t/t4034-diff-words.sh

   1 #!/bin/sh
   2
   3 test_description='word diff colors'
   4
   5 . ./test-lib.sh
   6 . "$TEST_DIRECTORY"/diff-lib.sh
   7
   8 cat >pre.simple <<-\EOF
   9         h(4)
  10
  11         a = b + c
  12 EOF
  13 cat >post.simple <<-\EOF
  14         h(4),hh[44]
  15
  16         a = b + c
  17
  18         aa = a
  19
  20         aeff = aeff * ( aaa )
  21 EOF
  22 pre=$(git rev-parse --short $(git hash-object pre.simple))
  23 post=$(git rev-parse --short $(git hash-object post.simple))
  24 cat >expect.letter-runs-are-words <<-EOF
  25         <BOLD>diff --git a/pre b/post<RESET>
  26         <BOLD>index $pre..$post 100644<RESET>
  27         <BOLD>--- a/pre<RESET>
  28         <BOLD>+++ b/post<RESET>
  29         <CYAN>@@ -1,3 +1,7 @@<RESET>
  30         h(4),<GREEN>hh<RESET>[44]
  31
  32         a = b + c<RESET>
  33
  34         <GREEN>aa = a<RESET>
  35
  36         <GREEN>aeff = aeff * ( aaa<RESET> )
  37 EOF
  38 cat >expect.non-whitespace-is-word <<-EOF
  39         <BOLD>diff --git a/pre b/post<RESET>
  40         <BOLD>index $pre..$post 100644<RESET>
  41         <BOLD>--- a/pre<RESET>
  42         <BOLD>+++ b/post<RESET>
  43         <CYAN>@@ -1,3 +1,7 @@<RESET>
  44         h(4)<GREEN>,hh[44]<RESET>
  45
  46         a = b + c<RESET>
  47
  48         <GREEN>aa = a<RESET>
  49
  50         <GREEN>aeff = aeff * ( aaa )<RESET>
  51 EOF
  52
  53 word_diff () {
  54         pre=$(git rev-parse --short $(git hash-object pre)) &&
  55         post=$(git rev-parse --short $(git hash-object post)) &&
  56         test_must_fail git diff --no-index "$@" pre post >output &&
  57         test_decode_color <output >output.decrypted &&
  58         sed -e "2s/index [^ ]*/index $pre..$post/" expect >expected
  59         test_cmp expected output.decrypted
  60 }
  61
  62 test_language_driver () {
  63         lang=$1
  64         test_expect_success "diff driver '$lang'" '
  65                 cp "$TEST_DIRECTORY/t4034/'"$lang"'/pre" \
  66                         "$TEST_DIRECTORY/t4034/'"$lang"'/post" \
  67                         "$TEST_DIRECTORY/t4034/'"$lang"'/expect" . &&
  68                 echo "* diff='"$lang"'" >.gitattributes &&
  69                 word_diff --color-words
  70         '
  71 }
  72
  73 test_expect_success setup '
  74         git config diff.color.old red &&
  75         git config diff.color.new green &&
  76         git config diff.color.func magenta
  77 '
  78
  79 test_expect_success 'set up pre and post with runs of whitespace' '
  80         cp pre.simple pre &&
  81         cp post.simple post
  82 '
  83
  84 test_expect_success 'word diff with runs of whitespace' '
  85         cat >expect <<-EOF &&
  86                 <BOLD>diff --git a/pre b/post<RESET>
  87                 <BOLD>index $pre..$post 100644<RESET>
  88                 <BOLD>--- a/pre<RESET>
  89                 <BOLD>+++ b/post<RESET>
  90                 <CYAN>@@ -1,3 +1,7 @@<RESET>
  91                 <RED>h(4)<RESET><GREEN>h(4),hh[44]<RESET>
  92
  93                 a = b + c<RESET>
  94
  95                 <GREEN>aa = a<RESET>
  96
  97                 <GREEN>aeff = aeff * ( aaa )<RESET>
  98         EOF
  99         word_diff --color-words &&
 100         word_diff --word-diff=color &&
 101         word_diff --color --word-diff=color
