t/t7003-filter-branch.sh

   1 #!/bin/sh
   2
   3 test_description='git filter-branch'
   4 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
   5 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
   6
   7 . ./test-lib.sh
   8 . "$TEST_DIRECTORY/lib-gpg.sh"
   9
  10 test_expect_success 'setup' '
  11         test_commit A &&
  12         GIT_COMMITTER_DATE="@0 +0000" GIT_AUTHOR_DATE="@0 +0000" &&
  13         test_commit --notick B &&
  14         git checkout -b branch B &&
  15         test_commit D &&
  16         mkdir dir &&
  17         test_commit dir/D &&
  18         test_commit E &&
  19         git checkout main &&
  20         test_commit C &&
  21         git checkout branch &&
  22         git merge C &&
  23         git tag F &&
  24         test_commit G &&
  25         test_commit H
  26 '
  27 # * (HEAD, branch) H
  28 # * G
  29 # *   Merge commit 'C' into branch
  30 # |\
  31 # | * (main) C
  32 # * | E
  33 # * | dir/D
  34 # * | D
  35 # |/
  36 # * B
  37 # * A
  38
  39
  40 H=$(git rev-parse H)
  41
  42 test_expect_success 'rewrite identically' '
  43         git filter-branch branch
  44 '
  45 test_expect_success 'result is really identical' '
  46         test $H = $(git rev-parse HEAD)
  47 '
  48
  49 test_expect_success 'rewrite bare repository identically' '
  50         (git config core.bare true && cd .git &&
  51          git filter-branch branch > filter-output 2>&1 &&
  52         ! grep fatal filter-output)
  53 '
  54 git config core.bare false
  55 test_expect_success 'result is really identical' '
  56         test $H = $(git rev-parse HEAD)
  57 '
  58
  59 TRASHDIR=$(pwd)
  60 test_expect_success 'correct GIT_DIR while using -d' '
  61         mkdir drepo &&
  62         ( cd drepo &&
  63         git init &&
  64         test_commit drepo &&
  65         git filter-branch -d "$TRASHDIR/dfoo" \
  66                 --index-filter "cp \"$TRASHDIR\"/dfoo/backup-refs \"$TRASHDIR\"" \
  67         ) &&
  68         grep drepo "$TRASHDIR/backup-refs"
  69 '
  70
  71 test_expect_success 'tree-filter works with -d' '
  72         git init drepo-tree &&
  73         (
  74                 cd drepo-tree &&
  75                 test_commit one &&
  76                 git filter-branch -d "$TRASHDIR/dfoo" \
  77                         --tree-filter "echo changed >one.t" &&
  78                 echo changed >expect &&
  79                 git cat-file blob HEAD:one.t >actual &&
  80                 test_cmp expect actual &&
  81                 test_cmp one.t actual
  82         )
  83 '
  84
  85 test_expect_success 'Fail if commit filter fails' '
  86         test_must_fail git filter-branch -f --commit-filter "exit 1" HEAD
  87 '
  88
  89 test_expect_success 'rewrite, renaming a specific file' '
  90         git filter-branch -f --tree-filter "mv D.t doh || :" HEAD
  91 '
  92
  93 test_expect_success 'test that the file was renamed' '
  94         test D = "$(git show HEAD:doh --)" &&
  95         ! test -f D.t &&
  96         test -f doh &&
  97         test D = "$(cat doh)"
  98 '
  99
 100 test_expect_success 'rewrite, renaming a specific directory' '
 101         git filter-branch -f --tree-filter "mv dir diroh || :" HEAD
 102 '
 103
 104 test_expect_success 'test that the directory was renamed' '
 105         test dir/D = "$(git show HEAD:diroh/D.t --)" &&
 106         ! test -d dir &&
 107         test -d diroh &&
 108         ! test -d diroh/dir &&
 109         test -f diroh/D.t &&
 110         test dir/D = "$(cat diroh/D.t)"
 111 '
 112
 113 V=$(git rev-parse HEAD)
 114
 115 test_expect_success 'populate --state-branch' '
 116         git filter-branch --state-branch state -f --tree-filter "touch file || :" HEAD
 117 '
 118
 119 W=$(git rev-parse HEAD)
 120
 121 test_expect_success 'using --state-branch to skip already rewritten commits' '
 122         test_when_finished git reset --hard $V &&
 123         git reset --hard $V &&
 124         git filter-branch --state-branch state -f --tree-filter "touch file || :" HEAD &&
 125         test_cmp_rev $W HEAD
 126 '
 127
 128 git tag oldD HEAD~4
