t/t4038-diff-combined.sh

   1 #!/bin/sh
   2
   3 test_description='combined diff'
   4
   5 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
   6 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
   7
   8 . ./test-lib.sh
   9 . "$TEST_DIRECTORY"/lib-diff.sh
  10
  11 setup_helper () {
  12         one=$1 branch=$2 side=$3 &&
  13
  14         git branch $side $branch &&
  15         for l in $one two three fyra
  16         do
  17                 echo $l
  18         done >file &&
  19         git add file &&
  20         test_tick &&
  21         git commit -m $branch &&
  22         git checkout $side &&
  23         for l in $one two three quatro
  24         do
  25                 echo $l
  26         done >file &&
  27         git add file &&
  28         test_tick &&
  29         git commit -m $side &&
  30         test_must_fail git merge $branch &&
  31         for l in $one three four
  32         do
  33                 echo $l
  34         done >file &&
  35         git add file &&
  36         test_tick &&
  37         git commit -m "merge $branch into $side"
  38 }
  39
  40 verify_helper () {
  41         it=$1 &&
  42
  43         # Ignore lines that were removed only from the other parent
  44         sed -e '
  45                 1,/^@@@/d
  46                 /^ -/d
  47                 s/^\(.\)./\1/
  48         ' "$it" >"$it.actual.1" &&
  49         sed -e '
  50                 1,/^@@@/d
  51                 /^- /d
  52                 s/^.\(.\)/\1/
  53         ' "$it" >"$it.actual.2" &&
  54
  55         git diff "$it^" "$it" -- | sed -e '1,/^@@/d' >"$it.expect.1" &&
  56         test_cmp "$it.expect.1" "$it.actual.1" &&
  57
  58         git diff "$it^2" "$it" -- | sed -e '1,/^@@/d' >"$it.expect.2" &&
  59         test_cmp "$it.expect.2" "$it.actual.2"
  60 }
  61
  62 test_expect_success setup '
  63         >file &&
  64         git add file &&
  65         test_tick &&
  66         git commit -m initial &&
  67
  68         git branch withone &&
  69         git branch sansone &&
  70
  71         git checkout withone &&
  72         setup_helper one withone sidewithone &&
  73
  74         git checkout sansone &&
  75         setup_helper "" sansone sidesansone
  76 '
  77
  78 test_expect_success 'check combined output (1)' '
  79         git show sidewithone -- >sidewithone &&
  80         verify_helper sidewithone
  81 '
  82
  83 test_expect_success 'check combined output (2)' '
  84         git show sidesansone -- >sidesansone &&
  85         verify_helper sidesansone
  86 '
  87
  88 test_expect_success 'diagnose truncated file' '
  89         >file &&
  90         git add file &&
  91         git commit --amend -C HEAD &&
  92         git show >out &&
  93         grep "diff --cc file" out
  94 '
  95
  96 test_expect_success 'setup for --cc --raw' '
  97         blob=$(echo file | git hash-object --stdin -w) &&
  98         base_tree=$(echo "100644 blob $blob     file" | git mktree) &&
  99         trees= &&
 100         for i in $(test_seq 1 40)
 101         do
 102                 blob=$(echo file$i | git hash-object --stdin -w) &&
 103                 trees="$trees$(echo "100644 blob $blob  file" | git mktree)$LF" || return 1
 104         done
 105 '
 106
 107 test_expect_success 'check --cc --raw with four trees' '
 108         four_trees=$(echo "$trees" | sed -e 4q) &&
 109         git diff --cc --raw $four_trees $base_tree >out &&
 110         # Check for four leading colons in the output:
 111         grep "^::::[^:]" out
 112 '
 113
 114 test_expect_success 'check --cc --raw with forty trees' '
 115         git diff --cc --raw $trees $base_tree >out &&
 116         # Check for forty leading colons in the output:
 117         grep "^::::::::::::::::::::::::::::::::::::::::[^:]" out
 118 '
 119
 120 test_expect_success 'setup combined ignore spaces' '
 121         git checkout main &&
 122         >test &&
 123         git add test &&
 124         git commit -m initial &&
 125
 126         tr -d Q <<-\EOF >test &&
 127         always coalesce
 128         eol space coalesce Q
 129         space  change coalesce
 130         all spa ces coalesce
 131         eol spaces Q
 132         space  change
 133         all spa ces
 134         EOF
 135         git commit -m "test space change" -a &&
 136
 137         git checkout -b side HEAD^ &&
 138         tr -d Q <<-\EOF >test &&
 139         always coalesce
 140         eol space coalesce
 141         space change coalesce
