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         >expect &&
  97         git diff -w >out &&
  98         test_cmp expect out &&
  99
 100         git diff -w -b >out &&
 101         test_cmp expect out &&
 102
 103         git diff -w --ignore-space-at-eol >out &&
 104         test_cmp expect out &&
 105
 106         git diff -w -b --ignore-space-at-eol >out &&
 107         test_cmp expect out &&
 108
 109         git diff -w --ignore-cr-at-eol >out &&
 110         test_cmp expect out &&
 111
 112         tr "Q_" "\015 " <<-\EOF >expect &&
 113         diff --git a/x b/x
 114         index d99af23..22d9f73 100644
 115         --- a/x
 116         +++ b/x
 117         @@ -1,6 +1,6 @@
 118         -whitespace at beginning
 119         +_      whitespace at beginning
 120          whitespace      change
 121         -whitespace in the middle
 122         +white space in the middle
 123          whitespace at end__
 124          unchanged line
 125          CR at end
 126         EOF
 127         git diff -b >out &&
 128         test_cmp expect out &&
 129
 130         git diff -b --ignore-space-at-eol >out &&
 131         test_cmp expect out &&
 132
 133         git diff -b --ignore-cr-at-eol >out &&
 134         test_cmp expect out &&
 135
 136         tr "Q_" "\015 " <<-\EOF >expect &&
 137         diff --git a/x b/x
 138         index d99af23..22d9f73 100644
 139         --- a/x
 140         +++ b/x
 141         @@ -1,6 +1,6 @@
 142         -whitespace at beginning
 143         -whitespace change
 144         -whitespace in the middle
 145         +_      whitespace at beginning
 146         +whitespace      change
 147         +white space in the middle
 148          whitespace at end__
 149          unchanged line
 150          CR at end
 151         EOF
 152         git diff --ignore-space-at-eol >out &&
 153         test_cmp expect out &&
 154
 155         git diff --ignore-space-at-eol --ignore-cr-at-eol >out &&
 156         test_cmp expect out &&
 157
 158         tr "Q_" "\015 " <<-\EOF >expect &&
 159         diff --git a/x b/x
 160         index_d99af23..22d9f73 100644
 161         --- a/x
 162         +++ b/x
 163         @@ -1,6 +1,6 @@
 164         -whitespace at beginning
 165         -whitespace change
 166         -whitespace in the middle
 167         -whitespace at end
 168         +_      whitespace at beginning
 169         +whitespace_    _change
 170         +white space in the middle
 171         +whitespace at end__
 172          unchanged line
 173          CR at end
 174         EOF
 175         git diff --ignore-cr-at-eol >out &&
 176         test_cmp expect out
 177 '
 178
 179 test_expect_success 'ignore-blank-lines: only new lines' '
 180         test_seq 5 >x &&
 181         git update-index x &&
 182         test_seq 5 | sed "/3/i\\
 183 " >x &&
 184         git diff --ignore-blank-lines >out &&
 185         >expect &&
 186         test_cmp expect out
 187 '
 188
 189 test_expect_success 'ignore-blank-lines: only new lines with space' '
 190         test_seq 5 >x &&
 191         git update-index x &&
 192         test_seq 5 | sed "/3/i\\
 193  " >x &&
 194         git diff -w --ignore-blank-lines >out &&
 195         >expect &&
 196         test_cmp expect out
 197 '
 198
 199 test_expect_success 'ignore-blank-lines: after change' '
 200         cat <<-\EOF >x &&
 201         1
 202         2
 203
 204         3
 205         4
 206         5
 207
 208         6
 209         7
 210         EOF
 211         git update-index x &&
 212         cat <<-\EOF >x &&
 213         change
 214
 215         1
 216         2
 217         3
 218         4
 219         5
 220         6
 221
 222         7
 223         EOF
 224         git diff --inter-hunk-context=100 --ignore-blank-lines >out.tmp &&
 225         cat <<-\EOF >expected &&
 226         diff --git a/x b/x
 227         --- a/x
 228         +++ b/x
 229         @@ -1,6 +1,7 @@
 230         +change
 231         +
 232          1
 233          2
 234         -
 235          3
 236          4
 237          5
 238         EOF
 239         compare_diff_patch expected out.tmp
 240 '
 241
 242 test_expect_success 'ignore-blank-lines: before change' '
 243         cat <<-\EOF >x &&
 244         1
 245         2
 246
 247         3
 248         4
 249         5
 250         6
 251         7
 252         EOF
 253         git update-index x &&
 254         cat <<-\EOF >x &&
 255
 256         1
 257         2
 258         3
 259         4
 260         5
 261
 262         6
 263         7
 264         change
 265         EOF
 266         git diff --inter-hunk-context=100 --ignore-blank-lines >out.tmp &&
 267         cat <<-\EOF >expected &&
 268         diff --git a/x b/x
 269         --- a/x
 270         +++ b/x
 271         @@ -4,5 +4,7 @@
 272          3
 273          4
 274          5
 275         +
 276          6
 277          7
 278         +change
 279         EOF
 280         compare_diff_patch expected out.tmp
 281 '
 282
 283 test_expect_success 'ignore-blank-lines: between changes' '
 284         cat <<-\EOF >x &&
 285         1
 286         2
 287         3
 288         4
 289         5
 290
 291
 292         6
 293         7
 294         8
 295         9
 296         10
 297         EOF
 298         git update-index x &&
 299         cat <<-\EOF >x &&
 300         change
 301         1
 302         2
 303
 304         3
 305         4
 306         5
 307         6
 308         7
 309         8
 310
 311         9
 312         10
 313         change
 314         EOF
 315         git diff --ignore-blank-lines >out.tmp &&
 316         cat <<-\EOF >expected &&
 317         diff --git a/x b/x
 318         --- a/x
 319         +++ b/x
 320         @@ -1,5 +1,7 @@
 321         +change
 322          1
 323          2
 324         +
 325          3
 326          4
 327          5
 328         @@ -8,5 +8,7 @@
 329          6
 330          7
 331          8
 332         +
 333          9
 334          10
 335         +change
 336         EOF
 337         compare_diff_patch expected out.tmp
 338 '
 339
 340 test_expect_success 'ignore-blank-lines: between changes (with interhunkctx)' '
 341         test_seq 10 >x &&
 342         git update-index x &&
 343         cat <<-\EOF >x &&
 344         change
 345         1
 346         2
 347
 348         3
 349         4
 350         5
 351
 352         6
 353         7
 354         8
 355         9
 356
 357         10
 358         change
 359         EOF
 360         git diff --inter-hunk-context=2 --ignore-blank-lines >out.tmp &&
 361         cat <<-\EOF >expected &&
 362         diff --git a/x b/x
 363         --- a/x
 364         +++ b/x
 365         @@ -1,10 +1,15 @@
 366         +change
 367          1
 368          2
 369         +
 370          3
 371          4
 372          5
 373         +
 374          6
 375          7
 376          8
 377          9
