t/t4038-diff-combined.sh

   1 #!/bin/sh
   2
   3 test_description='combined diff'
   4
   5 . ./test-lib.sh
   6 . "$TEST_DIRECTORY"/diff-lib.sh
   7
   8 setup_helper () {
   9         one=$1 branch=$2 side=$3 &&
  10
  11         git branch $side $branch &&
  12         for l in $one two three fyra
  13         do
  14                 echo $l
  15         done >file &&
  16         git add file &&
  17         test_tick &&
  18         git commit -m $branch &&
  19         git checkout $side &&
  20         for l in $one two three quatro
  21         do
  22                 echo $l
  23         done >file &&
  24         git add file &&
  25         test_tick &&
  26         git commit -m $side &&
  27         test_must_fail git merge $branch &&
  28         for l in $one three four
  29         do
  30                 echo $l
  31         done >file &&
  32         git add file &&
  33         test_tick &&
  34         git commit -m "merge $branch into $side"
  35 }
  36
  37 verify_helper () {
  38         it=$1 &&
  39
  40         # Ignore lines that were removed only from the other parent
  41         sed -e '
  42                 1,/^@@@/d
  43                 /^ -/d
  44                 s/^\(.\)./\1/
  45         ' "$it" >"$it.actual.1" &&
  46         sed -e '
  47                 1,/^@@@/d
  48                 /^- /d
  49                 s/^.\(.\)/\1/
  50         ' "$it" >"$it.actual.2" &&
  51
  52         git diff "$it^" "$it" -- | sed -e '1,/^@@/d' >"$it.expect.1" &&
  53         test_cmp "$it.expect.1" "$it.actual.1" &&
  54
  55         git diff "$it^2" "$it" -- | sed -e '1,/^@@/d' >"$it.expect.2" &&
  56         test_cmp "$it.expect.2" "$it.actual.2"
  57 }
  58
  59 test_expect_success setup '
  60         >file &&
  61         git add file &&
  62         test_tick &&
  63         git commit -m initial &&
  64
  65         git branch withone &&
  66         git branch sansone &&
  67
  68         git checkout withone &&
  69         setup_helper one withone sidewithone &&
  70
  71         git checkout sansone &&
  72         setup_helper "" sansone sidesansone
  73 '
  74
  75 test_expect_success 'check combined output (1)' '
  76         git show sidewithone -- >sidewithone &&
  77         verify_helper sidewithone
  78 '
  79
  80 test_expect_success 'check combined output (2)' '
  81         git show sidesansone -- >sidesansone &&
  82         verify_helper sidesansone
  83 '
  84
  85 test_expect_success 'diagnose truncated file' '
  86         >file &&
  87         git add file &&
  88         git commit --amend -C HEAD &&
  89         git show >out &&
  90         grep "diff --cc file" out
  91 '
  92
  93 test_expect_success 'setup for --cc --raw' '
  94         blob=$(echo file | git hash-object --stdin -w) &&
  95         base_tree=$(echo "100644 blob $blob     file" | git mktree) &&
  96         trees= &&
  97         for i in $(test_seq 1 40)
  98         do
  99                 blob=$(echo file$i | git hash-object --stdin -w) &&
 100                 trees="$trees$(echo "100644 blob $blob  file" | git mktree)$LF"
 101         done
 102 '
 103
 104 test_expect_success 'check --cc --raw with four trees' '
 105         four_trees=$(echo "$trees" | sed -e 4q) &&
 106         git diff --cc --raw $four_trees $base_tree >out &&
 107         # Check for four leading colons in the output:
 108         grep "^::::[^:]" out
 109 '
 110
 111 test_expect_success 'check --cc --raw with forty trees' '
 112         git diff --cc --raw $trees $base_tree >out &&
 113         # Check for forty leading colons in the output:
 114         grep "^::::::::::::::::::::::::::::::::::::::::[^:]" out
 115 '
 116
 117 test_expect_success 'setup combined ignore spaces' '
 118         git checkout master &&
 119         >test &&
 120         git add test &&
 121         git commit -m initial &&
 122
 123         tr -d Q <<-\EOF >test &&
 124         always coalesce
 125         eol space coalesce Q
 126         space  change coalesce
 127         all spa ces coalesce
 128         eol spaces Q
 129         space  change
 130         all spa ces
 131         EOF
 132         git commit -m "test space change" -a &&
 133
 134         git checkout -b side HEAD^ &&
 135         tr -d Q <<-\EOF >test &&
 136         always coalesce
 137         eol space coalesce
 138         space change coalesce
 139         all spaces coalesce
 140         eol spaces
 141         space change
 142         all spaces
 143         EOF
 144         git commit -m "test other space changes" -a &&
