t/t4060-diff-submodule-option-diff-format.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2009 Jens Lehmann, based on t7401 by Ping Yin
   4 # Copyright (c) 2011 Alexey Shumkin (+ non-UTF-8 commit encoding tests)
   5 # Copyright (c) 2016 Jacob Keller (copy + convert to --submodule=diff)
   6 #
   7
   8 test_description='Support for diff format verbose submodule difference in git diff
   9
  10 This test tries to verify the sanity of --submodule=diff option of git diff.
  11 '
  12
  13 . ./test-lib.sh
  14
  15 # Tested non-UTF-8 encoding
  16 test_encoding="ISO8859-1"
  17
  18 # String "added" in German (translated with Google Translate), encoded in UTF-8,
  19 # used in sample commit log messages in add_file() function below.
  20 added=$(printf "hinzugef\303\274gt")
  21
  22 add_file () {
  23         (
  24                 cd "$1" &&
  25                 shift &&
  26                 for name
  27                 do
  28                         echo "$name" >"$name" &&
  29                         git add "$name" &&
  30                         test_tick &&
  31                         # "git commit -m" would break MinGW, as Windows refuse to pass
  32                         # $test_encoding encoded parameter to git.
  33                         echo "Add $name ($added $name)" | iconv -f utf-8 -t $test_encoding |
  34                         git -c "i18n.commitEncoding=$test_encoding" commit -F -
  35                 done >/dev/null &&
  36                 git rev-parse --short --verify HEAD
  37         )
  38 }
  39
  40 commit_file () {
  41         test_tick &&
  42         git commit "$@" -m "Commit $*" >/dev/null
  43 }
  44
  45 diff_cmp () {
  46        for i in "$1" "$2"
  47        do
  48                 sed -e 's/^index 0000000\.\.[0-9a-f]*/index 0000000..1234567/' \
  49                 -e 's/^index [0-9a-f]*\.\.[0-9a-f]*/index 1234567..89abcde/' \
  50                 "$i" >"$i.compare" || return 1
  51        done &&
  52        test_cmp "$1.compare" "$2.compare" &&
  53        rm -f "$1.compare" "$2.compare"
  54 }
  55
  56 test_expect_success 'setup repository' '
  57         test_create_repo sm1 &&
  58         add_file . foo &&
  59         head1=$(add_file sm1 foo1 foo2) &&
  60         fullhead1=$(git -C sm1 rev-parse --verify HEAD)
  61 '
  62
  63 test_expect_success 'added submodule' '
  64         git add sm1 &&
  65         git diff-index -p --submodule=diff HEAD >actual &&
  66         cat >expected <<-EOF &&
  67         Submodule sm1 0000000...$head1 (new submodule)
  68         diff --git a/sm1/foo1 b/sm1/foo1
  69         new file mode 100644
  70         index 0000000..1715acd
  71         --- /dev/null
  72         +++ b/sm1/foo1
  73         @@ -0,0 +1 @@
  74         +foo1
  75         diff --git a/sm1/foo2 b/sm1/foo2
  76         new file mode 100644
  77         index 0000000..54b060e
  78         --- /dev/null
  79         +++ b/sm1/foo2
  80         @@ -0,0 +1 @@
  81         +foo2
  82         EOF
  83         diff_cmp expected actual
  84 '
  85
  86 test_expect_success 'added submodule, set diff.submodule' '
  87         test_config diff.submodule log &&
  88         git add sm1 &&
  89         git diff-index -p --submodule=diff HEAD >actual &&
  90         cat >expected <<-EOF &&
  91         Submodule sm1 0000000...$head1 (new submodule)
  92         diff --git a/sm1/foo1 b/sm1/foo1
  93         new file mode 100644
  94         index 0000000..1715acd
  95         --- /dev/null
  96         +++ b/sm1/foo1
  97         @@ -0,0 +1 @@
  98         +foo1