 378         +
 379          10
 380         +change
 381         EOF
 382         compare_diff_patch expected out.tmp
 383 '
 384
 385 test_expect_success 'ignore-blank-lines: scattered spaces' '
 386         test_seq 10 >x &&
 387         git update-index x &&
 388         cat <<-\EOF >x &&
 389         change
 390         1
 391         2
 392         3
 393
 394         4
 395
 396         5
 397
 398         6
 399
 400
 401         7
 402
 403         8
 404         9
 405         10
 406         change
 407         EOF
 408         git diff --inter-hunk-context=4 --ignore-blank-lines >out.tmp &&
 409         cat <<-\EOF >expected &&
 410         diff --git a/x b/x
 411         --- a/x
 412         +++ b/x
 413         @@ -1,3 +1,4 @@
 414         +change
 415          1
 416          2
 417          3
 418         @@ -8,3 +15,4 @@
 419          8
 420          9
 421          10
 422         +change
 423         EOF
 424         compare_diff_patch expected out.tmp
 425 '
 426
 427 test_expect_success 'ignore-blank-lines: spaces coalesce' '
 428         test_seq 6 >x &&
 429         git update-index x &&
 430         cat <<-\EOF >x &&
 431         change
 432         1
 433         2
 434         3
 435
 436         4
 437
 438         5
 439
 440         6
 441         change
 442         EOF
 443         git diff --inter-hunk-context=4 --ignore-blank-lines >out.tmp &&
 444         cat <<-\EOF >expected &&
 445         diff --git a/x b/x
 446         --- a/x
 447         +++ b/x
 448         @@ -1,6 +1,11 @@
 449         +change
 450          1
 451          2
 452          3
 453         +
 454          4
 455         +
 456          5
 457         +
 458          6
 459         +change
 460         EOF
 461         compare_diff_patch expected out.tmp
 462 '
 463
 464 test_expect_success 'ignore-blank-lines: mix changes and blank lines' '
 465         test_seq 16 >x &&
 466         git update-index x &&
 467         cat <<-\EOF >x &&
 468         change
 469         1
 470         2
 471
 472         3
 473         4
 474         5
 475         change
 476         6
 477         7
 478         8
 479
 480         9
 481         10
 482         11
 483         change
 484         12
 485         13
 486         14
 487
 488         15
 489         16
 490         change
 491         EOF
 492         git diff --ignore-blank-lines >out.tmp &&
 493         cat <<-\EOF >expected &&
 494         diff --git a/x b/x
 495         --- a/x
 496         +++ b/x
 497         @@ -1,8 +1,11 @@
 498         +change
 499          1
 500          2
 501         +
 502          3
 503          4
 504          5
 505         +change
 506          6
 507          7
 508          8
 509         @@ -9,8 +13,11 @@
 510          9
 511          10
 512          11
 513         +change
 514          12
 515          13
 516          14
 517         +
 518          15
 519          16
 520         +change
 521         EOF
 522         compare_diff_patch expected out.tmp
 523 '
 524
 525 test_expect_success 'check mixed spaces and tabs in indent' '
 526         # This is indented with SP HT SP.
 527         echo "   foo();" >x &&
 528         git diff --check | grep "space before tab in indent"
 529 '
 530
 531 test_expect_success 'check mixed tabs and spaces in indent' '
 532         # This is indented with HT SP HT.
 533         echo "          foo();" >x &&
 534         git diff --check | grep "space before tab in indent"
 535 '
 536
 537 test_expect_success 'check with no whitespace errors' '
 538         git commit -m "snapshot" &&
 539         echo "foo();" >x &&
 540         git diff --check
 541 '
 542
 543 test_expect_success 'check with trailing whitespace' '
 544         echo "foo(); " >x &&
 545         test_must_fail git diff --check
 546 '
 547
 548 test_expect_success 'check with space before tab in indent' '
 549         # indent has space followed by hard tab
 550         echo "  foo();" >x &&
 551         test_must_fail git diff --check
 552 '
 553
 554 test_expect_success '--check and --exit-code are not exclusive' '
 555         git checkout x &&
 556         git diff --check --exit-code
 557 '
 558
 559 test_expect_success '--check and --quiet are not exclusive' '
 560         git diff --check --quiet
 561 '
 562
 563 test_expect_success 'check staged with no whitespace errors' '
 564         echo "foo();" >x &&
 565         git add x &&
 566         git diff --cached --check
 567 '
 568
 569 test_expect_success 'check staged with trailing whitespace' '
 570         echo "foo(); " >x &&
 571         git add x &&
 572         test_must_fail git diff --cached --check
 573 '
 574
 575 test_expect_success 'check staged with space before tab in indent' '
 576         # indent has space followed by hard tab
 577         echo "  foo();" >x &&
 578         git add x &&
 579         test_must_fail git diff --cached --check
 580 '
 581
 582 test_expect_success 'check with no whitespace errors (diff-index)' '
 583         echo "foo();" >x &&
 584         git add x &&
 585         git diff-index --check HEAD
 586 '
 587
 588 test_expect_success 'check with trailing whitespace (diff-index)' '
 589         echo "foo(); " >x &&
 590         git add x &&
 591         test_must_fail git diff-index --check HEAD
 592 '
 593
 594 test_expect_success 'check with space before tab in indent (diff-index)' '
 595         # indent has space followed by hard tab
 596         echo "  foo();" >x &&
 597         git add x &&
 598         test_must_fail git diff-index --check HEAD
 599 '
 600
 601 test_expect_success 'check staged with no whitespace errors (diff-index)' '
 602         echo "foo();" >x &&
 603         git add x &&
 604         git diff-index --cached --check HEAD
 605 '
 606
 607 test_expect_success 'check staged with trailing whitespace (diff-index)' '
 608         echo "foo(); " >x &&
 609         git add x &&
 610         test_must_fail git diff-index --cached --check HEAD
 611 '
 612
 613 test_expect_success 'check staged with space before tab in indent (diff-index)' '
 614         # indent has space followed by hard tab
 615         echo "  foo();" >x &&
 616         git add x &&
 617         test_must_fail git diff-index --cached --check HEAD
 618 '
 619
 620 test_expect_success 'check with no whitespace errors (diff-tree)' '
 621         echo "foo();" >x &&
 622         git commit -m "new commit" x &&
 623         git diff-tree --check HEAD^ HEAD
 624 '
 625
 626 test_expect_success 'check with trailing whitespace (diff-tree)' '
 627         echo "foo(); " >x &&
 628         git commit -m "another commit" x &&
 629         test_must_fail git diff-tree --check HEAD^ HEAD
 630 '
 631
 632 test_expect_success 'check with space before tab in indent (diff-tree)' '
 633         # indent has space followed by hard tab
 634         echo "  foo();" >x &&
 635         git commit -m "yet another" x &&