 129 test_expect_success 'rewrite one branch, keeping a side branch' '
 130         git branch modD oldD &&
 131         git filter-branch -f --tree-filter "mv B.t boh || :" D..modD
 132 '
 133
 134 test_expect_success 'common ancestor is still common (unchanged)' '
 135         test "$(git merge-base modD D)" = "$(git rev-parse B)"
 136 '
 137
 138 test_expect_success 'filter subdirectory only' '
 139         mkdir subdir &&
 140         touch subdir/new &&
 141         git add subdir/new &&
 142         test_tick &&
 143         git commit -m "subdir" &&
 144         echo H > A.t &&
 145         test_tick &&
 146         git commit -m "not subdir" A.t &&
 147         echo A > subdir/new &&
 148         test_tick &&
 149         git commit -m "again subdir" subdir/new &&
 150         git rm A.t &&
 151         test_tick &&
 152         git commit -m "again not subdir" &&
 153         git branch sub &&
 154         git branch sub-earlier HEAD~2 &&
 155         git filter-branch -f --subdirectory-filter subdir \
 156                 refs/heads/sub refs/heads/sub-earlier
 157 '
 158
 159 test_expect_success 'subdirectory filter result looks okay' '
 160         test 2 = $(git rev-list sub | wc -l) &&
 161         git show sub:new &&
 162         test_must_fail git show sub:subdir &&
 163         git show sub-earlier:new &&
 164         test_must_fail git show sub-earlier:subdir
 165 '
 166
 167 test_expect_success 'more setup' '
 168         git checkout main &&
 169         mkdir subdir &&
 170         echo A > subdir/new &&
 171         git add subdir/new &&
 172         test_tick &&
 173         git commit -m "subdir on main" subdir/new &&
 174         git rm A.t &&
 175         test_tick &&
 176         git commit -m "again subdir on main" &&
 177         git merge branch
 178 '
 179
 180 test_expect_success 'use index-filter to move into a subdirectory' '
 181         git branch directorymoved &&
 182         git filter-branch -f --index-filter \
 183                  "git ls-files -s | sed \"s-    -&newsubdir/-\" |
 184                   GIT_INDEX_FILE=\$GIT_INDEX_FILE.new \
 185                         git update-index --index-info &&
 186                   mv \"\$GIT_INDEX_FILE.new\" \"\$GIT_INDEX_FILE\"" directorymoved &&
 187         git diff --exit-code HEAD directorymoved:newsubdir
 188 '
 189
 190 test_expect_success 'stops when msg filter fails' '
 191         old=$(git rev-parse HEAD) &&
 192         test_must_fail git filter-branch -f --msg-filter false HEAD &&
 193         test $old = $(git rev-parse HEAD) &&
 194         rm -rf .git-rewrite
 195 '
 196
 197 test_expect_success 'author information is preserved' '
 198         : > i &&
 199         git add i &&
 200         test_tick &&
 201         GIT_AUTHOR_NAME="B V Uips" git commit -m bvuips &&
 202         git branch preserved-author &&
 203         (sane_unset GIT_AUTHOR_NAME &&
 204          git filter-branch -f --msg-filter "cat; \
 205                         test \$GIT_COMMIT != $(git rev-parse main) || \
 206                         echo Hallo" \
 207                 preserved-author) &&
 208         git rev-list --author="B V Uips" preserved-author >actual &&
 209         test_line_count = 1 actual
 210 '
 211
 212 test_expect_success "remove a certain author's commits" '
 213         echo i > i &&
 214         test_tick &&
 215         git commit -m i i &&
 216         git branch removed-author &&
 217         git filter-branch -f --commit-filter "\
 218                 if [ \"\$GIT_AUTHOR_NAME\" = \"B V Uips\" ];\
 219                 then\
 220                         skip_commit \"\$@\";
 221                 else\
 222                         git commit-tree \"\$@\";\
 223                 fi" removed-author &&
 224         cnt1=$(git rev-list main | wc -l) &&
 225         cnt2=$(git rev-list removed-author | wc -l) &&
 226         test $cnt1 -eq $(($cnt2 + 1)) &&
 227         git rev-list --author="B V Uips" removed-author >actual &&
 228         test_line_count = 0 actual
 229 '
 230
 231 test_expect_success 'barf on invalid name' '
 232         test_must_fail git filter-branch -f main xy-problem &&
 233         test_must_fail git filter-branch -f HEAD^
