t/t4124-apply-ws-rule.sh

   1 #!/bin/sh
   2
   3 test_description='core.whitespace rules and git apply'
   4
   5 . ./test-lib.sh
   6
   7 prepare_test_file () {
   8
   9         # A line that has character X is touched iff RULE is in effect:
  10         #       X  RULE
  11         #       !  trailing-space
  12         #       @  space-before-tab
  13         #       #  indent-with-non-tab
  14         #       %  tab-in-indent
  15         sed -e "s/_/ /g" -e "s/>/       /" <<-\EOF
  16                 An_SP in an ordinary line>and a HT.
  17                 >A HT (%).
  18                 _>A SP and a HT (@%).
  19                 _>_A SP, a HT and a SP (@%).
  20                 _______Seven SP.
  21                 ________Eight SP (#).
  22                 _______>Seven SP and a HT (@%).
  23                 ________>Eight SP and a HT (@#%).
  24                 _______>_Seven SP, a HT and a SP (@%).
  25                 ________>_Eight SP, a HT and a SP (@#%).
  26                 _______________Fifteen SP (#).
  27                 _______________>Fifteen SP and a HT (@#%).
  28                 ________________Sixteen SP (#).
  29                 ________________>Sixteen SP and a HT (@#%).
  30                 _____a__Five SP, a non WS, two SP.
  31                 A line with a (!) trailing SP_
  32                 A line with a (!) trailing HT>
  33         EOF
  34 }
  35
  36 apply_patch () {
  37         >target &&
  38         sed -e "s|\([ab]\)/file|\1/target|" <patch |
  39         git apply "$@"
  40 }
  41
  42 test_fix () {
  43         # fix should not barf
  44         apply_patch --whitespace=fix || return 1
  45
  46         # find touched lines
  47         $DIFF file target | sed -n -e "s/^> //p" >fixed
  48
  49         # the changed lines are all expeced to change
  50         fixed_cnt=$(wc -l <fixed)
  51         case "$1" in
  52         '') expect_cnt=$fixed_cnt ;;
  53         ?*) expect_cnt=$(grep "[$1]" <fixed | wc -l) ;;
  54         esac
  55         test $fixed_cnt -eq $expect_cnt || return 1
  56
  57         # and we are not missing anything
  58         case "$1" in
  59         '') expect_cnt=0 ;;
  60         ?*) expect_cnt=$(grep "[$1]" <file | wc -l) ;;
  61         esac
  62         test $fixed_cnt -eq $expect_cnt || return 1
  63
  64         # Get the patch actually applied
  65         git diff-files -p target >fixed-patch
  66         test -s fixed-patch && return 0
  67
  68         # Make sure it is complaint-free
  69         >target
  70         git apply --whitespace=error-all <fixed-patch
  71
  72 }
  73
  74 test_expect_success setup '
  75
  76         >file &&
  77         git add file &&
  78         prepare_test_file >file &&
  79         git diff-files -p >patch &&
  80         >target &&
  81         git add target
  82
  83 '
  84
  85 test_expect_success 'whitespace=nowarn, default rule' '
  86
  87         apply_patch --whitespace=nowarn &&
  88         test_cmp file target
  89
  90 '
  91
  92 test_expect_success 'whitespace=warn, default rule' '
  93
  94         apply_patch --whitespace=warn &&
  95         test_cmp file target
  96
  97 '
  98
  99 test_expect_success 'whitespace=error-all, default rule' '
 100
 101         apply_patch --whitespace=error-all && return 1
 102         test -s target && return 1
 103         : happy
 104
 105 '
 106
 107 test_expect_success 'whitespace=error-all, no rule' '
 108
 109         git config core.whitespace -trailing,-space-before,-indent &&
 110         apply_patch --whitespace=error-all &&
 111         test_cmp file target
 112
 113 '
 114
 115 test_expect_success 'whitespace=error-all, no rule (attribute)' '
 116
 117         git config --unset core.whitespace &&
 118         echo "target -whitespace" >.gitattributes &&
 119         apply_patch --whitespace=error-all &&
 120         test_cmp file target
 121
 122 '
 123
 124 for t in - ''
