+<RESET> <GREEN>changed long line 9<RESET>
1431          line 1<RESET>
1432          line 2<RESET>
1433          line 3<RESET>
1434          line 4<RESET>
1435          line 5<RESET>
1436         <MAGENTA>-long line 6<RESET>
1437         <MAGENTA>-long line 7<RESET>
1438         <MAGENTA>-long line 8<RESET>
1439         <RED>-long line 9<RESET>
1440         EOF
1441         test_cmp expected actual
1442 '
1443
1444 test_expect_success 'move detection ignoring whitespace changes' '
1445         git reset --hard &&
1446         # Lines 6-8 have a space change, but 9 is new whitespace
1447         q_to_tab <<-\EOF >lines.txt &&
1448         longQline 6
1449         longQline 7
1450         longQline 8
1451         long liQne 9
1452         line 1
1453         line 2
1454         line 3
1455         line 4
1456         line 5
1457         EOF
1458
1459         git diff HEAD --no-renames --color-moved --color |
1460                 grep -v "index" |
1461                 test_decode_color >actual &&
1462         cat <<-\EOF >expected &&
1463         <BOLD>diff --git a/lines.txt b/lines.txt<RESET>
1464         <BOLD>--- a/lines.txt<RESET>
1465         <BOLD>+++ b/lines.txt<RESET>
1466         <CYAN>@@ -1,9 +1,9 @@<RESET>
1467         <GREEN>+<RESET><GREEN>long      line 6<RESET>
1468         <GREEN>+<RESET><GREEN>long      line 7<RESET>
1469         <GREEN>+<RESET><GREEN>long      line 8<RESET>
1470         <GREEN>+<RESET><GREEN>long li   ne 9<RESET>
1471          line 1<RESET>
1472          line 2<RESET>
1473          line 3<RESET>
1474          line 4<RESET>
1475          line 5<RESET>
1476         <RED>-long line 6<RESET>
1477         <RED>-long line 7<RESET>
1478         <RED>-long line 8<RESET>
1479         <RED>-long line 9<RESET>
1480         EOF
1481         test_cmp expected actual &&
1482
1483         git diff HEAD --no-renames -b --color-moved --color |
1484                 grep -v "index" |
1485                 test_decode_color >actual &&
1486         cat <<-\EOF >expected &&
1487         <BOLD>diff --git a/lines.txt b/lines.txt<RESET>
1488         <BOLD>--- a/lines.txt<RESET>
1489         <BOLD>+++ b/lines.txt<RESET>
1490         <CYAN>@@ -1,9 +1,9 @@<RESET>
1491         <CYAN>+<RESET><CYAN>long        line 6<RESET>
1492         <CYAN>+<RESET><CYAN>long        line 7<RESET>
1493         <CYAN>+<RESET><CYAN>long        line 8<RESET>
1494         <GREEN>+<RESET><GREEN>long li   ne 9<RESET>
1495          line 1<RESET>
1496          line 2<RESET>
1497          line 3<RESET>
1498          line 4<RESET>
1499          line 5<RESET>
1500         <MAGENTA>-long line 6<RESET>
1501         <MAGENTA>-long line 7<RESET>
1502         <MAGENTA>-long line 8<RESET>
1503         <RED>-long line 9<RESET>
1504         EOF
1505         test_cmp expected actual
1506 '
1507
1508 test_expect_success 'move detection ignoring whitespace at eol' '
1509         git reset --hard &&
1510         # Lines 6-9 have new eol whitespace, but 9 also has it in the middle
1511         q_to_tab <<-\EOF >lines.txt &&
1512         long line 6Q
1513         long line 7Q
1514         long line 8Q
1515         longQline 9Q
1516         line 1
1517         line 2
1518         line 3
1519         line 4
1520         line 5
1521         EOF
1522
1523         # avoid cluttering the output with complaints about our eol whitespace
1524         test_config core.whitespace -blank-at-eol &&
1525
1526         git diff HEAD --no-renames --color-moved --color |
1527                 grep -v "index" |
