Andrew's git / gitweb.git / t/t6050-replace.sh
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t / t6050-replace.shon commit add tests for rebasing of empty commits (00b8be5)
   1#!/bin/sh
   2#
   3# Copyright (c) 2008 Christian Couder
   4#
   5test_description='Tests replace refs functionality'
   6
   7exec </dev/null
   8
   9. ./test-lib.sh
  10
  11add_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: $_msg"
  19}
  20
  21HASH1=
  22HASH2=
  23HASH3=
  24HASH4=
  25HASH5=
  26HASH6=
  27HASH7=
  28
  29test_expect_success 'set up buggy branch' '
  30     echo "line 1" >> hello &&
  31     echo "line 2" >> hello &&
  32     echo "line 3" >> hello &&
  33     echo "line 4" >> hello &&
  34     add_and_commit_file hello "4 lines" &&
  35     HASH1=$(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
  64test_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
  73test_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
  80test_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
  85cat >tag.sig <<EOF
  86object $HASH2
  87type commit
  88tag mytag
  89tagger T A Gger <> 0 +0000
  90
  91EOF
  92
  93test_expect_success 'tag replaced commit' '
  94     git mktag <tag.sig >.git/refs/tags/mytag 2>message
  95'
  96
  97test_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
 104test_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 $R
 118     )
 119'
 120
 121test_expect_success '"git replace" listing and deleting' '
 122     test "$HASH2" = "$(git replace -l)" &&
 123     test "$HASH2" = "$(git replace)" &&
 124     aa=${HASH2%??????????????????????????????????????} &&
 125     test "$HASH2" = "$(git replace -l "$aa*")" &&
 126     test_must_fail git replace -d $R &&
 127     test_must_fail git replace -d &&
 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
 134test_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" = "$(git replace)"
 141'
 142
 143test_expect_success '"git replace" resolves sha1' '
 144     SHORTHASH2=$(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 $R &&
 150     test_must_fail git replace -f &&
 151     test "$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#
 168test_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
 190test_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
 199test_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
 215test_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
 232test_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" = "$(git rev-parse --verify HEAD)" &&
 241     git bisect reset
 242'
 243
 244test_expect_success 'index-pack and replacements' '
 245        git --no-replace-objects rev-list --objects HEAD |
 246        git --no-replace-objects pack-objects test- &&
 247        git index-pack test-*.pack
 248'
 249
 250test_expect_success 'not just commits' '
 251        echo replaced >file &&
 252        git add file &&
 253        REPLACED=$(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
 266test_done