t/t4034-diff-words.sh

   1 #!/bin/sh
   2
   3 test_description='word diff colors'
   4
   5 . ./test-lib.sh
   6 . "$TEST_DIRECTORY"/diff-lib.sh
   7
   8 cat >pre.simple <<-\EOF
   9         h(4)
  10
  11         a = b + c
  12 EOF
  13 cat >post.simple <<-\EOF
  14         h(4),hh[44]
  15
  16         a = b + c
  17
  18         aa = a
  19
  20         aeff = aeff * ( aaa )
  21 EOF
  22 cat >expect.letter-runs-are-words <<-\EOF
  23         <BOLD>diff --git a/pre b/post<RESET>
  24         <BOLD>index 330b04f..5ed8eff 100644<RESET>
  25         <BOLD>--- a/pre<RESET>
  26         <BOLD>+++ b/post<RESET>
  27         <CYAN>@@ -1,3 +1,7 @@<RESET>
  28         h(4),<GREEN>hh<RESET>[44]
  29
  30         a = b + c<RESET>
  31
  32         <GREEN>aa = a<RESET>
  33
  34         <GREEN>aeff = aeff * ( aaa<RESET> )
  35 EOF
  36 cat >expect.non-whitespace-is-word <<-\EOF
  37         <BOLD>diff --git a/pre b/post<RESET>
  38         <BOLD>index 330b04f..5ed8eff 100644<RESET>
  39         <BOLD>--- a/pre<RESET>
  40         <BOLD>+++ b/post<RESET>
  41         <CYAN>@@ -1,3 +1,7 @@<RESET>
  42         h(4)<GREEN>,hh[44]<RESET>
  43
  44         a = b + c<RESET>
  45
  46         <GREEN>aa = a<RESET>
  47
  48         <GREEN>aeff = aeff * ( aaa )<RESET>
  49 EOF
  50
  51 word_diff () {
  52         test_must_fail git diff --no-index "$@" pre post >output &&
  53         test_decode_color <output >output.decrypted &&
  54         test_cmp expect output.decrypted
  55 }
  56
  57 test_language_driver () {
  58         lang=$1
  59         test_expect_success "diff driver '$lang'" '
  60                 cp "$TEST_DIRECTORY/t4034/'"$lang"'/pre" \
  61                         "$TEST_DIRECTORY/t4034/'"$lang"'/post" \
  62                         "$TEST_DIRECTORY/t4034/'"$lang"'/expect" . &&
  63                 echo "* diff='"$lang"'" >.gitattributes &&
  64                 word_diff --color-words
  65         '
  66 }
  67
  68 test_expect_success setup '
  69         git config diff.color.old red &&
  70         git config diff.color.new green &&
  71         git config diff.color.func magenta
  72 '
  73
  74 test_expect_success 'set up pre and post with runs of whitespace' '
  75         cp pre.simple pre &&
  76         cp post.simple post
  77 '
  78
  79 test_expect_success 'word diff with runs of whitespace' '
  80         cat >expect <<-\EOF &&
  81                 <BOLD>diff --git a/pre b/post<RESET>
  82                 <BOLD>index 330b04f..5ed8eff 100644<RESET>
  83                 <BOLD>--- a/pre<RESET>
  84                 <BOLD>+++ b/post<RESET>
  85                 <CYAN>@@ -1,3 +1,7 @@<RESET>
  86                 <RED>h(4)<RESET><GREEN>h(4),hh[44]<RESET>
  87
  88                 a = b + c<RESET>
  89
  90                 <GREEN>aa = a<RESET>
  91
  92                 <GREEN>aeff = aeff * ( aaa )<RESET>
  93         EOF
  94         word_diff --color-words &&
  95         word_diff --word-diff=color &&
  96         word_diff --color --word-diff=color
  97 '
  98
  99 test_expect_success '--word-diff=porcelain' '
 100         sed 's/#.*$//' >expect <<-\EOF &&
 101                 diff --git a/pre b/post
 102                 index 330b04f..5ed8eff 100644
 103                 --- a/pre
 104                 +++ b/post
 105                 @@ -1,3 +1,7 @@
 106                 -h(4)
 107                 +h(4),hh[44]
 108                 ~
 109                  # significant space
 110                 ~
 111                  a = b + c
 112                 ~
 113                 ~
 114                 +aa = a
 115                 ~
 116                 ~
 117                 +aeff = aeff * ( aaa )
 118                 ~
 119         EOF
 120         word_diff --word-diff=porcelain
 121 '
 122
 123 test_expect_success '--word-diff=plain' '
 124         cat >expect <<-\EOF &&
 125                 diff --git a/pre b/post
 126                 index 330b04f..5ed8eff 100644
 127                 --- a/pre
 128                 +++ b/post
 129                 @@ -1,3 +1,7 @@
 130                 [-h(4)-]{+h(4),hh[44]+}
 131
 132                 a = b + c
 133
 134                 {+aa = a+}
 135
 136                 {+aeff = aeff * ( aaa )+}
 137         EOF
 138         word_diff --word-diff=plain &&
 139         word_diff --word-diff=plain --no-color
 140 '
 141
 142 test_expect_success '--word-diff=plain --color' '
 143         cat >expect <<-\EOF &&
 144                 <BOLD>diff --git a/pre b/post<RESET>
 145                 <BOLD>index 330b04f..5ed8eff 100644<RESET>
 146                 <BOLD>--- a/pre<RESET>
 147                 <BOLD>+++ b/post<RESET>
 148                 <CYAN>@@ -1,3 +1,7 @@<RESET>
