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
 110         tr "Q_" "\015 " <<-\EOF >expect &&
 111         diff --git a/x b/x
 112         index d99af23..22d9f73 100644
 113         --- a/x
 114         +++ b/x
 115         @@ -1,6 +1,6 @@
 116         -whitespace at beginning
 117         +_      whitespace at beginning
 118          whitespace      change
 119         -whitespace in the middle
 120         +white space in the middle
 121          whitespace at end__
 122          unchanged line
 123          CR at end
 124         EOF
 125         git diff -b >out &&
 126         test_cmp expect out &&
 127
 128         git diff -b --ignore-space-at-eol >out &&
 129         test_cmp expect out &&
 130
 131         tr "Q_" "\015 " <<-\EOF >expect &&
 132         diff --git a/x b/x
 133         index d99af23..22d9f73 100644
 134         --- a/x
 135         +++ b/x
 136         @@ -1,6 +1,6 @@
 137         -whitespace at beginning
 138         -whitespace change
 139         -whitespace in the middle
 140         +_      whitespace at beginning
 141         +whitespace      change
 142         +white space in the middle
 143          whitespace at end__
 144          unchanged line
 145          CR at end
 146         EOF
 147         git diff --ignore-space-at-eol >out &&
 148         test_cmp expect out
 149 '
 150
 151 test_expect_success 'ignore-blank-lines: only new lines' '
 152         test_seq 5 >x &&
 153         git update-index x &&
 154         test_seq 5 | sed "/3/i\\
 155 " >x &&
 156         git diff --ignore-blank-lines >out &&
 157         >expect &&
 158         test_cmp out expect
 159 '
 160
 161 test_expect_success 'ignore-blank-lines: only new lines with space' '
 162         test_seq 5 >x &&
 163         git update-index x &&
 164         test_seq 5 | sed "/3/i\\
 165  " >x &&
 166         git diff -w --ignore-blank-lines >out &&
 167         >expect &&
 168         test_cmp out expect
 169 '
 170
 171 test_expect_success 'ignore-blank-lines: after change' '
 172         cat <<-\EOF >x &&
 173         1
 174         2
 175
 176         3
 177         4
 178         5
 179
 180         6
 181         7
 182         EOF
 183         git update-index x &&
 184         cat <<-\EOF >x &&
 185         change
 186
 187         1
 188         2
 189         3
 190         4
 191         5
 192         6
 193
 194         7
 195         EOF
 196         git diff --inter-hunk-context=100 --ignore-blank-lines >out.tmp &&
 197         cat <<-\EOF >expected &&
 198         diff --git a/x b/x
 199         --- a/x
 200         +++ b/x
 201         @@ -1,6 +1,7 @@
 202         +change
 203         +
 204          1
 205          2
 206         -
 207          3
 208          4
 209          5
 210         EOF
 211         compare_diff_patch expected out.tmp
 212 '
 213
 214 test_expect_success 'ignore-blank-lines: before change' '
 215         cat <<-\EOF >x &&
 216         1
 217         2
 218
 219         3
 220         4
 221         5
 222         6
 223         7
 224         EOF
 225         git update-index x &&
 226         cat <<-\EOF >x &&
 227
 228         1
 229         2
 230         3
 231         4
 232         5
 233
 234         6
 235         7
 236         change
 237         EOF
 238         git diff --inter-hunk-context=100 --ignore-blank-lines >out.tmp &&
 239         cat <<-\EOF >expected &&
 240         diff --git a/x b/x
 241         --- a/x
 242         +++ b/x
 243         @@ -4,5 +4,7 @@
 244          3
 245          4
 246          5
 247         +
 248          6
 249          7
 250         +change
 251         EOF
 252         compare_diff_patch expected out.tmp
 253 '
 254
 255 test_expect_success 'ignore-blank-lines: between changes' '
 256         cat <<-\EOF >x &&
 257         1
 258         2
 259         3
 260         4
 261         5
 262
 263
 264         6
 265         7
 266         8
 267         9
 268         10
 269         EOF
 270         git update-index x &&
 271         cat <<-\EOF >x &&
 272         change
 273         1
 274         2
 275
 276         3
 277         4
 278         5
 279         6
 280         7
 281         8
 282
 283         9
 284         10
 285         change
 286         EOF
 287         git diff --ignore-blank-lines >out.tmp &&
 288         cat <<-\EOF >expected &&
 289         diff --git a/x b/x