 145
 146         test_must_fail git merge master &&
 147         tr -d Q <<-\EOF >test &&
 148         eol spaces Q
 149         space  change
 150         all spa ces
 151         EOF
 152         git commit -m merged -a
 153 '
 154
 155 test_expect_success 'check combined output (no ignore space)' '
 156         git show >actual.tmp &&
 157         sed -e "1,/^@@@/d" < actual.tmp >actual &&
 158         tr -d Q <<-\EOF >expected &&
 159         --always coalesce
 160         - eol space coalesce
 161         - space change coalesce
 162         - all spaces coalesce
 163         - eol spaces
 164         - space change
 165         - all spaces
 166          -eol space coalesce Q
 167          -space  change coalesce
 168          -all spa ces coalesce
 169         + eol spaces Q
 170         + space  change
 171         + all spa ces
 172         EOF
 173         compare_diff_patch expected actual
 174 '
 175
 176 test_expect_success 'check combined output (ignore space at eol)' '
 177         git show --ignore-space-at-eol >actual.tmp &&
 178         sed -e "1,/^@@@/d" < actual.tmp >actual &&
 179         tr -d Q <<-\EOF >expected &&
 180         --always coalesce
 181         --eol space coalesce
 182         - space change coalesce
 183         - all spaces coalesce
 184          -space  change coalesce
 185          -all spa ces coalesce
 186           eol spaces Q
 187         - space change
 188         - all spaces
 189         + space  change
 190         + all spa ces
 191         EOF
 192         compare_diff_patch expected actual
 193 '
 194
 195 test_expect_success 'check combined output (ignore space change)' '
 196         git show -b >actual.tmp &&
 197         sed -e "1,/^@@@/d" < actual.tmp >actual &&
 198         tr -d Q <<-\EOF >expected &&
 199         --always coalesce
 200         --eol space coalesce
 201         --space change coalesce
 202         - all spaces coalesce
 203          -all spa ces coalesce
 204           eol spaces Q
 205           space  change
 206         - all spaces
 207         + all spa ces
 208         EOF
 209         compare_diff_patch expected actual
 210 '
 211
 212 test_expect_success 'check combined output (ignore all spaces)' '
 213         git show -w >actual.tmp &&
 214         sed -e "1,/^@@@/d" < actual.tmp >actual &&
 215         tr -d Q <<-\EOF >expected &&
 216         --always coalesce
 217         --eol space coalesce
 218         --space change coalesce
 219         --all spaces coalesce
 220           eol spaces Q
 221           space  change
 222           all spa ces
 223         EOF
 224         compare_diff_patch expected actual
 225 '
 226
 227 test_expect_success 'combine diff coalesce simple' '
 228         >test &&
 229         git add test &&
 230         git commit -m initial &&
 231         test_seq 4 >test &&
 232         git commit -a -m empty1 &&
 233         git branch side1 &&
 234         git checkout HEAD^ &&
 235         test_seq 5 >test &&
 236         git commit -a -m empty2 &&
 237         test_must_fail git merge side1 &&
 238         >test &&
 239         git commit -a -m merge &&
 240         git show >actual.tmp &&
 241         sed -e "1,/^@@@/d" < actual.tmp >actual &&
 242         tr -d Q <<-\EOF >expected &&
 243         --1
 244         --2
 245         --3
 246         --4
 247         - 5
 248         EOF
 249         compare_diff_patch expected actual
 250 '
 251
 252 test_expect_success 'combine diff coalesce tricky' '
 253         >test &&
 254         git add test &&
 255         git commit -m initial --allow-empty &&
 256         cat <<-\EOF >test &&
 257         3
 258         1
 259         2
 260         3
 261         4
 262         EOF
 263         git commit -a -m empty1 &&
 264         git branch -f side1 &&
 265         git checkout HEAD^ &&
 266         cat <<-\EOF >test &&
 267         1
 268         3
 269         5
 270         4
 271         EOF
 272         git commit -a -m empty2 &&
 273         git branch -f side2 &&
 274         test_must_fail git merge side1 &&
 275         >test &&
 276         git commit -a -m merge &&
 277         git show >actual.tmp &&
 278         sed -e "1,/^@@@/d" < actual.tmp >actual &&
 279         tr -d Q <<-\EOF >expected &&
 280          -3
 281         --1
 282          -2
 283         --3
 284         - 5
 285         --4
 286         EOF
 287         compare_diff_patch expected actual &&
 288         git checkout -f side1 &&
 289         test_must_fail git merge side2 &&
 290         >test &&