 636         test_must_fail git diff-tree --check HEAD^ HEAD
 637 '
 638
 639 test_expect_success 'check with ignored trailing whitespace attr (diff-tree)' '
 640         test_when_finished "git reset --hard HEAD^" &&
 641
 642         # create a whitespace error that should be ignored
 643         echo "* -whitespace" >.gitattributes &&
 644         git add .gitattributes &&
 645         echo "foo(); " >x &&
 646         git add x &&
 647         git commit -m "add trailing space" &&
 648
 649         # with a worktree diff-tree ignores the whitespace error
 650         git diff-tree --root --check HEAD &&
 651
 652         # without a worktree diff-tree still ignores the whitespace error
 653         git -C .git diff-tree --root --check HEAD
 654 '
 655
 656 test_expect_success 'check trailing whitespace (trailing-space: off)' '
 657         git config core.whitespace "-trailing-space" &&
 658         echo "foo ();   " >x &&
 659         git diff --check
 660 '
 661
 662 test_expect_success 'check trailing whitespace (trailing-space: on)' '
 663         git config core.whitespace "trailing-space" &&
 664         echo "foo ();   " >x &&
 665         test_must_fail git diff --check
 666 '
 667
 668 test_expect_success 'check space before tab in indent (space-before-tab: off)' '
 669         # indent contains space followed by HT
 670         git config core.whitespace "-space-before-tab" &&
 671         echo "  foo ();" >x &&
 672         git diff --check
 673 '
 674
 675 test_expect_success 'check space before tab in indent (space-before-tab: on)' '
 676         # indent contains space followed by HT
 677         git config core.whitespace "space-before-tab" &&
 678         echo "  foo ();   " >x &&
 679         test_must_fail git diff --check
 680 '
 681
 682 test_expect_success 'check spaces as indentation (indent-with-non-tab: off)' '
 683         git config core.whitespace "-indent-with-non-tab" &&
 684         echo "        foo ();" >x &&
 685         git diff --check
 686 '
 687
 688 test_expect_success 'check spaces as indentation (indent-with-non-tab: on)' '
 689         git config core.whitespace "indent-with-non-tab" &&
 690         echo "        foo ();" >x &&
 691         test_must_fail git diff --check
 692 '
 693
 694 test_expect_success 'ditto, but tabwidth=9' '
 695         git config core.whitespace "indent-with-non-tab,tabwidth=9" &&
 696         git diff --check
 697 '
 698
 699 test_expect_success 'check tabs and spaces as indentation (indent-with-non-tab: on)' '
 700         git config core.whitespace "indent-with-non-tab" &&
 701         echo "                  foo ();" >x &&
 702         test_must_fail git diff --check
 703 '
 704
 705 test_expect_success 'ditto, but tabwidth=10' '
 706         git config core.whitespace "indent-with-non-tab,tabwidth=10" &&
 707         test_must_fail git diff --check
 708 '
 709
 710 test_expect_success 'ditto, but tabwidth=20' '
 711         git config core.whitespace "indent-with-non-tab,tabwidth=20" &&
 712         git diff --check
 713 '
 714
 715 test_expect_success 'check tabs as indentation (tab-in-indent: off)' '
 716         git config core.whitespace "-tab-in-indent" &&
 717         echo "  foo ();" >x &&
 718         git diff --check
 719 '
 720
 721 test_expect_success 'check tabs as indentation (tab-in-indent: on)' '
 722         git config core.whitespace "tab-in-indent" &&
 723         echo "  foo ();" >x &&
 724         test_must_fail git diff --check
 725 '
 726
 727 test_expect_success 'check tabs and spaces as indentation (tab-in-indent: on)' '
 728         git config core.whitespace "tab-in-indent" &&
 729         echo "                  foo ();" >x &&
 730         test_must_fail git diff --check
 731 '
 732
 733 test_expect_success 'ditto, but tabwidth=1 (must be irrelevant)' '
 734         git config core.whitespace "tab-in-indent,tabwidth=1" &&
 735         test_must_fail git diff --check
 736 '
 737
 738 test_expect_success 'check tab-in-indent and indent-with-non-tab conflict' '
 739         git config core.whitespace "tab-in-indent,indent-with-non-tab" &&
 740         echo "foo ();" >x &&
 741         test_must_fail git diff --check
 742 '
 743
 744 test_expect_success 'check tab-in-indent excluded from wildcard whitespace attribute' '
 745         git config --unset core.whitespace &&
 746         echo "x whitespace" >.gitattributes &&
 747         echo "    foo ();" >x &&
 748         git diff --check &&
 749         rm -f .gitattributes
 750 '
 751
 752 test_expect_success 'line numbers in --check output are correct' '
 753         echo "" >x &&
 754         echo "foo(); " >>x &&
 755         git diff --check | grep "x:2:"
 756 '
 757
 758 test_expect_success 'checkdiff detects new trailing blank lines (1)' '
 759         echo "foo();" >x &&
 760         echo "" >>x &&
 761         git diff --check | grep "new blank line"
 762 '
 763
 764 test_expect_success 'checkdiff detects new trailing blank lines (2)' '
 765         { echo a; echo b; echo; echo; } >x &&
 766         git add x &&
 767         { echo a; echo; echo; echo; echo; } >x &&
 768         git diff --check | grep "new blank line"
 769 '
 770
 771 test_expect_success 'checkdiff allows new blank lines' '
 772         git checkout x &&
 773         mv x y &&
 774         (
 775                 echo "/* This is new */" &&
 776                 echo "" &&
 777                 cat y
 778         ) >x &&
 779         git diff --check
 780 '
 781
 782 cat <<EOF >expect
 783 EOF
 784 test_expect_success 'whitespace-only changes not reported' '
 785         git reset --hard &&
 786         echo >x "hello world" &&
 787         git add x &&
 788         git commit -m "hello 1" &&
 789         echo >x "hello  world" &&
 790         git diff -b >actual &&
 791         test_cmp expect actual
 792 '
 793
 794 cat <<EOF >expect
 795 diff --git a/x b/z
 796 similarity index NUM%
 797 rename from x
 798 rename to z
 799 index 380c32a..a97b785 100644
 800 EOF
 801 test_expect_success 'whitespace-only changes reported across renames' '
 802         git reset --hard &&
 803         for i in 1 2 3 4 5 6 7 8 9; do echo "$i$i$i$i$i$i"; done >x &&
 804         git add x &&
 805         git commit -m "base" &&
 806         sed -e "5s/^/ /" x >z &&
 807         git rm x &&
 808         git add z &&
 809         git diff -w -M --cached |
 810         sed -e "/^similarity index /s/[0-9][0-9]*/NUM/" >actual &&
 811         test_cmp expect actual
 812 '
 813
 814 cat >expected <<\EOF
 815 diff --git a/empty b/void
 816 similarity index 100%
 817 rename from empty
 818 rename to void
 819 EOF
 820
 821 test_expect_success 'rename empty' '
 822         git reset --hard &&
 823         >empty &&
 824         git add empty &&
 825         git commit -m empty &&
 826         git mv empty void &&
 827         git diff -w --cached -M >current &&
 828         test_cmp expected current