  99         diff --git a/sm1/foo2 b/sm1/foo2
 100         new file mode 100644
 101         index 0000000..54b060e
 102         --- /dev/null
 103         +++ b/sm1/foo2
 104         @@ -0,0 +1 @@
 105         +foo2
 106         EOF
 107         diff_cmp expected actual
 108 '
 109
 110 test_expect_success '--submodule=short overrides diff.submodule' '
 111         test_config diff.submodule log &&
 112         git add sm1 &&
 113         git diff --submodule=short --cached >actual &&
 114         cat >expected <<-EOF &&
 115         diff --git a/sm1 b/sm1
 116         new file mode 160000
 117         index 0000000..$head1
 118         --- /dev/null
 119         +++ b/sm1
 120         @@ -0,0 +1 @@
 121         +Subproject commit $fullhead1
 122         EOF
 123         diff_cmp expected actual
 124 '
 125
 126 test_expect_success 'diff.submodule does not affect plumbing' '
 127         test_config diff.submodule log &&
 128         git diff-index -p HEAD >actual &&
 129         cat >expected <<-EOF &&
 130         diff --git a/sm1 b/sm1
 131         new file mode 160000
 132         index 0000000..$head1
 133         --- /dev/null
 134         +++ b/sm1
 135         @@ -0,0 +1 @@
 136         +Subproject commit $fullhead1
 137         EOF
 138         diff_cmp expected actual
 139 '
 140
 141 commit_file sm1 &&
 142 head2=$(add_file sm1 foo3)
 143
 144 test_expect_success 'modified submodule(forward)' '
 145         git diff-index -p --submodule=diff HEAD >actual &&
 146         cat >expected <<-EOF &&
 147         Submodule sm1 $head1..$head2:
 148         diff --git a/sm1/foo3 b/sm1/foo3
 149         new file mode 100644
 150         index 0000000..c1ec6c6
 151         --- /dev/null
 152         +++ b/sm1/foo3
 153         @@ -0,0 +1 @@
 154         +foo3
 155         EOF
 156         diff_cmp expected actual
 157 '
 158
 159 test_expect_success 'modified submodule(forward)' '
 160         git diff --submodule=diff >actual &&
 161         cat >expected <<-EOF &&
 162         Submodule sm1 $head1..$head2:
 163         diff --git a/sm1/foo3 b/sm1/foo3
 164         new file mode 100644
 165         index 0000000..c1ec6c6
 166         --- /dev/null
 167         +++ b/sm1/foo3
 168         @@ -0,0 +1 @@
 169         +foo3
 170         EOF
 171         diff_cmp expected actual
 172 '
 173
 174 test_expect_success 'modified submodule(forward) --submodule' '
 175         git diff --submodule >actual &&
 176         cat >expected <<-EOF &&
 177         Submodule sm1 $head1..$head2:
 178           > Add foo3 ($added foo3)
 179         EOF
 180         diff_cmp expected actual
 181 '
 182
 183 fullhead2=$(cd sm1; git rev-parse --verify HEAD)
 184 test_expect_success 'modified submodule(forward) --submodule=short' '
 185         git diff --submodule=short >actual &&
 186         cat >expected <<-EOF &&
 187         diff --git a/sm1 b/sm1
 188         index $head1..$head2 160000
 189         --- a/sm1
 190         +++ b/sm1
 191         @@ -1 +1 @@
 192         -Subproject commit $fullhead1
 193         +Subproject commit $fullhead2
 194         EOF
 195         diff_cmp expected actual
 196 '
 197
 198 commit_file sm1 &&
 199 head3=$(
 200         cd sm1 &&
 201         git reset --hard HEAD~2 >/dev/null &&
 202         git rev-parse --short --verify HEAD
 203 )
 204
 205 test_expect_success 'modified submodule(backward)' '
 206         git diff-index -p --submodule=diff HEAD >actual &&
 207         cat >expected <<-EOF &&
 208         Submodule sm1 $head2..$head3 (rewind):
 209         diff --git a/sm1/foo2 b/sm1/foo2