 125 do
 126         case "$t" in '') tt='!' ;; *) tt= ;; esac
 127         for s in - ''
 128         do
 129                 case "$s" in '') ts='@' ;; *) ts= ;; esac
 130                 for i in - ''
 131                 do
 132                         case "$i" in '') ti='#' ;; *) ti= ;; esac
 133                         for h in - ''
 134                         do
 135                                 [ -z "$h$i" ] && continue
 136                                 case "$h" in '') th='%' ;; *) th= ;; esac
 137                                 rule=${t}trailing,${s}space,${i}indent,${h}tab
 138
 139                                 rm -f .gitattributes
 140                                 test_expect_success "rule=$rule" '
 141                                         git config core.whitespace "$rule" &&
 142                                         test_fix "$tt$ts$ti$th"
 143                                 '
 144
 145                                 test_expect_success "rule=$rule (attributes)" '
 146                                         git config --unset core.whitespace &&
 147                                         echo "target whitespace=$rule" >.gitattributes &&
 148                                         test_fix "$tt$ts$ti$th"
 149                                 '
 150
 151                         done
 152                 done
 153         done
 154 done
 155
 156 create_patch () {
 157         sed -e "s/_/ /" <<-\EOF
 158                 diff --git a/target b/target
 159                 index e69de29..8bd6648 100644
 160                 --- a/target
 161                 +++ b/target
 162                 @@ -0,0 +1,3 @@
 163                 +An empty line follows
 164                 +
 165                 +A line with trailing whitespace and no newline_
 166                 \ No newline at end of file
 167         EOF
 168 }
 169
 170 test_expect_success 'trailing whitespace & no newline at the end of file' '
 171         >target &&
 172         create_patch >patch-file &&
 173         git apply --whitespace=fix patch-file &&
 174         grep "newline$" target &&
 175         grep "^$" target
 176 '
 177
 178 test_expect_success 'blank at EOF with --whitespace=fix (1)' '
 179         : these can fail depending on what we did before
 180         git config --unset core.whitespace
 181         rm -f .gitattributes
 182
 183         { echo a; echo b; echo c; } >one &&
 184         git add one &&
 185         { echo a; echo b; echo c; } >expect &&
 186         { cat expect; echo; } >one &&
 187         git diff -- one >patch &&
 188
 189         git checkout one &&
 190         git apply --whitespace=fix patch &&
 191         test_cmp expect one
 192 '
 193
 194 test_expect_success 'blank at EOF with --whitespace=fix (2)' '
 195         { echo a; echo b; echo c; } >one &&
 196         git add one &&
 197         { echo a; echo c; } >expect &&
 198         { cat expect; echo; echo; } >one &&
 199         git diff -- one >patch &&
 200
 201         git checkout one &&
 202         git apply --whitespace=fix patch &&
 203         test_cmp expect one
 204 '
 205
 206 test_expect_success 'blank at EOF with --whitespace=fix (3)' '
 207         { echo a; echo b; echo; } >one &&
 208         git add one &&
 209         { echo a; echo c; echo; } >expect &&
 210         { cat expect; echo; echo; } >one &&
 211         git diff -- one >patch &&
 212
 213         git checkout one &&
 214         git apply --whitespace=fix patch &&
 215         test_cmp expect one
 216 '
 217
 218 test_expect_success 'blank at end of hunk, not at EOF with --whitespace=fix' '
 219         { echo a; echo b; echo; echo; echo; echo; echo; echo d; } >one &&
 220         git add one &&
 221         { echo a; echo c; echo; echo; echo; echo; echo; echo; echo d; } >expect &&
 222         cp expect one &&
 223         git diff -- one >patch &&
 224