 829 '
 830
 831 test_expect_success 'combined diff with autocrlf conversion' '
 832
 833         git reset --hard &&
 834         echo >x hello &&
 835         git commit -m "one side" x &&
 836         git checkout HEAD^ &&
 837         echo >x goodbye &&
 838         git commit -m "the other side" x &&
 839         git config core.autocrlf true &&
 840         test_must_fail git merge master &&
 841
 842         git diff | sed -e "1,/^@@@/d" >actual &&
 843         ! grep "^-" actual
 844
 845 '
 846
 847 # Start testing the colored format for whitespace checks
 848
 849 test_expect_success 'setup diff colors' '
 850         git config color.diff.plain normal &&
 851         git config color.diff.meta bold &&
 852         git config color.diff.frag cyan &&
 853         git config color.diff.func normal &&
 854         git config color.diff.old red &&
 855         git config color.diff.new green &&
 856         git config color.diff.commit yellow &&
 857         git config color.diff.whitespace blue &&
 858
 859         git config core.autocrlf false
 860 '
 861
 862 test_expect_success 'diff that introduces a line with only tabs' '
 863         git config core.whitespace blank-at-eol &&
 864         git reset --hard &&
 865         echo "test" >x &&
 866         git commit -m "initial" x &&
 867         echo "{NTN}" | tr "NT" "\n\t" >>x &&
 868         git diff --color | test_decode_color >current &&
 869
 870         cat >expected <<-\EOF &&
 871         <BOLD>diff --git a/x b/x<RESET>
 872         <BOLD>index 9daeafb..2874b91 100644<RESET>
 873         <BOLD>--- a/x<RESET>
 874         <BOLD>+++ b/x<RESET>
 875         <CYAN>@@ -1 +1,4 @@<RESET>
 876          test<RESET>
 877         <GREEN>+<RESET><GREEN>{<RESET>
 878         <GREEN>+<RESET><BLUE>   <RESET>
 879         <GREEN>+<RESET><GREEN>}<RESET>
 880         EOF
 881
 882         test_cmp expected current
 883 '
 884
 885 test_expect_success 'diff that introduces and removes ws breakages' '
 886         git reset --hard &&
 887         {
 888                 echo "0. blank-at-eol " &&
 889                 echo "1. blank-at-eol "
 890         } >x &&
 891         git commit -a --allow-empty -m preimage &&
 892         {
 893                 echo "0. blank-at-eol " &&
 894                 echo "1. still-blank-at-eol " &&
 895                 echo "2. and a new line "
 896         } >x &&
 897
 898         git diff --color |
 899         test_decode_color >current &&
 900
 901         cat >expected <<-\EOF &&
 902         <BOLD>diff --git a/x b/x<RESET>
 903         <BOLD>index d0233a2..700886e 100644<RESET>
 904         <BOLD>--- a/x<RESET>
 905         <BOLD>+++ b/x<RESET>
 906         <CYAN>@@ -1,2 +1,3 @@<RESET>
 907          0. blank-at-eol <RESET>
 908         <RED>-1. blank-at-eol <RESET>
 909         <GREEN>+<RESET><GREEN>1. still-blank-at-eol<RESET><BLUE> <RESET>
 910         <GREEN>+<RESET><GREEN>2. and a new line<RESET><BLUE> <RESET>
 911         EOF
 912
 913         test_cmp expected current
 914 '
 915
 916 test_expect_success 'ws-error-highlight test setup' '
 917
 918         git reset --hard &&
 919         {
 920                 echo "0. blank-at-eol " &&
 921                 echo "1. blank-at-eol "
 922         } >x &&
 923         git commit -a --allow-empty -m preimage &&
 924         {
 925                 echo "0. blank-at-eol " &&
 926                 echo "1. still-blank-at-eol " &&
 927                 echo "2. and a new line "
 928         } >x &&
 929
 930         cat >expect.default-old <<-\EOF &&
 931         <BOLD>diff --git a/x b/x<RESET>
 932         <BOLD>index d0233a2..700886e 100644<RESET>
 933         <BOLD>--- a/x<RESET>
 934         <BOLD>+++ b/x<RESET>
 935         <CYAN>@@ -1,2 +1,3 @@<RESET>
 936          0. blank-at-eol <RESET>
 937         <RED>-<RESET><RED>1. blank-at-eol<RESET><BLUE> <RESET>
 938         <GREEN>+<RESET><GREEN>1. still-blank-at-eol<RESET><BLUE> <RESET>
 939         <GREEN>+<RESET><GREEN>2. and a new line<RESET><BLUE> <RESET>
 940         EOF
 941
 942         cat >expect.all <<-\EOF &&
 943         <BOLD>diff --git a/x b/x<RESET>
 944         <BOLD>index d0233a2..700886e 100644<RESET>
 945         <BOLD>--- a/x<RESET>
 946         <BOLD>+++ b/x<RESET>
 947         <CYAN>@@ -1,2 +1,3 @@<RESET>
 948          <RESET>0. blank-at-eol<RESET><BLUE> <RESET>
 949         <RED>-<RESET><RED>1. blank-at-eol<RESET><BLUE> <RESET>
 950         <GREEN>+<RESET><GREEN>1. still-blank-at-eol<RESET><BLUE> <RESET>
 951         <GREEN>+<RESET><GREEN>2. and a new line<RESET><BLUE> <RESET>
 952         EOF
 953
 954         cat >expect.none <<-\EOF
 955         <BOLD>diff --git a/x b/x<RESET>
 956         <BOLD>index d0233a2..700886e 100644<RESET>
 957         <BOLD>--- a/x<RESET>
 958         <BOLD>+++ b/x<RESET>
 959         <CYAN>@@ -1,2 +1,3 @@<RESET>
 960          0. blank-at-eol <RESET>
 961         <RED>-1. blank-at-eol <RESET>
 962         <GREEN>+1. still-blank-at-eol <RESET>
 963         <GREEN>+2. and a new line <RESET>
 964         EOF
 965
 966 '
 967
 968 test_expect_success 'test --ws-error-highlight option' '
 969
 970         git diff --color --ws-error-highlight=default,old |
 971         test_decode_color >current &&
 972         test_cmp expect.default-old current &&
 973
 974         git diff --color --ws-error-highlight=all |
 975         test_decode_color >current &&
 976         test_cmp expect.all current &&
 977
 978         git diff --color --ws-error-highlight=none |
 979         test_decode_color >current &&
 980         test_cmp expect.none current
 981
 982 '
 983
 984 test_expect_success 'test diff.wsErrorHighlight config' '
 985
 986         git -c diff.wsErrorHighlight=default,old diff --color |
 987         test_decode_color >current &&
 988         test_cmp expect.default-old current &&
 989
 990         git -c diff.wsErrorHighlight=all diff --color |
 991         test_decode_color >current &&
 992         test_cmp expect.all current &&
 993
 994         git -c diff.wsErrorHighlight=none diff --color |
 995         test_decode_color >current &&
 996         test_cmp expect.none current
 997
 998 '
 999
1000 test_expect_success 'option overrides diff.wsErrorHighlight' '
1001
1002         git -c diff.wsErrorHighlight=none \
1003                 diff --color --ws-error-highlight=default,old |
1004         test_decode_color >current &&
1005         test_cmp expect.default-old current &&
1006
1007         git -c diff.wsErrorHighlight=default \
1008                 diff --color --ws-error-highlight=all |
1009         test_decode_color >current &&
1010         test_cmp expect.all current &&
1011
1012         git -c diff.wsErrorHighlight=all \
1013                 diff --color --ws-error-highlight=none |
1014         test_decode_color >current &&
1015         test_cmp expect.none current
1016
1017 '
1018
1019 test_expect_success 'detect moved code, complete file' '