 210         deleted file mode 100644
 211         index 54b060e..0000000
 212         --- a/sm1/foo2
 213         +++ /dev/null
 214         @@ -1 +0,0 @@
 215         -foo2
 216         diff --git a/sm1/foo3 b/sm1/foo3
 217         deleted file mode 100644
 218         index c1ec6c6..0000000
 219         --- a/sm1/foo3
 220         +++ /dev/null
 221         @@ -1 +0,0 @@
 222         -foo3
 223         EOF
 224         diff_cmp expected actual
 225 '
 226
 227 head4=$(add_file sm1 foo4 foo5)
 228 test_expect_success 'modified submodule(backward and forward)' '
 229         git diff-index -p --submodule=diff HEAD >actual &&
 230         cat >expected <<-EOF &&
 231         Submodule sm1 $head2...$head4:
 232         diff --git a/sm1/foo2 b/sm1/foo2
 233         deleted file mode 100644
 234         index 54b060e..0000000
 235         --- a/sm1/foo2
 236         +++ /dev/null
 237         @@ -1 +0,0 @@
 238         -foo2
 239         diff --git a/sm1/foo3 b/sm1/foo3
 240         deleted file mode 100644
 241         index c1ec6c6..0000000
 242         --- a/sm1/foo3
 243         +++ /dev/null
 244         @@ -1 +0,0 @@
 245         -foo3
 246         diff --git a/sm1/foo4 b/sm1/foo4
 247         new file mode 100644
 248         index 0000000..a0016db
 249         --- /dev/null
 250         +++ b/sm1/foo4
 251         @@ -0,0 +1 @@
 252         +foo4
 253         diff --git a/sm1/foo5 b/sm1/foo5
 254         new file mode 100644
 255         index 0000000..d6f2413
 256         --- /dev/null
 257         +++ b/sm1/foo5
 258         @@ -0,0 +1 @@
 259         +foo5
 260         EOF
 261         diff_cmp expected actual
 262 '
 263
 264 commit_file sm1 &&
 265 mv sm1 sm1-bak &&
 266 echo sm1 >sm1 &&
 267 head5=$(git hash-object sm1 | cut -c1-7) &&
 268 git add sm1 &&
 269 rm -f sm1 &&
 270 mv sm1-bak sm1
 271
 272 test_expect_success 'typechanged submodule(submodule->blob), --cached' '
 273         git diff --submodule=diff --cached >actual &&
 274         cat >expected <<-EOF &&
 275         Submodule sm1 $head4...0000000 (submodule deleted)
 276         diff --git a/sm1/foo1 b/sm1/foo1
 277         deleted file mode 100644
 278         index 1715acd..0000000
 279         --- a/sm1/foo1
 280         +++ /dev/null
 281         @@ -1 +0,0 @@
 282         -foo1
 283         diff --git a/sm1/foo4 b/sm1/foo4
 284         deleted file mode 100644
 285         index a0016db..0000000
 286         --- a/sm1/foo4
 287         +++ /dev/null
 288         @@ -1 +0,0 @@
 289         -foo4
 290         diff --git a/sm1/foo5 b/sm1/foo5
 291         deleted file mode 100644
 292         index d6f2413..0000000
 293         --- a/sm1/foo5
 294         +++ /dev/null
 295         @@ -1 +0,0 @@
 296         -foo5
 297         diff --git a/sm1 b/sm1
 298         new file mode 100644
 299         index 0000000..9da5fb8
 300         --- /dev/null
 301         +++ b/sm1
 302         @@ -0,0 +1 @@
 303         +sm1
 304         EOF
 305         diff_cmp expected actual
 306 '
 307
 308 test_expect_success 'typechanged submodule(submodule->blob)' '
 309         git diff --submodule=diff >actual &&
 310         cat >expected <<-EOF &&
 311         diff --git a/sm1 b/sm1
 312         deleted file mode 100644
 313         index 9da5fb8..0000000
 314         --- a/sm1
 315         +++ /dev/null
 316         @@ -1 +0,0 @@
 317         -sm1
 318         Submodule sm1 0000000...$head4 (new submodule)
 319         diff --git a/sm1/foo1 b/sm1/foo1
 320         new file mode 100644
 321         index 0000000..1715acd
 322         --- /dev/null
 323         +++ b/sm1/foo1