 291         git commit -a -m merge &&
 292         git show >actual.tmp &&
 293         sed -e "1,/^@@@/d" < actual.tmp >actual &&
 294         tr -d Q <<-\EOF >expected &&
 295         - 3
 296         --1
 297         - 2
 298         --3
 299          -5
 300         --4
 301         EOF
 302         compare_diff_patch expected actual
 303 '
 304
 305 test_expect_failure 'combine diff coalesce three parents' '
 306         >test &&
 307         git add test &&
 308         git commit -m initial --allow-empty &&
 309         cat <<-\EOF >test &&
 310         3
 311         1
 312         2
 313         3
 314         4
 315         EOF
 316         git commit -a -m empty1 &&
 317         git checkout -B side1 &&
 318         git checkout HEAD^ &&
 319         cat <<-\EOF >test &&
 320         1
 321         3
 322         7
 323         5
 324         4
 325         EOF
 326         git commit -a -m empty2 &&
 327         git branch -f side2 &&
 328         git checkout HEAD^ &&
 329         cat <<-\EOF >test &&
 330         3
 331         1
 332         6
 333         5
 334         4
 335         EOF
 336         git commit -a -m empty3 &&
 337         >test &&
 338         git add test &&
 339         TREE=$(git write-tree) &&
 340         COMMIT=$(git commit-tree -p HEAD -p side1 -p side2 -m merge $TREE) &&
 341         git show $COMMIT >actual.tmp &&
 342         sed -e "1,/^@@@/d" < actual.tmp >actual &&
 343         tr -d Q <<-\EOF >expected &&
 344         -- 3
 345         ---1
 346         -  6
 347          - 2
 348          --3
 349           -7
 350         - -5
 351         ---4
 352         EOF
 353         compare_diff_patch expected actual
 354 '
 355
 356 # Test for a bug reported at
 357 # https://public-inbox.org/git/20130515143508.GO25742@login.drsnuggles.stderr.nl/
 358 # where a delete lines were missing from combined diff output when they
 359 # occurred exactly before the context lines of a later change.
 360 test_expect_success 'combine diff missing delete bug' '
 361         git commit -m initial --allow-empty &&
 362         cat <<-\EOF >test &&
 363         1
 364         2
 365         3
 366         4
 367         EOF
 368         git add test &&
 369         git commit -a -m side1 &&
 370         git checkout -B side1 &&
 371         git checkout HEAD^ &&
 372         cat <<-\EOF >test &&
 373         0
 374         1
 375         2
 376         3
 377         4modified
 378         EOF
 379         git add test &&
 380         git commit -m side2 &&
 381         git branch -f side2 &&
 382         test_must_fail git merge --no-commit side1 &&
 383         cat <<-\EOF >test &&
 384         1
 385         2
 386         3
 387         4modified
 388         EOF
 389         git add test &&
 390         git commit -a -m merge &&
 391         git diff-tree -c -p HEAD >actual.tmp &&
 392         sed -e "1,/^@@@/d" < actual.tmp >actual &&
 393         tr -d Q <<-\EOF >expected &&
 394         - 0
 395           1
 396           2
 397           3
 398          -4
 399          +4modified
 400         EOF
 401         compare_diff_patch expected actual
 402 '
 403
 404 test_expect_success 'combine diff gets tree sorting right' '
 405         # create a directory and a file that sort differently in trees
 406         # versus byte-wise (implied "/" sorts after ".")
 407         git checkout -f master &&
 408         mkdir foo &&
 409         echo base >foo/one &&
 410         echo base >foo/two &&
 411         echo base >foo.ext &&
 412         git add foo foo.ext &&
 413         git commit -m base &&
 414
 415         # one side modifies a file in the directory, along with the root
 416         # file...
 417         echo master >foo/one &&
 418         echo master >foo.ext &&
 419         git commit -a -m master &&
 420
 421         # the other side modifies the other file in the directory
 422         git checkout -b other HEAD^ &&
 423         echo other >foo/two &&
 424         git commit -a -m other &&
 425
 426         # And now we merge. The files in the subdirectory will resolve cleanly,
 427         # meaning that a combined diff will not find them interesting. But it
 428         # will find the tree itself interesting, because it had to be merged.
 429         git checkout master &&
 430         git merge other &&
 431
 432         printf "MM\tfoo\n" >expect &&
 433         git diff-tree -c --name-status -t HEAD >actual.tmp &&
 434         sed 1d <actual.tmp >actual &&
 435         test_cmp expect actual
 436 '
 437
 438 test_done