1020         git reset --hard &&
1021         cat <<-\EOF >test.c &&
1022         #include<stdio.h>
1023         main()
1024         {
1025         printf("Hello World");
1026         }
1027         EOF
1028         git add test.c &&
1029         git commit -m "add main function" &&
1030         git mv test.c main.c &&
1031         test_config color.diff.oldMoved "normal red" &&
1032         test_config color.diff.newMoved "normal green" &&
1033         git diff HEAD --color-moved=zebra --color --no-renames | test_decode_color >actual &&
1034         cat >expected <<-\EOF &&
1035         <BOLD>diff --git a/main.c b/main.c<RESET>
1036         <BOLD>new file mode 100644<RESET>
1037         <BOLD>index 0000000..a986c57<RESET>
1038         <BOLD>--- /dev/null<RESET>
1039         <BOLD>+++ b/main.c<RESET>
1040         <CYAN>@@ -0,0 +1,5 @@<RESET>
1041         <BGREEN>+<RESET><BGREEN>#include<stdio.h><RESET>
1042         <BGREEN>+<RESET><BGREEN>main()<RESET>
1043         <BGREEN>+<RESET><BGREEN>{<RESET>
1044         <BGREEN>+<RESET><BGREEN>printf("Hello World");<RESET>
1045         <BGREEN>+<RESET><BGREEN>}<RESET>
1046         <BOLD>diff --git a/test.c b/test.c<RESET>
1047         <BOLD>deleted file mode 100644<RESET>
1048         <BOLD>index a986c57..0000000<RESET>
1049         <BOLD>--- a/test.c<RESET>
1050         <BOLD>+++ /dev/null<RESET>
1051         <CYAN>@@ -1,5 +0,0 @@<RESET>
1052         <BRED>-#include<stdio.h><RESET>
1053         <BRED>-main()<RESET>
1054         <BRED>-{<RESET>
1055         <BRED>-printf("Hello World");<RESET>
1056         <BRED>-}<RESET>
1057         EOF
1058
1059         test_cmp expected actual
1060 '
1061
1062 test_expect_success 'detect malicious moved code, inside file' '
1063         test_config color.diff.oldMoved "normal red" &&
1064         test_config color.diff.newMoved "normal green" &&
1065         test_config color.diff.oldMovedAlternative "blue" &&
1066         test_config color.diff.newMovedAlternative "yellow" &&
1067         git reset --hard &&
1068         cat <<-\EOF >main.c &&
1069                 #include<stdio.h>
1070                 int stuff()
1071                 {
1072                         printf("Hello ");
1073                         printf("World\n");
1074                 }
1075
1076                 int secure_foo(struct user *u)
1077                 {
1078                         if (!u->is_allowed_foo)
1079                                 return;
1080                         foo(u);
1081                 }
1082
1083                 int main()
1084                 {
1085                         foo();
1086                 }
1087         EOF
1088         cat <<-\EOF >test.c &&
1089                 #include<stdio.h>
1090                 int bar()
1091                 {
1092                         printf("Hello World, but different\n");
1093                 }
1094
1095                 int another_function()
1096                 {
1097                         bar();
1098                 }
1099         EOF
1100         git add main.c test.c &&
1101         git commit -m "add main and test file" &&
1102         cat <<-\EOF >main.c &&
1103                 #include<stdio.h>
1104                 int stuff()
1105                 {
1106                         printf("Hello ");
1107                         printf("World\n");
1108                 }
1109
1110                 int main()
1111                 {
1112                         foo();
1113                 }
1114         EOF
1115         cat <<-\EOF >test.c &&
1116                 #include<stdio.h>
1117                 int bar()
1118                 {
1119                         printf("Hello World, but different\n");
1120                 }
1121
1122                 int secure_foo(struct user *u)
1123                 {
1124                         foo(u);
1125                         if (!u->is_allowed_foo)
1126                                 return;
1127                 }
1128
1129                 int another_function()
1130                 {
1131                         bar();
1132                 }
1133         EOF
1134         git diff HEAD --no-renames --color-moved=zebra --color | test_decode_color >actual &&
1135         cat <<-\EOF >expected &&
1136         <BOLD>diff --git a/main.c b/main.c<RESET>
1137         <BOLD>index 27a619c..7cf9336 100644<RESET>
1138         <BOLD>--- a/main.c<RESET>
1139         <BOLD>+++ b/main.c<RESET>
1140         <CYAN>@@ -5,13 +5,6 @@<RESET> <RESET>printf("Hello ");<RESET>
1141          printf("World\n");<RESET>
1142          }<RESET>
1143          <RESET>
1144         <BRED>-int secure_foo(struct user *u)<RESET>
1145         <BRED>-{<RESET>
1146         <BLUE>-if (!u->is_allowed_foo)<RESET>
1147         <BLUE>-return;<RESET>
1148         <RED>-foo(u);<RESET>
1149         <RED>-}<RESET>
1150         <RED>-<RESET>
1151          int main()<RESET>
1152          {<RESET>
1153          foo();<RESET>
1154         <BOLD>diff --git a/test.c b/test.c<RESET>
1155         <BOLD>index 1dc1d85..2bedec9 100644<RESET>
1156         <BOLD>--- a/test.c<RESET>
1157         <BOLD>+++ b/test.c<RESET>
1158         <CYAN>@@ -4,6 +4,13 @@<RESET> <RESET>int bar()<RESET>
1159          printf("Hello World, but different\n");<RESET>
1160          }<RESET>
1161          <RESET>
1162         <BGREEN>+<RESET><BGREEN>int secure_foo(struct user *u)<RESET>
1163         <BGREEN>+<RESET><BGREEN>{<RESET>
1164         <GREEN>+<RESET><GREEN>foo(u);<RESET>
1165         <BGREEN>+<RESET><BGREEN>if (!u->is_allowed_foo)<RESET>
1166         <BGREEN>+<RESET><BGREEN>return;<RESET>
1167         <GREEN>+<RESET><GREEN>}<RESET>
1168         <GREEN>+<RESET>
1169          int another_function()<RESET>
1170          {<RESET>
1171          bar();<RESET>
1172         EOF
1173
1174         test_cmp expected actual
1175 '
1176
1177 test_expect_success 'plain moved code, inside file' '
1178         test_config color.diff.oldMoved "normal red" &&
1179         test_config color.diff.newMoved "normal green" &&
1180         test_config color.diff.oldMovedAlternative "blue" &&
1181         test_config color.diff.newMovedAlternative "yellow" &&
1182         # needs previous test as setup
1183         git diff HEAD --no-renames --color-moved=plain --color | test_decode_color >actual &&
1184         cat <<-\EOF >expected &&
1185         <BOLD>diff --git a/main.c b/main.c<RESET>
1186         <BOLD>index 27a619c..7cf9336 100644<RESET>
1187         <BOLD>--- a/main.c<RESET>
1188         <BOLD>+++ b/main.c<RESET>
1189         <CYAN>@@ -5,13 +5,6 @@<RESET> <RESET>printf("Hello ");<RESET>
1190          printf("World\n");<RESET>
1191          }<RESET>
1192          <RESET>
1193         <BRED>-int secure_foo(struct user *u)<RESET>
1194         <BRED>-{<RESET>
1195         <BRED>-if (!u->is_allowed_foo)<RESET>
1196         <BRED>-return;<RESET>
1197         <BRED>-foo(u);<RESET>
1198         <BRED>-}<RESET>
