t/t6050-replace.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2008 Christian Couder
   4 #
   5 test_description='Tests replace refs functionality'
   6
   7 . ./test-lib.sh
   8 . "$TEST_DIRECTORY/lib-gpg.sh"
   9
  10 add_and_commit_file ()
  11 {
  12     _file="$1"
  13     _msg="$2"
  14
  15     git add $_file || return $?
  16     test_tick || return $?
  17     git commit --quiet -m "$_file: $_msg"
  18 }
  19
  20 commit_buffer_contains_parents ()
  21 {
  22     git cat-file commit "$1" >payload &&
  23     sed -n -e '/^$/q' -e '/^parent /p' <payload >actual &&
  24     shift &&
  25     for _parent
  26     do
  27         echo "parent $_parent"
  28     done >expected &&
  29     test_cmp expected actual
  30 }
  31
  32 commit_peeling_shows_parents ()
  33 {
  34     _parent_number=1
  35     _commit="$1"
  36     shift &&
  37     for _parent
  38     do
  39         _found=$(git rev-parse --verify $_commit^$_parent_number) || return 1
  40         test "$_found" = "$_parent" || return 1
  41         _parent_number=$(( $_parent_number + 1 ))
  42     done &&
  43     test_must_fail git rev-parse --verify $_commit^$_parent_number
  44 }
  45
  46 commit_has_parents ()
  47 {
  48     commit_buffer_contains_parents "$@" &&
  49     commit_peeling_shows_parents "$@"
  50 }
  51
  52 HASH1=
  53 HASH2=
  54 HASH3=
  55 HASH4=
  56 HASH5=
  57 HASH6=
  58 HASH7=
  59
  60 test_expect_success 'set up buggy branch' '
  61      echo "line 1" >>hello &&
  62      echo "line 2" >>hello &&
  63      echo "line 3" >>hello &&
  64      echo "line 4" >>hello &&
  65      add_and_commit_file hello "4 lines" &&
  66      HASH1=$(git rev-parse --verify HEAD) &&
  67      echo "line BUG" >>hello &&
  68      echo "line 6" >>hello &&
  69      echo "line 7" >>hello &&
  70      echo "line 8" >>hello &&
  71      add_and_commit_file hello "4 more lines with a BUG" &&
  72      HASH2=$(git rev-parse --verify HEAD) &&
  73      echo "line 9" >>hello &&
  74      echo "line 10" >>hello &&
  75      add_and_commit_file hello "2 more lines" &&
  76      HASH3=$(git rev-parse --verify HEAD) &&
  77      echo "line 11" >>hello &&
  78      add_and_commit_file hello "1 more line" &&
  79      HASH4=$(git rev-parse --verify HEAD) &&
  80      sed -e "s/BUG/5/" hello >hello.new &&
  81      mv hello.new hello &&
  82      add_and_commit_file hello "BUG fixed" &&
  83      HASH5=$(git rev-parse --verify HEAD) &&
  84      echo "line 12" >>hello &&
  85      echo "line 13" >>hello &&
  86      add_and_commit_file hello "2 more lines" &&
  87      HASH6=$(git rev-parse --verify HEAD) &&
  88      echo "line 14" >>hello &&
  89      echo "line 15" >>hello &&
  90      echo "line 16" >>hello &&
  91      add_and_commit_file hello "again 3 more lines" &&
  92      HASH7=$(git rev-parse --verify HEAD)
  93 '
  94
  95 test_expect_success 'replace the author' '
  96      git cat-file commit $HASH2 | grep "author A U Thor" &&
  97      R=$(git cat-file commit $HASH2 | sed -e "s/A U/O/" | git hash-object -t commit --stdin -w) &&
  98      git cat-file commit $R | grep "author O Thor" &&
  99      git update-ref refs/replace/$HASH2 $R &&
 100      git show HEAD~5 | grep "O Thor" &&