 234 '
 235
 236 test_expect_success '"map" works in commit filter' '
 237         git filter-branch -f --commit-filter "\
 238                 parent=\$(git rev-parse \$GIT_COMMIT^) &&
 239                 mapped=\$(map \$parent) &&
 240                 actual=\$(echo \"\$@\" | sed \"s/^.*-p //\") &&
 241                 test \$mapped = \$actual &&
 242                 git commit-tree \"\$@\";" main~2..main &&
 243         git rev-parse --verify main
 244 '
 245
 246 test_expect_success 'Name needing quotes' '
 247
 248         git checkout -b rerere A &&
 249         mkdir foo &&
 250         name="れれれ" &&
 251         >foo/$name &&
 252         git add foo &&
 253         git commit -m "Adding a file" &&
 254         git filter-branch --tree-filter "rm -fr foo" &&
 255         test_must_fail git ls-files --error-unmatch "foo/$name" &&
 256         test $(git rev-parse --verify rerere) != $(git rev-parse --verify A)
 257
 258 '
 259
 260 test_expect_success 'Subdirectory filter with disappearing trees' '
 261         git reset --hard &&
 262         git checkout main &&
 263
 264         mkdir foo &&
 265         touch foo/bar &&
 266         git add foo &&
 267         test_tick &&
 268         git commit -m "Adding foo" &&
 269
 270         git rm -r foo &&
 271         test_tick &&
 272         git commit -m "Removing foo" &&
 273
 274         mkdir foo &&
 275         touch foo/bar &&
 276         git add foo &&
 277         test_tick &&
 278         git commit -m "Re-adding foo" &&
 279
 280         git filter-branch -f --subdirectory-filter foo &&
 281         git rev-list main >actual &&
 282         test_line_count = 3 actual
 283 '
 284
 285 test_expect_success 'Tag name filtering retains tag message' '
 286         git tag -m atag T &&
 287         git cat-file tag T > expect &&
 288         git filter-branch -f --tag-name-filter cat &&
 289         git cat-file tag T > actual &&
 290         test_cmp expect actual
 291 '
 292
 293 faux_gpg_tag='object XXXXXX
 294 type commit
 295 tag S
 296 tagger T A Gger <tagger@example.com> 1206026339 -0500
 297
 298 This is a faux gpg signed tag.
 299 -----BEGIN PGP SIGNATURE-----
 300 Version: FauxGPG v0.0.0 (FAUX/Linux)
 301
 302 gdsfoewhxu/6l06f1kxyxhKdZkrcbaiOMtkJUA9ITAc1mlamh0ooasxkH1XwMbYQ
 303 acmwXaWET20H0GeAGP+7vow=
 304 =agpO
 305 -----END PGP SIGNATURE-----
 306 '
 307 test_expect_success 'Tag name filtering strips gpg signature' '
 308         sha1=$(git rev-parse HEAD) &&
 309         sha1t=$(echo "$faux_gpg_tag" | sed -e s/XXXXXX/$sha1/ | git mktag) &&
 310         git update-ref "refs/tags/S" "$sha1t" &&
 311         echo "$faux_gpg_tag" | sed -e s/XXXXXX/$sha1/ | head -n 6 > expect &&
 312         git filter-branch -f --tag-name-filter cat &&
 313         git cat-file tag S > actual &&
 314         test_cmp expect actual
 315 '
 316
 317 test_expect_success GPG 'Filtering retains message of gpg signed commit' '
 318         mkdir gpg &&
 319         touch gpg/foo &&
 320         git add gpg &&
 321         test_tick &&
 322         git commit -S -m "Adding gpg" &&
 323
 324         git log -1 --format="%s" > expect &&
 325         git filter-branch -f --msg-filter "cat" &&
 326         git log -1 --format="%s" > actual &&
 327         test_cmp expect actual
 328 '
 329
 330 test_expect_success 'Tag name filtering allows slashes in tag names' '
 331         git tag -m tag-with-slash X/1 &&
 332         git cat-file tag X/1 | sed -e s,X/1,X/2, > expect &&
 333         git filter-branch -f --tag-name-filter "echo X/2" &&
 334         git cat-file tag X/2 > actual &&
 335         test_cmp expect actual
 336 '
 337 test_expect_success 'setup --prune-empty comparisons' '
 338         git checkout --orphan main-no-a &&
 339         git rm -rf . &&
 340         unset test_tick &&
 341         test_tick &&
 342         GIT_COMMITTER_DATE="@0 +0000" GIT_AUTHOR_DATE="@0 +0000" &&
 343         test_commit --notick B B.t B Bx &&
 344         git checkout -b branch-no-a Bx &&
 345         test_commit D D.t D Dx &&
 346         mkdir dir &&
 347         test_commit dir/D dir/D.t dir/D dir/Dx &&