 149                 <RED>[-h(4)-]<RESET><GREEN>{+h(4),hh[44]+}<RESET>
 150
 151                 a = b + c<RESET>
 152
 153                 <GREEN>{+aa = a+}<RESET>
 154
 155                 <GREEN>{+aeff = aeff * ( aaa )+}<RESET>
 156         EOF
 157         word_diff --word-diff=plain --color
 158 '
 159
 160 test_expect_success 'word diff without context' '
 161         cat >expect <<-\EOF &&
 162                 <BOLD>diff --git a/pre b/post<RESET>
 163                 <BOLD>index 330b04f..5ed8eff 100644<RESET>
 164                 <BOLD>--- a/pre<RESET>
 165                 <BOLD>+++ b/post<RESET>
 166                 <CYAN>@@ -1 +1 @@<RESET>
 167                 <RED>h(4)<RESET><GREEN>h(4),hh[44]<RESET>
 168                 <CYAN>@@ -3,0 +4,4 @@<RESET> <RESET><MAGENTA>a = b + c<RESET>
 169
 170                 <GREEN>aa = a<RESET>
 171
 172                 <GREEN>aeff = aeff * ( aaa )<RESET>
 173         EOF
 174         word_diff --color-words --unified=0
 175 '
 176
 177 test_expect_success 'word diff with a regular expression' '
 178         cp expect.letter-runs-are-words expect &&
 179         word_diff --color-words="[a-z]+"
 180 '
 181
 182 test_expect_success 'set up a diff driver' '
 183         git config diff.testdriver.wordRegex "[^[:space:]]" &&
 184         cat <<-\EOF >.gitattributes
 185                 pre diff=testdriver
 186                 post diff=testdriver
 187         EOF
 188 '
 189
 190 test_expect_success 'option overrides .gitattributes' '
 191         cp expect.letter-runs-are-words expect &&
 192         word_diff --color-words="[a-z]+"
 193 '
 194
 195 test_expect_success 'use regex supplied by driver' '
 196         cp expect.non-whitespace-is-word expect &&
 197         word_diff --color-words
 198 '
 199
 200 test_expect_success 'set up diff.wordRegex option' '
 201         git config diff.wordRegex "[[:alnum:]]+"
 202 '
 203
 204 test_expect_success 'command-line overrides config' '
 205         cp expect.letter-runs-are-words expect &&
 206         word_diff --color-words="[a-z]+"
 207 '
 208
 209 test_expect_success 'command-line overrides config: --word-diff-regex' '
 210         cat >expect <<-\EOF &&
 211                 <BOLD>diff --git a/pre b/post<RESET>
 212                 <BOLD>index 330b04f..5ed8eff 100644<RESET>
 213                 <BOLD>--- a/pre<RESET>
 214                 <BOLD>+++ b/post<RESET>
 215                 <CYAN>@@ -1,3 +1,7 @@<RESET>
 216                 h(4),<GREEN>{+hh+}<RESET>[44]
 217
 218                 a = b + c<RESET>
 219
 220                 <GREEN>{+aa = a+}<RESET>
 221
 222                 <GREEN>{+aeff = aeff * ( aaa+}<RESET> )
 223         EOF
 224         word_diff --color --word-diff-regex="[a-z]+"
 225 '
 226
 227 test_expect_success '.gitattributes override config' '
 228         cp expect.non-whitespace-is-word expect &&
 229         word_diff --color-words
 230 '
 231
 232 test_expect_success 'setup: remove diff driver regex' '
 233         test_might_fail git config --unset diff.testdriver.wordRegex
 234 '
 235
 236 test_expect_success 'use configured regex' '
 237         cat >expect <<-\EOF &&
 238                 <BOLD>diff --git a/pre b/post<RESET>
 239                 <BOLD>index 330b04f..5ed8eff 100644<RESET>
 240                 <BOLD>--- a/pre<RESET>
 241                 <BOLD>+++ b/post<RESET>
 242                 <CYAN>@@ -1,3 +1,7 @@<RESET>
 243                 h(4),<GREEN>hh[44<RESET>]
 244
 245                 a = b + c<RESET>
 246
 247                 <GREEN>aa = a<RESET>
 248
 249                 <GREEN>aeff = aeff * ( aaa<RESET> )
 250         EOF
 251         word_diff --color-words
 252 '
 253
 254 test_expect_success 'test parsing words for newline' '
 255         echo "aaa (aaa)" >pre &&
 256         echo "aaa (aaa) aaa" >post &&
 257         cat >expect <<-\EOF &&
 258                 <BOLD>diff --git a/pre b/post<RESET>
 259                 <BOLD>index c29453b..be22f37 100644<RESET>
 260                 <BOLD>--- a/pre<RESET>
 261                 <BOLD>+++ b/post<RESET>
 262                 <CYAN>@@ -1 +1 @@<RESET>
 263                 aaa (aaa) <GREEN>aaa<RESET>
 264         EOF
 265         word_diff --color-words="a+"
 266 '
 267
 268 test_expect_success 'test when words are only removed at the end' '
 269         echo "(:" >pre &&
 270         echo "(" >post &&
 271         cat >expect <<-\EOF &&
 272                 <BOLD>diff --git a/pre b/post<RESET>
 273                 <BOLD>index 289cb9d..2d06f37 100644<RESET>
 274                 <BOLD>--- a/pre<RESET>
 275                 <BOLD>+++ b/post<RESET>
 276                 <CYAN>@@ -1 +1 @@<RESET>
 277                 (<RED>:<RESET>
 278         EOF
 279         word_diff --color-words=.
