t/t3402-rebase-merge.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2006 Junio C Hamano
   4 #
   5
   6 test_description='git rebase --merge test'
   7
   8 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
   9 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
  10
  11 TEST_PASSES_SANITIZE_LEAK=true
  12 . ./test-lib.sh
  13
  14 T="A quick brown fox
  15 jumps over the lazy dog."
  16 for i in 1 2 3 4 5 6 7 8 9 10
  17 do
  18         echo "$i $T"
  19 done >original
  20
  21 test_expect_success setup '
  22         git add original &&
  23         git commit -m"initial" &&
  24         git branch side &&
  25         echo "11 $T" >>original &&
  26         git commit -a -m"main updates a bit." &&
  27
  28         echo "12 $T" >>original &&
  29         git commit -a -m"main updates a bit more." &&
  30
  31         git checkout side &&
  32         (echo "0 $T" && cat original) >renamed &&
  33         git add renamed &&
  34         git update-index --force-remove original &&
  35         git commit -a -m"side renames and edits." &&
  36
  37         tr "[a-z]" "[A-Z]" <original >newfile &&
  38         git add newfile &&
  39         git commit -a -m"side edits further." &&
  40         git branch second-side &&
  41
  42         tr "[a-m]" "[A-M]" <original >newfile &&
  43         rm -f original &&
  44         git commit -a -m"side edits once again." &&
  45
  46         git branch test-rebase side &&
  47         git branch test-rebase-pick side &&
  48         git branch test-reference-pick side &&
  49         git branch test-conflicts side &&
  50         git checkout -b test-merge side
  51 '
  52
  53 test_expect_success 'reference merge' '
  54         git merge -s recursive -m "reference merge" main
  55 '
  56
  57 PRE_REBASE=$(git rev-parse test-rebase)
  58 test_expect_success rebase '
  59         git checkout test-rebase &&
  60         GIT_TRACE=1 git rebase --merge main
  61 '
  62
  63 test_expect_success 'test-rebase@{1} is pre rebase' '
  64         test $PRE_REBASE = $(git rev-parse test-rebase@{1})
  65 '
  66
  67 test_expect_success 'merge and rebase should match' '
  68         git diff-tree -r test-rebase test-merge >difference &&
  69         if test -s difference
  70         then
  71                 cat difference
  72                 false
  73         else
  74                 echo happy
  75         fi
  76 '
  77
  78 test_expect_success 'rebase the other way' '
  79         git reset --hard main &&
  80         git rebase --merge side
  81 '
  82
  83 test_expect_success 'rebase -Xtheirs' '
  84         git checkout -b conflicting main~2 &&
  85         echo "AB $T" >> original &&
  86         git commit -mconflicting original &&
  87         git rebase -Xtheirs main &&
  88         grep AB original &&
  89         ! grep 11 original
  90 '
  91
  92 test_expect_success 'rebase -Xtheirs from orphan' '
  93         git checkout --orphan orphan-conflicting main~2 &&
  94         echo "AB $T" >> original &&
  95         git commit -morphan-conflicting original &&
  96         git rebase -Xtheirs main &&
  97         grep AB original &&
  98         ! grep 11 original
  99 '
 100
 101 test_expect_success 'merge and rebase should match' '
 102         git diff-tree -r test-rebase test-merge >difference &&
 103         if test -s difference
 104         then
 105                 cat difference
 106                 false
 107         else
 108                 echo happy
 109         fi
 110 '
 111
 112 test_expect_success 'picking rebase' '
 113         git reset --hard side &&
 114         git rebase --merge --onto main side^^ &&
 115         mb=$(git merge-base main HEAD) &&
 116         if test "$mb" = "$(git rev-parse main)"
 117         then
 118                 echo happy
 119         else
 120                 git show-branch
 121                 false
 122         fi &&
 123         f=$(git diff-tree --name-only HEAD^ HEAD) &&
 124         g=$(git diff-tree --name-only HEAD^^ HEAD^) &&
 125         case "$f,$g" in
 126         newfile,newfile)
 127                 echo happy ;;