 348         test_commit E E.t E Ex &&
 349         git checkout main-no-a &&
 350         test_commit C C.t C Cx &&
 351         git checkout branch-no-a &&
 352         git merge Cx -m "Merge tag '\''C'\'' into branch" &&
 353         git tag Fx &&
 354         test_commit G G.t G Gx &&
 355         test_commit H H.t H Hx &&
 356         git checkout branch
 357 '
 358
 359 test_expect_success 'Prune empty commits' '
 360         git rev-list HEAD > expect &&
 361         test_commit to_remove &&
 362         git filter-branch -f --index-filter "git update-index --remove to_remove.t" --prune-empty HEAD &&
 363         git rev-list HEAD > actual &&
 364         test_cmp expect actual
 365 '
 366
 367 test_expect_success 'prune empty collapsed merges' '
 368         test_config merge.ff false &&
 369         git rev-list HEAD >expect &&
 370         test_commit to_remove_2 &&
 371         git reset --hard HEAD^ &&
 372         test_merge non-ff to_remove_2 &&
 373         git filter-branch -f --index-filter "git update-index --remove to_remove_2.t" --prune-empty HEAD &&
 374         git rev-list HEAD >actual &&
 375         test_cmp expect actual
 376 '
 377
 378 test_expect_success 'prune empty works even without index/tree filters' '
 379         git rev-list HEAD >expect &&
 380         git commit --allow-empty -m empty &&
 381         git filter-branch -f --prune-empty HEAD &&
 382         git rev-list HEAD >actual &&
 383         test_cmp expect actual
 384 '
 385
 386 test_expect_success '--prune-empty is able to prune root commit' '
 387         git rev-list branch-no-a >expect &&
 388         git branch testing H &&
 389         git filter-branch -f --prune-empty --index-filter "git update-index --remove A.t" testing &&
 390         git rev-list testing >actual &&
 391         git branch -D testing &&
 392         test_cmp expect actual
 393 '
 394
 395 test_expect_success '--prune-empty is able to prune entire branch' '
 396         git branch prune-entire B &&
 397         git filter-branch -f --prune-empty --index-filter "git update-index --remove A.t B.t" prune-entire &&
 398         test_must_fail git rev-parse refs/heads/prune-entire &&
 399         if test_have_prereq REFFILES
 400         then
 401                 test_must_fail git reflog exists refs/heads/prune-entire
 402         fi
 403 '
 404
 405 test_expect_success '--remap-to-ancestor with filename filters' '
 406         git checkout main &&
 407         git reset --hard A &&
 408         test_commit add-foo foo 1 &&
 409         git branch moved-foo &&
 410         test_commit add-bar bar a &&
 411         git branch invariant &&
 412         orig_invariant=$(git rev-parse invariant) &&
 413         git branch moved-bar &&
 414         test_commit change-foo foo 2 &&
 415         git filter-branch -f --remap-to-ancestor \
 416                 moved-foo moved-bar A..main \
 417                 -- -- foo &&
 418         test $(git rev-parse moved-foo) = $(git rev-parse moved-bar) &&
 419         test $(git rev-parse moved-foo) = $(git rev-parse main^) &&
 420         test $orig_invariant = $(git rev-parse invariant)
 421 '
 422
 423 test_expect_success 'automatic remapping to ancestor with filename filters' '
 424         git checkout main &&
 425         git reset --hard A &&
 426         test_commit add-foo2 foo 1 &&
 427         git branch moved-foo2 &&
 428         test_commit add-bar2 bar a &&
 429         git branch invariant2 &&
 430         orig_invariant=$(git rev-parse invariant2) &&
 431         git branch moved-bar2 &&
 432         test_commit change-foo2 foo 2 &&
 433         git filter-branch -f \
 434                 moved-foo2 moved-bar2 A..main \
 435                 -- -- foo &&
 436         test $(git rev-parse moved-foo2) = $(git rev-parse moved-bar2) &&
 437         test $(git rev-parse moved-foo2) = $(git rev-parse main^) &&
 438         test $orig_invariant = $(git rev-parse invariant2)
 439 '
 440
 441 test_expect_success 'setup submodule' '
 442         rm -fr ?* .git &&
 443         git init &&
 444         test_commit file &&
 445         mkdir submod &&
 446         submodurl="$PWD/submod" &&