 142         all spaces coalesce
 143         eol spaces
 144         space change
 145         all spaces
 146         EOF
 147         git commit -m "test other space changes" -a &&
 148
 149         test_must_fail git merge main &&
 150         tr -d Q <<-\EOF >test &&
 151         eol spaces Q
 152         space  change
 153         all spa ces
 154         EOF
 155         git commit -m merged -a
 156 '
 157
 158 test_expect_success 'check combined output (no ignore space)' '
 159         git show >actual.tmp &&
 160         sed -e "1,/^@@@/d" < actual.tmp >actual &&
 161         tr -d Q <<-\EOF >expected &&
 162         --always coalesce
 163         - eol space coalesce
 164         - space change coalesce
 165         - all spaces coalesce
 166         - eol spaces
 167         - space change
 168         - all spaces
 169          -eol space coalesce Q
 170          -space  change coalesce
 171          -all spa ces coalesce
 172         + eol spaces Q
 173         + space  change
 174         + all spa ces
 175         EOF
 176         compare_diff_patch expected actual
 177 '
 178
 179 test_expect_success 'check combined output (ignore space at eol)' '
 180         git show --ignore-space-at-eol >actual.tmp &&
 181         sed -e "1,/^@@@/d" < actual.tmp >actual &&
 182         tr -d Q <<-\EOF >expected &&
 183         --always coalesce
 184         --eol space coalesce
 185         - space change coalesce
 186         - all spaces coalesce
 187          -space  change coalesce
 188          -all spa ces coalesce
 189           eol spaces Q
 190         - space change
 191         - all spaces
 192         + space  change
 193         + all spa ces
 194         EOF
 195         compare_diff_patch expected actual
 196 '
 197
 198 test_expect_success 'check combined output (ignore space change)' '
 199         git show -b >actual.tmp &&
 200         sed -e "1,/^@@@/d" < actual.tmp >actual &&
 201         tr -d Q <<-\EOF >expected &&
 202         --always coalesce
 203         --eol space coalesce
 204         --space change coalesce
 205         - all spaces coalesce
 206          -all spa ces coalesce
 207           eol spaces Q
 208           space  change
 209         - all spaces
 210         + all spa ces
 211         EOF
 212         compare_diff_patch expected actual
 213 '
 214
 215 test_expect_success 'check combined output (ignore all spaces)' '
 216         git show -w >actual.tmp &&
 217         sed -e "1,/^@@@/d" < actual.tmp >actual &&
 218         tr -d Q <<-\EOF >expected &&
 219         --always coalesce
 220         --eol space coalesce
 221         --space change coalesce
 222         --all spaces coalesce
 223           eol spaces Q
 224           space  change
 225           all spa ces
 226         EOF
 227         compare_diff_patch expected actual
 228 '
 229
 230 test_expect_success 'combine diff coalesce simple' '
 231         >test &&
 232         git add test &&
 233         git commit -m initial &&
 234         test_seq 4 >test &&
 235         git commit -a -m empty1 &&
 236         git branch side1 &&
 237         git checkout HEAD^ &&
 238         test_seq 5 >test &&
 239         git commit -a -m empty2 &&
 240         test_must_fail git merge side1 &&
 241         >test &&
 242         git commit -a -m merge &&
 243         git show >actual.tmp &&
 244         sed -e "1,/^@@@/d" < actual.tmp >actual &&
 245         tr -d Q <<-\EOF >expected &&
 246         --1
 247         --2
 248         --3
 249         --4
 250         - 5
 251         EOF
 252         compare_diff_patch expected actual
 253 '
 254
 255 test_expect_success 'combine diff coalesce tricky' '
 256         >test &&
 257         git add test &&
 258         git commit -m initial --allow-empty &&
 259         cat <<-\EOF >test &&
 260         3
 261         1
 262         2
 263         3
 264         4
 265         EOF
 266         git commit -a -m empty1 &&
 267         git branch -f side1 &&
 268         git checkout HEAD^ &&
 269         cat <<-\EOF >test &&
 270         1
 271         3
 272         5
 273         4
 274         EOF
 275         git commit -a -m empty2 &&
 276         git branch -f side2 &&
 277         test_must_fail git merge side1 &&
 278         >test &&
 279         git commit -a -m merge &&
 280         git show >actual.tmp &&
 281         sed -e "1,/^@@@/d" < actual.tmp >actual &&
 282         tr -d Q <<-\EOF >expected &&
 283          -3
 284         --1