 128         *)
 129                 echo "$f"
 130                 echo "$g"
 131                 false
 132         esac
 133 '
 134
 135 test_expect_success 'rebase --skip works with two conflicts in a row' '
 136         git checkout second-side  &&
 137         tr "[A-Z]" "[a-z]" <newfile >tmp &&
 138         mv tmp newfile &&
 139         git commit -a -m"edit conflicting with side" &&
 140         tr "[d-f]" "[D-F]" <newfile >tmp &&
 141         mv tmp newfile &&
 142         git commit -a -m"another edit conflicting with side" &&
 143         test_must_fail git rebase --merge test-conflicts &&
 144         test_must_fail git rebase --skip &&
 145         git rebase --skip
 146 '
 147
 148 test_expect_success '--reapply-cherry-picks' '
 149         git init repo &&
 150
 151         # O(1-10) -- O(1-11) -- O(0-10) main
 152         #        \
 153         #         -- O(1-11) -- O(1-12) otherbranch
 154
 155         printf "Line %d\n" $(test_seq 1 10) >repo/file.txt &&
 156         git -C repo add file.txt &&
 157         git -C repo commit -m "base commit" &&
 158
 159         printf "Line %d\n" $(test_seq 1 11) >repo/file.txt &&
 160         git -C repo commit -a -m "add 11" &&
 161
 162         printf "Line %d\n" $(test_seq 0 10) >repo/file.txt &&
 163         git -C repo commit -a -m "add 0 delete 11" &&
 164
 165         git -C repo checkout -b otherbranch HEAD^^ &&
 166         printf "Line %d\n" $(test_seq 1 11) >repo/file.txt &&
 167         git -C repo commit -a -m "add 11 in another branch" &&
 168
 169         printf "Line %d\n" $(test_seq 1 12) >repo/file.txt &&
 170         git -C repo commit -a -m "add 12 in another branch" &&
 171
 172         # Regular rebase fails, because the 1-11 commit is deduplicated
 173         test_must_fail git -C repo rebase --merge main 2> err &&
 174         test_grep "error: could not apply.*add 12 in another branch" err &&
 175         git -C repo rebase --abort &&
 176
 177         # With --reapply-cherry-picks, it works
 178         git -C repo rebase --merge --reapply-cherry-picks main
 179 '
 180
 181 test_expect_success '--reapply-cherry-picks refrains from reading unneeded blobs' '
 182         git init server &&
 183
 184         # O(1-10) -- O(1-11) -- O(1-12) main
 185         #        \
 186         #         -- O(0-10) otherbranch
 187
 188         printf "Line %d\n" $(test_seq 1 10) >server/file.txt &&
 189         git -C server add file.txt &&
 190         git -C server commit -m "merge base" &&
 191
 192         printf "Line %d\n" $(test_seq 1 11) >server/file.txt &&
 193         git -C server commit -a -m "add 11" &&
 194
 195         printf "Line %d\n" $(test_seq 1 12) >server/file.txt &&
 196         git -C server commit -a -m "add 12" &&
 197
 198         git -C server checkout -b otherbranch HEAD^^ &&
 199         printf "Line %d\n" $(test_seq 0 10) >server/file.txt &&
 200         git -C server commit -a -m "add 0" &&
 201
 202         test_config -C server uploadpack.allowfilter 1 &&
 203         test_config -C server uploadpack.allowanysha1inwant 1 &&
 204
 205         git clone --filter=blob:none "file://$(pwd)/server" client &&
 206         git -C client checkout origin/main &&
 207         git -C client checkout origin/otherbranch &&
 208
 209         # Sanity check to ensure that the blobs from the merge base and "add
 210         # 11" are missing
 211         git -C client rev-list --objects --all --missing=print >missing_list &&
 212         MERGE_BASE_BLOB=$(git -C server rev-parse main^^:file.txt) &&
 213         ADD_11_BLOB=$(git -C server rev-parse main^:file.txt) &&
 214         grep "[?]$MERGE_BASE_BLOB" missing_list &&
 215         grep "[?]$ADD_11_BLOB" missing_list &&
 216
 217         git -C client rebase --merge --reapply-cherry-picks origin/main &&
 218
 219         # The blob from the merge base had to be fetched, but not "add 11"
 220         git -C client rev-list --objects --all --missing=print >missing_list &&
 221         ! grep "[?]$MERGE_BASE_BLOB" missing_list &&
 222         grep "[?]$ADD_11_BLOB" missing_list
 223 '
 224
 225 test_done