t/t6050-replace.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2008 Christian Couder
   4 #
   5 test_description='Tests replace refs functionality'
   6
   7 exec </dev/null
   8
   9 . ./test-lib.sh
  10
  11 add_and_commit_file()
  12 {
  13     _file="$1"
  14     _msg="$2"
  15
  16     git add $_file || return $?
  17     test_tick || return $?
  18     git commit --quiet -m "$_file: $_msg"
  19 }
  20
  21 HASH1=
  22 HASH2=
  23 HASH3=
  24 HASH4=
  25 HASH5=
  26 HASH6=
  27 HASH7=
  28
  29 test_expect_success 'set up buggy branch' '
  30      echo "line 1" >> hello &&
  31      echo "line 2" >> hello &&
  32      echo "line 3" >> hello &&
  33      echo "line 4" >> hello &&
  34      add_and_commit_file hello "4 lines" &&
  35      HASH1=$(git rev-parse --verify HEAD) &&
  36      echo "line BUG" >> hello &&
  37      echo "line 6" >> hello &&
  38      echo "line 7" >> hello &&
  39      echo "line 8" >> hello &&
  40      add_and_commit_file hello "4 more lines with a BUG" &&
  41      HASH2=$(git rev-parse --verify HEAD) &&
  42      echo "line 9" >> hello &&
  43      echo "line 10" >> hello &&
  44      add_and_commit_file hello "2 more lines" &&
  45      HASH3=$(git rev-parse --verify HEAD) &&
  46      echo "line 11" >> hello &&
  47      add_and_commit_file hello "1 more line" &&
  48      HASH4=$(git rev-parse --verify HEAD) &&
  49      sed -e "s/BUG/5/" hello > hello.new &&
  50      mv hello.new hello &&
  51      add_and_commit_file hello "BUG fixed" &&
  52      HASH5=$(git rev-parse --verify HEAD) &&
  53      echo "line 12" >> hello &&
  54      echo "line 13" >> hello &&
  55      add_and_commit_file hello "2 more lines" &&
  56      HASH6=$(git rev-parse --verify HEAD) &&
  57      echo "line 14" >> hello &&
  58      echo "line 15" >> hello &&
  59      echo "line 16" >> hello &&
  60      add_and_commit_file hello "again 3 more lines" &&
  61      HASH7=$(git rev-parse --verify HEAD)
  62 '
  63
  64 test_expect_success 'replace the author' '
  65      git cat-file commit $HASH2 | grep "author A U Thor" &&
  66      R=$(git cat-file commit $HASH2 | sed -e "s/A U/O/" | git hash-object -t commit --stdin -w) &&
  67      git cat-file commit $R | grep "author O Thor" &&
  68      git update-ref refs/replace/$HASH2 $R &&
  69      git show HEAD~5 | grep "O Thor" &&
  70      git show $HASH2 | grep "O Thor"
  71 '
  72
  73 test_expect_success 'test --no-replace-objects option' '
  74      git cat-file commit $HASH2 | grep "author O Thor" &&
  75      git --no-replace-objects cat-file commit $HASH2 | grep "author A U Thor" &&
  76      git show $HASH2 | grep "O Thor" &&
  77      git --no-replace-objects show $HASH2 | grep "A U Thor"
  78 '
  79
  80 test_expect_success 'test GIT_NO_REPLACE_OBJECTS env variable' '
  81      GIT_NO_REPLACE_OBJECTS=1 git cat-file commit $HASH2 | grep "author A U Thor" &&
  82      GIT_NO_REPLACE_OBJECTS=1 git show $HASH2 | grep "A U Thor"