 290         --- a/x
 291         +++ b/x
 292         @@ -1,5 +1,7 @@
 293         +change
 294          1
 295          2
 296         +
 297          3
 298          4
 299          5
 300         @@ -8,5 +8,7 @@
 301          6
 302          7
 303          8
 304         +
 305          9
 306          10
 307         +change
 308         EOF
 309         compare_diff_patch expected out.tmp
 310 '
 311
 312 test_expect_success 'ignore-blank-lines: between changes (with interhunkctx)' '
 313         test_seq 10 >x &&
 314         git update-index x &&
 315         cat <<-\EOF >x &&
 316         change
 317         1
 318         2
 319
 320         3
 321         4
 322         5
 323
 324         6
 325         7
 326         8
 327         9
 328
 329         10
 330         change
 331         EOF
 332         git diff --inter-hunk-context=2 --ignore-blank-lines >out.tmp &&
 333         cat <<-\EOF >expected &&
 334         diff --git a/x b/x
 335         --- a/x
 336         +++ b/x
 337         @@ -1,10 +1,15 @@
 338         +change
 339          1
 340          2
 341         +
 342          3
 343          4
 344          5
 345         +
 346          6
 347          7
 348          8
 349          9
 350         +
 351          10
 352         +change
 353         EOF
 354         compare_diff_patch expected out.tmp
 355 '
 356
 357 test_expect_success 'ignore-blank-lines: scattered spaces' '
 358         test_seq 10 >x &&
 359         git update-index x &&
 360         cat <<-\EOF >x &&
 361         change
 362         1
 363         2
 364         3
 365
 366         4
 367
 368         5
 369
 370         6
 371
 372
 373         7
 374
 375         8
 376         9
 377         10
 378         change
 379         EOF
 380         git diff --inter-hunk-context=4 --ignore-blank-lines >out.tmp &&
 381         cat <<-\EOF >expected &&
 382         diff --git a/x b/x
 383         --- a/x
 384         +++ b/x
 385         @@ -1,3 +1,4 @@
 386         +change
 387          1
 388          2
 389          3
 390         @@ -8,3 +15,4 @@
 391          8
 392          9
 393          10
 394         +change
 395         EOF
 396         compare_diff_patch expected out.tmp
 397 '
 398
 399 test_expect_success 'ignore-blank-lines: spaces coalesce' '
 400         test_seq 6 >x &&
 401         git update-index x &&
 402         cat <<-\EOF >x &&
 403         change
 404         1
 405         2
 406         3
 407
 408         4
 409
 410         5
 411
 412         6
 413         change
 414         EOF
 415         git diff --inter-hunk-context=4 --ignore-blank-lines >out.tmp &&
 416         cat <<-\EOF >expected &&
 417         diff --git a/x b/x
 418         --- a/x
 419         +++ b/x
 420         @@ -1,6 +1,11 @@
 421         +change
 422          1
 423          2
 424          3
 425         +
 426          4
 427         +
 428          5
 429         +
 430          6
 431         +change
 432         EOF
 433         compare_diff_patch expected out.tmp
 434 '
 435
 436 test_expect_success 'ignore-blank-lines: mix changes and blank lines' '
 437         test_seq 16 >x &&
 438         git update-index x &&
 439         cat <<-\EOF >x &&
 440         change
 441         1
 442         2
 443
 444         3
 445         4
 446         5
 447         change
 448         6
 449         7
 450         8
 451
 452         9
 453         10
 454         11
 455         change
 456         12
 457         13
 458         14
 459
 460         15
 461         16
 462         change
 463         EOF
 464         git diff --ignore-blank-lines >out.tmp &&
 465         cat <<-\EOF >expected &&
 466         diff --git a/x b/x
 467         --- a/x
 468         +++ b/x
 469         @@ -1,8 +1,11 @@
 470         +change
 471          1
 472          2
 473         +
 474          3
 475          4
 476          5
 477         +change
 478          6
 479          7
 480          8
 481         @@ -9,8 +13,11 @@
 482          9
 483          10
 484          11
 485         +change
 486          12
 487          13
 488          14
 489         +
 490          15
 491          16
 492         +change
 493         EOF
 494         compare_diff_patch expected out.tmp
 495 '
 496
 497 test_expect_success 'check mixed spaces and tabs in indent' '
 498         # This is indented with SP HT SP.