 225         git checkout one &&
 226         git apply --whitespace=fix patch &&
 227         test_cmp expect one
 228 '
 229
 230 test_expect_success 'blank at EOF with --whitespace=warn' '
 231         { echo a; echo b; echo c; } >one &&
 232         git add one &&
 233         echo >>one &&
 234         cat one >expect &&
 235         git diff -- one >patch &&
 236
 237         git checkout one &&
 238         git apply --whitespace=warn patch 2>error &&
 239         test_cmp expect one &&
 240         grep "new blank line at EOF" error
 241 '
 242
 243 test_expect_success 'blank at EOF with --whitespace=error' '
 244         { echo a; echo b; echo c; } >one &&
 245         git add one &&
 246         cat one >expect &&
 247         echo >>one &&
 248         git diff -- one >patch &&
 249
 250         git checkout one &&
 251         test_must_fail git apply --whitespace=error patch 2>error &&
 252         test_cmp expect one &&
 253         grep "new blank line at EOF" error
 254 '
 255
 256 test_expect_success 'blank but not empty at EOF' '
 257         { echo a; echo b; echo c; } >one &&
 258         git add one &&
 259         echo "   " >>one &&
 260         cat one >expect &&
 261         git diff -- one >patch &&
 262
 263         git checkout one &&
 264         git apply --whitespace=warn patch 2>error &&
 265         test_cmp expect one &&
 266         grep "new blank line at EOF" error
 267 '
 268
 269 test_expect_success 'applying beyond EOF requires one non-blank context line' '
 270         { echo; echo; echo; echo; } >one &&
 271         git add one &&
 272         { echo b; } >>one &&
 273         git diff -- one >patch &&
 274
 275         git checkout one &&
 276         { echo a; echo; } >one &&
 277         cp one expect &&
 278         test_must_fail git apply --whitespace=fix patch &&
 279         test_cmp one expect &&
 280         test_must_fail git apply --ignore-space-change --whitespace=fix patch &&
 281         test_cmp one expect
 282 '
 283
 284 test_expect_success 'tons of blanks at EOF should not apply' '
 285         for i in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16; do
 286                 echo; echo; echo; echo;
 287         done >one &&
 288         git add one &&
 289         echo a >>one &&
 290         git diff -- one >patch &&
 291
 292         >one &&
 293         test_must_fail git apply --whitespace=fix patch &&
 294         test_must_fail git apply --ignore-space-change --whitespace=fix patch
 295 '
 296
 297 test_expect_success 'missing blank line at end with --whitespace=fix' '
 298         echo a >one &&
 299         echo >>one &&
 300         git add one &&
 301         echo b >>one &&
 302         cp one expect &&
 303         git diff -- one >patch &&
 304         echo a >one &&
 305         cp one saved-one &&
 306         test_must_fail git apply patch &&
 307         git apply --whitespace=fix patch &&
 308         test_cmp one expect &&
 309         mv saved-one one &&
 310         git apply --ignore-space-change --whitespace=fix patch &&
 311         test_cmp one expect
 312 '
 313
 314 test_expect_success 'two missing blank lines at end with --whitespace=fix' '
 315         { echo a; echo; echo b; echo c; } >one &&
 316         cp one no-blank-lines &&
 317         { echo; echo; } >>one &&
 318         git add one &&
 319         echo d >>one &&
 320         cp one expect &&
 321         echo >>one &&
 322         git diff -- one >patch &&
 323         cp no-blank-lines one &&
 324         test_must_fail git apply patch &&
 325         git apply --whitespace=fix patch &&
 326         test_cmp one expect &&
 327         mv no-blank-lines one &&
 328         test_must_fail git apply patch &&
 329         git apply --ignore-space-change --whitespace=fix patch &&
 330         test_cmp one expect
 331 '
 332
 333 test_expect_success 'missing blank line at end, insert before end, --whitespace=fix' '