  83 '
  84
  85 cat >tag.sig <<EOF
  86 object $HASH2
  87 type commit
  88 tag mytag
  89 tagger T A Gger <> 0 +0000
  90
  91 EOF
  92
  93 test_expect_success 'tag replaced commit' '
  94      git mktag <tag.sig >.git/refs/tags/mytag 2>message
  95 '
  96
  97 test_expect_success '"git fsck" works' '
  98      git fsck master > fsck_master.out &&
  99      grep "dangling commit $R" fsck_master.out &&
 100      grep "dangling tag $(cat .git/refs/tags/mytag)" fsck_master.out &&
 101      test -z "$(git fsck)"
 102 '
 103
 104 test_expect_success 'repack, clone and fetch work' '
 105      git repack -a -d &&
 106      git clone --no-hardlinks . clone_dir &&
 107      (
 108           cd clone_dir &&
 109           git show HEAD~5 | grep "A U Thor" &&
 110           git show $HASH2 | grep "A U Thor" &&
 111           git cat-file commit $R &&
 112           git repack -a -d &&
 113           test_must_fail git cat-file commit $R &&
 114           git fetch ../ "refs/replace/*:refs/replace/*" &&
 115           git show HEAD~5 | grep "O Thor" &&
 116           git show $HASH2 | grep "O Thor" &&
 117           git cat-file commit $R
 118      )
 119 '
 120
 121 test_expect_success '"git replace" listing and deleting' '
 122      test "$HASH2" = "$(git replace -l)" &&
 123      test "$HASH2" = "$(git replace)" &&
 124      aa=${HASH2%??????????????????????????????????????} &&
 125      test "$HASH2" = "$(git replace --list "$aa*")" &&
 126      test_must_fail git replace -d $R &&
 127      test_must_fail git replace --delete &&
 128      test_must_fail git replace -l -d $HASH2 &&
 129      git replace -d $HASH2 &&
 130      git show $HASH2 | grep "A U Thor" &&
 131      test -z "$(git replace -l)"
 132 '
 133
 134 test_expect_success '"git replace" replacing' '
 135      git replace $HASH2 $R &&
 136      git show $HASH2 | grep "O Thor" &&
 137      test_must_fail git replace $HASH2 $R &&
 138      git replace -f $HASH2 $R &&
 139      test_must_fail git replace -f &&
 140      test "$HASH2" = "$(git replace)"
 141 '
 142
 143 test_expect_success '"git replace" resolves sha1' '
 144      SHORTHASH2=$(git rev-parse --short=8 $HASH2) &&
 145      git replace -d $SHORTHASH2 &&
 146      git replace $SHORTHASH2 $R &&
 147      git show $HASH2 | grep "O Thor" &&
 148      test_must_fail git replace $HASH2 $R &&
 149      git replace -f $HASH2 $R &&
 150      test_must_fail git replace --force &&
 151      test "$HASH2" = "$(git replace)"
 152 '
 153
 154 # This creates a side branch where the bug in H2
 155 # does not appear because P2 is created by applying
 156 # H2 and squashing H5 into it.
 157 # P3, P4 and P6 are created by cherry-picking H3, H4
 158 # and H6 respectively.
 159 #
 160 # At this point, we should have the following:
 161 #
 162 #    P2--P3--P4--P6
 163 #   /
 164 # H1-H2-H3-H4-H5-H6-H7
 165 #
 166 # Then we replace H6 with P6.