 499         echo "   foo();" >x &&
 500         git diff --check | grep "space before tab in indent"
 501 '
 502
 503 test_expect_success 'check mixed tabs and spaces in indent' '
 504         # This is indented with HT SP HT.
 505         echo "          foo();" >x &&
 506         git diff --check | grep "space before tab in indent"
 507 '
 508
 509 test_expect_success 'check with no whitespace errors' '
 510         git commit -m "snapshot" &&
 511         echo "foo();" >x &&
 512         git diff --check
 513 '
 514
 515 test_expect_success 'check with trailing whitespace' '
 516         echo "foo(); " >x &&
 517         test_must_fail git diff --check
 518 '
 519
 520 test_expect_success 'check with space before tab in indent' '
 521         # indent has space followed by hard tab
 522         echo "  foo();" >x &&
 523         test_must_fail git diff --check
 524 '
 525
 526 test_expect_success '--check and --exit-code are not exclusive' '
 527         git checkout x &&
 528         git diff --check --exit-code
 529 '
 530
 531 test_expect_success '--check and --quiet are not exclusive' '
 532         git diff --check --quiet
 533 '
 534
 535 test_expect_success 'check staged with no whitespace errors' '
 536         echo "foo();" >x &&
 537         git add x &&
 538         git diff --cached --check
 539 '
 540
 541 test_expect_success 'check staged with trailing whitespace' '
 542         echo "foo(); " >x &&
 543         git add x &&
 544         test_must_fail git diff --cached --check
 545 '
 546
 547 test_expect_success 'check staged with space before tab in indent' '
 548         # indent has space followed by hard tab
 549         echo "  foo();" >x &&
 550         git add x &&
 551         test_must_fail git diff --cached --check
 552 '
 553
 554 test_expect_success 'check with no whitespace errors (diff-index)' '
 555         echo "foo();" >x &&
 556         git add x &&
 557         git diff-index --check HEAD
 558 '
 559
 560 test_expect_success 'check with trailing whitespace (diff-index)' '
 561         echo "foo(); " >x &&
 562         git add x &&
 563         test_must_fail git diff-index --check HEAD
 564 '
 565
 566 test_expect_success 'check with space before tab in indent (diff-index)' '
 567         # indent has space followed by hard tab
 568         echo "  foo();" >x &&
 569         git add x &&
 570         test_must_fail git diff-index --check HEAD
 571 '
 572
 573 test_expect_success 'check staged with no whitespace errors (diff-index)' '
 574         echo "foo();" >x &&
 575         git add x &&
 576         git diff-index --cached --check HEAD
 577 '
 578
 579 test_expect_success 'check staged with trailing whitespace (diff-index)' '
 580         echo "foo(); " >x &&
 581         git add x &&
 582         test_must_fail git diff-index --cached --check HEAD
 583 '
 584
 585 test_expect_success 'check staged with space before tab in indent (diff-index)' '
 586         # indent has space followed by hard tab
 587         echo "  foo();" >x &&
 588         git add x &&
 589         test_must_fail git diff-index --cached --check HEAD
 590 '
 591
 592 test_expect_success 'check with no whitespace errors (diff-tree)' '
 593         echo "foo();" >x &&
 594         git commit -m "new commit" x &&
 595         git diff-tree --check HEAD^ HEAD
 596 '
 597
 598 test_expect_success 'check with trailing whitespace (diff-tree)' '
 599         echo "foo(); " >x &&
 600         git commit -m "another commit" x &&
 601         test_must_fail git diff-tree --check HEAD^ HEAD
 602 '
 603
 604 test_expect_success 'check with space before tab in indent (diff-tree)' '
 605         # indent has space followed by hard tab
 606         echo "  foo();" >x &&
 607         git commit -m "yet another" x &&
 608         test_must_fail git diff-tree --check HEAD^ HEAD
 609 '
 610
 611 test_expect_success 'check trailing whitespace (trailing-space: off)' '
 612         git config core.whitespace "-trailing-space" &&
 613         echo "foo ();   " >x &&
 614         git diff --check
 615 '
 616
 617 test_expect_success 'check trailing whitespace (trailing-space: on)' '