 324         @@ -0,0 +1 @@
 325         +foo1
 326         diff --git a/sm1/foo4 b/sm1/foo4
 327         new file mode 100644
 328         index 0000000..a0016db
 329         --- /dev/null
 330         +++ b/sm1/foo4
 331         @@ -0,0 +1 @@
 332         +foo4
 333         diff --git a/sm1/foo5 b/sm1/foo5
 334         new file mode 100644
 335         index 0000000..d6f2413
 336         --- /dev/null
 337         +++ b/sm1/foo5
 338         @@ -0,0 +1 @@
 339         +foo5
 340         EOF
 341         diff_cmp expected actual
 342 '
 343
 344 rm -rf sm1 &&
 345 git checkout-index sm1
 346 test_expect_success 'typechanged submodule(submodule->blob)' '
 347         git diff-index -p --submodule=diff HEAD >actual &&
 348         cat >expected <<-EOF &&
 349         Submodule sm1 $head4...0000000 (submodule deleted)
 350         diff --git a/sm1 b/sm1
 351         new file mode 100644
 352         index 0000000..9da5fb8
 353         --- /dev/null
 354         +++ b/sm1
 355         @@ -0,0 +1 @@
 356         +sm1
 357         EOF
 358         diff_cmp expected actual
 359 '
 360
 361 rm -f sm1 &&
 362 test_create_repo sm1 &&
 363 head6=$(add_file sm1 foo6 foo7)
 364 fullhead6=$(cd sm1; git rev-parse --verify HEAD)
 365 test_expect_success 'nonexistent commit' '
 366         git diff-index -p --submodule=diff HEAD >actual &&
 367         cat >expected <<-EOF &&
 368         Submodule sm1 $head4...$head6 (commits not present)
 369         EOF
 370         diff_cmp expected actual
 371 '
 372
 373 commit_file
 374 test_expect_success 'typechanged submodule(blob->submodule)' '
 375         git diff-index -p --submodule=diff HEAD >actual &&
 376         cat >expected <<-EOF &&
 377         diff --git a/sm1 b/sm1
 378         deleted file mode 100644
 379         index 9da5fb8..0000000
 380         --- a/sm1
 381         +++ /dev/null
 382         @@ -1 +0,0 @@
 383         -sm1
 384         Submodule sm1 0000000...$head6 (new submodule)
 385         diff --git a/sm1/foo6 b/sm1/foo6
 386         new file mode 100644
 387         index 0000000..462398b
 388         --- /dev/null
 389         +++ b/sm1/foo6
 390         @@ -0,0 +1 @@
 391         +foo6
 392         diff --git a/sm1/foo7 b/sm1/foo7
 393         new file mode 100644
 394         index 0000000..6e9262c
 395         --- /dev/null
 396         +++ b/sm1/foo7
 397         @@ -0,0 +1 @@
 398         +foo7
 399         EOF
 400         diff_cmp expected actual
 401 '
 402
 403 commit_file sm1 &&
 404 test_expect_success 'submodule is up to date' '
 405         head7=$(git -C sm1 rev-parse --short --verify HEAD) &&
 406         git diff-index -p --submodule=diff HEAD >actual &&
 407         test_must_be_empty actual
 408 '
 409
 410 test_expect_success 'submodule contains untracked content' '
 411         echo new > sm1/new-file &&
 412         git diff-index -p --submodule=diff HEAD >actual &&
 413         cat >expected <<-EOF &&
 414         Submodule sm1 contains untracked content
 415         EOF
 416         diff_cmp expected actual
 417 '
 418
 419 test_expect_success 'submodule contains untracked content (untracked ignored)' '
 420         git diff-index -p --ignore-submodules=untracked --submodule=diff HEAD >actual &&
 421         test_must_be_empty actual
 422 '
 423
 424 test_expect_success 'submodule contains untracked content (dirty ignored)' '
 425         git diff-index -p --ignore-submodules=dirty --submodule=diff HEAD >actual &&
 426         test_must_be_empty actual
 427 '
 428
 429 test_expect_success 'submodule contains untracked content (all ignored)' '