1528                 test_decode_color >actual &&
1529         cat <<-\EOF >expected &&
1530         <BOLD>diff --git a/lines.txt b/lines.txt<RESET>
1531         <BOLD>--- a/lines.txt<RESET>
1532         <BOLD>+++ b/lines.txt<RESET>
1533         <CYAN>@@ -1,9 +1,9 @@<RESET>
1534         <GREEN>+<RESET><GREEN>long line 6       <RESET>
1535         <GREEN>+<RESET><GREEN>long line 7       <RESET>
1536         <GREEN>+<RESET><GREEN>long line 8       <RESET>
1537         <GREEN>+<RESET><GREEN>long      line 9  <RESET>
1538          line 1<RESET>
1539          line 2<RESET>
1540          line 3<RESET>
1541          line 4<RESET>
1542          line 5<RESET>
1543         <RED>-long line 6<RESET>
1544         <RED>-long line 7<RESET>
1545         <RED>-long line 8<RESET>
1546         <RED>-long line 9<RESET>
1547         EOF
1548         test_cmp expected actual &&
1549
1550         git diff HEAD --no-renames --ignore-space-at-eol --color-moved --color |
1551                 grep -v "index" |
1552                 test_decode_color >actual &&
1553         cat <<-\EOF >expected &&
1554         <BOLD>diff --git a/lines.txt b/lines.txt<RESET>
1555         <BOLD>--- a/lines.txt<RESET>
1556         <BOLD>+++ b/lines.txt<RESET>
1557         <CYAN>@@ -1,9 +1,9 @@<RESET>
1558         <CYAN>+<RESET><CYAN>long line 6 <RESET>
1559         <CYAN>+<RESET><CYAN>long line 7 <RESET>
1560         <CYAN>+<RESET><CYAN>long line 8 <RESET>
1561         <GREEN>+<RESET><GREEN>long      line 9  <RESET>
1562          line 1<RESET>
1563          line 2<RESET>
1564          line 3<RESET>
1565          line 4<RESET>
1566          line 5<RESET>
1567         <MAGENTA>-long line 6<RESET>
1568         <MAGENTA>-long line 7<RESET>
1569         <MAGENTA>-long line 8<RESET>
1570         <RED>-long line 9<RESET>
1571         EOF
1572         test_cmp expected actual
1573 '
1574
1575 test_expect_success 'clean up whitespace-test colors' '
1576         git config --unset color.diff.oldMoved &&
1577         git config --unset color.diff.newMoved
1578 '
1579
1580 test_expect_success '--color-moved block at end of diff output respects MIN_ALNUM_COUNT' '
1581         git reset --hard &&
1582         >bar &&
1583         cat <<-\EOF >foo &&
1584         irrelevant_line
1585         line1
1586         EOF
1587         git add foo bar &&
1588         git commit -m x &&
1589
1590         cat <<-\EOF >bar &&
1591         line1
1592         EOF
1593         cat <<-\EOF >foo &&
1594         irrelevant_line
1595         EOF
1596
1597         git diff HEAD --color-moved=zebra --color --no-renames |
1598                 grep -v "index" |
1599                 test_decode_color >actual &&
1600         cat >expected <<-\EOF &&
1601         <BOLD>diff --git a/bar b/bar<RESET>
1602         <BOLD>--- a/bar<RESET>
1603         <BOLD>+++ b/bar<RESET>
1604         <CYAN>@@ -0,0 +1 @@<RESET>
1605         <GREEN>+<RESET><GREEN>line1<RESET>
1606         <BOLD>diff --git a/foo b/foo<RESET>
1607         <BOLD>--- a/foo<RESET>
1608         <BOLD>+++ b/foo<RESET>
1609         <CYAN>@@ -1,2 +1 @@<RESET>
1610          irrelevant_line<RESET>
1611         <RED>-line1<RESET>
1612         EOF
1613
1614         test_cmp expected actual
1615 '
1616
1617 test_expect_success '--color-moved respects MIN_ALNUM_COUNT' '
1618         git reset --hard &&
1619         cat <<-\EOF >foo &&
1620         nineteen chars 456789
1621         irrelevant_line
1622         twenty chars 234567890
1623         EOF
1624         >bar &&
1625         git add foo bar &&