 334         { echo a; echo; } >one &&
 335         git add one &&
 336         { echo b; echo a; echo; } >one &&
 337         cp one expect &&
 338         git diff -- one >patch &&
 339         echo a >one &&
 340         test_must_fail git apply patch &&
 341         git apply --whitespace=fix patch &&
 342         test_cmp one expect
 343 '
 344
 345 test_expect_success 'shrink file with tons of missing blanks at end of file' '
 346         { echo a; echo b; echo c; } >one &&
 347         cp one no-blank-lines &&
 348         for i in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16; do
 349                 echo; echo; echo; echo;
 350         done >>one &&
 351         git add one &&
 352         echo a >one &&
 353         cp one expect &&
 354         git diff -- one >patch &&
 355         cp no-blank-lines one &&
 356         test_must_fail git apply patch &&
 357         git apply --whitespace=fix patch &&
 358         test_cmp one expect &&
 359         mv no-blank-lines one &&
 360         git apply --ignore-space-change --whitespace=fix patch &&
 361         test_cmp one expect
 362 '
 363
 364 test_expect_success 'missing blanks at EOF must only match blank lines' '
 365         { echo a; echo b; } >one &&
 366         git add one &&
 367         { echo c; echo d; } >>one &&
 368         git diff -- one >patch &&
 369
 370         echo a >one &&
 371         test_must_fail git apply patch
 372         test_must_fail git apply --whitespace=fix patch &&
 373         test_must_fail git apply --ignore-space-change --whitespace=fix patch
 374 '
 375
 376 sed -e's/Z//' >one <<EOF
 377 a
 378 b
 379 c
 380                       Z
 381 EOF
 382
 383 test_expect_success 'missing blank line should match context line with spaces' '
 384         git add one &&
 385         echo d >>one &&
 386         git diff -- one >patch &&
 387         { echo a; echo b; echo c; } >one &&
 388         cp one expect &&
 389         { echo; echo d; } >>expect &&
 390         git add one &&
 391
 392         git apply --whitespace=fix patch &&
 393         test_cmp one expect
 394 '
 395
 396 sed -e's/Z//' >one <<EOF
 397 a
 398 b
 399 c
 400                       Z
 401 EOF
 402
 403 test_expect_success 'same, but with the --ignore-space-option' '
 404         git add one &&
 405         echo d >>one &&
 406         cp one expect &&
 407         git diff -- one >patch &&
 408         { echo a; echo b; echo c; } >one &&
 409         git add one &&
 410
 411         git checkout-index -f one &&
 412         git apply --ignore-space-change --whitespace=fix patch &&
 413         test_cmp one expect
 414 '
 415
 416 test_expect_success 'same, but with CR-LF line endings && cr-at-eol set' '
 417         git config core.whitespace cr-at-eol &&
 418         printf "a\r\n" >one &&
 419         printf "b\r\n" >>one &&
 420         printf "c\r\n" >>one &&
 421         cp one save-one &&
 422         printf "                 \r\n" >>one
 423         git add one &&
 424         printf "d\r\n" >>one &&
 425         cp one expect &&
 426         git diff -- one >patch &&
 427         mv save-one one &&
 428
 429         git apply --ignore-space-change --whitespace=fix patch &&
 430         test_cmp one expect
 431 '
 432
 433 test_expect_success 'same, but with CR-LF line endings && cr-at-eol unset' '
 434         git config --unset core.whitespace &&
 435         printf "a\r\n" >one &&
 436         printf "b\r\n" >>one &&
 437         printf "c\r\n" >>one &&
 438         cp one save-one &&
 439         printf "                 \r\n" >>one
 440         git add one &&
 441         cp one expect &&
 442         printf "d\r\n" >>one &&
 443         git diff -- one >patch &&
 444         mv save-one one &&
 445         echo d >>expect &&
 446
 447         git apply --ignore-space-change --whitespace=fix patch &&
 448         test_cmp one expect
 449 '
 450
 451 test_done