 280 '
 281
 282 test_expect_success '--word-diff=none' '
 283         echo "(:" >pre &&
 284         echo "(" >post &&
 285         cat >expect <<-\EOF &&
 286                 diff --git a/pre b/post
 287                 index 289cb9d..2d06f37 100644
 288                 --- a/pre
 289                 +++ b/post
 290                 @@ -1 +1 @@
 291                 -(:
 292                 +(
 293         EOF
 294         word_diff --word-diff=plain --word-diff=none
 295 '
 296
 297 test_expect_success 'unset default driver' '
 298         test_unconfig diff.wordregex
 299 '
 300
 301 test_language_driver ada
 302 test_language_driver bibtex
 303 test_language_driver cpp
 304 test_language_driver csharp
 305 test_language_driver fortran
 306 test_language_driver html
 307 test_language_driver java
 308 test_language_driver matlab
 309 test_language_driver objc
 310 test_language_driver pascal
 311 test_language_driver perl
 312 test_language_driver php
 313 test_language_driver python
 314 test_language_driver ruby
 315 test_language_driver tex
 316
 317 test_expect_success 'word-diff with diff.sbe' '
 318         cat >expect <<-\EOF &&
 319         diff --git a/pre b/post
 320         index a1a53b5..bc8fe6d 100644
 321         --- a/pre
 322         +++ b/post
 323         @@ -1,3 +1,3 @@
 324         a
 325
 326         [-b-]{+c+}
 327         EOF
 328         cat >pre <<-\EOF &&
 329         a
 330
 331         b
 332         EOF
 333         cat >post <<-\EOF &&
 334         a
 335
 336         c
 337         EOF
 338         test_when_finished "git config --unset diff.suppress-blank-empty" &&
 339         git config diff.suppress-blank-empty true &&
 340         word_diff --word-diff=plain
 341 '
 342
 343 test_expect_success 'word-diff with no newline at EOF' '
 344         cat >expect <<-\EOF &&
 345         diff --git a/pre b/post
 346         index 7bf316e..3dd0303 100644
 347         --- a/pre
 348         +++ b/post
 349         @@ -1 +1 @@
 350         a a [-a-]{+ab+} a a
 351         EOF
 352         printf "%s" "a a a a a" >pre &&
 353         printf "%s" "a a ab a a" >post &&
 354         word_diff --word-diff=plain
 355 '
 356
 357 test_expect_success 'setup history with two files' '
 358         echo "a b; c" >a.tex &&
 359         echo "a b; c" >z.txt &&
 360         git add a.tex z.txt &&
 361         git commit -minitial &&
 362
 363         # modify both
 364         echo "a bx; c" >a.tex &&
 365         echo "a bx; c" >z.txt &&
 366         git commit -mmodified -a
 367 '
 368
 369 test_expect_success 'wordRegex for the first file does not apply to the second' '
 370         echo "*.tex diff=tex" >.gitattributes &&
 371         git config diff.tex.wordRegex "[a-z]+|." &&
 372         cat >expect <<-\EOF &&
 373                 diff --git a/a.tex b/a.tex
 374                 --- a/a.tex
 375                 +++ b/a.tex
 376                 @@ -1 +1 @@
 377                 a [-b-]{+bx+}; c
 378                 diff --git a/z.txt b/z.txt
 379                 --- a/z.txt
 380                 +++ b/z.txt
 381                 @@ -1 +1 @@
 382                 a [-b;-]{+bx;+} c
 383         EOF
 384         git diff --word-diff HEAD~ >actual &&
 385         compare_diff_patch expect actual
 386 '
 387
 388 test_done