 101      git show $HASH2 | grep "O Thor"
 102 '
 103
 104 test_expect_success 'test --no-replace-objects option' '
 105      git cat-file commit $HASH2 | grep "author O Thor" &&
 106      git --no-replace-objects cat-file commit $HASH2 | grep "author A U Thor" &&
 107      git show $HASH2 | grep "O Thor" &&
 108      git --no-replace-objects show $HASH2 | grep "A U Thor"
 109 '
 110
 111 test_expect_success 'test GIT_NO_REPLACE_OBJECTS env variable' '
 112      GIT_NO_REPLACE_OBJECTS=1 git cat-file commit $HASH2 | grep "author A U Thor" &&
 113      GIT_NO_REPLACE_OBJECTS=1 git show $HASH2 | grep "A U Thor"
 114 '
 115
 116 cat >tag.sig <<EOF
 117 object $HASH2
 118 type commit
 119 tag mytag
 120 tagger T A Gger <> 0 +0000
 121
 122 EOF
 123
 124 test_expect_success 'tag replaced commit' '
 125      git mktag <tag.sig >.git/refs/tags/mytag 2>message
 126 '
 127
 128 test_expect_success '"git fsck" works' '
 129      git fsck master >fsck_master.out &&
 130      grep "dangling commit $R" fsck_master.out &&
 131      grep "dangling tag $(cat .git/refs/tags/mytag)" fsck_master.out &&
 132      test -z "$(git fsck)"
 133 '
 134
 135 test_expect_success 'repack, clone and fetch work' '
 136      git repack -a -d &&
 137      git clone --no-hardlinks . clone_dir &&
 138      (
 139           cd clone_dir &&
 140           git show HEAD~5 | grep "A U Thor" &&
 141           git show $HASH2 | grep "A U Thor" &&
 142           git cat-file commit $R &&
 143           git repack -a -d &&
 144           test_must_fail git cat-file commit $R &&
 145           git fetch ../ "refs/replace/*:refs/replace/*" &&
 146           git show HEAD~5 | grep "O Thor" &&
 147           git show $HASH2 | grep "O Thor" &&
 148           git cat-file commit $R
 149      )
 150 '
 151
 152 test_expect_success '"git replace" listing and deleting' '
 153      test "$HASH2" = "$(git replace -l)" &&
 154      test "$HASH2" = "$(git replace)" &&
 155      aa=${HASH2%??????????????????????????????????????} &&
 156      test "$HASH2" = "$(git replace --list "$aa*")" &&
 157      test_must_fail git replace -d $R &&
 158      test_must_fail git replace --delete &&
 159      test_must_fail git replace -l -d $HASH2 &&
 160      git replace -d $HASH2 &&
 161      git show $HASH2 | grep "A U Thor" &&
 162      test -z "$(git replace -l)"
 163 '
 164
 165 test_expect_success '"git replace" replacing' '
 166      git replace $HASH2 $R &&
 167      git show $HASH2 | grep "O Thor" &&
 168      test_must_fail git replace $HASH2 $R &&
 169      git replace -f $HASH2 $R &&
 170      test_must_fail git replace -f &&
 171      test "$HASH2" = "$(git replace)"
 172 '
 173
 174 test_expect_success '"git replace" resolves sha1' '
 175      SHORTHASH2=$(git rev-parse --short=8 $HASH2) &&
 176      git replace -d $SHORTHASH2 &&
 177      git replace $SHORTHASH2 $R &&
 178      git show $HASH2 | grep "O Thor" &&
 179      test_must_fail git replace $HASH2 $R &&
 180      git replace -f $HASH2 $R &&
 181      test_must_fail git replace --force &&
 182      test "$HASH2" = "$(git replace)"
 183 '
 184
 185 # This creates a side branch where the bug in H2
 186 # does not appear because P2 is created by applying
 187 # H2 and squashing H5 into it.