 285          -2
 286         --3
 287         - 5
 288         --4
 289         EOF
 290         compare_diff_patch expected actual &&
 291         git checkout -f side1 &&
 292         test_must_fail git merge side2 &&
 293         >test &&
 294         git commit -a -m merge &&
 295         git show >actual.tmp &&
 296         sed -e "1,/^@@@/d" < actual.tmp >actual &&
 297         tr -d Q <<-\EOF >expected &&
 298         - 3
 299         --1
 300         - 2
 301         --3
 302          -5
 303         --4
 304         EOF
 305         compare_diff_patch expected actual
 306 '
 307
 308 test_expect_failure 'combine diff coalesce three parents' '
 309         >test &&
 310         git add test &&
 311         git commit -m initial --allow-empty &&
 312         cat <<-\EOF >test &&
 313         3
 314         1
 315         2
 316         3
 317         4
 318         EOF
 319         git commit -a -m empty1 &&
 320         git checkout -B side1 &&
 321         git checkout HEAD^ &&
 322         cat <<-\EOF >test &&
 323         1
 324         3
 325         7
 326         5
 327         4
 328         EOF
 329         git commit -a -m empty2 &&
 330         git branch -f side2 &&
 331         git checkout HEAD^ &&
 332         cat <<-\EOF >test &&
 333         3
 334         1
 335         6
 336         5
 337         4
 338         EOF
 339         git commit -a -m empty3 &&
 340         >test &&
 341         git add test &&
 342         TREE=$(git write-tree) &&
 343         COMMIT=$(git commit-tree -p HEAD -p side1 -p side2 -m merge $TREE) &&
 344         git show $COMMIT >actual.tmp &&
 345         sed -e "1,/^@@@/d" < actual.tmp >actual &&
 346         tr -d Q <<-\EOF >expected &&
 347         -- 3
 348         ---1
 349         -  6
 350          - 2
 351          --3
 352           -7
 353         - -5
 354         ---4
 355         EOF
 356         compare_diff_patch expected actual
 357 '
 358
 359 # Test for a bug reported at
 360 # https://lore.kernel.org/git/20130515143508.GO25742@login.drsnuggles.stderr.nl/
 361 # where a delete lines were missing from combined diff output when they
 362 # occurred exactly before the context lines of a later change.
 363 test_expect_success 'combine diff missing delete bug' '
 364         git commit -m initial --allow-empty &&
 365         cat <<-\EOF >test &&
 366         1
 367         2
 368         3
 369         4
 370         EOF
 371         git add test &&
 372         git commit -a -m side1 &&
 373         git checkout -B side1 &&
 374         git checkout HEAD^ &&
 375         cat <<-\EOF >test &&
 376         0
 377         1
 378         2
 379         3
 380         4modified
 381         EOF
 382         git add test &&
 383         git commit -m side2 &&
 384         git branch -f side2 &&
 385         test_must_fail git merge --no-commit side1 &&
 386         cat <<-\EOF >test &&
 387         1
 388         2
 389         3
 390         4modified
 391         EOF
 392         git add test &&
 393         git commit -a -m merge &&
 394         git diff-tree -c -p HEAD >actual.tmp &&
 395         sed -e "1,/^@@@/d" < actual.tmp >actual &&
 396         tr -d Q <<-\EOF >expected &&
 397         - 0
 398           1
 399           2
 400           3
 401          -4
 402          +4modified
 403         EOF
 404         compare_diff_patch expected actual
 405 '
 406
 407 test_expect_success 'combine diff gets tree sorting right' '
 408         # create a directory and a file that sort differently in trees
 409         # versus byte-wise (implied "/" sorts after ".")
 410         git checkout -f main &&
 411         mkdir foo &&
 412         echo base >foo/one &&
 413         echo base >foo/two &&
 414         echo base >foo.ext &&
 415         git add foo foo.ext &&
 416         git commit -m base &&
 417
 418         # one side modifies a file in the directory, along with the root
 419         # file...
 420         echo main >foo/one &&
 421         echo main >foo.ext &&
 422         git commit -a -m main &&
 423
 424         # the other side modifies the other file in the directory
 425         git checkout -b other HEAD^ &&
 426         echo other >foo/two &&
 427         git commit -a -m other &&
 428
 429         # And now we merge. The files in the subdirectory will resolve cleanly,
 430         # meaning that a combined diff will not find them interesting. But it
 431         # will find the tree itself interesting, because it had to be merged.