 618         git config core.whitespace "trailing-space" &&
 619         echo "foo ();   " >x &&
 620         test_must_fail git diff --check
 621 '
 622
 623 test_expect_success 'check space before tab in indent (space-before-tab: off)' '
 624         # indent contains space followed by HT
 625         git config core.whitespace "-space-before-tab" &&
 626         echo "  foo ();" >x &&
 627         git diff --check
 628 '
 629
 630 test_expect_success 'check space before tab in indent (space-before-tab: on)' '
 631         # indent contains space followed by HT
 632         git config core.whitespace "space-before-tab" &&
 633         echo "  foo ();   " >x &&
 634         test_must_fail git diff --check
 635 '
 636
 637 test_expect_success 'check spaces as indentation (indent-with-non-tab: off)' '
 638         git config core.whitespace "-indent-with-non-tab" &&
 639         echo "        foo ();" >x &&
 640         git diff --check
 641 '
 642
 643 test_expect_success 'check spaces as indentation (indent-with-non-tab: on)' '
 644         git config core.whitespace "indent-with-non-tab" &&
 645         echo "        foo ();" >x &&
 646         test_must_fail git diff --check
 647 '
 648
 649 test_expect_success 'ditto, but tabwidth=9' '
 650         git config core.whitespace "indent-with-non-tab,tabwidth=9" &&
 651         git diff --check
 652 '
 653
 654 test_expect_success 'check tabs and spaces as indentation (indent-with-non-tab: on)' '
 655         git config core.whitespace "indent-with-non-tab" &&
 656         echo "                  foo ();" >x &&
 657         test_must_fail git diff --check
 658 '
 659
 660 test_expect_success 'ditto, but tabwidth=10' '
 661         git config core.whitespace "indent-with-non-tab,tabwidth=10" &&
 662         test_must_fail git diff --check
 663 '
 664
 665 test_expect_success 'ditto, but tabwidth=20' '
 666         git config core.whitespace "indent-with-non-tab,tabwidth=20" &&
 667         git diff --check
 668 '
 669
 670 test_expect_success 'check tabs as indentation (tab-in-indent: off)' '
 671         git config core.whitespace "-tab-in-indent" &&
 672         echo "  foo ();" >x &&
 673         git diff --check
 674 '
 675
 676 test_expect_success 'check tabs as indentation (tab-in-indent: on)' '
 677         git config core.whitespace "tab-in-indent" &&
 678         echo "  foo ();" >x &&
 679         test_must_fail git diff --check
 680 '
 681
 682 test_expect_success 'check tabs and spaces as indentation (tab-in-indent: on)' '
 683         git config core.whitespace "tab-in-indent" &&
 684         echo "                  foo ();" >x &&
 685         test_must_fail git diff --check
 686 '
 687
 688 test_expect_success 'ditto, but tabwidth=1 (must be irrelevant)' '
 689         git config core.whitespace "tab-in-indent,tabwidth=1" &&
 690         test_must_fail git diff --check
 691 '
 692
 693 test_expect_success 'check tab-in-indent and indent-with-non-tab conflict' '
 694         git config core.whitespace "tab-in-indent,indent-with-non-tab" &&
 695         echo "foo ();" >x &&
 696         test_must_fail git diff --check
 697 '
 698
 699 test_expect_success 'check tab-in-indent excluded from wildcard whitespace attribute' '
 700         git config --unset core.whitespace &&
 701         echo "x whitespace" >.gitattributes &&
 702         echo "    foo ();" >x &&
 703         git diff --check &&
 704         rm -f .gitattributes
 705 '
 706
 707 test_expect_success 'line numbers in --check output are correct' '
 708         echo "" >x &&
 709         echo "foo(); " >>x &&
 710         git diff --check | grep "x:2:"
 711 '
 712
 713 test_expect_success 'checkdiff detects new trailing blank lines (1)' '
 714         echo "foo();" >x &&
 715         echo "" >>x &&
 716         git diff --check | grep "new blank line"
 717 '
 718
 719 test_expect_success 'checkdiff detects new trailing blank lines (2)' '
 720         { echo a; echo b; echo; echo; } >x &&
 721         git add x &&
 722         { echo a; echo; echo; echo; echo; } >x &&
 723         git diff --check | grep "new blank line"
 724 '
 725
 726 test_expect_success 'checkdiff allows new blank lines' '