1199         <BRED>-<RESET>
1200          int main()<RESET>
1201          {<RESET>
1202          foo();<RESET>
1203         <BOLD>diff --git a/test.c b/test.c<RESET>
1204         <BOLD>index 1dc1d85..2bedec9 100644<RESET>
1205         <BOLD>--- a/test.c<RESET>
1206         <BOLD>+++ b/test.c<RESET>
1207         <CYAN>@@ -4,6 +4,13 @@<RESET> <RESET>int bar()<RESET>
1208          printf("Hello World, but different\n");<RESET>
1209          }<RESET>
1210          <RESET>
1211         <BGREEN>+<RESET><BGREEN>int secure_foo(struct user *u)<RESET>
1212         <BGREEN>+<RESET><BGREEN>{<RESET>
1213         <BGREEN>+<RESET><BGREEN>foo(u);<RESET>
1214         <BGREEN>+<RESET><BGREEN>if (!u->is_allowed_foo)<RESET>
1215         <BGREEN>+<RESET><BGREEN>return;<RESET>
1216         <BGREEN>+<RESET><BGREEN>}<RESET>
1217         <BGREEN>+<RESET>
1218          int another_function()<RESET>
1219          {<RESET>
1220          bar();<RESET>
1221         EOF
1222
1223         test_cmp expected actual
1224 '
1225
1226 test_expect_success 'detect permutations inside moved code -- dimmed-zebra' '
1227         git reset --hard &&
1228         cat <<-\EOF >lines.txt &&
1229                 long line 1
1230                 long line 2
1231                 long line 3
1232                 line 4
1233                 line 5
1234                 line 6
1235                 line 7
1236                 line 8
1237                 line 9
1238                 line 10
1239                 line 11
1240                 line 12
1241                 line 13
1242                 long line 14
1243                 long line 15
1244                 long line 16
1245         EOF
1246         git add lines.txt &&
1247         git commit -m "add poetry" &&
1248         cat <<-\EOF >lines.txt &&
1249                 line 4
1250                 line 5
1251                 line 6
1252                 line 7
1253                 line 8
1254                 line 9
1255                 long line 1
1256                 long line 2
1257                 long line 3
1258                 long line 14
1259                 long line 15
1260                 long line 16
1261                 line 10
1262                 line 11
1263                 line 12
1264                 line 13
1265         EOF
1266         test_config color.diff.oldMoved "magenta" &&
1267         test_config color.diff.newMoved "cyan" &&
1268         test_config color.diff.oldMovedAlternative "blue" &&
1269         test_config color.diff.newMovedAlternative "yellow" &&
1270         test_config color.diff.oldMovedDimmed "normal magenta" &&
1271         test_config color.diff.newMovedDimmed "normal cyan" &&
1272         test_config color.diff.oldMovedAlternativeDimmed "normal blue" &&
1273         test_config color.diff.newMovedAlternativeDimmed "normal yellow" &&
1274         git diff HEAD --no-renames --color-moved=dimmed-zebra --color |
1275                 grep -v "index" |
1276                 test_decode_color >actual &&
1277         cat <<-\EOF >expected &&
1278         <BOLD>diff --git a/lines.txt b/lines.txt<RESET>
1279         <BOLD>--- a/lines.txt<RESET>
1280         <BOLD>+++ b/lines.txt<RESET>
1281         <CYAN>@@ -1,16 +1,16 @@<RESET>
1282         <BMAGENTA>-long line 1<RESET>
1283         <BMAGENTA>-long line 2<RESET>
1284         <BMAGENTA>-long line 3<RESET>
1285          line 4<RESET>
1286          line 5<RESET>
1287          line 6<RESET>
1288          line 7<RESET>
1289          line 8<RESET>
1290          line 9<RESET>
1291         <BCYAN>+<RESET><BCYAN>long line 1<RESET>
1292         <BCYAN>+<RESET><BCYAN>long line 2<RESET>
1293         <CYAN>+<RESET><CYAN>long line 3<RESET>
1294         <YELLOW>+<RESET><YELLOW>long line 14<RESET>
1295         <BYELLOW>+<RESET><BYELLOW>long line 15<RESET>
1296         <BYELLOW>+<RESET><BYELLOW>long line 16<RESET>
1297          line 10<RESET>
1298          line 11<RESET>
1299          line 12<RESET>
1300          line 13<RESET>
1301         <BMAGENTA>-long line 14<RESET>
1302         <BMAGENTA>-long line 15<RESET>
1303         <BMAGENTA>-long line 16<RESET>
1304         EOF
1305         test_cmp expected actual
1306 '
1307
1308 test_expect_success 'cmd option assumes configured colored-moved' '
1309         test_config color.diff.oldMoved "magenta" &&
1310         test_config color.diff.newMoved "cyan" &&
1311         test_config color.diff.oldMovedAlternative "blue" &&
1312         test_config color.diff.newMovedAlternative "yellow" &&
1313         test_config color.diff.oldMovedDimmed "normal magenta" &&
1314         test_config color.diff.newMovedDimmed "normal cyan" &&
1315         test_config color.diff.oldMovedAlternativeDimmed "normal blue" &&
1316         test_config color.diff.newMovedAlternativeDimmed "normal yellow" &&
1317         test_config diff.colorMoved zebra &&
1318         git diff HEAD --no-renames --color-moved --color |
1319                 grep -v "index" |
1320                 test_decode_color >actual &&
1321         cat <<-\EOF >expected &&
1322         <BOLD>diff --git a/lines.txt b/lines.txt<RESET>
1323         <BOLD>--- a/lines.txt<RESET>
1324         <BOLD>+++ b/lines.txt<RESET>
1325         <CYAN>@@ -1,16 +1,16 @@<RESET>
1326         <MAGENTA>-long line 1<RESET>
1327         <MAGENTA>-long line 2<RESET>
1328         <MAGENTA>-long line 3<RESET>
1329          line 4<RESET>
1330          line 5<RESET>
1331          line 6<RESET>
1332          line 7<RESET>
1333          line 8<RESET>
1334          line 9<RESET>
1335         <CYAN>+<RESET><CYAN>long line 1<RESET>
1336         <CYAN>+<RESET><CYAN>long line 2<RESET>
1337         <CYAN>+<RESET><CYAN>long line 3<RESET>
1338         <YELLOW>+<RESET><YELLOW>long line 14<RESET>
1339         <YELLOW>+<RESET><YELLOW>long line 15<RESET>
1340         <YELLOW>+<RESET><YELLOW>long line 16<RESET>
1341          line 10<RESET>
1342          line 11<RESET>
1343          line 12<RESET>
1344          line 13<RESET>
1345         <MAGENTA>-long line 14<RESET>
1346         <MAGENTA>-long line 15<RESET>
1347         <MAGENTA>-long line 16<RESET>
1348         EOF
1349         test_cmp expected actual
1350 '
1351
1352 test_expect_success 'no effect from --color-moved with --word-diff' '
1353         cat <<-\EOF >text.txt &&
1354         Lorem Ipsum is simply dummy text of the printing and typesetting industry.
1355         EOF
1356         git add text.txt &&
1357         git commit -a -m "clean state" &&
1358         cat <<-\EOF >text.txt &&
1359         simply Lorem Ipsum dummy is text of the typesetting and printing industry.
1360         EOF
1361         git diff --color-moved --word-diff >actual &&
1362         git diff --word-diff >expect &&
1363         test_cmp expect actual
1364 '
1365
1366 test_expect_success 'set up whitespace tests' '
1367         git reset --hard &&
1368         # Note that these lines have no leading or trailing whitespace.