 188 # P3, P4 and P6 are created by cherry-picking H3, H4
 189 # and H6 respectively.
 190 #
 191 # At this point, we should have the following:
 192 #
 193 #    P2--P3--P4--P6
 194 #   /
 195 # H1-H2-H3-H4-H5-H6-H7
 196 #
 197 # Then we replace H6 with P6.
 198 #
 199 test_expect_success 'create parallel branch without the bug' '
 200      git replace -d $HASH2 &&
 201      git show $HASH2 | grep "A U Thor" &&
 202      git checkout $HASH1 &&
 203      git cherry-pick $HASH2 &&
 204      git show $HASH5 | git apply &&
 205      git commit --amend -m "hello: 4 more lines WITHOUT the bug" hello &&
 206      PARA2=$(git rev-parse --verify HEAD) &&
 207      git cherry-pick $HASH3 &&
 208      PARA3=$(git rev-parse --verify HEAD) &&
 209      git cherry-pick $HASH4 &&
 210      PARA4=$(git rev-parse --verify HEAD) &&
 211      git cherry-pick $HASH6 &&
 212      PARA6=$(git rev-parse --verify HEAD) &&
 213      git replace $HASH6 $PARA6 &&
 214      git checkout master &&
 215      cur=$(git rev-parse --verify HEAD) &&
 216      test "$cur" = "$HASH7" &&
 217      git log --pretty=oneline | grep $PARA2 &&
 218      git remote add cloned ./clone_dir
 219 '
 220
 221 test_expect_success 'push to cloned repo' '
 222      git push cloned $HASH6^:refs/heads/parallel &&
 223      (
 224           cd clone_dir &&
 225           git checkout parallel &&
 226           git log --pretty=oneline | grep $PARA2
 227      )
 228 '
 229
 230 test_expect_success 'push branch with replacement' '
 231      git cat-file commit $PARA3 | grep "author A U Thor" &&
 232      S=$(git cat-file commit $PARA3 | sed -e "s/A U/O/" | git hash-object -t commit --stdin -w) &&
 233      git cat-file commit $S | grep "author O Thor" &&
 234      git replace $PARA3 $S &&
 235      git show $HASH6~2 | grep "O Thor" &&
 236      git show $PARA3 | grep "O Thor" &&
 237      git push cloned $HASH6^:refs/heads/parallel2 &&
 238      (
 239           cd clone_dir &&
 240           git checkout parallel2 &&
 241           git log --pretty=oneline | grep $PARA3 &&
 242           git show $PARA3 | grep "A U Thor"
 243      )
 244 '
 245
 246 test_expect_success 'fetch branch with replacement' '
 247      git branch tofetch $HASH6 &&
 248      (
 249           cd clone_dir &&
 250           git fetch origin refs/heads/tofetch:refs/heads/parallel3 &&
 251           git log --pretty=oneline parallel3 >output.txt &&
 252           ! grep $PARA3 output.txt &&
 253           git show $PARA3 >para3.txt &&
 254           grep "A U Thor" para3.txt &&
 255           git fetch origin "refs/replace/*:refs/replace/*" &&
 256           git log --pretty=oneline parallel3 >output.txt &&
 257           grep $PARA3 output.txt &&
 258           git show $PARA3 >para3.txt &&
 259           grep "O Thor" para3.txt
 260      )
 261 '
 262
 263 test_expect_success 'bisect and replacements' '
 264      git bisect start $HASH7 $HASH1 &&
 265      test "$PARA3" = "$(git rev-parse --verify HEAD)" &&
 266      git bisect reset &&
 267      GIT_NO_REPLACE_OBJECTS=1 git bisect start $HASH7 $HASH1 &&
 268      test "$HASH4" = "$(git rev-parse --verify HEAD)" &&
 269      git bisect reset &&
 270      git --no-replace-objects bisect start $HASH7 $HASH1 &&
 271      test "$HASH4" = "$(git rev-parse --verify HEAD)" &&
 272      git bisect reset
 273 '
 274
 275 test_expect_success 'index-pack and replacements' '
 276         git --no-replace-objects rev-list --objects HEAD |