 430         git diff-index -p --ignore-submodules=all --submodule=diff HEAD >actual &&
 431         test_must_be_empty actual
 432 '
 433
 434 test_expect_success 'submodule contains untracked and modified content' '
 435         echo new > sm1/foo6 &&
 436         git diff-index -p --submodule=diff HEAD >actual &&
 437         cat >expected <<-EOF &&
 438         Submodule sm1 contains untracked content
 439         Submodule sm1 contains modified content
 440         diff --git a/sm1/foo6 b/sm1/foo6
 441         index 462398b..3e75765 100644
 442         --- a/sm1/foo6
 443         +++ b/sm1/foo6
 444         @@ -1 +1 @@
 445         -foo6
 446         +new
 447         EOF
 448         diff_cmp expected actual
 449 '
 450
 451 # NOT OK
 452 test_expect_success 'submodule contains untracked and modified content (untracked ignored)' '
 453         echo new > sm1/foo6 &&
 454         git diff-index -p --ignore-submodules=untracked --submodule=diff HEAD >actual &&
 455         cat >expected <<-EOF &&
 456         Submodule sm1 contains modified content
 457         diff --git a/sm1/foo6 b/sm1/foo6
 458         index 462398b..3e75765 100644
 459         --- a/sm1/foo6
 460         +++ b/sm1/foo6
 461         @@ -1 +1 @@
 462         -foo6
 463         +new
 464         EOF
 465         diff_cmp expected actual
 466 '
 467
 468 test_expect_success 'submodule contains untracked and modified content (dirty ignored)' '
 469         echo new > sm1/foo6 &&
 470         git diff-index -p --ignore-submodules=dirty --submodule=diff HEAD >actual &&
 471         test_must_be_empty actual
 472 '
 473
 474 test_expect_success 'submodule contains untracked and modified content (all ignored)' '
 475         echo new > sm1/foo6 &&
 476         git diff-index -p --ignore-submodules --submodule=diff HEAD >actual &&
 477         test_must_be_empty actual
 478 '
 479
 480 test_expect_success 'submodule contains modified content' '
 481         rm -f sm1/new-file &&
 482         git diff-index -p --submodule=diff HEAD >actual &&
 483         cat >expected <<-EOF &&
 484         Submodule sm1 contains modified content
 485         diff --git a/sm1/foo6 b/sm1/foo6
 486         index 462398b..3e75765 100644
 487         --- a/sm1/foo6
 488         +++ b/sm1/foo6
 489         @@ -1 +1 @@
 490         -foo6
 491         +new
 492         EOF
 493         diff_cmp expected actual
 494 '
 495
 496 (cd sm1; git commit -mchange foo6 >/dev/null) &&
 497 head8=$(cd sm1; git rev-parse --short --verify HEAD) &&
 498 test_expect_success 'submodule is modified' '
 499         git diff-index -p --submodule=diff HEAD >actual &&
 500         cat >expected <<-EOF &&
 501         Submodule sm1 $head7..$head8:
 502         diff --git a/sm1/foo6 b/sm1/foo6
 503         index 462398b..3e75765 100644
 504         --- a/sm1/foo6
 505         +++ b/sm1/foo6
 506         @@ -1 +1 @@
 507         -foo6
 508         +new
 509         EOF
 510         diff_cmp expected actual
 511 '
 512
 513 test_expect_success 'modified submodule contains untracked content' '
 514         echo new > sm1/new-file &&
 515         git diff-index -p --submodule=diff HEAD >actual &&
 516         cat >expected <<-EOF &&
 517         Submodule sm1 contains untracked content
 518         Submodule sm1 $head7..$head8:
 519         diff --git a/sm1/foo6 b/sm1/foo6
 520         index 462398b..3e75765 100644
 521         --- a/sm1/foo6
 522         +++ b/sm1/foo6
 523         @@ -1 +1 @@
 524         -foo6
 525         +new
 526         EOF
 527         diff_cmp expected actual