1626         git commit -m x &&
1627
1628         cat <<-\EOF >foo &&
1629         irrelevant_line
1630         EOF
1631         cat <<-\EOF >bar &&
1632         twenty chars 234567890
1633         nineteen chars 456789
1634         EOF
1635
1636         git diff HEAD --color-moved=zebra --color --no-renames |
1637                 grep -v "index" |
1638                 test_decode_color >actual &&
1639         cat >expected <<-\EOF &&
1640         <BOLD>diff --git a/bar b/bar<RESET>
1641         <BOLD>--- a/bar<RESET>
1642         <BOLD>+++ b/bar<RESET>
1643         <CYAN>@@ -0,0 +1,2 @@<RESET>
1644         <BOLD;CYAN>+<RESET><BOLD;CYAN>twenty chars 234567890<RESET>
1645         <GREEN>+<RESET><GREEN>nineteen chars 456789<RESET>
1646         <BOLD>diff --git a/foo b/foo<RESET>
1647         <BOLD>--- a/foo<RESET>
1648         <BOLD>+++ b/foo<RESET>
1649         <CYAN>@@ -1,3 +1 @@<RESET>
1650         <RED>-nineteen chars 456789<RESET>
1651          irrelevant_line<RESET>
1652         <BOLD;MAGENTA>-twenty chars 234567890<RESET>
1653         EOF
1654
1655         test_cmp expected actual
1656 '
1657
1658 test_expect_success '--color-moved treats adjacent blocks as separate for MIN_ALNUM_COUNT' '
1659         git reset --hard &&
1660         cat <<-\EOF >foo &&
1661         7charsA
1662         irrelevant_line
1663         7charsB
1664         7charsC
1665         EOF
1666         >bar &&
1667         git add foo bar &&
1668         git commit -m x &&
1669
1670         cat <<-\EOF >foo &&
1671         irrelevant_line
1672         EOF
1673         cat <<-\EOF >bar &&
1674         7charsB
1675         7charsC
1676         7charsA
1677         EOF
1678
1679         git diff HEAD --color-moved=zebra --color --no-renames | grep -v "index" | test_decode_color >actual &&
1680         cat >expected <<-\EOF &&
1681         <BOLD>diff --git a/bar b/bar<RESET>
1682         <BOLD>--- a/bar<RESET>
1683         <BOLD>+++ b/bar<RESET>
1684         <CYAN>@@ -0,0 +1,3 @@<RESET>
1685         <GREEN>+<RESET><GREEN>7charsB<RESET>
1686         <GREEN>+<RESET><GREEN>7charsC<RESET>
1687         <GREEN>+<RESET><GREEN>7charsA<RESET>
1688         <BOLD>diff --git a/foo b/foo<RESET>
1689         <BOLD>--- a/foo<RESET>
1690         <BOLD>+++ b/foo<RESET>
1691         <CYAN>@@ -1,4 +1 @@<RESET>
1692         <RED>-7charsA<RESET>
1693          irrelevant_line<RESET>
1694         <RED>-7charsB<RESET>
1695         <RED>-7charsC<RESET>
1696         EOF
1697
1698         test_cmp expected actual
1699 '
1700
1701 test_expect_success 'move detection with submodules' '
1702         test_create_repo bananas &&
1703         echo ripe >bananas/recipe &&
1704         git -C bananas add recipe &&
1705         test_commit fruit &&
1706         test_commit -C bananas recipe &&
1707         git submodule add ./bananas &&
1708         git add bananas &&
1709         git commit -a -m "bananas are like a heavy library?" &&
1710         echo foul >bananas/recipe &&
1711         echo ripe >fruit.t &&
1712
1713         git diff --submodule=diff --color-moved --color >actual &&
1714
1715         # no move detection as the moved line is across repository boundaries.
1716         test_decode_color <actual >decoded_actual &&
1717         ! grep BGREEN decoded_actual &&
1718         ! grep BRED decoded_actual &&
1719
1720         # nor did we mess with it another way
1721         git diff --submodule=diff --color | test_decode_color >expect &&
1722         test_cmp expect decoded_actual
1723 '
1724
1725 test_done