 102 '
 103
 104 test_expect_success '--word-diff=porcelain' '
 105         sed "s/#.*$//" >expect <<-EOF &&
 106                 diff --git a/pre b/post
 107                 index $pre..$post 100644
 108                 --- a/pre
 109                 +++ b/post
 110                 @@ -1,3 +1,7 @@
 111                 -h(4)
 112                 +h(4),hh[44]
 113                 ~
 114                  # significant space
 115                 ~
 116                  a = b + c
 117                 ~
 118                 ~
 119                 +aa = a
 120                 ~
 121                 ~
 122                 +aeff = aeff * ( aaa )
 123                 ~
 124         EOF
 125         word_diff --word-diff=porcelain
 126 '
 127
 128 test_expect_success '--word-diff=plain' '
 129         cat >expect <<-EOF &&
 130                 diff --git a/pre b/post
 131                 index $pre..$post 100644
 132                 --- a/pre
 133                 +++ b/post
 134                 @@ -1,3 +1,7 @@
 135                 [-h(4)-]{+h(4),hh[44]+}
 136
 137                 a = b + c
 138
 139                 {+aa = a+}
 140
 141                 {+aeff = aeff * ( aaa )+}
 142         EOF
 143         word_diff --word-diff=plain &&
 144         word_diff --word-diff=plain --no-color
 145 '
 146
 147 test_expect_success '--word-diff=plain --color' '
 148         cat >expect <<-EOF &&
 149                 <BOLD>diff --git a/pre b/post<RESET>
 150                 <BOLD>index $pre..$post 100644<RESET>
 151                 <BOLD>--- a/pre<RESET>
 152                 <BOLD>+++ b/post<RESET>
 153                 <CYAN>@@ -1,3 +1,7 @@<RESET>
 154                 <RED>[-h(4)-]<RESET><GREEN>{+h(4),hh[44]+}<RESET>
 155
 156                 a = b + c<RESET>
 157
 158                 <GREEN>{+aa = a+}<RESET>
 159
 160                 <GREEN>{+aeff = aeff * ( aaa )+}<RESET>
 161         EOF
 162         word_diff --word-diff=plain --color
 163 '
 164
 165 test_expect_success 'word diff without context' '
 166         cat >expect <<-EOF &&
 167                 <BOLD>diff --git a/pre b/post<RESET>
 168                 <BOLD>index $pre..$post 100644<RESET>
 169                 <BOLD>--- a/pre<RESET>
 170                 <BOLD>+++ b/post<RESET>
 171                 <CYAN>@@ -1 +1 @@<RESET>
 172                 <RED>h(4)<RESET><GREEN>h(4),hh[44]<RESET>
 173                 <CYAN>@@ -3,0 +4,4 @@<RESET> <RESET><MAGENTA>a = b + c<RESET>
 174
 175                 <GREEN>aa = a<RESET>
 176
 177                 <GREEN>aeff = aeff * ( aaa )<RESET>
 178         EOF
 179         word_diff --color-words --unified=0
 180 '
 181
 182 test_expect_success 'word diff with a regular expression' '
 183         cp expect.letter-runs-are-words expect &&
 184         word_diff --color-words="[a-z]+"
 185 '
 186
 187 test_expect_success 'set up a diff driver' '
 188         git config diff.testdriver.wordRegex "[^[:space:]]" &&
 189         cat <<-\EOF >.gitattributes
 190                 pre diff=testdriver
 191                 post diff=testdriver
 192         EOF
 193 '
 194
 195 test_expect_success 'option overrides .gitattributes' '
 196         cp expect.letter-runs-are-words expect &&
 197         word_diff --color-words="[a-z]+"
 198 '
 199
 200 test_expect_success 'use regex supplied by driver' '