 277         git --no-replace-objects pack-objects test- &&
 278         git index-pack test-*.pack
 279 '
 280
 281 test_expect_success 'not just commits' '
 282         echo replaced >file &&
 283         git add file &&
 284         REPLACED=$(git rev-parse :file) &&
 285         mv file file.replaced &&
 286
 287         echo original >file &&
 288         git add file &&
 289         ORIGINAL=$(git rev-parse :file) &&
 290         git update-ref refs/replace/$ORIGINAL $REPLACED &&
 291         mv file file.original &&
 292
 293         git checkout file &&
 294         test_cmp file.replaced file
 295 '
 296
 297 test_expect_success 'replaced and replacement objects must be of the same type' '
 298         test_must_fail git replace mytag $HASH1 &&
 299         test_must_fail git replace HEAD^{tree} HEAD~1 &&
 300         BLOB=$(git rev-parse :file) &&
 301         test_must_fail git replace HEAD^ $BLOB
 302 '
 303
 304 test_expect_success '-f option bypasses the type check' '
 305         git replace -f mytag $HASH1 &&
 306         git replace --force HEAD^{tree} HEAD~1 &&
 307         git replace -f HEAD^ $BLOB
 308 '
 309
 310 test_expect_success 'git cat-file --batch works on replace objects' '
 311         git replace | grep $PARA3 &&
 312         echo $PARA3 | git cat-file --batch
 313 '
 314
 315 test_expect_success 'test --format bogus' '
 316         test_must_fail git replace --format bogus >/dev/null 2>&1
 317 '
 318
 319 test_expect_success 'test --format short' '
 320         git replace --format=short >actual &&
 321         git replace >expected &&
 322         test_cmp expected actual
 323 '
 324
 325 test_expect_success 'test --format medium' '
 326         H1=$(git --no-replace-objects rev-parse HEAD~1) &&
 327         HT=$(git --no-replace-objects rev-parse HEAD^{tree}) &&
 328         MYTAG=$(git --no-replace-objects rev-parse mytag) &&
 329         {
 330                 echo "$H1 -> $BLOB" &&
 331                 echo "$BLOB -> $REPLACED" &&
 332                 echo "$HT -> $H1" &&
 333                 echo "$PARA3 -> $S" &&
 334                 echo "$MYTAG -> $HASH1"
 335         } | sort >expected &&
 336         git replace -l --format medium | sort >actual &&
 337         test_cmp expected actual
 338 '
 339
 340 test_expect_success 'test --format long' '
 341         {
 342                 echo "$H1 (commit) -> $BLOB (blob)" &&
 343                 echo "$BLOB (blob) -> $REPLACED (blob)" &&
 344                 echo "$HT (tree) -> $H1 (commit)" &&
 345                 echo "$PARA3 (commit) -> $S (commit)" &&
 346                 echo "$MYTAG (tag) -> $HASH1 (commit)"
 347         } | sort >expected &&
 348         git replace --format=long | sort >actual &&
 349         test_cmp expected actual
 350 '
 351
 352 test_expect_success 'setup fake editors' '
 353         write_script fakeeditor <<-\EOF &&
 354                 sed -e "s/A U Thor/A fake Thor/" "$1" >"$1.new"
 355                 mv "$1.new" "$1"
 356         EOF
 357         write_script failingfakeeditor <<-\EOF
 358                 ./fakeeditor "$@"
 359                 false
 360         EOF
 361 '
 362
 363 test_expect_success '--edit with and without already replaced object' '
 364         test_must_fail env GIT_EDITOR=./fakeeditor git replace --edit "$PARA3" &&
 365         GIT_EDITOR=./fakeeditor git replace --force --edit "$PARA3" &&