 528 '
 529
 530 test_expect_success 'modified submodule contains untracked content (untracked ignored)' '
 531         git diff-index -p --ignore-submodules=untracked --submodule=diff HEAD >actual &&
 532         cat >expected <<-EOF &&
 533         Submodule sm1 $head7..$head8:
 534         diff --git a/sm1/foo6 b/sm1/foo6
 535         index 462398b..3e75765 100644
 536         --- a/sm1/foo6
 537         +++ b/sm1/foo6
 538         @@ -1 +1 @@
 539         -foo6
 540         +new
 541         EOF
 542         diff_cmp expected actual
 543 '
 544
 545 test_expect_success 'modified submodule contains untracked content (dirty ignored)' '
 546         git diff-index -p --ignore-submodules=dirty --submodule=diff HEAD >actual &&
 547         cat >expected <<-EOF &&
 548         Submodule sm1 $head7..$head8:
 549         diff --git a/sm1/foo6 b/sm1/foo6
 550         index 462398b..3e75765 100644
 551         --- a/sm1/foo6
 552         +++ b/sm1/foo6
 553         @@ -1 +1 @@
 554         -foo6
 555         +new
 556         EOF
 557         diff_cmp expected actual
 558 '
 559
 560 test_expect_success 'modified submodule contains untracked content (all ignored)' '
 561         git diff-index -p --ignore-submodules=all --submodule=diff HEAD >actual &&
 562         test_must_be_empty actual
 563 '
 564
 565 test_expect_success 'modified submodule contains untracked and modified content' '
 566         echo modification >> sm1/foo6 &&
 567         git diff-index -p --submodule=diff HEAD >actual &&
 568         cat >expected <<-EOF &&
 569         Submodule sm1 contains untracked content
 570         Submodule sm1 contains modified content
 571         Submodule sm1 $head7..$head8:
 572         diff --git a/sm1/foo6 b/sm1/foo6
 573         index 462398b..dfda541 100644
 574         --- a/sm1/foo6
 575         +++ b/sm1/foo6
 576         @@ -1 +1,2 @@
 577         -foo6
 578         +new
 579         +modification
 580         EOF
 581         diff_cmp expected actual
 582 '
 583
 584 test_expect_success 'modified submodule contains untracked and modified content (untracked ignored)' '
 585         echo modification >> sm1/foo6 &&
 586         git diff-index -p --ignore-submodules=untracked --submodule=diff HEAD >actual &&
 587         cat >expected <<-EOF &&
 588         Submodule sm1 contains modified content
 589         Submodule sm1 $head7..$head8:
 590         diff --git a/sm1/foo6 b/sm1/foo6
 591         index 462398b..e20e2d9 100644
 592         --- a/sm1/foo6
 593         +++ b/sm1/foo6
 594         @@ -1 +1,3 @@
 595         -foo6
 596         +new
 597         +modification
 598         +modification
 599         EOF
 600         diff_cmp expected actual
 601 '
 602
 603 test_expect_success 'modified submodule contains untracked and modified content (dirty ignored)' '
 604         echo modification >> sm1/foo6 &&
 605         git diff-index -p --ignore-submodules=dirty --submodule=diff HEAD >actual &&
 606         cat >expected <<-EOF &&
 607         Submodule sm1 $head7..$head8:
 608         diff --git a/sm1/foo6 b/sm1/foo6
 609         index 462398b..3e75765 100644
 610         --- a/sm1/foo6
 611         +++ b/sm1/foo6
 612         @@ -1 +1 @@
 613         -foo6
 614         +new
 615         EOF
 616         diff_cmp expected actual
 617 '
 618
 619 test_expect_success 'modified submodule contains untracked and modified content (all ignored)' '
 620         echo modification >> sm1/foo6 &&
 621         git diff-index -p --ignore-submodules --submodule=diff HEAD >actual &&
 622         test_must_be_empty actual