 447         ( cd submod &&
 448           git init &&
 449           test_commit file-in-submod ) &&
 450         git submodule add "$submodurl" &&
 451         git commit -m "added submodule" &&
 452         test_commit add-file &&
 453         ( cd submod && test_commit add-in-submodule ) &&
 454         git add submod &&
 455         git commit -m "changed submodule" &&
 456         git branch original HEAD
 457 '
 458
 459 orig_head=$(git show-ref --hash --head HEAD)
 460
 461 test_expect_success 'rewrite submodule with another content' '
 462         git filter-branch --tree-filter "test -d submod && {
 463                                          rm -rf submod &&
 464                                          git rm -rf --quiet submod &&
 465                                          mkdir submod &&
 466                                          : > submod/file
 467                                          } || :" HEAD &&
 468         test $orig_head != $(git show-ref --hash --head HEAD)
 469 '
 470
 471 test_expect_success 'replace submodule revision' '
 472         invalid=$(test_oid numeric) &&
 473         git reset --hard original &&
 474         git filter-branch -f --tree-filter \
 475             "if git ls-files --error-unmatch -- submod > /dev/null 2>&1
 476              then git update-index --cacheinfo 160000 $invalid submod
 477              fi" HEAD &&
 478         test $orig_head != $(git show-ref --hash --head HEAD)
 479 '
 480
 481 test_expect_success 'filter commit message without trailing newline' '
 482         git reset --hard original &&
 483         commit=$(printf "no newline" | git commit-tree HEAD^{tree}) &&
 484         git update-ref refs/heads/no-newline $commit &&
 485         git filter-branch -f refs/heads/no-newline &&
 486         echo $commit >expect &&
 487         git rev-parse refs/heads/no-newline >actual &&
 488         test_cmp expect actual
 489 '
 490
 491 test_expect_success 'tree-filter deals with object name vs pathname ambiguity' '
 492         test_when_finished "git reset --hard original" &&
 493         ambiguous=$(git rev-list -1 HEAD) &&
 494         git filter-branch --tree-filter "mv file.t $ambiguous" HEAD^.. &&
 495         git show HEAD:$ambiguous
 496 '
 497
 498 test_expect_success 'rewrite repository including refs that point at non-commit object' '
 499         test_when_finished "git reset --hard original" &&
 500         tree=$(git rev-parse HEAD^{tree}) &&
 501         test_when_finished "git replace -d $tree" &&
 502         echo A >new &&
 503         git add new &&
 504         new_tree=$(git write-tree) &&
 505         git replace $tree $new_tree &&
 506         git tag -a -m "tag to a tree" treetag $new_tree &&
 507         git reset --hard HEAD &&
 508         git filter-branch -f -- --all >filter-output 2>&1 &&
 509         ! grep fatal filter-output
 510 '
 511
 512 test_expect_success 'filter-branch handles ref deletion' '
 513         git switch --orphan empty-commit &&
 514         git commit --allow-empty -m "empty commit" &&
 515         git tag empty &&
 516         git branch to-delete &&
 517         git filter-branch -f --prune-empty to-delete >out 2>&1 &&
 518         grep "to-delete.*was deleted" out &&
 519         test_must_fail git rev-parse --verify to-delete
 520 '
 521
 522 test_expect_success 'filter-branch handles ref rewrite' '
 523         git checkout empty &&
 524         test_commit to-drop &&
 525         git branch rewrite &&
 526         git filter-branch -f \
 527                 --index-filter "git rm --ignore-unmatch --cached to-drop.t" \
 528                  rewrite >out 2>&1 &&
 529         grep "rewrite.*was rewritten" out &&
 530         ! grep -i warning out &&
 531         git diff-tree empty rewrite
 532 '
 533
 534 test_expect_success 'filter-branch handles ancestor rewrite' '
 535         test_commit to-exclude &&
 536         git branch ancestor &&
 537         git filter-branch -f ancestor -- :^to-exclude.t >out 2>&1 &&
 538         grep "ancestor.*was rewritten" out &&
 539         ! grep -i warning out &&
 540         git diff-tree HEAD^ ancestor
 541 '
 542
 543 test_done