1369         cat <<-\EOF >lines.txt &&
1370         line 1
1371         line 2
1372         line 3
1373         line 4
1374         line 5
1375         long line 6
1376         long line 7
1377         long line 8
1378         long line 9
1379         EOF
1380         git add lines.txt &&
1381         git commit -m "add poetry" &&
1382         git config color.diff.oldMoved "magenta" &&
1383         git config color.diff.newMoved "cyan"
1384 '
1385
1386 test_expect_success 'move detection ignoring whitespace ' '
1387         q_to_tab <<-\EOF >lines.txt &&
1388         Qlong line 6
1389         Qlong line 7
1390         Qlong line 8
1391         Qchanged long line 9
1392         line 1
1393         line 2
1394         line 3
1395         line 4
1396         line 5
1397         EOF
1398         git diff HEAD --no-renames --color-moved --color |
1399                 grep -v "index" |
1400                 test_decode_color >actual &&
1401         cat <<-\EOF >expected &&
1402         <BOLD>diff --git a/lines.txt b/lines.txt<RESET>
1403         <BOLD>--- a/lines.txt<RESET>
1404         <BOLD>+++ b/lines.txt<RESET>
1405         <CYAN>@@ -1,9 +1,9 @@<RESET>
1406         <GREEN>+<RESET> <GREEN>long line 6<RESET>
1407         <GREEN>+<RESET> <GREEN>long line 7<RESET>
1408         <GREEN>+<RESET> <GREEN>long line 8<RESET>
1409         <GREEN>+<RESET> <GREEN>changed long line 9<RESET>
1410          line 1<RESET>
1411          line 2<RESET>
1412          line 3<RESET>
1413          line 4<RESET>
1414          line 5<RESET>
1415         <RED>-long line 6<RESET>
1416         <RED>-long line 7<RESET>
1417         <RED>-long line 8<RESET>
1418         <RED>-long line 9<RESET>
1419         EOF
1420         test_cmp expected actual &&
1421
1422         git diff HEAD --no-renames -w --color-moved --color |
1423                 grep -v "index" |
1424                 test_decode_color >actual &&
1425         cat <<-\EOF >expected &&
1426         <BOLD>diff --git a/lines.txt b/lines.txt<RESET>
1427         <BOLD>--- a/lines.txt<RESET>
1428         <BOLD>+++ b/lines.txt<RESET>
1429         <CYAN>@@ -1,9 +1,9 @@<RESET>
1430         <CYAN>+<RESET>  <CYAN>long line 6<RESET>
1431         <CYAN>+<RESET>  <CYAN>long line 7<RESET>
1432         <CYAN>+<RESET>  <CYAN>long line 8<RESET>
1433         <GREEN>+<RESET> <GREEN>changed long line 9<RESET>
1434          line 1<RESET>
1435          line 2<RESET>
1436          line 3<RESET>
1437          line 4<RESET>
1438          line 5<RESET>
1439         <MAGENTA>-long line 6<RESET>
1440         <MAGENTA>-long line 7<RESET>
1441         <MAGENTA>-long line 8<RESET>
1442         <RED>-long line 9<RESET>
1443         EOF
1444         test_cmp expected actual
1445 '
1446
1447 test_expect_success 'move detection ignoring whitespace changes' '
1448         git reset --hard &&
1449         # Lines 6-8 have a space change, but 9 is new whitespace
1450         q_to_tab <<-\EOF >lines.txt &&
1451         longQline 6
1452         longQline 7
1453         longQline 8
1454         long liQne 9
1455         line 1
1456         line 2
1457         line 3
1458         line 4
1459         line 5
1460         EOF
1461
1462         git diff HEAD --no-renames --color-moved --color |
1463                 grep -v "index" |
1464                 test_decode_color >actual &&
1465         cat <<-\EOF >expected &&
1466         <BOLD>diff --git a/lines.txt b/lines.txt<RESET>
1467         <BOLD>--- a/lines.txt<RESET>
1468         <BOLD>+++ b/lines.txt<RESET>
1469         <CYAN>@@ -1,9 +1,9 @@<RESET>
1470         <GREEN>+<RESET><GREEN>long      line 6<RESET>
1471         <GREEN>+<RESET><GREEN>long      line 7<RESET>
1472         <GREEN>+<RESET><GREEN>long      line 8<RESET>
1473         <GREEN>+<RESET><GREEN>long li   ne 9<RESET>
1474          line 1<RESET>
1475          line 2<RESET>
1476          line 3<RESET>
1477          line 4<RESET>
1478          line 5<RESET>
1479         <RED>-long line 6<RESET>
1480         <RED>-long line 7<RESET>
1481         <RED>-long line 8<RESET>
1482         <RED>-long line 9<RESET>
1483         EOF
1484         test_cmp expected actual &&
1485
1486         git diff HEAD --no-renames -b --color-moved --color |
1487                 grep -v "index" |
1488                 test_decode_color >actual &&
1489         cat <<-\EOF >expected &&
1490         <BOLD>diff --git a/lines.txt b/lines.txt<RESET>
1491         <BOLD>--- a/lines.txt<RESET>
1492         <BOLD>+++ b/lines.txt<RESET>
1493         <CYAN>@@ -1,9 +1,9 @@<RESET>
1494         <CYAN>+<RESET><CYAN>long        line 6<RESET>
1495         <CYAN>+<RESET><CYAN>long        line 7<RESET>
1496         <CYAN>+<RESET><CYAN>long        line 8<RESET>
1497         <GREEN>+<RESET><GREEN>long li   ne 9<RESET>
1498          line 1<RESET>
1499          line 2<RESET>
1500          line 3<RESET>
1501          line 4<RESET>
1502          line 5<RESET>
1503         <MAGENTA>-long line 6<RESET>
1504         <MAGENTA>-long line 7<RESET>
1505         <MAGENTA>-long line 8<RESET>
1506         <RED>-long line 9<RESET>
1507         EOF
1508         test_cmp expected actual
1509 '
1510
1511 test_expect_success 'move detection ignoring whitespace at eol' '
1512         git reset --hard &&
1513         # Lines 6-9 have new eol whitespace, but 9 also has it in the middle
1514         q_to_tab <<-\EOF >lines.txt &&
1515         long line 6Q
1516         long line 7Q
1517         long line 8Q
1518         longQline 9Q
1519         line 1
1520         line 2
1521         line 3
1522         line 4
1523         line 5
1524         EOF
1525
1526         # avoid cluttering the output with complaints about our eol whitespace
1527         test_config core.whitespace -blank-at-eol &&
1528
1529         git diff HEAD --no-renames --color-moved --color |
1530                 grep -v "index" |
1531                 test_decode_color >actual &&
1532         cat <<-\EOF >expected &&
1533         <BOLD>diff --git a/lines.txt b/lines.txt<RESET>
1534         <BOLD>--- a/lines.txt<RESET>
1535         <BOLD>+++ b/lines.txt<RESET>
1536         <CYAN>@@ -1,9 +1,9 @@<RESET>
1537         <GREEN>+<RESET><GREEN>long line 6       <RESET>
1538         <GREEN>+<RESET><GREEN>long line 7       <RESET>
1539         <GREEN>+<RESET><GREEN>long line 8       <RESET>
1540         <GREEN>+<RESET><GREEN>long      line 9  <RESET>
1541          line 1<RESET>
1542          line 2<RESET>
1543          line 3<RESET>