 727         git checkout x &&
 728         mv x y &&
 729         (
 730                 echo "/* This is new */" &&
 731                 echo "" &&
 732                 cat y
 733         ) >x &&
 734         git diff --check
 735 '
 736
 737 cat <<EOF >expect
 738 EOF
 739 test_expect_success 'whitespace-only changes not reported' '
 740         git reset --hard &&
 741         echo >x "hello world" &&
 742         git add x &&
 743         git commit -m "hello 1" &&
 744         echo >x "hello  world" &&
 745         git diff -b >actual &&
 746         test_cmp expect actual
 747 '
 748
 749 cat <<EOF >expect
 750 diff --git a/x b/z
 751 similarity index NUM%
 752 rename from x
 753 rename to z
 754 index 380c32a..a97b785 100644
 755 EOF
 756 test_expect_success 'whitespace-only changes reported across renames' '
 757         git reset --hard &&
 758         for i in 1 2 3 4 5 6 7 8 9; do echo "$i$i$i$i$i$i"; done >x &&
 759         git add x &&
 760         git commit -m "base" &&
 761         sed -e "5s/^/ /" x >z &&
 762         git rm x &&
 763         git add z &&
 764         git diff -w -M --cached |
 765         sed -e "/^similarity index /s/[0-9][0-9]*/NUM/" >actual &&
 766         test_cmp expect actual
 767 '
 768
 769 cat >expected <<\EOF
 770 diff --git a/empty b/void
 771 similarity index 100%
 772 rename from empty
 773 rename to void
 774 EOF
 775
 776 test_expect_success 'rename empty' '
 777         git reset --hard &&
 778         >empty &&
 779         git add empty &&
 780         git commit -m empty &&
 781         git mv empty void &&
 782         git diff -w --cached -M >current &&
 783         test_cmp expected current
 784 '
 785
 786 test_expect_success 'combined diff with autocrlf conversion' '
 787
 788         git reset --hard &&
 789         echo >x hello &&
 790         git commit -m "one side" x &&
 791         git checkout HEAD^ &&
 792         echo >x goodbye &&
 793         git commit -m "the other side" x &&
 794         git config core.autocrlf true &&
 795         test_must_fail git merge master &&
 796
 797         git diff | sed -e "1,/^@@@/d" >actual &&
 798         ! grep "^-" actual
 799
 800 '
 801
 802 # Start testing the colored format for whitespace checks
 803
 804 test_expect_success 'setup diff colors' '
 805         git config color.diff always &&
 806         git config color.diff.plain normal &&
 807         git config color.diff.meta bold &&
 808         git config color.diff.frag cyan &&
 809         git config color.diff.func normal &&
 810         git config color.diff.old red &&
 811         git config color.diff.new green &&
 812         git config color.diff.commit yellow &&
 813         git config color.diff.whitespace blue &&
 814
 815         git config core.autocrlf false
 816 '
 817
 818 test_expect_success 'diff that introduces a line with only tabs' '
 819         git config core.whitespace blank-at-eol &&
 820         git reset --hard &&
 821         echo "test" >x &&
 822         git commit -m "initial" x &&
 823         echo "{NTN}" | tr "NT" "\n\t" >>x &&
 824         git diff --color | test_decode_color >current &&
 825
 826         cat >expected <<-\EOF &&
 827         <BOLD>diff --git a/x b/x<RESET>
 828         <BOLD>index 9daeafb..2874b91 100644<RESET>
 829         <BOLD>--- a/x<RESET>
 830         <BOLD>+++ b/x<RESET>
 831         <CYAN>@@ -1 +1,4 @@<RESET>
 832          test<RESET>
 833         <GREEN>+<RESET><GREEN>{<RESET>
 834         <GREEN>+<RESET><BLUE>   <RESET>
 835         <GREEN>+<RESET><GREEN>}<RESET>
 836         EOF
 837
 838         test_cmp expected current
 839 '
 840
 841 test_expect_success 'diff that introduces and removes ws breakages' '
 842         git reset --hard &&
 843         {
 844                 echo "0. blank-at-eol " &&
 845                 echo "1. blank-at-eol "
 846         } >x &&
 847         git commit -a --allow-empty -m preimage &&
 848         {
 849                 echo "0. blank-at-eol " &&
 850                 echo "1. still-blank-at-eol " &&
 851                 echo "2. and a new line "
 852         } >x &&
 853
 854         git diff --color |