 623 '
 624
 625 # NOT OK
 626 test_expect_success 'modified submodule contains modified content' '
 627         rm -f sm1/new-file &&
 628         git diff-index -p --submodule=diff HEAD >actual &&
 629         cat >expected <<-EOF &&
 630         Submodule sm1 contains modified content
 631         Submodule sm1 $head7..$head8:
 632         diff --git a/sm1/foo6 b/sm1/foo6
 633         index 462398b..ac466ca 100644
 634         --- a/sm1/foo6
 635         +++ b/sm1/foo6
 636         @@ -1 +1,5 @@
 637         -foo6
 638         +new
 639         +modification
 640         +modification
 641         +modification
 642         +modification
 643         EOF
 644         diff_cmp expected actual
 645 '
 646
 647 rm -rf sm1
 648 test_expect_success 'deleted submodule' '
 649         git diff-index -p --submodule=diff HEAD >actual &&
 650         cat >expected <<-EOF &&
 651         Submodule sm1 $head7...0000000 (submodule deleted)
 652         EOF
 653         diff_cmp expected actual
 654 '
 655
 656 test_expect_success 'create second submodule' '
 657         test_create_repo sm2 &&
 658         head9=$(add_file sm2 foo8 foo9) &&
 659         git add sm2
 660 '
 661
 662 test_expect_success 'multiple submodules' '
 663         git diff-index -p --submodule=diff HEAD >actual &&
 664         cat >expected <<-EOF &&
 665         Submodule sm1 $head7...0000000 (submodule deleted)
 666         Submodule sm2 0000000...$head9 (new submodule)
 667         diff --git a/sm2/foo8 b/sm2/foo8
 668         new file mode 100644
 669         index 0000000..db9916b
 670         --- /dev/null
 671         +++ b/sm2/foo8
 672         @@ -0,0 +1 @@
 673         +foo8
 674         diff --git a/sm2/foo9 b/sm2/foo9
 675         new file mode 100644
 676         index 0000000..9c3b4f6
 677         --- /dev/null
 678         +++ b/sm2/foo9
 679         @@ -0,0 +1 @@
 680         +foo9
 681         EOF
 682         diff_cmp expected actual
 683 '
 684
 685 test_expect_success 'path filter' '
 686         git diff-index -p --submodule=diff HEAD sm2 >actual &&
 687         cat >expected <<-EOF &&
 688         Submodule sm2 0000000...$head9 (new submodule)
 689         diff --git a/sm2/foo8 b/sm2/foo8
 690         new file mode 100644
 691         index 0000000..db9916b
 692         --- /dev/null
 693         +++ b/sm2/foo8
 694         @@ -0,0 +1 @@
 695         +foo8
 696         diff --git a/sm2/foo9 b/sm2/foo9
 697         new file mode 100644
 698         index 0000000..9c3b4f6
 699         --- /dev/null
 700         +++ b/sm2/foo9
 701         @@ -0,0 +1 @@
 702         +foo9
 703         EOF
 704         diff_cmp expected actual
 705 '
 706
 707 commit_file sm2
 708 test_expect_success 'given commit' '
 709         git diff-index -p --submodule=diff HEAD^ >actual &&
 710         cat >expected <<-EOF &&
 711         Submodule sm1 $head7...0000000 (submodule deleted)
 712         Submodule sm2 0000000...$head9 (new submodule)
 713         diff --git a/sm2/foo8 b/sm2/foo8
 714         new file mode 100644
 715         index 0000000..db9916b
 716         --- /dev/null
 717         +++ b/sm2/foo8
 718         @@ -0,0 +1 @@
 719         +foo8
 720         diff --git a/sm2/foo9 b/sm2/foo9
 721         new file mode 100644
 722         index 0000000..9c3b4f6
 723         --- /dev/null
 724         +++ b/sm2/foo9
 725         @@ -0,0 +1 @@
 726         +foo9
 727         EOF
 728         diff_cmp expected actual
 729 '
 730
 731 test_expect_success 'setup .git file for sm2' '
 732         (cd sm2 &&
 733          REAL="$(pwd)/../.real" &&