 167 #
 168 test_expect_success 'create parallel branch without the bug' '
 169      git replace -d $HASH2 &&
 170      git show $HASH2 | grep "A U Thor" &&
 171      git checkout $HASH1 &&
 172      git cherry-pick $HASH2 &&
 173      git show $HASH5 | git apply &&
 174      git commit --amend -m "hello: 4 more lines WITHOUT the bug" hello &&
 175      PARA2=$(git rev-parse --verify HEAD) &&
 176      git cherry-pick $HASH3 &&
 177      PARA3=$(git rev-parse --verify HEAD) &&
 178      git cherry-pick $HASH4 &&
 179      PARA4=$(git rev-parse --verify HEAD) &&
 180      git cherry-pick $HASH6 &&
 181      PARA6=$(git rev-parse --verify HEAD) &&
 182      git replace $HASH6 $PARA6 &&
 183      git checkout master &&
 184      cur=$(git rev-parse --verify HEAD) &&
 185      test "$cur" = "$HASH7" &&
 186      git log --pretty=oneline | grep $PARA2 &&
 187      git remote add cloned ./clone_dir
 188 '
 189
 190 test_expect_success 'push to cloned repo' '
 191      git push cloned $HASH6^:refs/heads/parallel &&
 192      (
 193           cd clone_dir &&
 194           git checkout parallel &&
 195           git log --pretty=oneline | grep $PARA2
 196      )
 197 '
 198
 199 test_expect_success 'push branch with replacement' '
 200      git cat-file commit $PARA3 | grep "author A U Thor" &&
 201      S=$(git cat-file commit $PARA3 | sed -e "s/A U/O/" | git hash-object -t commit --stdin -w) &&
 202      git cat-file commit $S | grep "author O Thor" &&
 203      git replace $PARA3 $S &&
 204      git show $HASH6~2 | grep "O Thor" &&
 205      git show $PARA3 | grep "O Thor" &&
 206      git push cloned $HASH6^:refs/heads/parallel2 &&
 207      (
 208           cd clone_dir &&
 209           git checkout parallel2 &&
 210           git log --pretty=oneline | grep $PARA3 &&
 211           git show $PARA3 | grep "A U Thor"
 212      )
 213 '
 214
 215 test_expect_success 'fetch branch with replacement' '
 216      git branch tofetch $HASH6 &&
 217      (
 218           cd clone_dir &&
 219           git fetch origin refs/heads/tofetch:refs/heads/parallel3 &&
 220           git log --pretty=oneline parallel3 > output.txt &&
 221           ! grep $PARA3 output.txt &&
 222           git show $PARA3 > para3.txt &&
 223           grep "A U Thor" para3.txt &&
 224           git fetch origin "refs/replace/*:refs/replace/*" &&
 225           git log --pretty=oneline parallel3 > output.txt &&
 226           grep $PARA3 output.txt &&
 227           git show $PARA3 > para3.txt &&
 228           grep "O Thor" para3.txt
 229      )
 230 '
 231
 232 test_expect_success 'bisect and replacements' '
 233      git bisect start $HASH7 $HASH1 &&
 234      test "$PARA3" = "$(git rev-parse --verify HEAD)" &&
 235      git bisect reset &&
 236      GIT_NO_REPLACE_OBJECTS=1 git bisect start $HASH7 $HASH1 &&
 237      test "$HASH4" = "$(git rev-parse --verify HEAD)" &&
 238      git bisect reset &&
 239      git --no-replace-objects bisect start $HASH7 $HASH1 &&
 240      test "$HASH4" = "$(git rev-parse --verify HEAD)" &&
 241      git bisect reset
 242 '
 243
 244 test_expect_success 'index-pack and replacements' '
 245         git --no-replace-objects rev-list --objects HEAD |
 246         git --no-replace-objects pack-objects test- &&
 247         git index-pack test-*.pack
 248 '
 249
 250 test_expect_success 'not just commits' '
 251         echo replaced >file &&
 252         git add file &&
 253         REPLACED=$(git rev-parse :file) &&
 254         mv file file.replaced &&
 255
 256         echo original >file &&
 257         git add file &&
 258         ORIGINAL=$(git rev-parse :file) &&
 259         git update-ref refs/replace/$ORIGINAL $REPLACED &&
 260         mv file file.original &&
 261
 262         git checkout file &&
 263         test_cmp file.replaced file
 264 '
 265
 266 test_expect_success 'replaced and replacement objects must be of the same type' '
 267         test_must_fail git replace mytag $HASH1 &&
 268         test_must_fail git replace HEAD^{tree} HEAD~1 &&
 269         BLOB=$(git rev-parse :file) &&
 270         test_must_fail git replace HEAD^ $BLOB
 271 '
 272
 273 test_expect_success '-f option bypasses the type check' '
 274         git replace -f mytag $HASH1 &&
 275         git replace --force HEAD^{tree} HEAD~1 &&
 276         git replace -f HEAD^ $BLOB
 277 '
 278
 279 test_expect_success 'replace ref cleanup' '
 280         test -n "$(git replace)" &&
 281         git replace -d $(git replace) &&
 282         test -z "$(git replace)"
 283 '
 284
 285 test_done