1544          line 4<RESET>
1545          line 5<RESET>
1546         <RED>-long line 6<RESET>
1547         <RED>-long line 7<RESET>
1548         <RED>-long line 8<RESET>
1549         <RED>-long line 9<RESET>
1550         EOF
1551         test_cmp expected actual &&
1552
1553         git diff HEAD --no-renames --ignore-space-at-eol --color-moved --color |
1554                 grep -v "index" |
1555                 test_decode_color >actual &&
1556         cat <<-\EOF >expected &&
1557         <BOLD>diff --git a/lines.txt b/lines.txt<RESET>
1558         <BOLD>--- a/lines.txt<RESET>
1559         <BOLD>+++ b/lines.txt<RESET>
1560         <CYAN>@@ -1,9 +1,9 @@<RESET>
1561         <CYAN>+<RESET><CYAN>long line 6 <RESET>
1562         <CYAN>+<RESET><CYAN>long line 7 <RESET>
1563         <CYAN>+<RESET><CYAN>long line 8 <RESET>
1564         <GREEN>+<RESET><GREEN>long      line 9  <RESET>
1565          line 1<RESET>
1566          line 2<RESET>
1567          line 3<RESET>
1568          line 4<RESET>
1569          line 5<RESET>
1570         <MAGENTA>-long line 6<RESET>
1571         <MAGENTA>-long line 7<RESET>
1572         <MAGENTA>-long line 8<RESET>
1573         <RED>-long line 9<RESET>
1574         EOF
1575         test_cmp expected actual
1576 '
1577
1578 test_expect_success 'clean up whitespace-test colors' '
1579         git config --unset color.diff.oldMoved &&
1580         git config --unset color.diff.newMoved
1581 '
1582
1583 test_expect_success '--color-moved block at end of diff output respects MIN_ALNUM_COUNT' '
1584         git reset --hard &&
1585         >bar &&
1586         cat <<-\EOF >foo &&
1587         irrelevant_line
1588         line1
1589         EOF
1590         git add foo bar &&
1591         git commit -m x &&
1592
1593         cat <<-\EOF >bar &&
1594         line1
1595         EOF
1596         cat <<-\EOF >foo &&
1597         irrelevant_line
1598         EOF
1599
1600         git diff HEAD --color-moved=zebra --color --no-renames |
1601                 grep -v "index" |
1602                 test_decode_color >actual &&
1603         cat >expected <<-\EOF &&
1604         <BOLD>diff --git a/bar b/bar<RESET>
1605         <BOLD>--- a/bar<RESET>
1606         <BOLD>+++ b/bar<RESET>
1607         <CYAN>@@ -0,0 +1 @@<RESET>
1608         <GREEN>+<RESET><GREEN>line1<RESET>
1609         <BOLD>diff --git a/foo b/foo<RESET>
1610         <BOLD>--- a/foo<RESET>
1611         <BOLD>+++ b/foo<RESET>
1612         <CYAN>@@ -1,2 +1 @@<RESET>
1613          irrelevant_line<RESET>
1614         <RED>-line1<RESET>
1615         EOF
1616
1617         test_cmp expected actual
1618 '
1619
1620 test_expect_success '--color-moved respects MIN_ALNUM_COUNT' '
1621         git reset --hard &&
1622         cat <<-\EOF >foo &&
1623         nineteen chars 456789
1624         irrelevant_line
1625         twenty chars 234567890
1626         EOF
1627         >bar &&
1628         git add foo bar &&
1629         git commit -m x &&
1630
1631         cat <<-\EOF >foo &&
1632         irrelevant_line
1633         EOF
1634         cat <<-\EOF >bar &&
1635         twenty chars 234567890
1636         nineteen chars 456789
1637         EOF
1638
1639         git diff HEAD --color-moved=zebra --color --no-renames |
1640                 grep -v "index" |
1641                 test_decode_color >actual &&
1642         cat >expected <<-\EOF &&
1643         <BOLD>diff --git a/bar b/bar<RESET>
1644         <BOLD>--- a/bar<RESET>
1645         <BOLD>+++ b/bar<RESET>
1646         <CYAN>@@ -0,0 +1,2 @@<RESET>
1647         <BOLD;CYAN>+<RESET><BOLD;CYAN>twenty chars 234567890<RESET>
1648         <GREEN>+<RESET><GREEN>nineteen chars 456789<RESET>
1649         <BOLD>diff --git a/foo b/foo<RESET>
1650         <BOLD>--- a/foo<RESET>
1651         <BOLD>+++ b/foo<RESET>
1652         <CYAN>@@ -1,3 +1 @@<RESET>
1653         <RED>-nineteen chars 456789<RESET>
1654          irrelevant_line<RESET>
1655         <BOLD;MAGENTA>-twenty chars 234567890<RESET>
1656         EOF
1657
1658         test_cmp expected actual
1659 '
1660
1661 test_expect_success '--color-moved treats adjacent blocks as separate for MIN_ALNUM_COUNT' '
1662         git reset --hard &&
1663         cat <<-\EOF >foo &&
1664         7charsA
1665         irrelevant_line
1666         7charsB
1667         7charsC
1668         EOF
1669         >bar &&
1670         git add foo bar &&
1671         git commit -m x &&
1672
1673         cat <<-\EOF >foo &&
1674         irrelevant_line
1675         EOF
1676         cat <<-\EOF >bar &&
1677         7charsB
1678         7charsC
1679         7charsA
1680         EOF
1681
1682         git diff HEAD --color-moved=zebra --color --no-renames | grep -v "index" | test_decode_color >actual &&
1683         cat >expected <<-\EOF &&
1684         <BOLD>diff --git a/bar b/bar<RESET>
1685         <BOLD>--- a/bar<RESET>
1686         <BOLD>+++ b/bar<RESET>
1687         <CYAN>@@ -0,0 +1,3 @@<RESET>
1688         <GREEN>+<RESET><GREEN>7charsB<RESET>
1689         <GREEN>+<RESET><GREEN>7charsC<RESET>
1690         <GREEN>+<RESET><GREEN>7charsA<RESET>
1691         <BOLD>diff --git a/foo b/foo<RESET>
1692         <BOLD>--- a/foo<RESET>
1693         <BOLD>+++ b/foo<RESET>
1694         <CYAN>@@ -1,4 +1 @@<RESET>
1695         <RED>-7charsA<RESET>
1696          irrelevant_line<RESET>
1697         <RED>-7charsB<RESET>
1698         <RED>-7charsC<RESET>
1699         EOF
1700
1701         test_cmp expected actual
1702 '
1703
1704 test_expect_success 'move detection with submodules' '
1705         test_create_repo bananas &&
1706         echo ripe >bananas/recipe &&
1707         git -C bananas add recipe &&
1708         test_commit fruit &&
1709         test_commit -C bananas recipe &&
1710         git submodule add ./bananas &&
1711         git add bananas &&
1712         git commit -a -m "bananas are like a heavy library?" &&
1713         echo foul >bananas/recipe &&
1714         echo ripe >fruit.t &&
1715
1716         git diff --submodule=diff --color-moved --color >actual &&
1717
1718         # no move detection as the moved line is across repository boundaries.
1719         test_decode_color <actual >decoded_actual &&
1720         ! grep BGREEN decoded_actual &&
1721         ! grep BRED decoded_actual &&
1722
1723         # nor did we mess with it another way
1724         git diff --submodule=diff --color | test_decode_color >expect &&
1725         test_cmp expect decoded_actual
1726 '
1727
1728 test_done