 855         test_decode_color >current &&
 856
 857         cat >expected <<-\EOF &&
 858         <BOLD>diff --git a/x b/x<RESET>
 859         <BOLD>index d0233a2..700886e 100644<RESET>
 860         <BOLD>--- a/x<RESET>
 861         <BOLD>+++ b/x<RESET>
 862         <CYAN>@@ -1,2 +1,3 @@<RESET>
 863          0. blank-at-eol <RESET>
 864         <RED>-1. blank-at-eol <RESET>
 865         <GREEN>+<RESET><GREEN>1. still-blank-at-eol<RESET><BLUE> <RESET>
 866         <GREEN>+<RESET><GREEN>2. and a new line<RESET><BLUE> <RESET>
 867         EOF
 868
 869         test_cmp expected current
 870 '
 871
 872 test_expect_success 'ws-error-highlight test setup' '
 873
 874         git reset --hard &&
 875         {
 876                 echo "0. blank-at-eol " &&
 877                 echo "1. blank-at-eol "
 878         } >x &&
 879         git commit -a --allow-empty -m preimage &&
 880         {
 881                 echo "0. blank-at-eol " &&
 882                 echo "1. still-blank-at-eol " &&
 883                 echo "2. and a new line "
 884         } >x &&
 885
 886         cat >expect.default-old <<-\EOF &&
 887         <BOLD>diff --git a/x b/x<RESET>
 888         <BOLD>index d0233a2..700886e 100644<RESET>
 889         <BOLD>--- a/x<RESET>
 890         <BOLD>+++ b/x<RESET>
 891         <CYAN>@@ -1,2 +1,3 @@<RESET>
 892          0. blank-at-eol <RESET>
 893         <RED>-<RESET><RED>1. blank-at-eol<RESET><BLUE> <RESET>
 894         <GREEN>+<RESET><GREEN>1. still-blank-at-eol<RESET><BLUE> <RESET>
 895         <GREEN>+<RESET><GREEN>2. and a new line<RESET><BLUE> <RESET>
 896         EOF
 897
 898         cat >expect.all <<-\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          <RESET>0. blank-at-eol<RESET><BLUE> <RESET>
 905         <RED>-<RESET><RED>1. blank-at-eol<RESET><BLUE> <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         cat >expect.none <<-\EOF
 911         <BOLD>diff --git a/x b/x<RESET>
 912         <BOLD>index d0233a2..700886e 100644<RESET>
 913         <BOLD>--- a/x<RESET>
 914         <BOLD>+++ b/x<RESET>
 915         <CYAN>@@ -1,2 +1,3 @@<RESET>
 916          0. blank-at-eol <RESET>
 917         <RED>-1. blank-at-eol <RESET>
 918         <GREEN>+1. still-blank-at-eol <RESET>
 919         <GREEN>+2. and a new line <RESET>
 920         EOF
 921
 922 '
 923
 924 test_expect_success 'test --ws-error-highlight option' '
 925
 926         git diff --color --ws-error-highlight=default,old |
 927         test_decode_color >current &&
 928         test_cmp expect.default-old current &&
 929
 930         git diff --color --ws-error-highlight=all |
 931         test_decode_color >current &&
 932         test_cmp expect.all current &&
 933
 934         git diff --color --ws-error-highlight=none |
 935         test_decode_color >current &&
 936         test_cmp expect.none current
 937
 938 '
 939
 940 test_expect_success 'test diff.wsErrorHighlight config' '
 941
 942         git -c diff.wsErrorHighlight=default,old diff --color |
 943         test_decode_color >current &&
 944         test_cmp expect.default-old current &&
 945
 946         git -c diff.wsErrorHighlight=all diff --color |
 947         test_decode_color >current &&
 948         test_cmp expect.all current &&
 949
 950         git -c diff.wsErrorHighlight=none diff --color |
 951         test_decode_color >current &&
 952         test_cmp expect.none current
 953
 954 '
 955
 956 test_expect_success 'option overrides diff.wsErrorHighlight' '
 957
 958         git -c diff.wsErrorHighlight=none \
 959                 diff --color --ws-error-highlight=default,old |
 960         test_decode_color >current &&
 961         test_cmp expect.default-old current &&
 962
 963         git -c diff.wsErrorHighlight=default \
 964                 diff --color --ws-error-highlight=all |
 965         test_decode_color >current &&
 966         test_cmp expect.all current &&
 967
 968         git -c diff.wsErrorHighlight=all \
 969                 diff --color --ws-error-highlight=none |
 970         test_decode_color >current &&
 971         test_cmp expect.none current
 972
 973 '
 974
 975 test_done