 201         cp expect.non-whitespace-is-word expect &&
 202         word_diff --color-words
 203 '
 204
 205 test_expect_success 'set up diff.wordRegex option' '
 206         git config diff.wordRegex "[[:alnum:]]+"
 207 '
 208
 209 test_expect_success 'command-line overrides config' '
 210         cp expect.letter-runs-are-words expect &&
 211         word_diff --color-words="[a-z]+"
 212 '
 213
 214 test_expect_success 'command-line overrides config: --word-diff-regex' '
 215         cat >expect <<-EOF &&
 216                 <BOLD>diff --git a/pre b/post<RESET>
 217                 <BOLD>index $pre..$post 100644<RESET>
 218                 <BOLD>--- a/pre<RESET>
 219                 <BOLD>+++ b/post<RESET>
 220                 <CYAN>@@ -1,3 +1,7 @@<RESET>
 221                 h(4),<GREEN>{+hh+}<RESET>[44]
 222
 223                 a = b + c<RESET>
 224
 225                 <GREEN>{+aa = a+}<RESET>
 226
 227                 <GREEN>{+aeff = aeff * ( aaa+}<RESET> )
 228         EOF
 229         word_diff --color --word-diff-regex="[a-z]+"
 230 '
 231
 232 test_expect_success '.gitattributes override config' '
 233         cp expect.non-whitespace-is-word expect &&
 234         word_diff --color-words
 235 '
 236
 237 test_expect_success 'setup: remove diff driver regex' '
 238         test_unconfig diff.testdriver.wordRegex
 239 '
 240
 241 test_expect_success 'use configured regex' '
 242         cat >expect <<-EOF &&
 243                 <BOLD>diff --git a/pre b/post<RESET>
 244                 <BOLD>index $pre..$post 100644<RESET>
 245                 <BOLD>--- a/pre<RESET>
 246                 <BOLD>+++ b/post<RESET>
 247                 <CYAN>@@ -1,3 +1,7 @@<RESET>
 248                 h(4),<GREEN>hh[44<RESET>]
 249
 250                 a = b + c<RESET>
 251
 252                 <GREEN>aa = a<RESET>
 253
 254                 <GREEN>aeff = aeff * ( aaa<RESET> )
 255         EOF
 256         word_diff --color-words
 257 '
 258
 259 test_expect_success 'test parsing words for newline' '
 260         echo "aaa (aaa)" >pre &&
 261         echo "aaa (aaa) aaa" >post &&
 262         pre=$(git rev-parse --short $(git hash-object pre)) &&
 263         post=$(git rev-parse --short $(git hash-object post)) &&
 264         cat >expect <<-EOF &&
 265                 <BOLD>diff --git a/pre b/post<RESET>
 266                 <BOLD>index $pre..$post 100644<RESET>
 267                 <BOLD>--- a/pre<RESET>
 268                 <BOLD>+++ b/post<RESET>
 269                 <CYAN>@@ -1 +1 @@<RESET>
 270                 aaa (aaa) <GREEN>aaa<RESET>
 271         EOF
 272         word_diff --color-words="a+"
 273 '
 274
 275 test_expect_success 'test when words are only removed at the end' '
 276         echo "(:" >pre &&
 277         echo "(" >post &&
 278         pre=$(git rev-parse --short $(git hash-object pre)) &&
 279         post=$(git rev-parse --short $(git hash-object post)) &&
 280         cat >expect <<-EOF &&
 281                 <BOLD>diff --git a/pre b/post<RESET>
 282                 <BOLD>index $pre..$post 100644<RESET>
 283                 <BOLD>--- a/pre<RESET>
 284                 <BOLD>+++ b/post<RESET>
 285                 <CYAN>@@ -1 +1 @@<RESET>
 286                 (<RED>:<RESET>
 287         EOF
 288         word_diff --color-words=.