 366         git replace -l | grep "$PARA3" &&
 367         git cat-file commit "$PARA3" | grep "A fake Thor" &&
 368         git replace -d "$PARA3" &&
 369         GIT_EDITOR=./fakeeditor git replace --edit "$PARA3" &&
 370         git replace -l | grep "$PARA3" &&
 371         git cat-file commit "$PARA3" | grep "A fake Thor"
 372 '
 373
 374 test_expect_success '--edit and change nothing or command failed' '
 375         git replace -d "$PARA3" &&
 376         test_must_fail env GIT_EDITOR=true git replace --edit "$PARA3" &&
 377         test_must_fail env GIT_EDITOR="./failingfakeeditor" git replace --edit "$PARA3" &&
 378         GIT_EDITOR=./fakeeditor git replace --edit "$PARA3" &&
 379         git replace -l | grep "$PARA3" &&
 380         git cat-file commit "$PARA3" | grep "A fake Thor"
 381 '
 382
 383 test_expect_success 'replace ref cleanup' '
 384         test -n "$(git replace)" &&
 385         git replace -d $(git replace) &&
 386         test -z "$(git replace)"
 387 '
 388
 389 test_expect_success '--graft with and without already replaced object' '
 390         test $(git log --oneline | wc -l) = 7 &&
 391         git replace --graft $HASH5 &&
 392         test $(git log --oneline | wc -l) = 3 &&
 393         commit_has_parents $HASH5 &&
 394         test_must_fail git replace --graft $HASH5 $HASH4 $HASH3 &&
 395         git replace --force -g $HASH5 $HASH4 $HASH3 &&
 396         commit_has_parents $HASH5 $HASH4 $HASH3 &&
 397         git replace -d $HASH5
 398 '
 399
 400 test_expect_success GPG 'set up a signed commit' '
 401         echo "line 17" >>hello &&
 402         echo "line 18" >>hello &&
 403         git add hello &&
 404         test_tick &&
 405         git commit --quiet -S -m "hello: 2 more lines in a signed commit" &&
 406         HASH8=$(git rev-parse --verify HEAD) &&
 407         git verify-commit $HASH8
 408 '
 409
 410 test_expect_success GPG '--graft with a signed commit' '
 411         git cat-file commit $HASH8 >orig &&
 412         git replace --graft $HASH8 &&
 413         git cat-file commit $HASH8 >repl &&
 414         commit_has_parents $HASH8 &&
 415         test_must_fail git verify-commit $HASH8 &&
 416         sed -n -e "/^tree /p" -e "/^author /p" -e "/^committer /p" orig >expected &&
 417         echo >>expected &&
 418         sed -e "/^$/q" repl >actual &&
 419         test_cmp expected actual &&
 420         git replace -d $HASH8
 421 '
 422
 423 test_expect_success GPG 'set up a merge commit with a mergetag' '
 424         git reset --hard HEAD &&
 425         git checkout -b test_branch HEAD~2 &&
 426         echo "line 1 from test branch" >>hello &&
 427         echo "line 2 from test branch" >>hello &&
 428         git add hello &&
 429         test_tick &&
 430         git commit -m "hello: 2 more lines from a test branch" &&
 431         HASH9=$(git rev-parse --verify HEAD) &&
 432         git tag -s -m "tag for testing with a mergetag" test_tag HEAD &&
 433         git checkout master &&
 434         git merge -s ours test_tag &&
 435         HASH10=$(git rev-parse --verify HEAD) &&
 436         git cat-file commit $HASH10 | grep "^mergetag object"
 437 '
 438
 439 test_expect_success GPG '--graft on a commit with a mergetag' '
 440         test_must_fail git replace --graft $HASH10 $HASH8^1 &&
 441         git replace --graft $HASH10 $HASH8^1 $HASH9 &&
 442         git replace -d $HASH10
 443 '
 444
 445 test_done