 432         git checkout main &&
 433         git merge other &&
 434
 435         printf "MM\tfoo\n" >expect &&
 436         git diff-tree -c --name-status -t HEAD >actual.tmp &&
 437         sed 1d <actual.tmp >actual &&
 438         test_cmp expect actual
 439 '
 440
 441 test_expect_success 'setup for --combined-all-paths' '
 442         git branch side1c &&
 443         git branch side2c &&
 444         git checkout side1c &&
 445         test_seq 1 10 >filename-side1c &&
 446         side1cf=$(git hash-object filename-side1c) &&
 447         git add filename-side1c &&
 448         git commit -m with &&
 449         git checkout side2c &&
 450         test_seq 1 9 >filename-side2c &&
 451         echo ten >>filename-side2c &&
 452         side2cf=$(git hash-object filename-side2c) &&
 453         git add filename-side2c &&
 454         git commit -m iam &&
 455         git checkout -b mergery side1c &&
 456         git merge --no-commit side2c &&
 457         git rm filename-side1c &&
 458         echo eleven >>filename-side2c &&
 459         git mv filename-side2c filename-merged &&
 460         mergedf=$(git hash-object filename-merged) &&
 461         git add filename-merged &&
 462         git commit
 463 '
 464
 465 test_expect_success '--combined-all-paths and --raw' '
 466         cat <<-EOF >expect &&
 467         ::100644 100644 100644 $side1cf $side2cf $mergedf RR    filename-side1c filename-side2c filename-merged
 468         EOF
 469         git diff-tree -c -M --raw --combined-all-paths HEAD >actual.tmp &&
 470         sed 1d <actual.tmp >actual &&
 471         test_cmp expect actual
 472 '
 473
 474 test_expect_success '--combined-all-paths and --cc' '
 475         cat <<-\EOF >expect &&
 476         --- a/filename-side1c
 477         --- a/filename-side2c
 478         +++ b/filename-merged
 479         EOF
 480         git diff-tree --cc -M --combined-all-paths HEAD >actual.tmp &&
 481         grep ^[-+][-+][-+] <actual.tmp >actual &&
 482         test_cmp expect actual
 483 '
 484
 485 test_expect_success FUNNYNAMES 'setup for --combined-all-paths with funny names' '
 486         git branch side1d &&
 487         git branch side2d &&
 488         git checkout side1d &&
 489         test_seq 1 10 >"$(printf "file\twith\ttabs")" &&
 490         git add file* &&
 491         side1df=$(git hash-object *tabs) &&
 492         git commit -m with &&
 493         git checkout side2d &&
 494         test_seq 1 9 >"$(printf "i\tam\ttabbed")" &&
 495         echo ten >>"$(printf "i\tam\ttabbed")" &&
 496         git add *tabbed &&
 497         side2df=$(git hash-object *tabbed) &&
 498         git commit -m iam &&
 499         git checkout -b funny-names-mergery side1d &&
 500         git merge --no-commit side2d &&
 501         git rm *tabs &&
 502         echo eleven >>"$(printf "i\tam\ttabbed")" &&
 503         git mv "$(printf "i\tam\ttabbed")" "$(printf "fickle\tnaming")" &&
 504         git add fickle* &&
 505         headf=$(git hash-object fickle*) &&
 506         git commit &&
 507         head=$(git rev-parse HEAD)
 508 '
 509
 510 test_expect_success FUNNYNAMES '--combined-all-paths and --raw and funny names' '
 511         cat <<-EOF >expect &&
 512         ::100644 100644 100644 $side1df $side2df $headf RR      "file\twith\ttabs"      "i\tam\ttabbed" "fickle\tnaming"
 513         EOF
 514         git diff-tree -c -M --raw --combined-all-paths HEAD >actual.tmp &&
 515         sed 1d <actual.tmp >actual &&
 516         test_cmp expect actual
 517 '
 518
 519 test_expect_success FUNNYNAMES '--combined-all-paths and --raw -and -z and funny names' '
 520         printf "$head\0::100644 100644 100644 $side1df $side2df $headf RR\0file\twith\ttabs\0i\tam\ttabbed\0fickle\tnaming\0" >expect &&
 521         git diff-tree -c -M --raw --combined-all-paths -z HEAD >actual &&
 522         test_cmp expect actual
 523 '
 524
 525 test_expect_success FUNNYNAMES '--combined-all-paths and --cc and funny names' '
 526         cat <<-\EOF >expect &&
 527         --- "a/file\twith\ttabs"
 528         --- "a/i\tam\ttabbed"
 529         +++ "b/fickle\tnaming"
 530         EOF
 531         git diff-tree --cc -M --combined-all-paths HEAD >actual.tmp &&
 532         grep ^[-+][-+][-+] <actual.tmp >actual &&
 533         test_cmp expect actual
 534 '
 535
 536 test_done