 289 '
 290
 291 test_expect_success '--word-diff=none' '
 292         echo "(:" >pre &&
 293         echo "(" >post &&
 294         pre=$(git rev-parse --short $(git hash-object pre)) &&
 295         post=$(git rev-parse --short $(git hash-object post)) &&
 296         cat >expect <<-EOF &&
 297                 diff --git a/pre b/post
 298                 index $pre..$post 100644
 299                 --- a/pre
 300                 +++ b/post
 301                 @@ -1 +1 @@
 302                 -(:
 303                 +(
 304         EOF
 305         word_diff --word-diff=plain --word-diff=none
 306 '
 307
 308 test_expect_success 'unset default driver' '
 309         test_unconfig diff.wordregex
 310 '
 311
 312 test_language_driver ada
 313 test_language_driver bibtex
 314 test_language_driver cpp
 315 test_language_driver csharp
 316 test_language_driver css
 317 test_language_driver dts
 318 test_language_driver fortran
 319 test_language_driver html
 320 test_language_driver java
 321 test_language_driver matlab
 322 test_language_driver objc
 323 test_language_driver pascal
 324 test_language_driver perl
 325 test_language_driver php
 326 test_language_driver python
 327 test_language_driver ruby
 328 test_language_driver tex
 329
 330 test_expect_success 'word-diff with diff.sbe' '
 331         cat >pre <<-\EOF &&
 332         a
 333
 334         b
 335         EOF
 336         cat >post <<-\EOF &&
 337         a
 338
 339         c
 340         EOF
 341         pre=$(git rev-parse --short $(git hash-object pre)) &&
 342         post=$(git rev-parse --short $(git hash-object post)) &&
 343         cat >expect <<-EOF &&
 344         diff --git a/pre b/post
 345         index $pre..$post 100644
 346         --- a/pre
 347         +++ b/post
 348         @@ -1,3 +1,3 @@
 349         a
 350
 351         [-b-]{+c+}
 352         EOF
 353         test_config diff.suppress-blank-empty true &&
 354         word_diff --word-diff=plain
 355 '
 356
 357 test_expect_success 'word-diff with no newline at EOF' '
 358         printf "%s" "a a a a a" >pre &&
 359         printf "%s" "a a ab a a" >post &&
 360         pre=$(git rev-parse --short $(git hash-object pre)) &&
 361         post=$(git rev-parse --short $(git hash-object post)) &&
 362         cat >expect <<-EOF &&
 363         diff --git a/pre b/post
 364         index $pre..$post 100644
 365         --- a/pre
 366         +++ b/post
 367         @@ -1 +1 @@
 368         a a [-a-]{+ab+} a a
 369         EOF
 370         word_diff --word-diff=plain
 371 '
 372
 373 test_expect_success 'setup history with two files' '
 374         echo "a b; c" >a.tex &&
 375         echo "a b; c" >z.txt &&
 376         git add a.tex z.txt &&
 377         git commit -minitial &&
 378
 379         # modify both
 380         echo "a bx; c" >a.tex &&
 381         echo "a bx; c" >z.txt &&
 382         git commit -mmodified -a
 383 '
 384
 385 test_expect_success 'wordRegex for the first file does not apply to the second' '
 386         echo "*.tex diff=tex" >.gitattributes &&
 387         test_config diff.tex.wordRegex "[a-z]+|." &&
 388         cat >expect <<-\EOF &&
 389                 diff --git a/a.tex b/a.tex
 390                 --- a/a.tex
 391                 +++ b/a.tex
 392                 @@ -1 +1 @@
 393                 a [-b-]{+bx+}; c
 394                 diff --git a/z.txt b/z.txt
 395                 --- a/z.txt
 396                 +++ b/z.txt
 397                 @@ -1 +1 @@
 398                 a [-b;-]{+bx;+} c
 399         EOF
 400         git diff --word-diff HEAD~ >actual &&
 401         compare_diff_patch expect actual
 402 '
 403
 404 test_done