 734          mv .git "$REAL" &&
 735          echo "gitdir: $REAL" >.git)
 736 '
 737
 738 test_expect_success 'diff --submodule=diff with .git file' '
 739         git diff --submodule=diff HEAD^ >actual &&
 740         cat >expected <<-EOF &&
 741         Submodule sm1 $head7...0000000 (submodule deleted)
 742         Submodule sm2 0000000...$head9 (new submodule)
 743         diff --git a/sm2/foo8 b/sm2/foo8
 744         new file mode 100644
 745         index 0000000..db9916b
 746         --- /dev/null
 747         +++ b/sm2/foo8
 748         @@ -0,0 +1 @@
 749         +foo8
 750         diff --git a/sm2/foo9 b/sm2/foo9
 751         new file mode 100644
 752         index 0000000..9c3b4f6
 753         --- /dev/null
 754         +++ b/sm2/foo9
 755         @@ -0,0 +1 @@
 756         +foo9
 757         EOF
 758         diff_cmp expected actual
 759 '
 760
 761 test_expect_success 'setup nested submodule' '
 762         git submodule add -f ./sm2 &&
 763         git commit -a -m "add sm2" &&
 764         git -C sm2 submodule add ../sm2 nested &&
 765         git -C sm2 commit -a -m "nested sub" &&
 766         head10=$(git -C sm2 rev-parse --short --verify HEAD)
 767 '
 768
 769 test_expect_success 'move nested submodule HEAD' '
 770         echo "nested content" >sm2/nested/file &&
 771         git -C sm2/nested add file &&
 772         git -C sm2/nested commit --allow-empty -m "new HEAD" &&
 773         head11=$(git -C sm2/nested rev-parse --short --verify HEAD)
 774 '
 775
 776 test_expect_success 'diff --submodule=diff with moved nested submodule HEAD' '
 777         cat >expected <<-EOF &&
 778         Submodule nested $head9..$head11:
 779         diff --git a/nested/file b/nested/file
 780         new file mode 100644
 781         index 0000000..ca281f5
 782         --- /dev/null
 783         +++ b/nested/file
 784         @@ -0,0 +1 @@
 785         +nested content
 786         EOF
 787         git -C sm2 diff --submodule=diff >actual 2>err &&
 788         test_must_be_empty err &&
 789         diff_cmp expected actual
 790 '
 791
 792 test_expect_success 'diff --submodule=diff recurses into nested submodules' '
 793         cat >expected <<-EOF &&
 794         Submodule sm2 contains modified content
 795         Submodule sm2 $head9..$head10:
 796         diff --git a/sm2/.gitmodules b/sm2/.gitmodules
 797         new file mode 100644
 798         index 0000000..3a816b8
 799         --- /dev/null
 800         +++ b/sm2/.gitmodules
 801         @@ -0,0 +1,3 @@
 802         +[submodule "nested"]
 803         +       path = nested
 804         +       url = ../sm2
 805         Submodule nested 0000000...$head11 (new submodule)
 806         diff --git a/sm2/nested/file b/sm2/nested/file
 807         new file mode 100644
 808         index 0000000..ca281f5
 809         --- /dev/null
 810         +++ b/sm2/nested/file
 811         @@ -0,0 +1 @@
 812         +nested content
 813         diff --git a/sm2/nested/foo8 b/sm2/nested/foo8
 814         new file mode 100644
 815         index 0000000..db9916b
 816         --- /dev/null
 817         +++ b/sm2/nested/foo8
 818         @@ -0,0 +1 @@
 819         +foo8
 820         diff --git a/sm2/nested/foo9 b/sm2/nested/foo9
 821         new file mode 100644
 822         index 0000000..9c3b4f6
 823         --- /dev/null
 824         +++ b/sm2/nested/foo9
 825         @@ -0,0 +1 @@
 826         +foo9
 827         EOF
 828         git diff --submodule=diff >actual 2>err &&
 829         test_must_be_empty err &&
 830         diff_cmp expected actual
 831 '
 832
 833 test_done